Double-station jig automatic exchange sewing machine

Abstract

The present invention relates to the field of automobile airbag processing equipment, and in particular to a double-station jig automatic exchange sewing machine, comprising a frame, two grab assemblies, two racks and a sewing machine, wherein the frame comprises a base frame and a work surface fixed to the top of the base frame, the grab assembly and the rack are symmetrically arranged on both sides of the work surface, and the sewing machine is arranged in the middle of the two grab assemblies; the grab assembly comprises a displacement mechanism and a limit mechanism, and a mobile rack perpendicular to the movement direction of the mobile mechanism is also arranged on the work surface; the displacement mechanism transports the jig and the cut pieces thereon to the mobile rack, and then the mobile rack is sent to the sewing machine for sewing. The present invention only requires at most one staff member to complete the replacement of the cut piece jig, has high work efficiency, effectively saves labor costs, and improves economic benefits.

Description

Technical Field

[0001] The invention relates to the field of automobile airbag processing equipment, in particular to a double-station fixture automatic exchange sewing machine. Background Art

[0002] The automobile airbag cut pieces need to be placed on a jig for sewing, and the jig is also a common fixed tooling in the sewing process.

[0003] During the sewing process, after sewing is completed, the original jigs and cut pieces need to be taken out, and then new jigs and cut pieces need to be put into the sewing machine before the next round of sewing can be carried out. In this process, at least two operators are required to complete it, that is, one person takes and one person puts, and the degree of automation is not high. Summary of the invention

[0004] The technical problem to be solved by the present invention is: in view of the above-mentioned defects, a double-station jig automatic exchange sewing machine which only requires one person is provided.

[0005] The specific plan is as follows:

[0006] A double-station jig automatic exchange sewing machine, comprising a frame, two grab assemblies, two racks and a sewing machine, wherein the frame comprises a base frame and a work surface fixed to the top of the base frame, the grab assemblies and the racks are symmetrically arranged on both sides of the work surface, and the sewing machine is arranged in the middle of the two grab assemblies;

[0007] The grab assembly includes a displacement mechanism and a limit mechanism, and a moving frame perpendicular to the moving direction of the moving mechanism is also provided on the work surface;

[0008] The displacement mechanism transports the jig and the cut pieces thereon to the movable frame, and then the movable frame transports the jig and the cut pieces thereon to the sewing machine for sewing.

[0009] Furthermore, the displacement mechanism includes a suction mechanism and a moving mechanism, the moving mechanism is disposed below the storage rack and can move in a direction perpendicular to the moving direction of the moving rack, and the suction mechanism is disposed at an end of the moving mechanism and can suck up the fixture.

[0010] Furthermore, the moving mechanism comprises a guide rail group fixed to the bottom of the storage rack, the guide rail group is provided with a connecting frame which can move freely along the guide rail group, and the guide rail group is perpendicular to the setting direction of the moving frame.

[0011] Furthermore, the suction mechanism includes a telescopic cylinder arranged at the end of the first connecting piece and extending toward the fixture, a chassis is fixed to the bottom of the telescopic cylinder, and a plurality of first electromagnets that can attract the fixture are arranged on the upper surface of the chassis.

[0012] Furthermore, the limiting mechanism comprises a support frame arranged below the work surface, a lifting cylinder is arranged on the support frame, a transition piece is arranged on the top of the lifting cylinder, and a limiting enclosure plate is fixed on the transition piece.

[0013] Furthermore, an arc-shaped groove matching the shape of the limiting enclosure is provided on the work surface, and when the lifting cylinder is raised, the limiting enclosure can extend through the arc-shaped groove.

[0014] Furthermore, the limiting enclosure is provided with a groove matching the edge of the jig.

[0015] Furthermore, it also includes a positioning mechanism, which includes a second electromagnet and a third electromagnet respectively arranged at the starting position and the ending position of the displacement mechanism.

[0016] Furthermore, a plurality of accommodating holes are provided on the work surface, and the second electromagnet and the third electromagnet are accommodated in the accommodating holes.

[0017] Furthermore, a storage box is fixed on the top of the storage rack.

[0018] The advantages of the technical solution of the present invention compared with the traditional technical solution are:

[0019] 1. The present invention only requires one worker at most to complete the replacement of the cutting jig, which has high work efficiency, effectively saves labor costs and improves economic benefits.

[0020] 2. The present invention adopts a magnetic suction structure to automatically grab and put down the jig, and there is no need for workers to personally deliver it to the sewing machine, so the degree of automation is high.

[0021] 3. The present invention is also provided with a positioning mechanism, which can accurately judge and confirm whether the position reached by the cut piece is a reasonable position to prevent it from being offset. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The foregoing and other objects, features and advantages of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings.

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

[0024] Figure 2 It is a schematic diagram of the three-dimensional structure after the work surface and the sewing machine of the present invention are connected;

[0025] Figure 3 It is a schematic diagram of the structure of the grab assembly of the present invention;

[0026] Figure 4 It is a structural schematic diagram of the working table and the fixture of the present invention when they are placed in the initial position;

[0027] Figure 5 for Figure 4 Schematic diagram of the rear side view;

[0028] Figure 6 for Figure 4 Schematic diagram of the right side perspective;

[0029] Figure 7 It is a schematic diagram of the structure of the limiting mechanism of the present invention.

[0030] in:

[0031] A. Fixture;

[0032] 10. Frame, 11. Work surface, 111. Arc groove, 112. Accommodation hole, 12. Mobile frame;

[0033] 20. Grab the assembly;

[0034] 30. displacement mechanism, 31. moving mechanism, 311. guide rail assembly, 312. connecting frame, 32. suction mechanism, 321. telescopic cylinder, 322. chassis, 323. first electromagnet;

[0035] 40. Limiting mechanism, 41. Support frame, 42. Lifting cylinder, 43. Transition piece, 44. Limiting enclosure, 441. Groove;

[0036] 50. Positioning mechanism, 51. Second electromagnet, 52. Third electromagnet;

[0037] 60. Storage rack, 61. Storage box;

[0038] 70. Sewing machine. DETAILED DESCRIPTION

[0039] The following is an ideal embodiment of the present invention. Through the following description, relevant staff can make various changes and modifications without departing from the technical concept of the present invention. The technical scope of the present invention is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

[0040] The present invention will be further described with reference to the following drawings:

[0041] refer to Figure 1, a double-station fixture automatic exchange sewing machine 70, comprising a frame 10, two grab assemblies 20, two racks 60 and a sewing machine 70, wherein the frame 10 comprises a base frame and a work surface 11 fixed to the top of the base frame, the grab assemblies 20 and the racks 60 are symmetrically arranged on both sides of the work surface 11, and the sewing machine 70 is arranged in the middle of the two grab assemblies 20;

[0042] The grabbing assembly 20 includes a displacement mechanism 30 and a limiting mechanism 40, and a movable frame 12 perpendicular to the movement direction of the movable mechanism 31 is also provided on the work surface 11; the displacement mechanism 30 transports the jig and the cut pieces thereon to the movable frame 12, and then the movable frame 12 transports them to the sewing machine 70 for sewing.

[0043] like Figure 1 In the above-mentioned double-station jig automatic exchange sewing machine 70, the bottom of the frame 10 is a detachable and installable frame structure built with a metal frame, and a freely movable universal wheel is fixed at the bottom to facilitate the movement of the entire machine.

[0044] A work surface 11 is fixed on the top of the frame 10. In this embodiment, the work surface 11 and the frame 10 are fixed by welding. Of course, they can also be fixed by bonding or other fixing methods such as screws and bolts, which is not limited in this embodiment.

[0045] In the above-mentioned sewing machine 70, it can be seen that the sewing machine 70 with the head facing the work surface 11 is arranged on the rear side of the frame 10, and a clearance hole is opened on the work surface 11 at the bottom of the head of the sewing machine 70 to facilitate the operation of the sewing machine 70. The grab assembly 20 is symmetrically arranged at the left front and right front of the sewing machine 70, and a storage rack 60 is arranged outside the grab assembly 20. The storage rack 60 is L-shaped, one side of which is arranged perpendicular to the work surface 11, and a storage box 61 is arranged on the top of the other side, and a part of the grab assembly 20 is fixed below.

[0046] The movable frame 12 is installed on the work surface 11 and is designed at the rear end of the sewing machine 70 to receive the jig delivered by the grab assembly 20 .

[0047] In the present invention, the jig is initially placed on the rack 60, and the staff takes out one side of the jig and places it on the grab assembly 20, which is then sent to the mobile rack 12, and then sent to the sewing machine 70 by the mobile rack 12 for sewing.

[0048] During this process, the operator can put the jig on the other side into the corresponding workstation, and after the jig and the cut pieces on it are sewn, they are sent out by the moving frame 12 and the grab assembly 20, and then the jig on the side that has not been sent into the sewing machine 70 is further sent into the sewing machine 70, and the cycle is repeated. It does not require manual removal of the jig, and the jig and cut pieces to be sewn can be put in during the interval time when the sewing machine 70 is working, which has high production efficiency.

[0049] like Figure 1-3 The displacement mechanism 30 includes a suction mechanism 32 and a moving mechanism 31. The moving mechanism 31 is disposed below the storage rack 60 and can move in a direction perpendicular to the moving direction of the moving rack 12. The suction mechanism 32 is disposed at the end of the moving mechanism 31 and can suck up the fixture.

[0050] The moving mechanism 31 includes a guide rail set 311 fixed to the bottom of the storage rack 60 . The guide rail set 311 is provided with a connecting frame 312 that can move freely along the guide rail set 311 . The guide rail set 311 is perpendicular to the setting direction of the moving rack 12 .

[0051] In the above-mentioned moving mechanism 31, the guide rail group 311 includes three parallel guide rails, of which the middle one is the main guide rail and the two sides are stabilizing guide rails, the purpose of which is to prevent the connecting frame 312 from tipping over and reduce the probability of the connecting frame 312 falling out. In this embodiment, the connecting frame 312 moves along the y direction, while the moving frame 12 moves along the x direction.

[0052] The suction mechanism 32 includes a telescopic cylinder 321 arranged at the end of the first connecting member and extending toward the fixture. A chassis 322 is fixed to the bottom of the telescopic cylinder 321, and a plurality of first electromagnets 323 that can attract the fixture are arranged on the upper surface of the chassis 322.

[0053] In the above-mentioned moving mechanism 31 and suction mechanism 32, as Figure 3 The jig has a middle circle made of iron, which can be attracted by the electromagnet. Therefore, when the telescopic cylinder 321 is pressed down, the first electromagnet 323 on the chassis 322 is energized, and the plurality of first electromagnets 323 can suck up the jig.

[0054] In a specific implementation process, the first electromagnets 323 should be evenly arranged on the chassis 322, generally 4 to 8 first electromagnets 323 are arranged, and 6 first electromagnets are arranged in this embodiment.

[0055] The limiting mechanism 40 includes a support frame 41 disposed below the work surface 11 , a lifting cylinder 42 is disposed on the support frame 41 , a transition piece 43 is disposed on the top of the lifting cylinder 42 , and a limiting enclosure plate 44 is fixed on the transition piece 43 .

[0056] An arc-shaped groove 111 matching the shape of the position-limiting enclosure 44 is formed on the work surface 11 . When the lifting cylinder 42 is raised, the position-limiting enclosure 44 can extend out through the arc-shaped groove 111 .

[0057] The limiting enclosure plate 44 is provided with a groove 441 matching the edge of the fixture.

[0058] The limiting plate 44 is in an arc shape, and its inner shape just matches the outer shape of the jig, and there is a notch on the inner shape of the limiting plate 44 to match the protrusion on the side of the jig. When the jig is put down, it can be embedded between the four limiting plates 44, so that the position of the jig can be ensured.

[0059] Under the action of the lifting cylinder 42, the limiting enclosure 44 and the transition piece 43 extend or retract through the arc groove 111, making it convenient for operators to take or put down the jig and the cut pieces.

[0060] The displacement mechanism 30 further comprises a positioning mechanism 50 , which comprises a second electromagnet 51 and a third electromagnet 52 which are respectively arranged at the starting position and the ending position of the displacement mechanism 30 .

[0061] A plurality of receiving holes 112 are formed on the work surface 11 , and the second electromagnet 51 and the third electromagnet 52 are received in the receiving holes 112 .

[0062] In the positioning mechanism 50, the electromagnets arranged at the starting position and the ending position respectively can attract the fixture to the designated position before the suction mechanism 32 grabs the fixture. When the suction mechanism 32 is powered on, the positioning mechanism 50 is powered off to release the fixture.

[0063] A storage box 61 is fixed to the top of the storage rack 60. The storage box contains unsewn jigs.

[0064] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. Double-station jig automatic exchange sewing machine, characterized by: It comprises a frame, two grabbing assemblies, two storage racks and a sewing machine, wherein the frame comprises a base frame and a work surface fixed on the top of the base frame, the grabbing assemblies and the storage racks are symmetrically arranged on both sides of the work surface, and the sewing machine is arranged in the middle of the two grabbing assemblies; The grab assembly includes a displacement mechanism and a limit mechanism, and a moving frame perpendicular to the movement direction of the displacement mechanism is also provided on the work surface; The displacement mechanism transports the jig and the cut pieces thereon to the movable rack, and then the movable rack transports them to the sewing machine for sewing; The displacement mechanism includes a suction mechanism and a moving mechanism, wherein the moving mechanism is disposed below the storage rack and can move in a direction perpendicular to the moving direction of the moving rack, and the suction mechanism is disposed at the end of the moving mechanism and can suck up the fixture; The moving mechanism comprises a guide rail group fixed to the bottom of the rack, the guide rail group is provided with a connecting frame which can move freely along the guide rail group, and the guide rail group is perpendicular to the setting direction of the moving frame; The suction mechanism comprises a telescopic cylinder arranged at the end of the connecting frame and extending toward the jig, a chassis is fixed at the bottom of the telescopic cylinder, and a plurality of first electromagnets capable of attracting the jig are arranged on the upper surface of the chassis; The limiting mechanism comprises a support frame arranged below the work surface, a lifting cylinder is arranged on the support frame, a transition piece is arranged on the top of the lifting cylinder, and a limiting enclosure plate is fixed on the transition piece; The work table is provided with an arc groove matching the shape of the limiting enclosure plate, and when the lifting cylinder is raised, the limiting enclosure plate can extend out through the arc groove.

2. The double-station jig automatic exchange sewing machine according to claim 1 is characterized in that: The limiting enclosure is provided with a groove matching the edge of the jig.

3. The double-station jig automatic exchange sewing machine according to claim 1 is characterized in that: It also includes a positioning mechanism, which includes a second electromagnet and a third electromagnet respectively arranged at the starting position and the ending position of the displacement mechanism.

4. The double-station jig automatic exchange sewing machine according to claim 3 is characterized in that: A plurality of accommodating holes are provided on the work surface, and the second electromagnet and the third electromagnet are accommodated in the accommodating holes.

5. The double-station jig automatic exchange sewing machine according to claim 1, characterized in that: A storage box is fixed on the top of the storage rack.

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