TWI441724B - Assembly device - Google Patents

Description

Assembly tool

The present invention relates to an assembly tool, and more particularly to an assembly tool for assembly using a thimble assembly.

When the hollow rubber plug is inserted into the threaded hole, the ejector pin is inserted into the hollow rubber plug to take the material, and then the ejector is moved and positioned by the robot, and the thimble is driven to assemble. However, when the thimble is retracted by the robot, the hollow rubber plug is easily taken out from the threaded hole, so that the hollow rubber plug remains on the thimble, which affects the next assembly. In addition, the ejector pin feed assembly and retraction system have been completed, and its assembly efficiency is not high, which can not meet the needs of high-speed assembly.

In view of the above, it is necessary to provide an assembly tool with high assembly efficiency.

An assembly tool comprising a spline sleeve, a first connecting member and a second connecting member respectively connected to the two ends of the spline sleeve, a sliding member disposed in the spline sleeve, and being engageable with the sliding member and a rotating member rotatable relative to the sliding member, a first elastic member elastically resisting between the first connecting member and the rotating member, a second elastic member elastically resisting between the second connecting member and the sliding member, and being fixed to the sliding member a thimble assembly that is slidable relative to the second connector. The spline sleeve defines a center hole, and the hole wall of the center hole is provided with N (N is an integer and equal to or greater than 1) axially extending first chute and N axially extending second chute, in the circumference The first chute and the second chute are equally spaced in the circumferential direction. The sliding member includes a first key portion slidably disposed in the first sliding slot, the rotating member includes N second key portions arranged at equal intervals in the circumferential direction, the second key portion being slidably disposed The first sliding groove is disposed in the first sliding slot and is adjacent to the second sliding slot stop. The rotating member is formed with 2N first tooth portions uniformly distributed in the circumferential direction adjacent to the end surface of the sliding member, and the corresponding end surface of the sliding member is formed 2N second tooth portions correspondingly engaged with the first tooth portion, when the second key portion is slidably disposed on the first sliding groove, the first tooth portion and the second tooth portion have a phase difference in the circumferential direction, so that The rotating member has a tendency to rotate relative to the slider.

The rotating member of the assembly tool is rotatable relative to the sliding member, and is slidable from the first sliding slot to the second sliding slot and positioned with the second sliding slot stop, while the first tooth portion and the second tooth portion are engaged. The change, the feeding and retracting actions of the thimble assembly are completed at the same time, and the assembly efficiency is high. Moreover, the above assembly tool adopts a pure mechanism design, and has a fast reaction speed, and is suitable for a high-speed working environment.

100‧‧‧Assembling tools

11‧‧‧ splined sleeve

12‧‧‧First connector

13‧‧‧Second connector

14‧‧‧Sliding parts

15‧‧‧Rotating parts

16‧‧‧First elastic parts

17‧‧‧Second elastic parts

18‧‧‧ thimble assembly

19‧‧‧ Protective cover

112‧‧‧ first end

113‧‧‧ second end

1121, 1211, 1131, 1412‧‧‧ mounting holes

114, 1411, 1511‧‧‧ center hole

115‧‧‧ hole wall

1141‧‧‧First chute

1142‧‧‧Second chute

1143‧‧‧Sloping guide surface

142‧‧‧First key department

143‧‧‧First tooth

1431‧‧‧First tooth surface

1432‧‧‧second tooth surface

152‧‧‧Second key department

1521‧‧‧Sloping surface

153‧‧‧second tooth

181‧‧‧ Connecting rod

182‧‧‧ thimble

1 is a perspective assembled view of an assembly tool according to an embodiment of the present invention.

Figure 2 is an exploded perspective view of the assembly tool of Figure 1.

Figure 3 is an exploded perspective view of the assembly tool of Figure 1 taken along another perspective.

Figure 4 is a cross-sectional view taken along line IV-IV of Figure 1.

Figure 5 is a cross-sectional view of the spline sleeve of the assembly tool of Figure 1.

Figure 6 is a partial exploded view of the assembly tool of Figure 1 in the circumferential direction and showing the initial state of the assembly tool.

Referring to FIG. 1 to FIG. 3, the assembly tool 100 of the embodiment of the present invention can be used for hollowing The rubber plug is inserted into the automated assembly of the threaded hole. The assembly tool 100 includes a spline sleeve 11, a first connecting member 12 and a second connecting member 13 respectively connected to the two ends of the spline sleeve 11, a sliding member 14 disposed in the spline sleeve 11, and a sliding member a rotating member 15 that is engaged and rotated relative to the sliding member 14 , a first elastic member 16 elastically resisting between the first connecting member 12 and the rotating member 15 , and elastically resisting the second connecting member 13 and the sliding member 14 The second elastic member 17 , the thimble assembly 18 fixedly connected to the sliding member 14 and slidable relative to the second connecting member 13 , and the protective sleeve 19 fixedly connected to the second connecting member 13 and sleeved on the thimble assembly 18 . The end of the thimble assembly 18 can be sleeved with a hollow rubber plug. The first connecting member 12 can be connected to a robot. The robot moves and positions the thimble assembly 18 to insert the hollow rubber plug sleeved at the end of the thimble assembly 18 into the threaded hole. in.

4 and 5, the spline sleeve 11 includes a first end 112 and a second end 113 opposite the first end 112. The first end 112 is coupled to the first connector 12 and the second end 113 is coupled to the second connector 13. The first end of the first end 112 is provided with an axially extending mounting hole 1121. The first connecting member 12 defines a mounting hole 1211 corresponding to the mounting hole 1121. The first screw member (not shown) is provided with the mounting hole 1121. The first connector 12 is fixedly coupled to the spline sleeve 11 by 1211. The circumferential surface of the second end 113 is provided with a radially extending mounting hole 1131. The second screw member (not shown) is disposed through the mounting hole 1131 and abuts against the outer circumferential surface of the second connecting member 13, thereby The two connecting members 13 are held by the spline sleeve 11.

The spline sleeve 11 defines a central opening 114. A first sliding slot 1141 extending in three axial directions and a second sliding slot 1142 extending in three axial directions are defined in the hole wall 115 of the central hole 114. In the circumferential direction, the first chute 1141 and the second chute 1142 are alternately arranged at intervals, that is, the center angles of the adjacent two first chutes 1141 and the adjacent two second chutes 1142 are both 120 degrees, each The first sliding slot 1141 is disposed between the adjacent two second sliding slots 1142, and adjacent thereto The central angle corresponding to the first chute 1141 and the second chute 1142 is 60 degrees. In this embodiment, the depth of the first sliding slot 1141 is greater than the radial depth of the second sliding slot 1142, and the width of the first sliding slot 1141 is substantially the same as the width of the second sliding slot 1142.

The spline sleeve 11 further includes an inclined guiding surface 1143 correspondingly connected to the first sliding slot 1141 and the second sliding slot 1142. The inclined guide surface 1143 extends in the circumferential direction and is inclined toward the second end 113.

The slider 14 is substantially cylindrical, and defines a central hole 1411 extending in the axial direction and a mounting hole 1412 extending in the radial direction for receiving and fixing the thimble assembly 18, respectively. The outer circumferential surface of the slider 14 is formed with six first key portions 142 extending in the axial direction. The width of the first key portion 142 and the length in the radial direction are matched with the first sliding slot 1141 and the second sliding slot 1142, so that the first key portion 142 can be inside the first sliding slot 1141 and the second sliding slot 1142. Axial sliding. The first end portion 143 is formed on the end surface of the slider 14 that engages with the rotating member 15. The six first tooth portions 143 are evenly distributed in the circumferential direction. Each of the first tooth portions 143 includes a first tooth surface 1431 and a second tooth surface 1432 that are obliquely disposed and connected, and the first tooth surface 1431 and the second tooth surface 1432 intersect the rotation axis of the slider 14 at one point.

The rotating member 15 is substantially cylindrical and defines an axial hole 1511 extending therethrough. The outer circumferential surface of the rotating member 15 is formed with three second key portions 152 extending in the axial direction. The width of the second key portion 152 is matched with the second sliding slot 1142, and the length of the second key portion 152 in the radial direction is greater than the depth of the second sliding slot 1142 and smaller than the depth of the first sliding slot 1141, so that the second key The portion 152 is axially slidable within the first chute 1141 and positioned with the top stop of the second chute 1142. The second key portion 152 is provided with an inclined surface 1521 adjacent to the end surface of the slider 14 for cooperating with the inclined guiding surface 1143 of the spline sleeve 11.

An end surface of the rotating member 15 that engages with the sliding member 14 is formed to correspond to the first tooth portion 143 The six second tooth portions 153 are engaged. The second tooth portion 153 has the same structure as the first tooth portion 143.

In the present embodiment, the first elastic member 16 and the second elastic member 17 are both cylindrical spiral springs and are disposed in the axial direction, and the elastic modulus of the first elastic member 16 is greater than the elastic modulus of the second elastic member 17.

The thimble assembly 18 includes a connecting rod 181 and a thimble 182 fixedly disposed at an end of the connecting rod 181. The connecting rod 181 sequentially passes through the second connecting member 13, the second elastic member 17, the central hole 1411 of the sliding member 14, the central hole 1511 of the rotating member 15, and the first elastic member 16, and is fixedly coupled to the sliding member 14. The thimble 182 is provided with a protective sleeve 19, and the exposed end portion can be sleeved with a hollow rubber plug.

The working process of the assembly tool 100 is described below.

Figure 6 is a partial exploded view of the assembly tool 100 in the circumferential direction showing the initial state of the assembly tool 100. In the initial state, the first key portion 142 of the slider 14 and the second key portion 152 of the rotating member 15 are slidably disposed in the first sliding slot 1141, and the first tooth portion 143 and the second tooth portion 153 are circumferentially The direction has a phase difference. The phase difference is greater than 2 degrees and less than 10 degrees. Preferably, the phase difference is about 5 degrees. Since the elastic modulus of the first elastic member 16 is greater than the elastic modulus of the second elastic member 17, the axial force F1 provided by the first elastic member 16 is greater than the axial force F2 provided by the second elastic member 17, and the sliding member 14 can be rotated. The member 15 slides axially toward the second connecting member 13 to extend the ejector pin 182 and insert it into the hollow rubber plug for take-up. During the reclaiming process, the second elastic member 17 can also serve as a buffering function to avoid damage to the thimble 182 due to excessive force during reclaiming.

After the reclaiming is completed, the assembly tool 100 is moved by the robot and positioned to a preset position, so that the ejector pin 182 of the hollow rubber plug is aligned with the threaded hole. Then, the robot drives the assembly tool 100 to insert the hollow rubber plug on the thimble 182 into the threaded hole. Will be empty During the process of inserting the rubber plug into the threaded hole, the thimble 182 will be subjected to a large resistance. Under the combination of the resistance and the first elastic member 16 and the second elastic member 17, the ejector pin 182, the slider 14 and the rotating member 15 Slide in the axial direction away from the second connecting member 13 until it is retracted to the retracted state.

Since the first tooth portion 143 and the second tooth portion 153 have a phase difference in the circumferential direction, when the rotating member 15 is about to slide out from the first sliding slot 1141, the rotating member 15 is pushed down the top of the sliding member 14 in the circumferential direction. The movement of the inclined guide surface 1143 and the inclined surface 1521 causes the rotating member 15 to slide to the top of the second sliding slot 1142 and resist the positioning with the second sliding slot 1142. At this time, the rotating member 15 is rotated 30 degrees about its axis, and is abutted against the spline sleeve 11 under the abutment of the first elastic member 16. At the same time, under the action of the second elastic member 17 and the external top thrust acting on the ejector pin 182, the slider 14 slides in the axial direction, and after the rotation of 30 degrees, the first tooth portion 143 and the rotating member 15 of the slider 14 are rotated. The second tooth portion 153 is engageably engaged, so that the slider 14 drives the ejector pin 182 back a certain distance.

In the above process, during the process of assembling the hollow rubber plug with the threaded hole by the thimble assembly 18, the ejector pin 182 can be automatically retracted, thereby facilitating the next assembly action. By using the assembly tool of the invention, the above-mentioned reclaiming, aligning and feeding assembly processes are repeated, and the cycle operation can be realized, and each assembly cycle is short and has high efficiency.

It can be understood that the first key portion 142 of the sliding member 14 of the assembly tool 100 of the present invention is not limited to six, and the number thereof may be one, two, etc., so that the sliding member 14 can be slidably connected with the spline sleeve 11. The second key portion 152 of the rotating member 15 is not limited to three, and the number of the first tooth portion 143 and the second tooth portion 153 is not limited to six, and the number of the first tooth portion 143 and the second tooth portion 153 is satisfied. The double key portion 152 can be doubled. The assembly tool 100 of the present invention is also not limited to being used in an automated assembly operation for inserting a hollow rubber plug into a threaded hole. It can also be used in other assembly operations where the workpiece is inserted into the housing.

In summary, the present invention complies with the requirements of the invention patent and submits a patent application according to law. The above description is only the preferred embodiment of the present invention, and equivalent modifications or variations made by those skilled in the art will be included in the following claims.

11‧‧‧ splined sleeve

12‧‧‧First connector

13‧‧‧Second connector

14‧‧‧Sliding parts

15‧‧‧Rotating parts

16‧‧‧First elastic parts

17‧‧‧Second elastic parts

18‧‧‧ thimble assembly

19‧‧‧ Protective cover

1121, 1211, 1131, 1412‧‧‧ mounting holes

1411, 1511‧‧‧ center hole

142‧‧‧First key department

143‧‧‧First tooth

1431‧‧‧First tooth surface

1432‧‧‧second tooth surface

152‧‧‧Second key department

1521‧‧‧Sloping surface

153‧‧‧second tooth

181‧‧‧ Connecting rod

182‧‧‧ thimble

Claims (11)

An assembly tool comprising a spline sleeve, a first connecting member and a second connecting member respectively connected to the two ends of the spline sleeve; a sliding member disposed in the spline sleeve, engageable with the sliding member a rotating member positioned and rotatable relative to the sliding member, a first elastic member elastically resisting between the first connecting member and the rotating member, and a second elastically resisting between the second connecting member and the sliding member The elastic member, and the ejector pin fixedly connected with the sliding member and slidable relative to the second connecting member, is improved in that the spline sleeve defines a central hole, and the central wall of the central hole is provided with N axial extensions The first chute and the N axially extending second chutes, wherein N is an integer and greater than or equal to 1, the first chute and the second chute are alternately staggered in a circumferential direction, and the sliding member includes a sliding a first key portion disposed in the first sliding slot, the rotating member includes N second key portions arranged at equal intervals in a circular direction, the second key portion being slidably disposed in the first sliding slot And can be positioned with the second chute stop, the rotating member is formed with 2N adjacent to the end surface of the sliding member a first tooth portion uniformly distributed in the circumferential direction, the corresponding end surface of the sliding member is formed with 2N second tooth portions correspondingly engaged with the first tooth portion, and the second key portion is slidably disposed on the first sliding portion In the groove, the first tooth portion and the second tooth portion have a phase difference in the circumferential direction, so that the rotating member has a tendency to rotate relative to the sliding member. The assembly tool of claim 1, wherein the spline sleeve includes an inclined guiding surface correspondingly connected to the first sliding slot and the second sliding slot, and the inclined guiding guide is rotated when the rotating member rotates The lead surface slides to the first groove or the second groove. The assembly tool of claim 2, wherein the second key portion is provided with an inclined surface matching the inclined guiding surface adjacent to an end surface of the sliding member. The assembly tool of claim 1, wherein the first elastic member and the second elastic member are cylindrical spiral springs and disposed axially, and the first elastic member has a modulus of elasticity greater than The spring constant of the second elastic member. The assembly tool of claim 1, wherein each of the first tooth portions includes a first tooth surface and a second tooth surface that are obliquely disposed and connected, and the first tooth surface and the second tooth surface It intersects the axis of rotation of the rotating member at a point. The assembly tool of claim 1, wherein the first chute has a depth in the radial direction that is greater than a depth in the radial direction of the second chute. The assembly tool of claim 1, wherein the length of the second key portion in the radial direction is greater than the length of the first key portion in the radial direction. The assembly tool of claim 1, wherein the assembly tool further comprises a protective sleeve fixedly connected to the second connecting member and sleeved on the thimble, and a connecting rod fixedly disposed at one end of the connecting rod, The other end of the connecting rod sequentially passes through the second connecting member, the second elastic member, the sliding member and the rotating member, and is fixedly connected with the sliding member. The assembly tool of claim 1, wherein one end of the spline sleeve connected to the first connecting member is provided with an axially extending first mounting hole, the spline sleeve and the second connection One of the connecting ends is provided with a second mounting hole extending radially. The assembly tool of claim 1, wherein when the second key portion is slidably disposed on the first sliding slot, the phase difference between the first tooth portion and the second tooth portion in the circumferential direction is greater than 2 degrees is less than 10 degrees. The assembly tool of claim 10, wherein when the second key portion is slidably disposed on the first sliding slot, the phase difference between the first tooth portion and the second tooth portion in the circumferential direction is 5 degree.