A vacuum reflow furnace feeding device

Abstract

This invention relates to a vacuum reflow oven feeding device applied in the field of reflow oven technology. It includes a tray conveying mechanism, a product conveying mechanism, a stacking and feeding mechanism, a tray stacking box, a feeding tray, a product stacking box, workpieces to be produced, and a product stacking robot, all fixedly installed on the top of the machine body. The tray conveying mechanism and the product conveying mechanism push the tray stacking box and the product stacking box, where the feeding tray and workpieces to be produced are stacked in an orderly manner, achieving batch feeding and conveying of the feeding tray and workpieces to be produced, effectively reducing the workload of feeding. The product stacking robot then grabs the workpieces to be produced and places them orderly into the feeding tray. Finally, the feeding tray is pushed into the vacuum reflow oven. The feeding process is fully automatic, effectively avoiding safety accidents caused by manual feeding and significantly improving feeding efficiency.

Description

Technical Field

[0001] The present invention relates to a feeding device, and more particularly to a vacuum reflux furnace feeding device applied in the field of reflux furnace technology. Background Technology

[0002] A vacuum reflow oven performs high-quality soldering on products in a vacuum environment. During the heating or cooling process, a reducing system is introduced to protect the product and solder from oxidation. Simultaneously, it reacts with oxides on the product and solder surfaces, improving the surface quality of the solder and reducing voids. Reflow ovens are essential equipment in the SMT (Surface Mount Technology) process of the electronics industry. The reflow oven process remelts the pre-applied paste solder onto the printed circuit board pads, achieving mechanical and electrical connections between the surface mount component leads / pins and the pads.

[0003] The reflow oven is the last critical step in surface mount technology. The reflow oven uses manual feeding of parts onto a reflow tray. The parts are placed into the reflow tray and then the tray is placed into the high-temperature reflow zone. The feeding operation is repetitive, the workload is large, and it is easy to cause safety accidents during feeding. Summary of the Invention

[0004] The technical problem that this invention aims to solve in view of the above-mentioned prior art is that manual feeding is labor-intensive and prone to safety accidents.

[0005] To solve the above problems, the present invention provides a vacuum reflux furnace feeding device, including a tray conveying mechanism, a product conveying mechanism and a stacking feeding mechanism fixedly installed on the top of the machine body, wherein the output ends of the tray conveying mechanism and the product conveying mechanism are both connected to the stacking feeding mechanism.

[0006] The pallet conveying mechanism includes a pallet box input track and a pallet box output track that are stacked and fixedly installed on the top of the machine body. The pallet box input track and the pallet box output track are slidably connected to a pallet stacking box, and a feeding tray is placed inside the pallet stacking box. The conveying ends of the pallet box input track and the pallet box output track are fixedly connected to a pallet box lifting gripper, and the pallet box lifting gripper corresponds to the pallet stacking box.

[0007] The product conveying mechanism includes a product box input track and a product box output track that are stacked and fixedly installed on the top of the machine body. Both the product box input track and the product box output track are slidably connected to a product stacking box, and the product stacking box contains the workpiece to be produced. The conveying ends of the product box input track and the product box output track are fixedly connected to a product box lifting gripper, which corresponds to the product stacking box.

[0008] The stacking and feeding mechanism includes a gripping cross slide rail fixedly installed on the top of the machine body, and a product stacking robot is fixedly connected to the moving end of the gripping cross slide rail. The product stacking robot corresponds to the workpiece to be produced. The bottom ends of the gripping cross slide rail are respectively fixedly connected to a pallet feeding track and a product feeding track. The input end of the pallet feeding track corresponds to the pallet box lifting gripper, and the input end of the product feeding track corresponds to the product box lifting gripper.

[0009] In the above-mentioned vacuum reflow oven feeding device, the pallet conveying mechanism and the product conveying mechanism push the pallet stacking box and the product stacking box to realize the batch feeding of the feeding tray and the workpiece to be produced. Then, the product stacking robot grabs the workpiece to be produced and places it in the feeding tray in an orderly manner. Finally, the feeding tray is pushed into the vacuum reflow oven. The feeding process is fully automatic, effectively avoiding the safety accidents of manual feeding and effectively improving the feeding efficiency.

[0010] As a further improvement of this application, both ends of the inner wall of the pallet stacking box and the product stacking box are provided with stacking slots. The feeding tray and the workpiece to be produced are slidably connected to the stacking slots. By orderly stacking the feeding tray and the workpiece to be produced in the stacking slots, the batch feeding operation of the pallet stacking box and the product stacking box can be realized, which effectively simplifies the feeding workload.

[0011] As a further improvement of this application, a pallet pushing cylinder is fixedly connected to the end of the pallet box lifting gripper away from the pallet loading track, and the output end of the pallet pushing cylinder is horizontally aligned with the stacking slot. The pallet pushing cylinder pushes the loading tray out of the stacking slot, making it easier for the loading tray to enter the pallet loading track.

[0012] As a further improvement of this application, a product pushing cylinder is fixedly connected to the end of the product box lifting gripper away from the product loading track, and the output end of the product pushing cylinder is horizontally aligned with the stacking slot. The product pushing cylinder pushes the workpiece to be produced out of the stacking slot, making it easier for the workpiece to be produced to enter the product loading track.

[0013] As another improvement of this application, both ends of the pallet feeding track are movably connected to a feeding conveyor belt. The outer surface of the feeding conveyor belt is provided with multiple storage holes at equal intervals. Engaging pins are movably connected inside the storage holes. Both ends of the feeding tray are provided with multiple engagement holes arranged at equal intervals. The engagement holes correspond to the engagement pins. When the feeding conveyor belt transports the feeding tray, the engagement pins are inserted into the engagement holes, which effectively improves the conveying stability of the feeding tray.

[0014] As a further improvement to this application, anti-detachment covers are fixedly connected to the top of both ends of the pallet feeding track. The anti-detachment covers are vertically aligned with the feeding conveyor belt, and the edges of the feeding tray are clamped and restricted at the bottom of the feeding conveyor belt and the anti-detachment covers, effectively preventing the feeding tray from shaking and detaching from the feeding conveyor belt.

[0015] As a further improvement to this application, the bottom of the anti-detachment cover is fixedly connected with an anti-detachment rib, and the top of the biting column is provided with an anti-detachment groove. The anti-detachment groove and the anti-detachment rib are slidably connected. Through the combination of the anti-detachment groove and the anti-detachment rib, the stability between the top of the biting column and the anti-detachment cover is further improved, and the conveying stability of the feeding tray is further improved.

[0016] As another improvement of this application, a raised pad rail is fixedly connected to one end of the pallet loading track adjacent to the pallet box lifting gripper, and the raised pad rail extends to the bottom of the anti-detachment cover. A pad groove is opened on the inner ring surface of the loading conveyor belt, and the raised pad rail is slidably connected to the pad groove. By sliding on the pad rail through the pad groove, the loading conveyor belt is provided with a support effect.

[0017] As a further improvement to this application, the groove is connected to the storage hole, and the bottom end of the engagement post is movably connected to the raised pad rail. The raised pad rail provides abutment support for the bottom end of the engagement post, making it easy for the engagement post to extend from the storage hole.

[0018] As a further improvement to this application, a suction pad is fixedly connected to the end of the pallet feeding track away from the pallet box lifting gripper. The bottom end of the biting column is movably connected to the suction pad. The horizontal height of the suction pad is lower than that of the raised pad. The suction pad is made of magnetic material, and the biting column is made of stainless steel. When the feeding tray is about to leave the pallet feeding track, the feeding conveyor belt moves to the suction pad and uses the suction pad to attract the biting column, so that the biting column automatically retracts into the storage hole.

[0019] In summary, this solution uses a pallet conveying mechanism and a product conveying mechanism to push pallet stacking boxes and product stacking boxes. The pallet stacking boxes and product stacking boxes contain orderly stacking of feeding trays and workpieces to be produced, realizing batch feeding of feeding trays and workpieces to be produced, effectively reducing the amount of feeding work. Then, a product stacking robot grabs the workpieces to be produced and places them orderly into the feeding tray. Finally, the feeding tray is pushed into the vacuum reflow oven. The feeding process is fully automated, effectively avoiding the safety accidents of manual feeding and effectively improving feeding efficiency. Attached Figure Description

[0020] Figure 1 This is a left-side stereoscopic structural diagram of the first embodiment of this application;

[0021] Figure 2 This is a right-side perspective view of the first embodiment of this application.

[0022] Figure 3 This is a perspective structural diagram of the pallet stacking box according to the first embodiment of this application;

[0023] Figure 4 This is a perspective structural diagram of the product stacking box according to the first embodiment of this application;

[0024] Figure 5 This is a three-dimensional structural diagram of the feeding tray and the workpiece to be produced according to the first embodiment of this application;

[0025] Figure 6 This is a three-dimensional structural diagram of the pallet loading track according to the second embodiment of this application;

[0026] Figure 7 This is a perspective view of the feeding conveyor belt according to the second embodiment of this application;

[0027] Figure 8 This is a three-dimensional structural diagram of the interlocking post according to the second embodiment of this application;

[0028] Figure 9 This is a cross-sectional view of the interlocking hole of the interlocking post according to the second embodiment of this application;

[0029] Figure 10 This is a demonstration diagram showing how the raised pad rail lifts the engagement column to rise in the second embodiment of this application.

[0030] Figure 11 This is a demonstration diagram of the attraction rail attracting the engagement column to descend according to the second embodiment of this application.

[0031] Explanation of the labels in the diagram:

[0032] 1. Machine body; 101. Pallet box input track; 102. Pallet box output track; 103. Product box input track; 104. Product box output track; 2. Pallet stacking box; 201. Feeding tray; 202. Pallet box lifting gripper; 203. Pallet pushing cylinder; 3. Product stacking box; 301. Workpiece to be produced; 302. Product box lifting gripper; 303. Product pushing cylinder; 4. Gripping cross slide rail; 401. Product stacking robot; 402. Pallet feeding track; 403. Product feeding track; 5. Stacking groove; 6. Feeding transmission belt; 601. Storage hole; 602. Engaging column; 603. Engaging hole; 7. Anti-detachment cover; 701. Anti-detachment rib; 702. Anti-detachment groove; 8. Raised pad rail; 801. Pad groove; 802. Suction pad rail. Detailed Implementation

[0033] The two embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0034] First implementation method:

[0035] Figure 1-3The diagram shows a vacuum reflux furnace feeding device, comprising a pallet conveying mechanism, a product conveying mechanism, and a stacking feeding mechanism fixedly installed on the top of the machine body 1. The output ends of the pallet conveying mechanism and the product conveying mechanism are both connected to the stacking feeding mechanism. The pallet conveying mechanism includes a pallet box input track 101 and a pallet box output track 102 stacked and fixedly installed on the top of the machine body 1. A pallet stacking box 2 is slidably connected inside both the pallet box input track 101 and the pallet box output track 102. A feeding tray 201 is placed inside the pallet stacking box 2. The conveying ends of the pallet box input track 101 and the pallet box output track 102 are fixedly connected to a pallet box lifting gripper 202, which corresponds to the pallet stacking box 2.

[0036] During the loading operation of the loading tray 201, the operator places the pallet stacking box 2 containing the loading tray 201 onto the pallet box input track 101. The pallet box lifting gripper 202 is used to grab the pallet stacking box 2 and move it downward. During the descent, the loading tray 201 inside the pallet stacking box 2 is sent to the stacking and loading mechanism. After the pallet stacking box 2 is emptied of the loading tray 201, the pallet stacking box 2 falls onto the pallet box output track 102. Subsequently, the pallet stacking box 2 is retrieved and pushed out by the pallet box output track 102.

[0037] Figure 1-2 and Figure 4 As shown, the product conveying mechanism includes a product box input track 103 and a product box output track 104 that are stacked and fixedly installed on the top of the machine body 1. Both the product box input track 103 and the product box output track 104 are slidably connected to a product stacking box 3, and the product stacking box 3 contains a workpiece 301 to be produced. The conveying ends of the product box input track 103 and the product box output track 104 are fixedly connected to a product box lifting gripper 302, which corresponds to the product stacking box 3. Stacking slots 5 are opened at both ends of the inner walls of the pallet stacking box 2 and the product stacking box 3. The loading tray 201 and the workpiece 301 to be produced are slidably connected to the stacking slots 5. By orderly stacking the loading tray 201 and the workpiece 301 to be produced in the stacking slots 5, the batch loading operation of the pallet stacking box 2 and the product stacking box 3 is realized, which effectively simplifies the loading workload.

[0038] During the loading operation of the workpiece 301 to be produced, the worker places the product stacking box 3 containing the workpiece 301 onto the product box input track 103. The product box lifting gripper 302 is used to grab the product stacking box 3 and move it downward. During the descent, the workpiece 301 to be produced in the product stacking box 3 is sent to the stacking and loading mechanism. After the product stacking box 3 is empty of the workpiece 301 to be produced, the product stacking box 3 falls onto the product box output track 104. Subsequently, the product stacking box 3 is retrieved and pushed out by the product box output track 104.

[0039] Figure 1-5 As shown, the stacking and feeding mechanism includes a gripping cross slide rail 4 fixedly installed on the top of the machine body 1, and a product stacking robot 401 is fixedly connected to the moving end of the gripping cross slide rail 4. The product stacking robot 401 corresponds to the workpiece 301 to be produced. A pallet feeding track 402 and a product feeding track 403 are fixedly connected to the bottom ends of the gripping cross slide rail 4, respectively. The input end of the pallet feeding track 402 corresponds to the pallet box lifting gripper 202, and the input end of the product feeding track 403 corresponds to the product box lifting gripper 302. The pallet box lifting gripper 202 is located away from the pallet feeding track 402. One end of the pallet pusher 203 is fixedly connected to the pallet pusher 203, and the output end of the pallet pusher 203 is horizontally aligned with the stacking groove 5. The pallet pusher 203 pushes the loading tray 201 out of the stacking groove 5, so that the loading tray 201 can enter the pallet loading track 402. The end of the product box lifting gripper 302 away from the product loading track 403 is fixedly connected to the product pusher 303, and the output end of the product pusher 303 is horizontally aligned with the stacking groove 5. The product pusher 303 pushes the workpiece 301 to be produced out of the stacking groove 5, so that the workpiece 301 to be produced can enter the product loading track 403.

[0040] When the pallet stacking box 2 and the product stacking box 3 are grasped and lowered by the pallet box lifting gripper 202 and the product box lifting gripper 302, and the stacking slots 5 inside the pallet stacking box 2 and the product stacking box 3 are aligned with the height of the pallet loading track 402 and the product loading track 403, the pallet pushing cylinder 203 and the product pushing cylinder 303 extend to apply a pushing force to the loading tray 201 and the workpiece to be produced 301, thereby pushing the loading tray 201 and the workpiece to be produced 301 onto the pallet loading track 402 and the product loading track 403. Subsequently, the product stacking robot 401 on the gripping cross slide rail 4 grasps the workpiece to be produced 301 and places it on the loading tray 201. Multiple workpieces to be produced 301 are laid flat on each loading tray 201, realizing the loading process of the workpieces to be produced 301. Finally, the loading tray 201 carrying the workpieces to be produced 301 enters the vacuum reflow oven from the output end of the pallet loading track 402.

[0041] Second implementation method:

[0042] Compared to the first embodiment, this embodiment mainly adds a feeding transmission belt 6 and a meshing column 602. The specific additions are as follows, while the rest of the structure is the same as the first embodiment.

[0043] Figure 6-9As shown, a feeding conveyor belt 6 is movably connected to both ends of the pallet feeding track 402. Multiple storage holes 601 are fixedly and equidistantly opened on the outer surface of the feeding conveyor belt 6. Engaging posts 602 are movably connected inside the storage holes 601. Multiple engaging holes 603 are equidistantly arranged at both ends of the feeding tray 201. The engaging holes 603 correspond to the engaging posts 602. When the feeding conveyor belt 6 transports the feeding tray 201, the engaging posts 602 insert into the engaging holes 603, effectively improving the conveying stability of the feeding tray 201. The tops of both ends of the pallet feeding track 402 are fixedly connected to... An anti-detachment cover 7 is attached, which is vertically aligned with the feeding conveyor belt 6. The edge of the feeding tray 201 is clamped and restricted at the bottom of the feeding conveyor belt 6 and the anti-detachment cover 7, effectively preventing the feeding tray 201 from shaking and detaching from the feeding conveyor belt 6. An anti-detachment rib 701 is fixedly connected to the bottom of the anti-detachment cover 7. An anti-detachment groove 702 is opened at the top of the biting column 602. The anti-detachment groove 702 is slidably connected to the anti-detachment rib 701. Through the combination of the anti-detachment groove 702 and the anti-detachment rib 701, the stability between the top of the biting column 602 and the anti-detachment cover 7 is further improved, and the conveying stability of the feeding tray 201 is further improved.

[0044] Compared to the first implementation, after the feeding tray 201 is pushed onto the pallet feeding track 402, the circulating feeding conveyor belt 6 contacts the edge of the feeding tray 201, and the biting post 602 is inserted into the biting hole 603 accordingly, effectively preventing the feeding tray 201 from slipping on the feeding conveyor belt 6 and effectively improving the conveying stability of the feeding tray 201. When the feeding tray 201 is transported to the working position of the product stacking robot 401, the feeding conveyor belt 6 moves to the bottom of the anti-detachment cover 7, and at the same time, the anti-detachment rib 701 at the bottom of the anti-detachment cover 7 is inserted into the anti-detachment groove 702 at the top of the biting post 602, further improving the stability of the feeding tray 201 and effectively preventing the feeding tray 201 from shaking and detaching from the feeding conveyor belt 6.

[0045] Figure 7-11As shown, a raised pad rail 8 is fixedly connected to one end of the pallet loading track 402 adjacent to the pallet box lifting gripper 202, and the raised pad rail 8 extends to the bottom of the anti-detachment cover 7. A groove 801 is opened on the inner ring surface of the loading conveyor belt 6, and the raised pad rail 8 is slidably connected to the groove 801. By sliding on the pad rail 8 through the groove 801, the loading conveyor belt 6 is supported. The groove 801 is connected to the storage hole 601. The bottom end of the biting post 602 is movably connected to the raised pad rail 8, and the raised pad rail 8 provides abutment support for the bottom end of the biting post 602, making it easy for the biting post 602 to extend from the storage hole 601. The pallet loading track 402 is fixedly connected to a suction pad rail 802 at one end away from the pallet box lifting gripper 202. The bottom end of the biting column 602 is movably connected to the suction pad rail 802. The horizontal height of the suction pad rail 802 is lower than the horizontal height of the raised pad rail 8. The suction pad rail 802 is made of magnetic material, and the biting column 602 is made of stainless steel. When the loading tray 201 is about to leave the pallet loading track 402, the loading conveyor belt 6 moves to the suction pad rail 802. The suction pad rail 802 attracts the biting column 602, so that the biting column 602 automatically retracts into the storage hole 601.

[0046] Compared to the first implementation, during the cyclic movement of the feeding conveyor belt 6, when the feeding conveyor belt 6 is at one end close to the pallet box lifting gripper 202, the raised pad rail 8 extends into the pad groove 801. The raised pad rail 8 supports and lifts the biting column 602, realizing the automatic extension of the biting column 602, which facilitates the automatic insertion of the biting column 602 into the receiving hole 601. When the feeding conveyor belt 6 pushes the feeding tray 201 into the vacuum reflow oven, the suction pad rail 802 is located in the pad groove 801 of the inner ring of the feeding conveyor belt 6. Since the horizontal height of the suction pad rail 802 is lower than that of the raised pad rail 8, and the suction pad rail 802 has a suction force on the biting column 602, the biting column 602 automatically retracts into the receiving hole 601, realizing the automatic separation of the biting column 602 from the biting hole 603, which facilitates the feeding tray 201 to detach from the feeding conveyor belt 6 and enter the vacuum reflow oven.

[0047] In light of current practical needs, the above-described embodiments adopted in this application are not limited to these. Any changes made within the scope of knowledge possessed by those skilled in the art without departing from the concept of this application still fall within the protection scope of this invention.

Claims

1. A vacuum reflux furnace feeding device, characterized in that: It includes a pallet conveying mechanism, a product conveying mechanism and a stacking and feeding mechanism that are fixedly installed on the top of the machine body (1), and the output ends of the pallet conveying mechanism and the product conveying mechanism are connected to the stacking and feeding mechanism; The pallet conveying mechanism includes a pallet box input track (101) and a pallet box output track (102) that are stacked and fixedly installed on the top of the machine body (1). The pallet box input track (101) and the pallet box output track (102) are both slidably connected to a pallet stacking box (2). The pallet stacking box (2) contains a feeding tray (201). The conveying ends of the pallet box input track (101) and the pallet box output track (102) are fixedly connected to a pallet box lifting gripper (202). The pallet box lifting gripper (202) corresponds to the pallet stacking box (2). The product conveying mechanism includes a product box input track (103) and a product box output track (104) that are stacked and fixedly installed on the top of the machine body (1). Both the product box input track (103) and the product box output track (104) are slidably connected to a product stacking box (3). The product stacking box (3) contains a workpiece (301) to be produced. The conveying ends of the product box input track (103) and the product box output track (104) are fixedly connected to a product box lifting gripper (302). The product box lifting gripper (302) corresponds to the product stacking box (3). The stacking and feeding mechanism includes a gripping cross slide rail (4) fixedly installed on the top of the machine body (1), and a product stacking robot (401) is fixedly connected to the moving end of the gripping cross slide rail (4). The product stacking robot (401) corresponds to the workpiece (301) to be produced. The bottom ends of the gripping cross slide rail (4) are respectively fixedly connected to a pallet feeding track (402) and a product feeding track (403). The input end of the pallet feeding track (402) corresponds to the pallet box lifting gripper (202), and the input end of the product feeding track (403) corresponds to the product box lifting gripper (302). The pallet feeding track (402) is movably connected to both ends of the pallet feeding track (402). The outer ring surface of the pallet feeding track (6) is provided with a plurality of storage holes (601) at equal intervals. The storage holes (601) are movably connected to the inside of the storage holes (601). The pallet feeding tray (201) is provided with a plurality of equidistantly arranged biting holes (603) at both ends. The biting holes (603) correspond to the biting holes (602). The top of both ends of the pallet loading track (402) are fixedly connected with anti-detachment covers (7). The anti-detachment covers (7) are vertically aligned with the loading conveyor belt (6). The bottom of the anti-detachment covers (7) is fixedly connected with anti-detachment ribs (701). The top of the interlocking column (602) is provided with an anti-detachment groove (702). The anti-detachment groove (702) is slidably connected with the anti-detachment ribs (701). The end of the pallet loading track (402) adjacent to the pallet box lifting gripper (202) is fixedly connected with a raised pad rail (8), and the raised pad rail (8) extends to the bottom of the anti-detachment covers (7). The inner surface of the loading conveyor belt (6) is provided with a pad groove ( 801), the raised pad rail (8) is slidably connected to the pad groove (801), the pad groove (801) is connected to the storage hole (601), the bottom end of the biting post (602) is movably connected to the raised pad rail (8), the end of the pallet loading track (402) away from the pallet box lifting gripper (202) is fixedly connected to the suction pad rail (802), the bottom end of the biting post (602) is movably connected to the suction pad rail (802), the horizontal height of the suction pad rail (802) is lower than the horizontal height of the raised pad rail (8), the suction pad rail (802) is made of magnetic material, and the biting post (602) is made of stainless steel material.

2. The vacuum reflux furnace feeding device according to claim 1, characterized in that: The inner walls of the pallet stacking box (2) and the product stacking box (3) are provided with stacking slots (5) at both ends, and the feeding tray (201) and the workpiece to be produced (301) are slidably connected to the stacking slots (5).

3. The vacuum reflux furnace feeding device according to claim 2, characterized in that: The pallet box lifting gripper (202) is fixedly connected to a pallet pusher cylinder (203) at one end away from the pallet loading track (402), and the output end of the pallet pusher cylinder (203) is horizontally aligned with the stacking slot (5).

4. The vacuum reflux furnace feeding device according to claim 2, characterized in that: The product box lifting gripper (302) is fixedly connected to a product pushing cylinder (303) at one end away from the product feeding track (403), and the output end of the product pushing cylinder (303) is horizontally aligned with the stacking slot (5).

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