Jig for automatically assembling screws and nuts of products

Abstract

The utility model discloses a jig for automatically assembling product screws and nuts, which comprises a lower fixed carrier plate, a jig assembly and a mold opening limiting piece, the jig assembly comprises a lower jig plate and an upper jig plate fixedly mounted on the lower jig plate, a sliding connection groove is formed in the upper jig plate, a material clamping plate is mounted in the sliding connection groove in a sliding manner, and the mold opening limiting piece is fixedly mounted on the lower jig plate. A sliding connecting hole is formed in the material clamping plate, a linear guide rod is arranged in the sliding connecting hole, one end of the linear guide rod is connected with the upper jig plate, the other end of the linear guide rod is fixedly connected with a limiting head, a material clamping spring is sleeved between the limiting head and the material clamping plate, an opening and closing arm is arranged on the material clamping plate, and the opening and closing arm is connected with a mold opening limiting piece. According to the utility model, the automatic opening of the material clamping plate is realized through the mold opening limiting piece, and the automatic opening of the material clamping plate at a screw feeding station can be realized only by driving the lower fixed carrier plate to rotate through one rotating mechanism, so that the feeding and the discharging are convenient, two air cylinders are saved, and the manufacturing cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to an automatic assembly equipment field, especially a kind of product screw nut automatic assembly jig. BACKGROUND

[0002] A kind of product (such as the product in the drawing of specification Figure 3 It needs to be fixed by screw with corresponding main body on both sides, the main body of product and the screw on both sides need to be matched when producing the product, in order to facilitate matching, nut and screw are locked on both sides of product, so as to realize the effect of package, the prior art is assembled by artificial, process is more cumbersome, and work efficiency is low, in order to realize the effect of quick assembly, application number is: 202522049418.8 discloses a kind of product screw nut automatic assembly device, the assembly jig in which needs two cylinders to be controlled to open and close, due to space limitation, the complexity of device is increased by cylinder control, while jig itself needs to rotate all the time, prone to cause air path failure, affect service life, for this, a kind of new assembly jig structure is given. UTILITARIAN CONTENT

[0003] The main purpose of the utility model is to provide a kind of product screw nut automatic assembly jig, including jig for screw and product assembly positioning, reduce the complexity of structure, and guarantee the stability of structure operation.

[0004] In order to achieve the above-mentioned purpose, the technical scheme adopted by the utility model is as follows: a kind of product screw nut automatic assembly jig, including lower fixed carrier plate, jig assembly and mold opening limiting piece, the upper end surface of the lower fixed carrier plate is fixedly installed with jig assembly at both ends respectively, the jig assembly includes upper jig plate fixedly installed on lower jig plate, the upper jig plate is provided with sliding connection slot, the sliding connection slot is slidably installed with clamping plate, the clamping plate and sliding connection slot are provided with screw positioning slot, the clamping plate is provided with sliding connection hole, the sliding connection hole is slidably installed with straight line guide rod, one end of the straight line guide rod is fixedly connected with the upper jig plate, the other end of the straight line guide rod extends through sliding connection hole and is fixedly connected with limiting head, clamping spring is sleeved between the limiting head and clamping plate, the clamping plate is further provided with opening and closing arm, and the opening and closing arm is slidably connected with mold opening limiting piece.

[0005] Further, the opening and closing arm includes extension arm, rotary connecting rod and rotary connecting sleeve, the rotary connecting rod is fixedly installed at the end of the extension arm, and the rotary connecting sleeve is sleeved on the rotary connecting rod.

[0006] Further, the rotary connecting sleeve and the rotary connecting rod are freely rotatable connected.

[0007] Further, the mold opening limiting piece is provided with a mold opening limiting groove, and the opening of the mold opening limiting groove is provided with a guide inlet.

[0008] Further, the upper surface of the mold opening limiting piece is lower than the lower surface of the clamping plate, and the mold opening limiting piece is further provided with a position avoiding chamfer.

[0009] Further, the lower jig plate is provided with a screw head sliding limiting groove, and the screw head sliding limiting groove is arranged below the screw positioning groove.

[0010] Compared with the prior art, the mold opening limiting piece has the following advantages.

[0011] The mold opening limiting piece is used for automatically opening the clamping plate, only one rotating mechanism is needed to drive the lower fixed carrier plate to rotate, the clamping plate can be automatically opened at the screw feeding station, feeding and discharging are facilitated, two cylinders are saved, and the manufacturing cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a perspective view of the utility model;

[0013] Figure 2 It is a top view of the utility model;

[0014] Figure 3 It is a perspective view of the utility model product.

[0015] Reference signs: 1. lower fixed carrier plate; 2. mold opening limiting piece; 3. lower jig plate; 4. upper jig plate; 5. sliding connection groove; 6. clamping plate; 7. screw positioning groove; 8. straight line guide rod; 9. limiting head; 10. clamping spring; 11. opening and closing arm; 13. extension arm; 14. rotating connection rod; 15. rotating connection sleeve; 16. mold opening limiting groove; 17. guide inlet; 18. position avoiding chamfer; 19. screw head sliding limiting groove; 20. product main body; 21. inverted screw; 22. nut. DETAILED DESCRIPTION

[0016] The preferred embodiments of the utility model are described in detail below with reference to the drawings, so that the advantages and characteristics of the utility model can be more easily understood by those skilled in the art, and the protection scope of the utility model can be more clearly and explicitly defined.

[0017] Reference is made to Figures 1-2The utility model discloses a kind of product screw nut automatic assembly jigs, including lower fixed carrier plate 1, jig assembly and open mould limiting piece 2, the upper end surface of this lower fixed carrier plate 1 is respectively fixedly installed with jig assembly at both ends, the jig assembly includes upper jig plate 4 fixedly installed on lower jig plate 3, sliding connection groove 5 is formed on the upper jig plate 4, clamp plate 6 is slidably installed in the sliding connection groove 5, screw positioning groove 7 is formed between the clamp plate 6 and sliding connection groove 5, screw head sliding limiting groove 19 is formed on the lower jig plate 3, and the screw head sliding limiting groove 19 is located below screw positioning groove 7.

[0018] Wherein the lower fixed carrier plate 1 is connected with rotating device below, rotates the lower fixed carrier plate 1 by rotating device, so that the two jig assemblies above the lower fixed carrier plate 1 are respectively in screw feeding station (or finished product discharging station) and nut and product feeding station, the screw is first fed between clamp plate 6 and upper jig plate 4 by mechanical hand, and the screw head of screw is placed in screw head sliding limiting groove 19, when clamp plate 6 is closed, it will push screw close to screw positioning groove 7 of upper jig plate 4, so that screw is clamped between clamp plate 6 and upper jig plate 4.

[0019] Sliding connection hole is formed on the clamp plate 6, and linear guide rod 8 is slidably installed in the sliding connection hole, one end of the linear guide rod 8 is fixedly connected with the upper jig plate 4, the other end of the linear guide rod 8 extends through the sliding connection hole and is fixedly connected with limiting head 9, clamp spring 10 is sleeved on the linear guide rod 8 between the limiting head 9 and the clamp plate 6, clamp plate 6 and upper jig plate 4 are always kept tightly fitted by spring, and in order to facilitate the feeding of screw, opening and closing arm 11 is fixedly arranged on clamp plate 6, opening and closing arm 11 is slidably connected with open mould limiting piece 2, and open mould limiting piece 2 is arranged on one side of lower fixed carrier plate 1 and is used for moving clamp plate 6 to open mould limiting piece 2 to form the effect that clamp plate 6 is opened.

[0020] The opening and closing arm 11 includes extension arm 13, rotary connecting rod 14 and rotary connecting sleeve 15, the rotary connecting rod 14 is fixedly installed at the tail end of the extension arm 13, and the rotary connecting sleeve 15 is sleeved on the rotary connecting rod 14.

[0021] The rotary connecting sleeve 15 and the rotary connecting rod 14 are freely rotatable.

[0022] The open mould limiting piece 2 is provided with open mould limiting groove 16, and the opening of the open mould limiting groove 16 is provided with guide inlet 17.

[0023] When one jig assembly on the lower fixed carrier plate 1 is about to move to the screw feeding station, the rotary connecting rod 14 drives the rotary connecting sleeve 15 to slide into the open mould limiting groove 16, and the groove width of the open mould limiting groove 16 is slightly greater than the maximum outer diameter of the rotary connecting sleeve 15.

[0024] As Figure 2 shown, the centers of the three dashed circles in the figure are the same as the center of the rotation of the lower fixed carrier plate 1, R1 is the distance from the axis of the rotating connecting rod 14 to the center of rotation of the lower fixed carrier plate 1 after the opening of the material clamping plate 6, R2 is the distance from the axis of the rotating connecting rod 14 to the center of rotation of the lower fixed carrier plate 1 in the closed state of the material clamping plate 6, R3 is the distance from the maximum outer diameter of the rotation of the lower fixed carrier plate 1 to the center of rotation of the lower fixed carrier plate 1, and R4 is the main body width of the mold opening limiting groove 16.

[0025] The circle of R2 falls into the opening end of the mold opening limiting groove 16, that is, in the closed state of the material clamping plate 6, the rotating connecting sleeve 15 will enter the opening end of the mold opening limiting groove 16 with the rotating connecting rod 14, and move from the opening end to the other end, and the groove center position of the other end of the mold opening limiting groove 16 coincides with the circle of R1, so as to drive the material clamping plate 6 to open to a specified degree, and as the rotating connecting sleeve 15 moves away from the mold opening limiting groove 16, the material clamping plate 6 will be affected by the material clamping spring 10 to realize the clamping effect of the screw.

[0026] The upper surface height of the mold opening limiting piece 2 is lower than the lower surface height of the material clamping plate 6, and a position-avoiding chamfer 18 is further formed in the mold opening limiting piece 2.

[0027] In order to prevent the mold opening limiting piece 2 from affecting the normal rotation of the jig, the position-avoiding chamfer 18 is formed in the mold opening limiting piece 2, which avoids the path of the R3 circle, and the upper surface height of the mold opening limiting piece 2 is lower than the lower surface height of the material clamping plate 6, which further prevents the material clamping plate 6 from colliding with the mold opening limiting piece 2 when opening.

[0028] The above only describes the preferred embodiments of the present application, and the protection scope of the present application is not limited to the above embodiments, but any equivalent modifications or changes made by those skilled in the art according to the disclosed content of the present application shall be included in the protection scope recorded in the claims.

Claims

1. A fixture for automatic assembly of product screws and nuts, comprising a lower fixed carrier plate (1), a fixture assembly and a mold opening limiter (2), wherein the fixture assembly is fixedly installed at both ends of the upper end face of the lower fixed carrier plate (1), the fixture assembly comprising a lower fixture plate (3) fixedly installed on the lower fixture plate (3) and an upper fixture plate (4), wherein a sliding connection groove (5) is provided on the upper fixture plate (4), a clamping plate (6) is slidably installed in the sliding connection groove (5), a screw positioning groove (7) is provided between the clamping plate (6) and the sliding connection groove (5), and a sliding connection hole is provided on the clamping plate (6), wherein a linear guide rod (8) is slidably installed in the sliding connection hole, characterized in that: One end of the linear guide rod (8) is fixedly connected to the upper fixture plate (4), and the other end of the linear guide rod (8) extends through the sliding connection hole and is fixedly connected to the limiting head (9). A clamping spring (10) is fitted on the linear guide rod between the limiting head (9) and the clamping plate (6). An opening and closing arm (11) is also fixedly provided on the clamping plate (6). The opening and closing arm (11) is slidably connected to the mold opening limiting member (2). The mold opening limiting member (2) is located on one side of the lower fixed carrier plate and is used to move the clamping plate (6) to the mold opening limiting member (2) to form the effect of opening the clamping plate (6).

2. The fixture for automatic assembly of product screws and nuts according to claim 1, characterized in that: The opening and closing arm (11) includes an extension arm (13), a rotating connecting rod (14) and a rotating connecting sleeve (15). The end of the extension arm (13) is fixedly installed with the rotating connecting rod (14), and the rotating connecting sleeve (15) is fitted on the rotating connecting rod (14).

3. The fixture for automatic assembly of product screws and nuts according to claim 2, characterized in that: The rotating connecting sleeve (15) and the rotating connecting rod (14) are connected in a freely rotatable manner.

4. The fixture for automatic assembly of product screws and nuts according to claim 1, characterized in that: The mold opening limiting member (2) is provided with a mold opening limiting groove (16), and the opening of the mold opening limiting groove (16) is provided with a guide entrance (17).

5. The jig for automatic assembly of product screws and nuts according to claim 1, characterized in that: The upper surface of the mold opening limiter (2) is lower than the lower surface of the clamping plate (6), and the mold opening limiter (2) is also provided with a chamfer (18).

6. The jig for automatic assembly of product screws and nuts according to claim 1, characterized in that: The lower fixture plate (3) is provided with a screw head sliding limit groove (19), which is located below the screw positioning groove (7).

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