Elastic telescopic tightening shaft capable of automatically taking materials

Abstract

The utility model belongs to the field of tightening process tools, and discloses an elastic telescopic tightening shaft capable of automatically taking materials, which comprises an elastic telescopic tightening shaft, and a material taking component is mounted at the lower end of the elastic telescopic tightening shaft; the elastic telescopic tightening shaft comprises a first fixing plate, a first shaft sleeve and a second shaft sleeve are fixed to the first fixing plate, a first connecting sleeve is rotatably arranged in the first shaft sleeve, a second connecting sleeve is slidably arranged in the first connecting sleeve, a spring is arranged in the second connecting sleeve, and a sleeve transition head is fixed to the lower end of the second connecting sleeve. The sleeve transition head is sleeved with a pressing sleeve in sliding connection, the pressing sleeve is fixed to the lower end of the first connecting sleeve, a sleeve extension rod is fixed to the lower end of the sleeve transition head and slides in the second shaft sleeve, and a sleeve is fixed to the lower end of the sleeve extension rod; the material taking assembly comprises a second fixing plate, a finger air cylinder is fixed to the lower end of the second fixing plate, and clamping jaws are fixed to the two moving ends of the finger air cylinder. And material taking and tightening work of the bolt can be completed.

Description

Technical Field

[0001] This utility model belongs to the field of tightening process tools, specifically relating to an elastic retractable tightening shaft that can automatically pick up materials. Background Technology

[0002] On the automotive assembly and testing line, the tightening process is carried out by a tightening gun or a tightening shaft. Tightening guns are generally used in manual stations, requiring operators to hold the tightening gun and operate it manually. The bolt feeding and tightening processes are all done manually. Tightening shafts are generally used in automatic / semi-automatic stations, requiring the bolts to be pre-tightened into the corresponding bolt holes or fed in conjunction with a nail feeder.

[0003] The use of manual tightening guns depends on the operator's skill level, requiring manual handling of the entire process, including material picking, feeding, and tightening. This process is time-consuming and prone to errors, resulting in missed material picking, inaccurate feeding, and incomplete tightening. Automatic tightening shafts can only automatically tighten bolts, and the feeding process needs to be completed in advance. Generally, an additional station is added before tightening for pre-tightening or in conjunction with a nail feeder. Adding a station increases costs. Nail feeders are prone to feeding failures with bolts of a certain length-to-diameter ratio, and multiple feeding positions have high requirements for feeding, increasing costs and occupying a large amount of equipment space. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of this utility model is to provide an elastic and retractable tightening shaft that can automatically pick up materials, thus solving the problems in the background art.

[0005] The objective of this utility model can be achieved through the following technical solutions:

[0006] A resilient, extendable tightening shaft capable of automatically picking up materials includes:

[0007] An elastic telescopic tightening shaft, the lower end of which is fixedly equipped with a material handling component;

[0008] The elastic telescopic tightening shaft includes a first fixed plate arranged vertically. A first bushing and a second bushing are fixedly connected sequentially from top to bottom on one side of the first fixed plate. A first connecting sleeve is rotatably connected to the inner side of the first bushing. The upper end of the first connecting sleeve is closed and the lower end is open. A second connecting sleeve is slidably connected to the inner side of the first connecting sleeve along the vertical direction. The upper end of the second connecting sleeve is open and the lower end is closed. A spring is arranged vertically on the inner side of the second connecting sleeve. A sleeve transition head is fixedly connected to the lower end of the second connecting sleeve. A pressure sleeve is slidably connected to the sleeve transition head. The pressure sleeve is fixedly connected to the lower end of the first connecting sleeve. A sleeve extension rod is fixedly connected to the lower end of the sleeve transition head. The sleeve extension rod is slidably connected inside the second bushing. A sleeve is fixedly connected to the lower end of the sleeve extension rod.

[0009] The material handling assembly includes a second fixing plate fixedly connected to the side wall of the second bushing. A finger cylinder is fixedly connected to the lower end of the second fixing plate, and grippers are fixedly connected to the two moving ends of the finger cylinder.

[0010] The principles and technical effects of the above technical solution are as follows:

[0011] The elastic telescopic tightening shaft moves downwards, causing the bolt located directly below the sleeve to engage within the sleeve. When the bolt is engaged, the sleeve, sleeve extension rod, sleeve transition head, and second connecting sleeve cease downward movement. However, the first fixing plate continues to move the first and second bushings downwards. The first bushing then moves the first connecting sleeve downwards. At this point, the second connecting sleeve slides within the first connecting sleeve, compressing the spring. Simultaneously, the sleeve extension rod slides within the second bushing. Next, the finger cylinder drives the two grippers to move closer together, clamping the bolt. When tightening is required, the elastic telescopic tightening shaft moves downwards, aligning the bolt with the bolt mounting hole. The finger cylinder then moves the two grippers away from each other, releasing the bolt. The bolt is then pressed into the bolt mounting hole by the spring force. The drive source then rotates the first connecting sleeve, which in turn rotates the second connecting sleeve. The second connecting sleeve rotates the sleeve transition head, which in turn rotates the sleeve extension rod. The sleeve extension rod then rotates the sleeve, completing the tightening process.

[0012] In a preferred embodiment, the present invention can be further configured such that: a plurality of sliding grooves are vertically formed on the inner wall of the first connecting sleeve, and a plurality of sliders are fixedly connected vertically on the outer wall of the second connecting sleeve, the sliders being slidably connected in the sliding grooves.

[0013] In a preferred embodiment, the present invention can be further configured such that: a support plate is fixedly connected to the side wall of the first bushing, a detection switch is fixedly connected to the support plate, and a fixing ring is fixedly connected to the upper end of the sleeve extension rod.

[0014] In a preferred embodiment, the present invention can be further configured such that the detection switch is located between the first bushing and the second bushing.

[0015] In a preferred embodiment, the present invention can be further configured as follows: a fixing block is provided at the upper end of the first bushing and fixedly connected to the first fixing plate; a speed reducer is fixedly connected at the upper end of the fixing block; a servo motor is fixedly connected at the upper end of the speed reducer; the output end of the servo motor is fixedly connected to the input end of the speed reducer; a coupling is fixedly connected at the output end of the speed reducer; and the coupling is fixedly connected to the upper end of the first connecting sleeve.

[0016] In a preferred embodiment, the present invention can be further configured such that the two grippers are symmetrically arranged about a plane, and the axis of the sleeve coincides with the plane of symmetry of the two grippers.

[0017] In a preferred embodiment, the present invention may be further configured as follows: it also includes a fixed bracket, on which a horizontal moving module is fixedly installed, and a vertical moving module is fixedly installed at the moving end of the horizontal moving module, and a first fixed plate on the elastic telescopic tightening shaft is fixedly installed at the moving end of the vertical moving module.

[0018] The explanations of the nouns, conjunctions, or adjectives used in the above technical solutions are as follows:

[0019] A fixed connection refers to a connection in which parts or components are fixed in place, with no relative movement between them. These connections are divided into two types: detachable and non-detachable.

[0020] (1) Detachable connections use screws, splines, wedges, etc. to fix parts together. This type of connection can be disassembled during maintenance without damaging the parts. However, the specifications of the connecting parts used must be correct (such as the length of bolts, keys, wedges) and properly tightened.

[0021] (2) Non-removable connections mainly refer to welding, riveting, and tenon joints. Since disassembly is required by forging, sawing, or oxy-acetylene cutting during repair or replacement, the parts generally cannot be reused. At the same time, attention should be paid to the process quality, technical inspection, and remedial measures (such as correction, polishing, etc.) when making connections.

[0022] A threaded connection is a detachable connection in which threaded parts (or the threaded portion of the connected parts) are joined together as one unit.

[0023] A sliding connection refers to two objects that are in contact but not fixed, and can slide relative to each other.

[0024] A rotating connection is a connection between parts that allows the parts to rotate relative to each other.

[0025] The beneficial effects of this utility model are:

[0026] 1. This application can achieve elastic compression of the tightening shaft to complete the positioning and identification function;

[0027] 2. This application overcomes the difficulty of ordinary tightening shafts in picking up materials, reduces manual intervention in the feeding process, and realizes the material picking, transfer and tightening process with the movement of the tightening shaft; it avoids the difficulty of blown nail transportation for bolts with a length-to-diameter ratio by the nail feeder, reduces the impact of the nail feeder's spatial position on the equipment, and makes the feeding more flexible, reduces the feeding time and saves costs. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0030] Figure 2 This is a schematic diagram of the installation structure of the elastic telescopic tightening shaft and the material picking assembly according to an embodiment of the present utility model;

[0031] Figure 3 This is a schematic diagram of the elastic telescopic tightening shaft structure according to an embodiment of the present invention;

[0032] Figure 4 This is a partial structural diagram of the first connecting sleeve in an embodiment of the present utility model;

[0033] Figure 5 This is a partial structural diagram of the second connecting sleeve in an embodiment of the present utility model;

[0034] Figure 6 This is a schematic diagram of the material handling component structure according to an embodiment of the present invention. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0036] In the description of this utility model, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around" and other terms indicating orientation or positional relationship are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0037] Based on the concept of this application, combined with Figures 1 to 6 This document describes an embodiment of an automatically feedable, retractable tightening shaft. Specifically, the automatically feedable, retractable tightening shaft is constructed as a split structure, comprising components such as an elastically retractable tightening shaft 100 and a feed assembly 200. Through the cooperation of the first bushing 102, the second bushing 103, the first connecting sleeve 104, and the second connecting sleeve 105, the elastic telescopic tightening shaft 100 moves downward as a whole, causing the bolt located directly below the sleeve 110 to be inserted into the sleeve 110. When the bolt is inserted into the sleeve 110, the sleeve 110, the sleeve extension rod 109, the sleeve transition head 107, and the second connecting sleeve 105 no longer move downward. However, the first fixing plate 101 will still drive the first bushing 102 and the second bushing 103 to move downward. The first bushing 102 will drive the first connecting sleeve 104 to continue to move downward. At this time, the second connecting sleeve 105 slides and compresses the spring 106 in the first connecting sleeve 104. At the same time, the sleeve extension rod 109 slides in the second bushing 103. Then, the finger cylinder 202 drives the two grippers 203 to move closer to each other and clamp the bolt. When it is necessary to tighten the bolt, the elastic telescopic tightening shaft 100 moves down as a whole, so that the bolt is aligned with the bolt mounting hole. The finger cylinder 202 drives the two grippers 203 to move away from each other, releasing the bolt. At this time, the bolt is pressed into the bolt mounting hole by the elastic force of the spring 106. Then, the drive source drives the first connecting sleeve 104 to rotate. The first connecting sleeve 104 drives the second connecting sleeve 105 to rotate. The second connecting sleeve 105 drives the sleeve transition head 107 to rotate. The sleeve transition head 107 drives the sleeve extension rod 109 to rotate. The sleeve extension rod 109 drives the sleeve 110 to rotate to complete the tightening work.

[0038] like Figures 1 to 6 As shown, an elastic, retractable tightening shaft capable of automatically picking up materials includes:

[0039] The elastic telescopic tightening shaft 100 has a material handling component 200 fixedly installed at its lower end.

[0040] The elastic telescopic tightening shaft 100 includes a first fixed plate 101 arranged vertically. A first bushing 102 and a second bushing 103 are sequentially fixedly connected to one side of the first fixed plate 101 from top to bottom. A first connecting sleeve 104 is rotatably connected to the inner side of the first bushing 102. The upper end of the first connecting sleeve 104 is closed, and the lower end is open. A second connecting sleeve 105 is slidably connected vertically to the inner side of the first connecting sleeve 104. The upper end of the second connecting sleeve 105 is open, and the lower end is closed. A spring 106 is vertically arranged on the inner side of the second connecting sleeve 105. A sleeve transition head 107 is fixedly connected to the lower end of the second connecting sleeve 105. A pressure sleeve 108 is slidably connected on the sleeve transition head 107. The pressure sleeve 108 is fixedly connected to the lower end of the first connecting sleeve 104. A sleeve extension rod 109 is fixedly connected to the lower end of the sleeve transition head 107. The sleeve extension rod 109 is slidably connected inside the second bushing 103. A sleeve 110 is fixedly connected to the lower end of the sleeve extension rod 109.

[0041] The material handling assembly 2 includes a second fixing plate 201 fixedly connected to the side wall of the second bushing. A finger cylinder 202 is fixedly connected to the lower end of the second fixing plate 201, and grippers 203 are fixedly connected to the two moving ends of the finger cylinder 202.

[0042] In use, the elastic telescopic tightening shaft 100 moves downward as a whole, causing the bolt located directly below the sleeve 110 to be inserted into the sleeve 110. When the bolt is inserted into the sleeve 110, the sleeve 110, the sleeve extension rod 109, the sleeve transition head 107, and the second connecting sleeve 105 no longer move downward. However, the first fixing plate 101 will still drive the first bushing 102 and the second bushing 103 to move downward. The first bushing 102 will drive the first connecting sleeve 104 to continue to move downward. At this time, the second connecting sleeve 105 slides and compresses the spring 106 in the first connecting sleeve 104. At the same time, the sleeve extension rod 109 slides in the second bushing 103. Then, the finger cylinder 202 drives the two grippers 203 to move closer to each other and clamp the bolt. When it is necessary to tighten the bolt, the elastic telescopic tightening shaft 100 moves down as a whole, so that the bolt is aligned with the bolt mounting hole. The finger cylinder 202 drives the two grippers 203 to move away from each other, releasing the bolt. At this time, the bolt is pressed into the bolt mounting hole by the elastic force of the spring 106. Then, the drive source drives the first connecting sleeve 104 to rotate. The first connecting sleeve 104 drives the second connecting sleeve 105 to rotate. The second connecting sleeve 105 drives the sleeve transition head 107 to rotate. The sleeve transition head 107 drives the sleeve extension rod 109 to rotate. The sleeve extension rod 109 drives the sleeve 110 to rotate to complete the tightening work.

[0043] In one embodiment of this utility model, the inner wall of the first connecting sleeve 104 is provided with a plurality of vertical grooves 111, and the outer wall of the second connecting sleeve 105 is fixedly connected with a plurality of sliders 112 along the vertical direction. The sliders 112 are slidably connected in the grooves 111. This design allows the second connecting sleeve 105 to slide vertically along the first connecting sleeve 104 and also rotate with the first connecting sleeve 104.

[0044] In one embodiment of this utility model, a support plate 113 is fixedly connected to the side wall of the first bushing 102, a detection switch 114 is fixedly connected to the support plate 113, and a fixing ring 115 is fixedly connected to the upper end of the sleeve extension rod 109. When the sleeve 110, sleeve extension rod 109, sleeve transition head 107, and second connecting sleeve 105 are no longer moving downwards, but the first fixing plate 101 continues to drive the first bushing 102 and the second bushing 103 to move downwards, the fixing ring 115 will approach the detection switch 114 and be detected. At this time, a signal is transmitted, causing the finger cylinder 202 to drive the two grippers 203 to move closer to each other, clamp the bolt, and complete the material picking.

[0045] The detection switch 114 in this application is a flush proximity switch, which is a sensor that detects the approach or departure of an object. It can convert the position information of the object into an electrical signal for processing by a computer or other control device. The working principle of proximity switches is mainly based on effects such as magnetic field, capacitance, and optics, and can be divided into various types such as magnetic induction, inductive, capacitive, and optical types according to different working principles.

[0046] Proximity switches commonly operate in two forms: flush-mount and non-flush-mount. A "flush-mount" switch means that when an object approaches the switch's contact surface, the output signal immediately changes from high to low; when the object moves away, the output signal immediately changes from low to high, resulting in a stable signal without jitter. A non-flush-mount proximity switch, on the other hand, only changes its output signal when an object approaches within a certain distance; the signal remains unchanged when the object moves away. This requires specific signal processing circuitry to maintain the output signal.

[0047] Flush proximity switches are ideal for applications requiring brief detection signals. These switches can detect fluctuations that occur during operation, reducing the likelihood of false detections. Flush proximity switches are commonly used in position detection, counting, and speed measurement. Conversely, non-flush proximity switches are suitable for applications requiring sustained detection signals. Because they have a certain storage capacity, they can be used to detect dynamic loads or fill in missing position detection signals.

[0048] In one embodiment of this invention, the detection switch 114 is located between the first bushing 102 and the second bushing 103. This arrangement facilitates the detection of the approach of the retaining ring 115.

[0049] In one embodiment of this utility model, a fixing block 116 is fixedly connected to the upper end of the first bushing 102 and fixedly connected to the first fixing plate 101. A reducer 117 is fixedly connected to the upper end of the fixing block 116, and a servo motor 118 is fixedly connected to the upper end of the reducer 117. The output end of the servo motor 118 is fixedly connected to the input end of the reducer 117, and a coupling 119 is fixedly connected to the output end of the reducer 117. The coupling 119 is fixedly connected to the upper end of the first connecting sleeve 104. The servo motor 118 serves as a drive source, driving the output end of the reducer 117 to rotate at a low speed, thereby completing the tightening operation.

[0050] In one embodiment of this utility model, the two grippers 203 are symmetrically arranged about a plane, and the axis of the sleeve 110 coincides with the plane of symmetry of the two grippers 203. This design ensures that the bolt will not be deflected when the two grippers 203 clamp it.

[0051] In one embodiment of this utility model, a fixed bracket 300 is further included. A horizontal moving module 400 is fixedly mounted on the fixed bracket 300, and a vertical moving module 500 is fixedly mounted on the moving end of the horizontal moving module 400. A first fixed plate 101 on the elastic telescopic tightening shaft 100 is fixedly mounted on the moving end of the vertical moving module 500. This structure is fixed to the top of the equipment by the fixed bracket 300. The horizontal moving module 400 and the vertical moving module 500 carry the elastic telescopic tightening shaft 100 to move. First, they move to the bolt placement area to pick up the bolts. Then, the bolts move with the horizontal moving module 400 and the vertical moving module 500 to the corresponding bolt mounting holes to complete the tightening work. The above picking, transferring, and tightening actions are repeated according to different bolt mounting positions to complete the tightening of all bolts for the corresponding product.

[0052] In this application, the horizontal moving module 400 and the vertical moving module 500 use the same set of modules, including cylinders and moving ends that move along the length of the cylinders. For example, the cylinders on the horizontal moving module 400 are fixed to the bottom of the fixed bracket 300, and the cylinders on the vertical moving module 500 are fixed to the moving ends of the cylinders on the horizontal moving module 400. The first fixed plate 101 on the elastic telescopic tightening shaft 100 is fixed to the moving ends of the cylinders on the vertical moving module 500.

[0053] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0054] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims of this utility model.

Claims

1. A flexible, retractable tightening shaft capable of automatically picking up materials, characterized in that, include: An elastic telescopic tightening shaft (100) is provided, and a material handling assembly (200) is fixedly installed at the lower end of the elastic telescopic tightening shaft (100). The elastic telescopic tightening shaft (100) includes a first fixed plate (101) arranged vertically. A first bushing (102) and a second bushing (103) are sequentially fixedly connected to one side of the first fixed plate (101) from top to bottom. A first connecting sleeve (104) is rotatably connected to the inner side of the first bushing (102). The upper end of the first connecting sleeve (104) is closed, and the lower end is open. A second connecting sleeve (105) is slidably connected vertically to the inner side of the first connecting sleeve (104). The upper end of the second connecting sleeve (105) is open, and the lower end is closed. A spring (106) is vertically arranged on the inner side of the second connecting sleeve (105). A sleeve transition head (107) is fixedly connected to the lower end of the second connecting sleeve (105). A pressure sleeve (108) is slidably connected on the sleeve transition head (107). The pressure sleeve (108) is fixedly connected to the lower end of the first connecting sleeve (104). A sleeve extension rod (109) is fixedly connected to the lower end of the sleeve transition head (107). The sleeve extension rod (109) is slidably connected inside the second bushing (103). A sleeve (110) is fixedly connected to the lower end of the sleeve extension rod (109). The material handling assembly (2) includes a second fixing plate (201) fixedly connected to the side wall of the second bushing. A finger cylinder (202) is fixedly connected to the lower end of the second fixing plate (201). Both moving ends of the finger cylinder (202) are fixedly connected to grippers (203).

2. The elastic, retractable tightening shaft with automatic material handling capability according to claim 1, characterized in that, The inner wall of the first connecting sleeve (104) is provided with a plurality of vertical grooves (111), and the outer wall of the second connecting sleeve (105) is fixedly connected with a plurality of sliders (112) along the vertical direction. The sliders (112) are slidably connected in the grooves (111).

3. The elastic, retractable tightening shaft with automatic material handling capability according to claim 2, characterized in that, A support plate (113) is fixedly connected to the side wall of the first bushing (102), a detection switch (114) is fixedly connected to the support plate (113), and a fixing ring (115) is fixedly connected to the upper end of the sleeve extension rod (109).

4. The elastic, retractable tightening shaft with automatic material handling capability according to claim 3, characterized in that, The detection switch (114) is located between the first bushing (102) and the second bushing (103).

5. The elastic, retractable tightening shaft with automatic material handling capability according to claim 4, characterized in that, The upper end of the first bushing (102) is provided with a fixing block (116) that is fixedly connected to the first fixing plate (101). The upper end of the fixing block (116) is fixedly connected to a speed reducer (117). The upper end of the speed reducer (117) is fixedly connected to a servo motor (118). The output end of the servo motor (118) is fixedly connected to the input end of the speed reducer (117). The output end of the speed reducer (117) is fixedly connected to a coupling (119). The coupling (119) is fixedly connected to the upper end of the first connecting sleeve (104).

6. The elastically retractable tightening shaft with automatic material handling capability according to claim 5, characterized in that, The two grippers (203) are symmetrically arranged about a plane, and the axis of the sleeve (110) coincides with the plane of symmetry of the two grippers (203).

7. The elastically extendable tightening shaft with automatic material handling capability according to claim 1, characterized in that, It also includes a fixed bracket (300), on which a horizontal moving module (400) is fixedly installed. A vertical moving module (500) is fixedly installed on the moving end of the horizontal moving module (400). The first fixed plate (101) on the elastic telescopic tightening shaft (100) is fixedly installed on the moving end of the vertical moving module (500).

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