Double-station stamping feeding device

Abstract

The invention discloses a double-station stamping feeding device, and particularly relates to the technical field of stamping feeding, the double-station stamping feeding device comprises a jacking mechanism mounted in an inner cavity of a workbench, a supporting frame and a conveying plate are mounted at the top of the workbench, a fine positioning tool is mounted on one side of the supporting frame, a displacement frame is slidably mounted at the top of the supporting frame, and a two-axis mechanical arm is mounted on the displacement frame; a clamping assembly is installed at the output end of the two-axis mechanical arm, two material discs are connected to the top of the conveying plate through two positioning assemblies in a bolted mode, first holes are formed in the material discs, a plurality of guide rods are fixedly installed at the tops of the material discs, a first lifting plate is installed on the guide rods in a penetrating and sliding mode at the same time, and a plurality of pairs of first limiting rods are fixedly installed at the top of the first lifting plate. By arranging the multiple pairs of first limiting rods, an operator can place a plurality of riveting supports on one material disc station in advance, then switching is carried out on the feeding position through the material discs of the two stations, and therefore the equipment does not need to be frequently stopped to carry out loading and arraying operation, and the overall production efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of stamping and feeding, in particular to a double-station stamping and feeding device. Background Art

[0002] In the prior art, most of the riveted products made by hardware are brackets that need to be threaded with two bolts. Before riveting and stamping, it is often necessary to accurately position the riveted bracket on the riveting press tooling. In order to reduce the complexity of accurately positioning a large number of brackets, it is often necessary to use a loading device to automatically load the brackets. The riveted brackets have complex characteristics. If a special machine arrangement mechanism is made for a certain type of bracket, the initial manufacturing cost is too high. Therefore, manual pre-placement and sorting are adopted, and double-station switching is used to reduce the tediousness of changeover and free people from special machine work.

[0003] In traditional technology, the loading quantity of a single station in a double-station loading device is limited, and the equipment needs to be stopped more frequently during the production process to load and arrange the materials. On the automated assembly line, when the materials on the station are used up, the processing equipment will have to stop running due to lack of raw materials, which will break the continuity of production and reduce the overall production efficiency.

[0004] In order to improve the flexibility of transporting riveted brackets, multi-axis manipulators are often used to grab riveted brackets. However, the use of multi-axis manipulators requires the control system to frequently adjust its various axes and constantly recalculate the motion parameters of each axis, such as speed, acceleration, displacement, etc. This increases the calculation burden of the control system. This has an adverse effect on the transportation of riveted brackets. For example, in some operations based on trajectory planning, frequent axis adjustments will make it difficult for the control system to accurately plan a smooth motion trajectory, which will cause jitter or discontinuity when the manipulator moves. Summary of the invention

[0005] The purpose of the present invention is to provide a double-station stamping feeding device.

[0006] The technical problems solved by the present invention are: 1. Frequent stopping of the equipment to load materials at the workstation will interrupt the continuity of the automated production line and reduce the overall production efficiency;

[0007] 2. The method of accurately grasping the riveted bracket by controlling multiple axes of the robot increases the control difficulty of the control system, which will have an adverse effect on feeding.

[0008] The present invention can be achieved through the following technical scheme: it includes a jacking mechanism installed in the inner cavity of the workbench, a support frame is fixedly installed on the top of the workbench, a precision positioning tool is installed on one side of the support frame, a displacement frame is slidably installed on the top of the support frame, a two-axis mechanical arm is installed on the displacement frame, a clamping assembly is installed on the output end of the two-axis mechanical arm, a transport plate is slidably installed on the top of the workbench, two groups of positioning assemblies are installed on the top of the transport plate, a material tray is connected to the top of the transport plate through the positioning assembly bolts, a hole is opened at the center position of the material tray, a plurality of guide rods are fixedly installed on the top of the material tray, a lifting plate is slidably installed on the plurality of guide rods at the same time, and a plurality of pairs of limit rods that are compatible with the two connecting holes on the riveted bracket are fixedly installed on the top of the lifting plate.

[0009] A further technical improvement of the present invention is that: a second screw rod is threadedly connected through the displacement frame, and two ends of the second screw rod are rotatably connected to two sides of the support frame respectively.

[0010] Furthermore, the clamping assembly includes a sliding bracket fixedly connected to the output end of the two-axis robotic arm, a slide plate is slidably installed on the side of the sliding bracket away from the two-axis robotic arm, two symmetrical clamping plates are slidably installed on the slide plate, two symmetrical push-pull plates are rotatably installed on one side of the slide, and the ends of the two push-pull plates away from the slide are rotatably connected to the tops of the two clamping plates respectively.

[0011] Furthermore, anti-skid pads are fixedly installed on opposite sides of the two clamping plates, and the anti-skid pads are made of rubber material.

[0012] Furthermore, each group of positioning components includes at least four positioning bolts arranged in a rectangular shape, the bottom ends of the positioning bolts are fixedly connected to the top of the transport plate, and multiple positioning bolts are simultaneously connected to the material tray bolts.

[0013] Furthermore, the lifting mechanism includes a support plate fixedly installed on the top of the inner cavity of the workbench, and a plurality of sliding rods are slidably installed on the support plate. A lifting plate 2 matching with hole 1 is fixedly installed on the top of the plurality of sliding rods at the same time. A hole 2 matching with the lifting plate 2 is provided at the position of the top plate of the workbench corresponding to the lifting plate 2. A screw rod 1 is rotatably installed between the support plate and the bottom plate of the workbench. The outer peripheral wall of the screw rod 1 is threadedly connected with the lifting plate, and the bottom ends of the plurality of sliding rods are fixedly connected to the top of the lifting plate at the same time.

[0014] Furthermore, the size of the outer peripheral wall of the lifting plate 2 is smaller than the size of the inner peripheral wall of the hole 1.

[0015] Furthermore, the precision positioning tooling includes a placement rack fixedly installed on one side of the support frame, a placement plate installed on the top of the placement rack, the placement plate and the placement rack are connected by bolts, and multiple pairs of limit rods 2 are fixedly installed on the top of the placement plate and matched with two connecting holes on the riveted bracket, and push plates are floatingly installed on both sides of the top of the placement plate.

[0016] Furthermore, handles are hinged on both sides of the placement tray.

[0017] Furthermore, the outer circumferential wall size of the second limiting rod is smaller than the inner circumferential wall size of the connecting hole on the riveted bracket.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The present application switches the material tray aligned with the jacking mechanism through the transport plate, and when the jacking mechanism pushes the lifting plate 1, a plurality of riveted brackets restricted by a plurality of pairs of limit rods on the top of the lifting plate 1 move vertically upward to a position on the same horizontal plane as the clamping assembly, waiting for the clamping assembly to clamp and feed the material. At this time, the operator installs the next batch of riveted brackets on the plurality of pairs of limit rods on another material tray, thereby eliminating the need to frequently stop the equipment for loading and arranging operations, thereby improving the overall production efficiency.

[0020] 2. The present application enables the material tray to be bolted to the transport plate through positioning bolts, so that the material tray can be easily removed from the transport plate, thereby facilitating replacement of the material tray to adapt to different types of riveted brackets, thereby improving applicability.

[0021] 3. The present application uses a lifting mechanism to limit the vertical loading path of the riveted bracket to the conveying path of the lifting mechanism, and then uses screw 2 and a displacement frame to limit the horizontal loading path of the riveted bracket to the extension direction of screw 2, and then uses a two-axis robotic arm to perform fine adjustments in the vertical and horizontal directions, so that the riveted bracket can be accurately positioned on the precision positioning tooling, so that it can be transported to the stamping equipment in the next process, reducing the control difficulty of the control system. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 It is a front cross-sectional schematic diagram of the overall structure of the present invention;

[0025] Figure 3 This is a schematic diagram of the structural connection between the material tray and the transport plate of the present invention;

[0026] Figure 4 It is a schematic diagram of the structural connection of the jacking mechanism of the present invention;

[0027] Figure 5 It is a schematic diagram of the connection structure between the precision positioning tooling and the clamping assembly and the support frame of the present invention.

[0028] In the figure: 1. Workbench;

[0029] 2. Lifting mechanism; 21. Support plate; 22. Sliding rod; 23. Lifting plate 2; 24. Hole 2; 25. Screw 1; 26. Lifting plate;

[0030] 3. Precision positioning tooling; 31. Placement rack; 32. Placement tray; 33. Handle; 34. Limit rod 2; 35. Push plate;

[0031] 4. Transport plate; 5. Positioning bolt; 6. Material tray; 7. Hole 1; 8. Guide rod; 9. Lifting plate 1; 10. Limit rod 1; 11. Support frame; 12. Displacement frame; 13. Two-axis mechanical arm; 14. Screw 2;

[0032] 15. Clamping assembly; 151. Sliding bracket; 152. Slide plate; 153. Clamping plate; 154. Anti-slip pad; 155. Push-pull plate. DETAILED DESCRIPTION

[0033] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation methods, structures, features and effects of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0034] See also Figure 1-3 As shown, this embodiment provides a double-station stamping feeding device. It includes a workbench 1, a jacking mechanism 2 is installed in the workbench 1, a precision positioning grabbing mechanism and a precision positioning tool 3 are installed on the workbench 1, a transport plate 4 is also slidably installed on the workbench 1, an electric push rod for driving the transport plate 4 to move left and right in the horizontal direction is installed on the workbench 1, and two groups of positioning components are installed on the top of the transport plate 4, each group of positioning components includes at least four rectangularly arranged positioning bolts 5, the bottom ends of the positioning bolts 5 are fixedly connected to the top of the transport plate 4, and multiple positioning bolts 5 of each group of positioning components are simultaneously bolted to a material tray 6, a hole 7 is opened at the center of the material tray 6, and multiple guide rods 8 are fixedly installed on the top of the material tray 6, and a lifting plate 9 is slidably installed on the multiple guide rods 8 at the same time, and multiple pairs of limit rods 10 adapted to the two connecting holes on the riveted bracket are fixedly installed on the top of the lifting plate 9;

[0035] By respectively passing through a plurality of riveted brackets on a plurality of pairs of limiting rods 10, the plurality of riveted brackets are restricted in a row on the lifting plate 9, and then the lifting plate 9 is restricted by a plurality of guide rods 8, so that the lifting plate 9 can only drive the plurality of riveted brackets with the top thereof limited to move in the vertical direction, and by positioning the material tray 6 on the positioning assembly, the material tray 6 is limited to prevent the material tray 6 from deviating on the transport plate 4 or directly falling off the transport plate 4 when the transport plate 4 moves, thereby ensuring the accuracy of the subsequent precise positioning grasping mechanism grasping the riveted brackets;

[0036] See also Figure 2 and Figure 4As shown, the lifting mechanism 2 includes a support plate 21 fixedly installed on the top of the inner cavity of the workbench 1, and a plurality of slide bars 22 are slidably installed on the support plate 21. A lifting plate 23 adapted to the hole 7 is fixedly installed on the top of the plurality of slide bars 22 at the same time. The size of the outer peripheral wall of the lifting plate 23 is smaller than the size of the inner peripheral wall of the hole 7. A hole 24 adapted to the lifting plate 23 is provided at the position of the top plate of the workbench 1 corresponding to the lifting plate 23. A screw 25 is rotatably installed between the support plate 21 and the bottom plate of the workbench 1. A driving motor for driving the screw 25 to rotate is installed in the workbench 1. A lifting plate 26 is threadedly connected to the outer peripheral wall of the screw 25. The bottom ends of the plurality of slide bars 22 are fixedly connected to the top of the lifting plate 26 at the same time.

[0037] When the screw rod 1 25 rotates in the clockwise direction, it will drive the plurality of slide bars 22 to slide vertically upward along the support plate 21 through the lifting plate 26, so that the plurality of slide bars 22 will synchronously drive the lifting plate 2 23 to move vertically upward, and vice versa, the lifting plate 2 23 will move vertically downward;

[0038] See also Figure 1-2 and Figure 5 As shown, the precision positioning grasping mechanism includes a support frame 11 fixedly installed on the workbench 1, a displacement frame 12 is slidably installed on the top of the support frame 11, a two-axis mechanical arm 13 is installed on the displacement frame 12, and each axis of the two-axis mechanical arm 13 can be telescopic in the Z axis and the X axis from left to right, a screw rod 14 is threadedly connected through the displacement frame 12, and the two ends of the screw rod 14 are respectively rotatably connected to the two sides of the support frame 11, a driving motor for driving the screw rod 14 to rotate is installed on the support frame 11, and a clamping assembly 15 is installed on the output end of the two-axis mechanical arm 13. When the screw rod 14 rotates clockwise, it will drive the displacement frame 12 to move along the top of the support frame 11 toward the direction of the precision positioning tooling 3, and vice versa, it will drive the displacement frame 12 to move in the opposite direction of the precision positioning tooling 3;

[0039] The clamping assembly 15 includes a sliding bracket 151 fixedly connected to the output end of the two-axis robot arm 13, a slide plate 152 is slidably installed on the side of the sliding bracket 151 away from the two-axis robot arm 13, a cylinder driving the slide plate 152 to move up and down in the Z-axis direction is installed on the sliding bracket 151, two mutually symmetrical clamping plates 153 are slidably installed on the slide plate 152, and anti-skid pads 154 are fixedly installed on opposite sides of the two clamping plates 153, and the anti-skid pads 154 are made of rubber material, and two mutually symmetrical push-pull plates 155 are rotatably installed on one side of the slider, and the ends of the two push-pull plates 155 away from the slider are respectively rotatably connected to the tops of the two clamping plates 153;

[0040] When the slider moves downward in the Z-axis direction, the two clamping plates 153 are pushed by the two push-pull plates 155 respectively, so that the two clamping plates 153 move away from each other, and vice versa, the two clamping plates 153 are pushed closer to each other. The provision of the anti-slip pad 154 is conducive to the clamping plate 153 clamping the riveted bracket, increasing the friction between the clamping plate 153 and the riveted bracket, preventing the riveted bracket from slipping off the clamping plate 153, and preventing the clamping plate 153 from rigidly contacting the riveted bracket, so as to avoid damage to the riveted bracket;

[0041] See also Figure 1 and Figure 5 The cam 32 is provided with a plurality of handles 33 which are hinged on both sides of the cam 32 so that the operator can easily move the cam 32. The cam 32 is provided with a plurality of pairs of stop rods 34 which are matched with the two connecting holes on the rivet bracket. The outer peripheral wall size of the stop rods 34 is smaller than the inner peripheral wall size of the connecting hole on the rivet bracket so that the cam 32 is convenient for the precise positioning grasping mechanism to place the rivet bracket on the corresponding stop rods 34. Push plates 35 are floatingly installed on both sides of the top of the cam 32. The push plates 35 are used to correct the rivet bracket installed on the stop rods 34 to prevent the rivet bracket from tilting on the cam 32 due to the gap between the stop rods 34 and the connecting hole on the rivet bracket, thereby affecting the precise positioning of the rivet bracket.

[0042] When the present invention is used, firstly, two material trays 6 adapted to the two batches of riveted brackets with loading are respectively installed on the two sets of positioning components, and then the batches of riveted brackets adapted thereto are respectively installed on the multiple pairs of limit rods 10 of the two material trays 6. After the two batches of riveted brackets are installed, one of the material trays 6 is moved to the position corresponding to the lifting mechanism 2 through the transport plate 4, so that the hole 17 on the material tray 6 is aligned with the hole 24 on the workbench 1, and then the lifting plate 23 in the lifting mechanism 2 is moved upward, so that it passes through the hole 24 and the hole 17 in turn and then abuts against the hole 24 and the hole 17. The bottom of the material tray 6, and then when the lifting plate 23 continues to move upward, it will drive the lifting plate 19 to move vertically upward along the guide rod 8, so that the riveted brackets in the highest row on its top are moved to the same horizontal plane as the clamping assembly 15, and then the displacement frame 12 is driven by the screw 214 to move the output shaft of the two-axis mechanical arm 13 to a position that coincides with the central axis of the row of riveted brackets, and then the distance between the two clamping plates 153 in the clamping assembly 15 is adjusted to be larger than the size of the clamping axis of the riveted bracket, and then the clamping assembly 15 is moved to the position that coincides with the riveted bracket to be clamped through the two-axis mechanical wall. After the brackets are in the same position, the distance between the two clamping plates 153 is reduced so that the riveted bracket is clamped firmly. Finally, the riveted bracket clamped by the clamping assembly 15 is transported to the corresponding limit rod 2 34 on the precision positioning tool 3 through the displacement frame 12 and the two-axis mechanical wall. After repeating the above operation to transfer all the riveted brackets in the highest row on the material tray 6 to the precision positioning tool 3, the robot arm of the next process in the production workshop will receive the set wireless signal to transfer the riveted bracket at this place to the subsequent riveting stamping equipment for riveting stamping, and then the jacking mechanism 2 will be used to transfer the riveted brackets to the subsequent riveting stamping equipment for riveting stamping. The riveted brackets in the highest row on the top of the tray 6 are lifted to the same level as the clamping assembly 15, and the above operation is repeated until the riveted brackets on this tray 6 are processed, and then another tray 6 is transported to a position aligned with the lifting mechanism 2 through the transport plate 4. At this time, the previous tray 6 is detached from the bottom of the clamping assembly 15. At this time, the operator can remove the tray 6 with the emptied riveted brackets, and then fill them with riveted brackets and install them on the transport plate 4. At this time, the loading method of the riveted brackets on the top of the tray 6 at the bottom of the clamping assembly 15 is the same as the above operation.

[0043] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A double-station punching and feeding device, comprising a lifting mechanism (2) installed in the inner cavity of a workbench (1), characterized in that: A support frame (11) is fixedly mounted on the top of the workbench (1), a precision positioning tool (3) is mounted on one side of the support frame (11), a displacement frame (12) is slidably mounted on the top of the support frame (11), a two-axis mechanical arm (13) is mounted on the displacement frame (12), a clamping assembly (15) is mounted on the output end of the two-axis mechanical arm (13), a transport plate (4) is slidably mounted on the top of the workbench (1), two groups of positioning assemblies are mounted on the top of the transport plate (4), a material tray (6) is connected to the top of the transport plate (4) through positioning assembly bolts, a hole (7) is opened at the center of the material tray (6), a plurality of guide rods (8) are fixedly mounted on the top of the material tray (6), a lifting plate (9) is slidably mounted on the plurality of guide rods (8), and a plurality of pairs of limit rods (10) matched with two connecting holes on the riveted bracket are fixedly mounted on the top of the lifting plate (9).

2. A double-station stamping and feeding device according to claim 1, characterized in that: The displacement frame (12) is threadedly connected with a second screw rod (14), and the two ends of the second screw rod (14) are rotatably connected to the two sides of the support frame (11) respectively.

3. A double-station stamping and feeding device according to claim 1, characterized in that: The clamping assembly (15) comprises a sliding bracket (151) fixedly connected to the output end of the two-axis mechanical arm (13); a sliding plate (152) is slidably mounted on the side of the sliding bracket (151) away from the two-axis mechanical arm (13); two mutually symmetrical clamping plates (153) are slidably mounted on the sliding plate (152); two mutually symmetrical push-pull plates (155) are rotatably mounted on one side of the sliding plate; and the ends of the two push-pull plates (155) away from the sliding plate are rotatably connected to the tops of the two clamping plates (153) respectively.

4. A double-station stamping and feeding device according to claim 3, characterized in that: An anti-skid pad (154) is fixedly mounted on one opposite side of the two clamping plates (153), and the anti-skid pad (154) is made of rubber material.

5. A double-station stamping and feeding device according to claim 1, characterized in that: Each group of positioning components comprises at least four positioning bolts (5) arranged in a rectangular shape, the bottom ends of the positioning bolts (5) are fixedly connected to the top of the transport plate (4), and a plurality of positioning bolts (5) are simultaneously bolted to the material tray (6).

6. A double-station stamping and feeding device according to claim 1, characterized in that: The lifting mechanism (2) comprises a support plate (21) fixedly mounted on the top of the inner cavity of the workbench (1), a plurality of slide bars (22) being slidably mounted on the support plate (21), a lifting plate (23) matching with the hole (7) being fixedly mounted on the top of the plurality of slide bars (22), a hole (24) matching with the lifting plate (23) being provided at a position of the top plate of the workbench (1) corresponding to the position of the lifting plate (23), a screw rod (25) being rotatably mounted between the support plate (21) and the bottom plate of the workbench (1), a lifting plate (26) being threadedly connected to the outer peripheral wall of the screw rod (25), and the bottom ends of the plurality of slide bars (22) being fixedly connected to the top of the lifting plate (26) at the same time.

7. A double-station stamping and feeding device according to claim 6, characterized in that: The outer peripheral wall size of the second lifting plate (23) is smaller than the inner peripheral wall size of the first hole (7).

8. A double-station stamping and feeding device according to claim 1, characterized in that: The precision positioning tool (3) comprises a placement frame (31) fixedly mounted on one side of the support frame (11); a placement plate (32) is mounted on the top of the placement frame (31); the placement plate (32) and the placement frame (31) are connected via bolts; a plurality of pairs of limiting rods (34) matched with two connection holes on the riveted bracket are fixedly mounted on the top of the placement plate (32); push plates (35) are floatingly mounted on both sides of the top of the placement plate (32).

9. A double-station stamping and feeding device according to claim 8, characterized in that: Handles (33) are hingedly connected on both sides of the placement plate (32).

10. A double-station stamping and feeding device according to claim 8, characterized in that: The outer circumferential wall size of the second limiting rod (34) is smaller than the inner circumferential wall size of the connecting hole on the riveted bracket.

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