A barrel-shaped workpiece removal fixture

Abstract

The present invention relates to a barrel-shaped workpiece removal jig comprising a jig plate, a drive source, at least two linkages, and an equal number of suction cup groups. Each linkage includes a parallelogram linkage, each comprising a first and a second linkage arranged in parallel. The first linkages are each disposed at the output end of the drive source, and each suction cup group is disposed on the second linkage. The drive source drives the first linkages to perform feed motion along their axes, thereby rotating the corresponding linkages, with the rotating working surface of each linkage parallel to the axis of the first linkage. The present invention utilizes only a single drive source, significantly reducing the machine's failure rate, maintenance difficulty, and cost.

Description

Technical Field

[0001] The present invention relates to the technical field of tooling fixtures, and in particular to a barrel-shaped workpiece removal fixture. Background Art

[0002] At present, the connecting rod type removal jig for barrel-shaped workpieces is mainly used to remove barrel-shaped workpiece products from the inner mold of the injection molding machine. The existing removal jig controls the suction cup by a cylinder to fit the inner surface of the barrel-shaped workpiece to achieve suction. Since one cylinder controls one suction cup, the existing jig has a large number of cylinders and fixings, which leads to heavy weight and high cost. At the same time, due to the large number of cylinders, the failure rate may also increase accordingly.

[0003] Therefore, it is necessary to provide a novel barrel-shaped workpiece removal fixture. Summary of the Invention

[0004] Based on this, the purpose of the present invention is to overcome the shortcomings and deficiencies in the prior art and provide a barrel-shaped workpiece removal fixture.

[0005] A barrel-shaped workpiece removal jig comprises a jig plate, a drive source, at least two groups of connecting rod mechanisms, and the same number of suction cup groups as the connecting rod mechanisms; the drive source is arranged on the jig plate; each group of connecting rod mechanisms comprises a group of parallelogram connecting rod mechanisms, and the parallelogram connecting rod mechanisms comprise a first connecting rod and a second connecting rod arranged in parallel; the first connecting rods are all arranged on the output end of the drive source; each suction cup group is arranged on the second connecting rod; the drive source drives the first connecting rod to perform a feed motion along its axis, thereby driving the corresponding connecting rod mechanism to perform a rotational motion, and the rotating working surface of each connecting rod mechanism is parallel to the axis of the first connecting rod.

[0006] The barrel-shaped workpiece removal jig described in the present invention drives the rotational movement of several connecting rod mechanisms through the feed movement of a driving source, thereby realizing the expansion or contraction movement of the suction cup group relative to the driving source, and the parallelogram connecting rod mechanism makes the suction cup group remain parallel to the first connecting rod during the expansion and contraction process, so that each suction cup group can accurately adsorb the inner surface of the barrel-shaped workpiece; the removal of the barrel-shaped workpiece is achieved by a single driving source, which effectively reduces the number of driving sources and fixing parts, reduces the weight of the jig, and thus reduces the cost of the jig; at the same time, since only one driving source is used, the failure rate of the machine is greatly reduced, and the difficulty and cost of maintenance are reduced; the barrel-shaped workpiece removal jig of the present invention is particularly suitable for removing barrel-shaped workpieces such as trash cans.

[0007] Furthermore, the parallelogram linkage mechanism also includes a third link and a fourth link; the first link and the second link are both provided with mounting grooves, and the extension direction of each mounting groove is parallel to the axial direction of the first link; the two ends of the third link and the fourth link are respectively hinged to the mounting grooves of the first link and the second link.

[0008] The beneficial effect of adopting the above further solution is that by providing mounting grooves in the third link and the fourth link, the hinged connection of the first link and the second link can be easily achieved, and the movement of each link in the parallelogram linkage mechanism can be ensured to be on the same horizontal plane.

[0009] Furthermore, it also includes a connecting piece; the connecting piece is arranged on the output end of the driving source; the first connecting rods are all arranged on the side of the connecting piece, and each first connecting rod and the connecting piece are an integrally formed structure.

[0010] The beneficial effect of adopting the above further solution is that the connecting piece and each first connecting rod are set into an integrally formed structure, which meets the design requirements, facilitates the disassembly and assembly of the fixture, simplifies the disassembly and assembly process, reduces the number of parts, and reduces the motion error of the connecting rod mechanism.

[0011] Furthermore, there are four groups of connecting rod mechanisms; the four first connecting rods are evenly distributed on the side surfaces of the connecting member around the axial direction of the connecting member.

[0012] The beneficial effect of adopting the above further solution is that, generally, the barrel-shaped workpiece is square, and the use of four sets of first link mechanisms meets the requirements of most barrel-shaped workpiece removal fixtures on the market.

[0013] Furthermore, the connecting rod mechanism also includes a fixed rod and a movable rod; the first end of the fixed rod is fixedly connected to the jig plate, the second end of the fixed rod is hinged to the first end of the movable rod, and the second end of the movable rod is hinged to the rod body of the third connecting rod or the fourth connecting rod.

[0014] The beneficial effect of adopting the above further scheme is that by setting a fixed rod and a movable rod, the movement path of the parallelogram linkage mechanism can be limited; the length of the third link and the fourth link can be adjusted according to the size of the barrel-shaped workpiece, or the position of the movable rod hinged to the third link or the fourth link can be adjusted.

[0015] Furthermore, each suction cup group includes an angle adjustment plate and at least one suction cup, the angle adjustment plate is provided with a first connecting hole and a waist groove; the second connecting rod is provided with two through holes respectively connected to the first connecting hole and the waist groove; the suction cup is arranged on the angle adjustment plate.

[0016] The beneficial effect of adopting the above further solution is that, since the inner surface of the barrel-shaped workpiece generally has a certain slope, the angle can be adjusted by the angle adjustment plate between the suction cup and the second connecting rod to ensure that the suction cup fits the inner surface of the barrel-shaped workpiece.

[0017] Furthermore, it also includes a plurality of release agent nozzles; the release agent nozzles are respectively arranged on the fixture plate through universal connectors.

[0018] Furthermore, it also includes a fixed mounting plate; the fixed mounting plate is connected to the jig plate; the release agent nozzles are respectively arranged on the fixed mounting plate through universal connectors.

[0019] The beneficial effect of adopting the above further solution is that by setting a fixed mounting plate, the connection between the fixture and the external manipulator is convenient; by installing a release agent nozzle, the release agent can be sprayed on the mold.

[0020] Furthermore, the spraying position of each release agent nozzle corresponds to the adsorption position of a suction cup group.

[0021] Furthermore, the driving source is a cylinder.

[0022] The beneficial effect of adopting the above further solution is that, by selecting a cylinder, the connecting piece can be driven to feed in a reliable and stable manner.

[0023] For better understanding and implementation, the present invention is described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the first structure of the barrel-shaped workpiece removal fixture of the present invention;

[0025] Figure 2 This is a second structural schematic diagram of the barrel-shaped workpiece removal fixture of the present invention;

[0026] Figure 3 This is a schematic diagram of the structural connection between the second connecting rod and the angle adjustment plate of the present invention;

[0027] Figure 4 It is a schematic diagram of the structural connection between the release agent nozzle and the universal connector of the present invention.

[0028] In the figure: 10, jig plate; 20, fixed mounting plate; 30, driving source; 41, parallelogram linkage; 411, first connecting rod; 412, second connecting rod; 4121, through hole; 413, third connecting rod; 414, fourth connecting rod; 415, mounting groove; 42, fixed rod; 43, movable rod; 50, connecting part; 60, suction cup group; 61, angle adjustment plate; 611, first connecting hole; 612, waist groove; 62, suction cup; 70, release agent nozzle; 80, universal connecting part. DETAILED DESCRIPTION

[0029] See also Figures 1 to 4 , a barrel-shaped workpiece removal fixture of this embodiment includes a fixture plate 10, a fixed mounting plate 20, a driving source 30, four sets of connecting rod mechanisms, a connecting member 50, four sets of suction cup groups 60 and a plurality of release agent nozzles 70;

[0030] Specifically, the fixture plate 10 is mounted on the fixed mounting plate 20, and the fixed mounting plate 20 can be mounted and connected to an external manipulator (not shown); the driving source 30 is disposed on the fixture plate 10; in this embodiment, the driving source 30 is preferably a cylinder; the connecting member 50 is disposed on the output shaft of the driving source 30;

[0031] Specifically, each linkage mechanism includes a parallelogram linkage mechanism 41, a fixed rod 42 and a movable rod 43;

[0032] The parallelogram linkage mechanism 41 includes a first link 411, a second link 412, a third link 413, and a fourth link 414 arranged in parallel; the four first links 411 are evenly distributed on the side of the connecting member 50 around the axial direction of the connecting member 50. In this embodiment, each first link 411 and the connecting member 50 are preferably combined into an integrally formed structure; the first link 411 and the second link 412 are each provided with a mounting groove 415, and the extension direction of each mounting groove 415 is parallel to the axial direction of the first link 411 and the axial direction of the output shaft of the driving source 30; the ends of the third link 413 and the fourth link 414 are respectively hinged to the mounting grooves 415 of the first link 411 and the second link 412;

[0033] The first end of the fixed rod 42 is fixedly connected to the jig plate 10, the second end of the fixed rod 42 is hinged to the first end of the movable rod 43, and the second end of the movable rod 43 is hinged to the rod body of the third connecting rod 413 or the fourth connecting rod 414. In this embodiment, the rod body of the third connecting rod 413 is preferably hinged to the second end of the movable rod 43;

[0034] Specifically, each suction cup group 60 is disposed on the second connecting rod 412; more specifically, each suction cup group 60 includes an angle adjustment plate 61 and two suction cups 62; the angle adjustment plate 61 is provided with a first connecting hole 611 and a waist groove 612; the second connecting rod 412 is provided with two through holes 4121 corresponding to the first connecting hole 611 and the waist groove 612, respectively. The angle adjustment plate 61 and the second connecting rod 412 are connected by bolts (not shown); the suction cups 62 are disposed on the angle adjustment plate 61;

[0035] Specifically, each release agent nozzle 70 is respectively arranged on the jig plate 10 through a universal connector 80, and is also arranged on the fixed mounting plate 20 through a universal connector 80; and the injection position of each release agent nozzle 70 on the jig plate 10 and the fixed mounting plate 20 corresponds to the adsorption position of a suction cup group 60.

[0036] The working process of this embodiment:

[0037] According to the inclination of the inner surface of the barrel-shaped workpiece, the angle adjustment plate 61 is adjusted so that the adsorption angle of the suction cup 62 is consistent with the inner surface angle of the barrel-shaped workpiece; according to the size and inner surface position of the barrel-shaped workpiece, the position and spray direction of the release agent nozzle 70 are adjusted through the universal joint 80;

[0038] Then, the jig is driven by an external manipulator to extend into the barrel-shaped workpiece to be removed, and the connecting member 50 is driven by the cylinder to perform a feeding motion. Then, the first connecting rod 411 of the parallelogram linkage 41 follows the connecting member 50 to perform a feeding motion, while the movement of the third connecting rod 413 is restricted by the movable rod 43, causing the second connecting rod 412 to expand outward relative to the connecting member 50 and drive the suction cup 62 to absorb the inner surface of the barrel-shaped workpiece; at the same time, each release agent nozzle 70 operates to spray the release agent between the barrel-shaped workpiece and the mold;

[0039] The robot then drives the jig and the barrel-shaped workpiece out of the mold, and places the barrel-shaped workpiece at the corresponding workstation to complete the removal work.

[0040] In addition, the user can adjust the movement path of the second link 412 by adjusting the length of the third link 413 and the fourth link 414, or adjusting the position at which the movable rod 43 is hinged to the third link 413 or the fourth link 414 according to the size of the barrel-shaped workpiece.

[0041] Compared with the existing technology, the present invention drives the rotational movement of several connecting rod mechanisms through the feed movement of a driving source, thereby realizing the expansion or contraction movement of the suction cup group relative to the driving source, and through the parallelogram connecting rod mechanism, the suction cup group remains parallel to the first connecting rod during the expansion and contraction process, so that each suction cup group can accurately adsorb the inner surfaces of the barrel-shaped workpiece; the removal of the barrel-shaped workpiece is realized through a driving source, which effectively reduces the number of driving sources and fixings, reduces the weight of the fixture, and thus reduces the cost of the fixture; at the same time, since only one driving source is used, the failure rate of the machine is greatly reduced, and the difficulty and cost of maintenance are reduced.

[0042] In addition, the present invention provides an integrally formed structure with the connecting member and each first connecting rod, which meets the design requirements, facilitates the assembly and disassembly of the fixture, simplifies the assembly and disassembly process, reduces the number of parts, and reduces the motion error of the connecting rod mechanism.

[0043] Since the inner surface of a barrel-shaped workpiece generally has a certain slope, the angle can be adjusted by the angle adjustment plate between the suction cup and the second connecting rod to ensure that the suction cup fits the inner surface of the barrel-shaped workpiece; by installing a release agent nozzle, the mold can be sprayed with release agent.

[0044] The above-described embodiments merely illustrate several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, and all such variations and improvements fall within the scope of protection of the present invention.

Claims

1. A barrel-shaped workpiece removal fixture, characterized in that: include Jig board(10); a driving source (30), the driving source (30) being disposed on the jig plate (10); At least two groups of link mechanisms; each group of link mechanisms includes a parallelogram link mechanism (41), and the parallelogram link mechanism (41) includes a first link (411) and a second link (412) arranged in parallel; the first link (411) is arranged on the output end of the driving source (30); The number of suction cup groups (60) is the same as that of the connecting rod mechanism, and each suction cup group (60) is arranged on the second connecting rod (412); The driving source (30) drives the first connecting rod (411) to perform feeding motion along its axis, thereby driving the corresponding connecting rod mechanism to perform rotational motion, and the rotating working surface of each connecting rod mechanism is parallel to the axis of the first connecting rod (411); The parallelogram linkage mechanism (41) further includes a third link (413) and a fourth link (414); the first link (411) and the second link (412) are both provided with mounting grooves (415), and the extension direction of each mounting groove (415) is parallel to the axial direction of the first link (411); and the two ends of the third link (413) and the fourth link (414) are respectively hinged to the mounting grooves (415) of the first link (411) and the second link (412).

2. The barrel-shaped workpiece removal jig according to claim 1, characterized in that: It also includes a connecting member (50); the connecting member (50) is arranged on the output end of the driving source (30); the first connecting rods (411) are all arranged on the side of the connecting member (50), and each first connecting rod (411) and the connecting member (50) are an integrally formed structure.

3. The barrel-shaped workpiece removal jig according to claim 2, characterized in that: There are four groups of connecting rod mechanisms in total; four first connecting rods (411) are evenly distributed on the side surface of the connecting member (50) around the axial direction of the connecting member (50).

4. The barrel-shaped workpiece removal jig according to claim 3, characterized in that: The connecting rod mechanism also includes a fixed rod (42) and a movable rod (43); the first end of the fixed rod (42) is fixedly connected to the fixture plate (10), the second end of the fixed rod (42) is hinged to the first end of the movable rod (43), and the second end of the movable rod (43) is hinged to the rod body of the third connecting rod (413) or the fourth connecting rod (414).

5. The barrel-shaped workpiece removal jig according to claim 4, characterized in that: Each suction cup group (60) comprises an angle adjustment plate (61) and at least one suction cup (62); the angle adjustment plate (61) is provided with a first connecting hole (611) and a waist groove (612); the second connecting rod (412) is provided with two through holes (4121) respectively connected to the first connecting hole (611) and the waist groove (612); the suction cup (62) is arranged on the angle adjustment plate (61).

6. The barrel-shaped workpiece removal jig according to claim 1, characterized in that: It also includes a plurality of release agent spray heads (70); the release agent spray heads (70) are respectively arranged on the jig plate (10) through universal connectors (80).

7. The barrel-shaped workpiece removal jig according to claim 6, characterized in that: It also includes a fixed installation plate (20); the fixed installation plate (20) is connected to the fixture plate (10); and the release agent nozzles (70) are respectively arranged on the fixed installation plate (20) through universal connectors (80).

8. The barrel-shaped workpiece removal jig according to claim 7, characterized in that: The spraying position of each release agent spray head (70) corresponds to the adsorption position of a suction cup group (60).

9. The barrel-shaped workpiece removal jig according to claim 1, characterized in that: The driving source (30) is a cylinder.

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