Workpiece feeding device

Abstract

The utility model discloses a workpiece feeding device which is characterized in that a lifting table is arranged on a workbench in a vertically movable mode, the lifting table is provided with a plurality of trays capable of moving back and forth relative to the lifting table in the vertical direction, the trays are provided with vertically-through matching holes, a plurality of workpieces are placed on the trays, and a push-pull mechanism comprises a push-pull head, a connecting rod and a push-pull driving piece. The connecting rod is connected with the push-pull head and the push-pull driving part, the push-pull driving part is used for driving the push-pull head to move back and forth relative to the workbench, and the push-pull head can move to the position right opposite to the matching hole of the tray, so that the push-pull head penetrates through the matching hole of the tray when the lifting platform moves up and down, and the push-pull head is driven to move back and forth when the lifting platform does not move and the push-pull head is in the matching hole of the tray. The push-pull mechanism can push the tray to move back and forth. The push-pull mechanism is matched with the lifting table, the trays filled with workpieces on the lifting table are automatically pushed to the material taking position in sequence, the workpieces on the trays are conveniently taken away, the automation degree is high, and the feeding efficiency is high.

Description

Technical Field

[0001] The utility model relates to the technical field of production equipment, in particular to a workpiece feeding device. Background Art

[0002] The glass sheets used in some precision instruments have very high requirements for thickness. In the process of producing these glass sheets, they need to be measured, graded and packaged according to the thickness. Glass sheets with a thickness difference of 1 micron are classified into different grades. Due to the high requirements for the thickness detection of these glass sheets, the small size of the glass sheets, and the fact that the glass sheets are fragile, manual measurement is usually used to measure and grade the products, which has low production efficiency and high labor costs. Summary of the invention

[0003] In order to solve the above problems, the utility model proposes a workpiece feeding device, which adopts a machine automatic feeding method to prepare for the subsequent automatic measurement of the workpiece, so as to improve the production efficiency.

[0004] In order to achieve the above-mentioned purpose, the workpiece loading device provided by the utility model is characterized in that it includes a workbench, a lifting platform, a lifting drive mechanism and a push-pull mechanism. The lifting platform can be arranged on the workbench in a movable manner up and down, and the lifting drive mechanism is used to drive the lifting platform to move up and down. The lifting platform is provided with a plurality of trays that can move forward and backward relative to the lifting platform in the vertical direction. The trays have matching holes that pass through up and down, and a plurality of workpieces are placed on the trays. The push-pull mechanism is arranged on the workbench and is located on one side of the lifting platform. It includes a push-pull head, a connecting rod and a push-pull drive member. The connecting rod connects the push-pull head and the push-pull drive member, and the push-pull drive member is used to drive the push-pull head to move forward and backward relative to the workbench. The push-pull head can be moved to a position opposite to the matching hole of the tray, so that the push-pull head passes through the matching hole of the tray when the lifting platform moves up and down. When the lifting platform does not move and the push-pull head is in the matching hole of the tray, the push-pull mechanism can push the tray to move forward and backward.

[0005] The workpiece loading device provided by the utility model has a push-pull mechanism that pushes the tray filled with workpieces at the push-out position to the material taking position. After all the workpieces are taken away, the empty tray is pulled back to the push-out position, and the lifting platform moves downward to move the tray filled with workpieces on the upper layer to the push-out position. The push-pull mechanism cooperates with the lifting platform to automatically push the tray filled with workpieces on the lifting platform to the material taking position in turn, so that the workpieces on the tray can be taken away conveniently. The automation degree is high and the loading efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 It is a structural schematic diagram of a workpiece feeding device;

[0007] Figure 2 It is a structural schematic diagram of the workpiece feeding device from another perspective;

[0008] Figure 3 It is a structural schematic diagram of the workpiece feeding device from another perspective;

[0009] Figure 4 It is a structural schematic diagram of a workpiece loading device with most of the trays on the lifting platform removed;

[0010] Figure 5 It is a structural schematic diagram of the vertical plate;

[0011] Figure 6 A schematic diagram of the structure of a tray.

[0012] The utility model is further described in detail below in conjunction with the accompanying drawings. DETAILED DESCRIPTION

[0013] See also Figure 1 and Figure 2 The workpiece loading device includes a workbench 1, a lifting platform, a lifting drive mechanism and a push-pull mechanism. A lifting platform is provided on the workbench 1, and the lifting platform includes a horizontally placed bottom plate 41 and two vertically placed vertical plates 42, and the two vertical plates 42 are positively spaced apart from each other by a certain distance. A vertical guide rail 43 is provided on the outer wall surface of the vertical plate 42, and the workbench 1 is provided with a groove matched with the guide rail 43, and the lifting platform can move up and down relative to the workbench 1 along the guide rail direction. The lifting drive mechanism is used to drive the lifting platform to move up and down, and includes a motor 51, a belt transmission mechanism, a screw rod 52 and a nut matched with the screw rod. The motor 51 and the belt transmission mechanism are arranged on the workbench 1, and the nut is coaxially installed on the passive wheel of the belt transmission mechanism. The screw rod 52 is rotatably arranged on the workbench, and its upper end is connected to the bottom plate 41 of the lifting platform. The motor 51 drives the belt transmission mechanism, and the nut rotates together with the passive wheel of the belt transmission mechanism, driving the screw rod 52 matched with the nut to move up and down, thereby moving the lifting platform up and down.

[0014] See also Figure 4 and Figure 5 The inner wall surface of the vertical plate 42 is provided with a row of slots 44 along the vertical direction. The slots 44 on the two vertical plates 42 form a plurality of slot groups. Each slot group includes two slots 44 at the same height. The two slots of the slot group are respectively arranged on different vertical plates 42. A tray 4 is inserted into each slot group. Under the action of external force, the tray 4 can move back and forth along the slots 44 relative to the lifting platform. Multiple trays 4 are arranged on the lifting platform along the vertical direction, and a row of several workpieces can be placed on each tray. The position of the tray 4 in the vertical direction is adjusted by moving the lifting platform up and down. See Figure 6, the tray 4 has a matching hole 40 that passes through from top to bottom, and two V-shaped grooves 401 are respectively provided on the two side walls of the tray 4. A ball plunger 58 is provided on the vertical plate 42, and the ball plunger 58 is inserted into the slot 44 from the outer wall surface of the vertical plate 42. A ball plunger 58 is provided near each end of the slot 44, and the distance between the two ball plungers 58 is equal to the distance between the two V-shaped grooves 401 on the same side of the tray 4, and the ball plunger 58 can be inserted into the V-shaped groove 401. The tray 4 is placed in the slot, and the four ball plungers 58 are respectively inserted into the four V-shaped grooves 401, which not only positions the tray 4, but also locks the tray 4, so that the tray 4 will not move forward and backward during the up and down movement of the lifting platform. When the push-pull mechanism pushes the tray 4 to the material-retrieving position, there are still two ball plungers 58 respectively inserted into the two V-shaped grooves 401, which can accurately locate the material-retrieving position of the tray 4 and keep the tray 4 stable during the material-retrieving process.

[0015] See also Figure 3 and Figure 4 The push-pull mechanism is arranged on the workbench 1, located on one side of the lifting platform, and includes a push-pull head 54, a connecting rod 55 and a push-pull driving member 56. The connecting rod connects the push-pull head 55 and the push-pull driving member 56. The push-pull driving member 56 is used to drive the push-pull head to move forward and backward relative to the workbench 1. The push-pull driving member 56 can be a cylinder or a linear motor, etc. The shape of the push-pull head 54 is adapted to the matching hole 40 of the tray 4, and the size is smaller than the matching hole 40. The push-pull head 54 can be inserted into the matching hole 40 from the up and down directions and can pass through the matching hole 40. The push-pull head 54 can be moved to a position directly opposite to the matching hole 40 of the tray 4. At this position, the lifting platform can move up and down. When the lifting platform moves up and down, the push-pull head 54 passes through the matching hole 40 of the tray. When the lifting platform does not move, the push-pull head is in the matching hole of the tray (such as Figure 3 and Figure 4 As shown in the figure), the push-pull mechanism can push the tray to move forward and backward.

[0016] See also Figure 1 A material picking robot 18 is also provided on the workbench 1. Two suction cups 180 are provided on the material picking robot 18. The suction cups 180 are connected to the vacuum pump through an air pipe, and a negative pressure method is used to suck the workpiece on the tray at the material picking position. The material picking robot 18 transfers the workpiece on the suction cup to the next process position through movement, and then puts the workpiece down.

[0017] The following is a brief description of the working process of the workpiece loading device in conjunction with the accompanying drawings. The push-pull head 55 is at the starting position facing the matching hole 40 of the tray 4, and the lifting platform moves to the uppermost position. At this time, the push-pull head 55 is in the matching hole 40 of the bottom tray. During the movement of the lifting platform, the push-pull head 55 passes through the matching holes 40 of the trays on the lifting platform in sequence, and the tray 4 is filled with workpieces. First, the push-pull head 55 moves forward to push the lowest tray at the push-out position forward to the material taking position (such as Figure 3As shown in the figure, at this time, the two ball plungers 58 respectively located on the two vertical plates 42 are respectively inserted into the two V-shaped grooves 401, and the material taking robot 18 takes the workpieces on the tray one by one; after all the workpieces are taken away, the push-pull head 55 moves back to the starting position and pulls the tray back to the push-out position. At this time, the four ball plungers 58 are respectively inserted into the four V-shaped grooves 401; then the lifting platform moves downward the distance between the two adjacent trays, the second bottom tray moves to the push-out position, and the push-pull head 55 is in the matching hole 40 of the second bottom tray. In this way, the loading process of a tray is completed, and the above process can be repeated to automatically take away all the workpieces on the lifting platform.

[0018] The workpiece loading device provided by the utility model has a push-pull mechanism that pushes the tray filled with workpieces at the push-out position to the material taking position. After all the workpieces are taken away, the empty tray is pulled back to the push-out position, and the lifting platform moves downward to move the tray filled with workpieces on the upper layer to the push-out position. The push-pull mechanism cooperates with the lifting platform to automatically push the tray filled with workpieces on the lifting platform to the material taking position in turn, so that the workpieces on the tray can be taken away conveniently. The automation degree is high and the loading efficiency is high.

Claims

1. A workpiece feeding device, characterized in that: The invention comprises a workbench, a lifting platform, a lifting driving mechanism and a push-pull mechanism. The lifting platform can be arranged on the workbench so as to move up and down. The lifting driving mechanism is used to drive the lifting platform to move up and down. The lifting platform is provided with a plurality of trays which can move forward and backward relative to the lifting platform in the vertical direction. The trays have matching holes which pass through from top to bottom. A plurality of workpieces are placed on the trays. The push-pull mechanism is arranged on the workbench and is located on one side of the lifting platform. The push-pull mechanism comprises a push-pull head, a connecting rod and a push-pull driving member. The connecting rod connects the push-pull head and the push-pull driving member. The push-pull driving member is used to drive the push-pull head to move forward and backward relative to the workbench. The push-pull head can be moved to a position which is opposite to the matching hole of the tray so that the push-pull head passes through the matching hole of the tray when the lifting platform moves up and down. When the lifting platform does not move and the push-pull head is in the matching hole of the tray, the push-pull mechanism can push the tray to move forward and backward.

2. The workpiece feeding device according to claim 1, characterized in that: The lifting platform includes two vertical plates that are opposite to each other and separated. The inner wall surfaces of the vertical plates are provided with a row of slots along the vertical direction. The slots on the two vertical plates constitute a plurality of slot groups. Each slot group includes two slots at the same height position. The two slots of the slot group are respectively arranged on different vertical plates. One of the trays is inserted into each slot group.

3. The workpiece feeding device according to claim 2, characterized in that: A ball plunger is provided on the vertical plate, and the ball plunger is inserted into the slot from the outer wall of the vertical plate. A ball plunger is provided near each end of the slot, and two V-shaped grooves are provided on the side wall of the tray, and the ball plunger is inserted into the V-shaped grooves.

4. The workpiece feeding device according to claim 3, characterized in that: The workbench is also provided with a material taking manipulator, on which two suction cups are provided, and the suction cups are connected to an air pump through an air pipe.

5. The workpiece feeding device according to claim 4, characterized in that: The lifting drive mechanism includes a motor, a belt transmission mechanism, a screw and a nut matched with the screw. The motor and the belt transmission mechanism are arranged on a workbench, the nut is coaxially installed on the passive wheel of the belt transmission mechanism, the screw is rotatably arranged on the workbench, and its upper end is connected to the lifting platform.

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