Screw assembling mechanism for clamp

Abstract

The screw assembling mechanism comprises a base, a guide rail, a movable seat, a fixed seat, a workpiece installation seat, a servo motor, a torsion meter, a screwdriver and a first actuator, the guide rail and the fixed seat are arranged on the base, the movable seat is arranged on the guide rail in a sliding mode, the servo motor is installed on the movable seat, and the first actuator is installed on the fixed seat. The screwdriver is connected with the servo motor through the torsion meter, the servo motor is used for driving the screwdriver to rotate, the workpiece installation base is detachably installed on the fixed base, the first actuator is connected with the movable base, and the movable base is driven by the first actuator to horizontally move along the guide rail. The size of the clamp is guaranteed by arranging the workpiece mounting seat, the screwing depth of a screw is guaranteed by monitoring a torsion value, the assembly efficiency of the clamp is improved, and the labor cost is reduced. The screwdriver is in axial sliding connection, axial thrust is provided through a spring, and it is guaranteed that the screwdriver is adjusted in a self-adaptive mode along with screwing-in of a screw.

Description

Technical Field

[0001] This utility model relates to the field of clamp assembly, and in particular to a screw assembly mechanism for clamps. Background Technology

[0002] A clamp is a locking component with a C-shaped structure. Its end is connected by a screw, and the clamp is tightened by rotating the screw. Currently, the clamp and screw are pre-installed at the factory. This is typically done by workers assembling the screw and then tightening it with a screwdriver. However, this method leads to over-installation of the screw, requiring customers to manually loosen it before use. Therefore, the screw insertion depth needs to be limited at the factory. Consequently, the existing method cannot meet customer requirements. Utility Model Content

[0003] To address the shortcomings of existing technologies, the main objective of this utility model is to overcome these deficiencies by disclosing a screw assembly mechanism for clamps, comprising a base, a guide rail, a movable seat, a fixed seat, a workpiece mounting seat, a servo motor, a torque meter, a screwdriver, and a first actuator. The guide rail and the fixed seat are mounted on the base, the movable seat is slidably mounted on the guide rail, the servo motor is mounted on the movable seat, the screwdriver is connected to the servo motor via the torque meter, and the servo motor drives the screwdriver to rotate. The workpiece mounting seat is detachably mounted on the fixed seat, and the first actuator is connected to the movable seat, driving the movable seat to move horizontally along the guide rail.

[0004] Furthermore, the screwdriver includes a fixed rod, a movable rod, a spring, and a guide pin. One end of the fixed rod is recessed with a first guide groove, and the side wall of the fixed rod is radially provided with a second guide groove. The spring and the movable rod are disposed in the first guide groove, and the guide pin is placed in the second guide groove and fixed to the movable rod. The end of the movable rod is provided with a drive part that cooperates with the screw.

[0005] Furthermore, the cross-section of the first guide groove is cross-shaped.

[0006] Furthermore, the fixed base is provided with an adjustable support plate, and the support plate is provided with a positioning groove.

[0007] Furthermore, the support plate is provided with a waist-shaped hole, the fixing seat is provided with a screw hole, and the support plate is fixed to the fixing seat by screws.

[0008] Furthermore, the servo motor has protruding fixing plates on both sides, and the fixing plates are provided with waist-shaped holes. The fixing plates are fixed to the movable base by screws.

[0009] Further, the first actuator is a pneumatic cylinder.

[0010] Further, the screw assembling mechanism further comprises an ejection assembly, the ejection assembly comprises an ejection plate and a second actuator, the fixed seat and the workpiece mounting seat are provided with through holes corresponding to positions, the ejection plate is slidably arranged in the through hole, the second actuator is arranged on the fixed seat, the second actuator is connected with the ejection plate, and the ejection plate is driven to move horizontally by the second actuator.

[0011] Further, in the initial state, one end of the ejection plate protrudes out of the through hole of the fixed seat.

[0012] Further, at least two ejection parts are arranged on the ejection plate, and the ejection parts are distributed at equal intervals in a circle.

[0013] The utility model discloses the beneficial effects achieved:

[0014] The utility model discloses the beneficial effects achieved:The screwdriver adopts axial sliding connection, and axial thrust is provided through a spring, so that the screwdriver is automatically adjusted along with the screwing of the screw. The ejection assembly is arranged on the fixed seat, so that the clamp is uniformly stressed when blanking, and the clamp is effectively prevented from being blocked to improve the blanking efficiency of the clamp. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a three-dimensional structure schematic view of a screw assembling mechanism for a clamp of the utility model;

[0016] Figure 2 It is another perspective three-dimensional structure schematic view of Figure 1

[0017] Figure 3 It is a three-dimensional structure schematic view of the rear view of Figure 1

[0018] Figure 4 It is an assembly schematic view of the fixed seat and the workpiece mounting seat;

[0019] Figure 5 It is an A-A sectional view of Figure 4

[0020] Figure 6 It is a three-dimensional structure schematic view of a screwdriver;

[0021] Figure 7 It is an internal structure schematic view of a screwdriver;

[0022] Figure 8 ​​A use state schematic view of a screw assembling mechanism for a clamp.

[0023] The reference signs are as follows:

[0024] 1, base, 2, guide rail, 3, moving seat, 4, fixed seat, 5, workpiece mounting seat, 6, servo motor, 7, torque meter, 8, screwdriver, 9, first actuator, 10, ejection assembly, 41, support plate, 42, positioning groove, 61, fixed plate, 81, fixed rod, 82, moving rod, 83, spring, 84, guide pin, 811, second guide groove, 821, guide part, 101, ejection plate, 102, second actuator, 1011, ejection part. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the utility model more clearly, the utility model will be further described in detail below with the help of the drawings and examples. It should be understood that the specific examples described here are only used to explain the utility model, and are not used to limit the utility model.

[0026] A screw assembling mechanism for a clamp, as shown in Figures 1-8 The utility model discloses a screw assembling mechanism for a clamp, which comprises a base 1, a guide rail 2, a moving seat 3, a fixed seat 4, a workpiece mounting seat 5, a servo motor 6, a torque meter 7, a screwdriver 8 and a first actuator 9. The guide rail 2 and the fixed seat 4 are arranged on the base 1. The moving seat 3 is slidably arranged on the guide rail 2. The first actuator 9 is installed on the base 1 and connected with the moving seat 3. The moving seat 3 is driven to move horizontally along the guide rail 2 by the first actuator 9. The workpiece mounting seat 5 is detachably installed on the fixed seat 4 and can be replaced according to the size of the clamp. The servo motor 6 is installed on the moving seat 3. The screwdriver 8 is connected with the servo motor 6 through the torque meter 7. The screwdriver 8 is driven to rotate by the servo motor 6. The workpiece mounting seat 5 is provided with a circular protrusion matched with the clamp, which is used to limit the diameter of the clamp after assembly. When in use, the worker puts the screw into the hole of the clamp, then installs the clamp on the workpiece mounting seat 5, starts the equipment, and drives the moving seat 3 to move towards the clamp by the first actuator 9. The screwdriver 8 is connected with the screw on the clamp. The servo motor 6 drives the screwdriver to rotate and collects the current torque value through the torque meter. The screw depth is determined according to the torque value. In this way, the screw can be installed in place.

[0027] In an embodiment, as Figures 1-8As shown, the screwdriver 8 comprises a fixed rod 81, a moving rod 82, a spring 83 and a guide pin 84, one end of the fixed rod 81 is recessed with a first guide slot, a second guide slot 811 is radially arranged on the sidewall of the fixed rod 81, the spring 83 and the moving rod 82 are arranged in the first guide slot, the guide pin 84 is arranged in the second guide slot and fixed with the moving rod 82, and an end of the moving rod 82 is provided with a driving part matched with the screw. The spring 83 provides an axial thrust for the moving rod 82, and the moving rod 82 is limited by the cooperation of the guide pin 84 and the second guide slot 811.

[0028] In the above embodiment, as shown in Figures 1-8 , the cross section of the first guide slot is in the shape of a "cross", and a guide part 821 matched with the first guide slot is arranged on the moving rod 82, the first guide slot cooperates with the guide part 821 to guide the axial movement of the moving rod 82, so that the driving force of the servo motor 6 driving the fixed rod 81 is transmitted to the moving rod 82.

[0029] In an embodiment, as shown in Figures 1-8 , a support plate 41 adjustable up and down is arranged on the fixed seat 4, and a positioning slot 42 is arranged on the support plate 41. One end of the clamp is arranged in the positioning slot 42, and the support plate 41 is used to support the clamp to ensure that the screwdriver 8 contacts the screw on the clamp.

[0030] In the above embodiment, as shown in Figures 1-8 , a waist-shaped hole is arranged on the support plate 41, and a screw hole is arranged on the fixed seat 4, and the support plate 41 is fixed with the fixed seat 4 by screws. By arranging the waist-shaped hole, the position of the support plate 41 can be adjusted vertically, and then the clamp of different sizes can be adapted.

[0031] In an embodiment, as shown in Figures 1-8 , the servo motor 6 is provided with a fixed plate 61 on both sides, a waist-shaped hole is arranged on the fixed plate, and the fixed plate 61 is fixed with the moving seat 3 by screws. By arranging the waist-shaped hole, the height position of the servo motor 6 can be adjusted, and then the screwdriver 8 and the screw on the clamp are adjusted to be at the same height.

[0032] In an embodiment, as shown in Figures 1-8 , the first actuator 9 is a pneumatic cylinder.

[0033] In an embodiment, as shown in Figures 1-8As shown, the screw assembly mechanism also includes an ejector assembly 10, which includes an ejector plate 101 and a second actuator 102. Through holes are provided at corresponding positions on the fixed base 4 and the workpiece mounting base 5. The ejector plate 101 is slidably disposed within the through hole. The second actuator 102 is mounted on the fixed base 4 and connected to the ejector plate 101, driving the ejector plate 101 to move horizontally. In use, the clamp is installed on the workpiece mounting base 5. After the screw is tightened, a certain clamping force exists between the clamp and the workpiece mounting base 5. The second actuator 102 drives the ejector plate 101 to move, protruding from the through hole, thereby pushing the clamp to move axially to achieve unloading. Removing the part by hand would be very difficult, affecting the assembly progress.

[0034] In one embodiment, such as Figures 1-8 As shown, in the initial state, one end of the ejector plate 101 protrudes from the through hole of the fixed seat 4. The workpiece mounting seat 5 is usually connected to the fixed seat 4 by screws. The ejector plate 101 makes the through hole of the fixed seat 4 correspond to that of the workpiece mounting seat 5, thereby positioning the workpiece mounting seat 5 and preventing misalignment that would prevent the ejector plate 101 from being ejected smoothly.

[0035] In one embodiment, such as Figures 1-8 As shown, at least two ejector parts 1011 are provided on the ejector plate 101. The ejector parts 1011 are distributed at equal intervals around the circumference, so that the clamp is subjected to uniform force during ejection.

[0036] In the above embodiments, such as Figures 1-8 As shown, the second actuator 102 is a cylinder.

[0037] When using this utility model, such as Figures 1-8 As shown, after assembling the clamp and screw, it is fitted onto the workpiece mounting base 5, with one end of the clamp placed in the positioning groove 42. Then, the equipment is started, and the first actuator 9 pushes the moving base 3 to move towards the clamp. When the screwdriver 8 contacts the screw on the clamp, the moving rod 82 moves axially, the spring 83 is compressed, and the servo motor 6 drives the screwdriver 8 to rotate. Because the spring 83 always applies an axial thrust to the moving rod 82, when the servo motor 6 drives the screwdriver 8 to rotate, it can connect the screwdriver 8 to the screw; and ensure that the screwdriver is always connected to the screw as the screw is screwed in. During the rotation of the screwdriver 8, the torque meter 7 continuously monitors the torque value. When the set torque value is reached, the servo motor 6 stops rotating, the first actuator 9 drives the moving base 3 to reset; the second actuator 102 drives the ejector plate 101 to push the clamp to move axially, so that the clamp is separated from the workpiece fixing base 5.

[0038] The above merely is the preferred embodiment of the present utility model, and is not used to limit the implementation range of the present utility model; if the present utility model is modified or replaced equivalently without departing from the spirit and range of the present utility model, all should be covered in the protection range of the present utility model claim.

Claims

1. A screw assembly mechanism for a clamp, characterized by, The screwdriver includes a fixed rod, a moving rod, a spring and a guide pin, one end of the fixed rod is recessed with a first guide slot, a second guide slot is arranged on the side wall of the fixed rod in a radial direction, the spring and the moving rod are arranged in the first guide slot, the guide pin is arranged in the second guide slot and fixed with the moving rod, and an end of the moving rod is provided with a driving part matched with a screw. The first guide slot has a cross section in the shape of a "cross".

2. A screw assembly mechanism for a clamp according to claim 1, wherein A support plate that can be adjusted up and down is arranged on the fixed seat, and a positioning slot is arranged on the support plate.

3. A screw assembly mechanism for a clamp as claimed in claim 1, wherein, A waist-shaped hole is arranged on the support plate, a screw hole is arranged on the fixed seat, and the support plate is fixed with the fixed seat by means of a screw.

4. A screw assembly mechanism for a clamp according to claim 3, wherein Fixed plates are protruded on both sides of the servo motor, a waist-shaped hole is arranged on the fixed plate, and the fixed plate is fixed with the moving seat by means of a screw.

5. A screw assembly mechanism for a clamp as claimed in claim 1, wherein, The first actuator is a pneumatic cylinder.

6. A screw assembly mechanism for a clamp as defined in claim 1, wherein The screw assembly mechanism further includes an ejection assembly, the ejection assembly includes an ejection plate and a second actuator, a through hole is arranged in a corresponding position of the fixed seat and the workpiece mounting seat, the ejection plate is slidably arranged in the through hole, the second actuator is mounted on the fixed seat, the second actuator is connected with the ejection plate, and the ejection plate is horizontally moved by means of the second actuator.

7. A screw assembly mechanism for a clamp as defined in claim 1, wherein In the initial state, one end of the ejection plate protrudes out of the through hole of the fixed seat.

8. A screw assembly mechanism for a clamp according to claim 7, wherein At least two ejection parts are arranged on the ejection plate, and the ejection parts are distributed in a circumferential direction at equal intervals.

9. A screw assembly mechanism for a clamp as defined in claim 7, wherein ​

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