Automatic lifting and centering mechanism for heat shrink tubing positioning

Abstract

The invention discloses an automatic lifting and centering mechanism for positioning a heat shrink tube, comprising a mounting frame; a lifting and centering mechanism connected to the mounting frame, comprising a 180-degree opening and closing finger cylinder, a lifting plate, a first guide column, a second guide column, a first lever and a second lever; a symmetrical first guide groove and a second guide groove are provided on the lifting plate, both comprising an arc segment and a straight segment; the first guide column and the second guide column are respectively connected to the first clamp and the second clamp of the 180-degree opening and closing finger cylinder, and are located in the corresponding first guide groove or the second guide groove and connected to the lifting plate; the first lever and the second lever are respectively connected to the first clamp and the second clamp of the 180-degree opening and closing finger cylinder; a fork mechanism, comprising a first fork and a second fork, both of which are contact-connected to the corresponding first lever and the second lever. The invention can automatically complete the positioning action of the heat shrink tube, ensure the positioning accuracy of the heat shrink tube, improve the heat shrinking quality, and improve the product quality and production efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of wire harness processing jigs, and in particular relates to an automatic lifting and centering mechanism for positioning a heat shrink tube. Background Art

[0002] In the wire harness processing industry, heat shrink tube heating machines are used for heat shrink processing of many wire harnesses. Before operation, the heat shrink tube heating machine must first position the heat shrink tube on the wire harness to the appropriate position. This operation is currently basically completed manually, which takes up a considerable amount of operation time, and the accuracy of manual positioning of the heat shrink tube is often difficult to guarantee. In order to change the manual positioning method of heat shrink tubes, ensure the accuracy of heat shrink tube positioning, improve heat shrink quality, liberate part of the labor force, and improve production efficiency, an automatic positioning device for heat shrink tubes is needed. Summary of the invention

[0003] In response to the above problems, the present invention proposes an automatic lifting and centering mechanism for positioning heat shrink tubes. The mechanism has a clever design and a compact and reasonable structure. It can automatically complete the positioning of the heat shrink tubes, ensure the accuracy of the positioning of the heat shrink tubes, improve the quality of heat shrinkage, liberate part of the labor force, and improve product quality and production efficiency.

[0004] In order to achieve the above technical objectives and the above technical effects, the present invention is implemented through the following technical solutions:

[0005] An automatic lifting and centering mechanism for positioning a heat shrink tube, comprising:

[0006] Mounting frame;

[0007] The lifting and centering mechanism comprises a 180-degree opening and closing finger cylinder, a lifting plate, a first guide column, a second guide column, a first lever and a second lever; the 180-degree opening and closing finger cylinder is connected to the mounting frame; the lifting plate is provided with a symmetrical first guide groove and a second guide groove, and both guide grooves include a connected arc segment and a straight line segment; the first guide column and the second guide column are respectively connected to the first clamping jaw and the second clamping jaw of the 180-degree opening and closing finger cylinder, and are located in the corresponding first guide groove or the second guide groove and connected to the lifting plate; the first lever and the second lever are respectively connected to the first clamping jaw and the second clamping jaw of the 180-degree opening and closing finger cylinder;

[0008] The shift fork mechanism is connected to the lifting plate and comprises a first shift fork and a second shift fork which are arranged opposite to each other. The first shift fork and the second shift fork are respectively connected to the corresponding first shift rod and the second shift rod in a contacting manner.

[0009] Optionally, the electrode unit includes an electrode cylinder, an insulating block, and two electrodes arranged opposite to each other, the electrode cylinder is fixedly connected to one side of the mounting frame, one end of the insulating block is connected to the electrode cylinder, and the other end is respectively connected to the two electrodes.

[0010] Optionally, the two electrodes are electrically connected to the first controller, and each electrode touches the exposed part of the cable to be heat shrunk, so that the electrode is turned on, triggering the first controller to control the electrode cylinder to pull the insulating block and the electrode to sink; the 180-degree opening and closing finger cylinder is electrically connected to the second controller. When the electrodes in the electrode unit are turned on, the electrode cylinder pulls the insulating block and the electrode to sink, and the 180-degree opening and closing finger cylinder is driven by the second controller, driving the first clamp and the second clamp to flip up and down.

[0011] Optionally, the two electrodes are both provided with waist-shaped holes, and are connected to the insulating block by screws through the waist-shaped holes, and the distance between the two electrodes is adjustable.

[0012] Optionally, the left-right symmetric center line of the 180-degree opening and closing finger cylinder coincides with the left-right symmetric center line of the electrode unit and the left-right symmetric center line of the lifting plate.

[0013] Optionally, when the first guide column and the second guide column are located in the straight section of the first guide groove and the second wire groove, the first clamp and the second clamp push the lifting plate to move up and down; when the first guide column and the second guide column are located in the arc section of the first guide groove and the second wire groove, the first clamp and the second clamp no longer push the lifting plate to move up and down, but push the first lever and the second lever to move the first fork and the second fork to make a reciprocating relative motion.

[0014] Optionally, the first fork and the second fork are elastically connected to the first fork base and the second fork base respectively, so that the fork is pressed down along with the height of the cable after touching the cable.

[0015] Optionally, the fork mechanism also includes a guide rail, a first guide rail slider, a second guide rail slider, a first fork base, a second fork base, a first guide rail limit block and a second guide rail limit block, the guide rail is fixedly arranged at the upper end of the lifting plate, the first guide rail slider and the second guide rail slider are relatively arranged on the guide rail, and can slide back and forth along the guide rail; the first fork base and the second fork base are respectively fixedly connected to the first guide rail slider and the second guide rail slider; the first fork and the second fork are respectively connected to the first fork base and the second fork base; the first guide rail limit block and the second guide rail limit block are respectively arranged at both ends of the guide rail; when the first clamping jaw and the second clamping jaw of the 180-degree opening and closing finger cylinder flip and drive the lifting plate to move up and down, after the first guide column and the second guide column enter the arc section of the guide groove, the lifting plate is pushed to the highest position, and the first shift rod and the second shift rod respectively shift the first fork and the second fork on the guide rail to make a reciprocating relative motion.

[0016] Optionally, the automatic lifting and centering mechanism for positioning the heat shrink tube further includes an up-and-down motion guiding mechanism, and the up-and-down motion guiding mechanism is disposed between the mounting frame and the lifting plate.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The automatic lifting and centering mechanism for positioning heat shrink tubes provided by the present invention has an ingenious design, a compact and reasonable structure, and can automatically complete the positioning action of the heat shrink tube, ensure the positioning accuracy of the heat shrink tube, improve the heat shrink quality, liberate part of the labor force, and improve product quality and production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to make the content of the present invention more clearly understood, the present invention is further described in detail below based on specific embodiments and in conjunction with the accompanying drawings, wherein:

[0020] Figure 1 It is an overall diagram of an automatic lifting and centering mechanism for positioning a heat shrink tube according to an embodiment of the present invention;

[0021] FIG2( a ) is a side view of an automatic lifting and centering mechanism for positioning a heat shrink tube according to an embodiment of the present invention;

[0022] FIG2( b ) is a front view of an automatic lifting and centering mechanism for positioning a heat shrink tube according to an embodiment of the present invention;

[0023] Figure 3 (a) is a front view of a mounting frame according to an embodiment of the present invention;

[0024] Figure 3 (b) is a side view of a mounting bracket according to an embodiment of the present invention;

[0025] Figure 4 is a structural diagram of a lifting plate according to an embodiment of the present invention;

[0026] Figure 5 is a cross-sectional view of a limit block according to an embodiment of the present invention;

[0027] The meanings of the reference numerals in the figure are as follows: 1-electrode cylinder; 2-mounting frame; 3-first shift fork; 4-first shift fork base; 5-first guide rail slider; 6-guide rail; 7-lifting plate; 8-first clamping jaw; 9-180 degree opening and closing finger cylinder; 10-insulating block; 11-electrode; 12-first guide column; 13-first shift rod; 14-first guide rail limit block; 15-limit block; 16-limit adjustment bolt; 17-guide bearing; 18-safety shield. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the scope of protection of the present invention.

[0029] In the description of the patent of the present invention, it should be noted that the terms "up", "down", "left", "right", "horizontal", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the patent of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the patent of the present invention.

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0031] The application principle of the present invention is described in detail below in conjunction with the accompanying drawings.

[0032] like Figure 1-5 As shown, the present invention provides an automatic lifting and centering mechanism for positioning a heat shrink tube, comprising:

[0033] Mounting frame 2;

[0034] The lifting and centering mechanism comprises a 180-degree opening and closing finger cylinder 9, a lifting plate 7, a first guide column 12, a second guide column, a first lever 13 and a second lever; the 180-degree opening and closing finger cylinder 9 is connected to the mounting frame 2; the lifting plate 7 is provided with a symmetrical first guide groove and a second guide groove, both of which include a connected arc segment and a straight line segment, preferably, the first guide groove and the second guide groove are provided at the lower end of the lifting plate 7, see Figure 4; The first guide column 12 and the second guide column are respectively connected to the first clamping jaw 8 and the second clamping jaw of the 180-degree opening and closing finger cylinder 9, and are located in the corresponding first guide groove or the second guide groove and connected to the lifting plate 7. Under the action of the first guide groove and the second guide groove, the first clamping jaw 8 and the second clamping jaw of the 180-degree opening and closing finger cylinder 9 are flipped so that the lifting plate 7 moves up and down against the mounting frame 2; the first lever 13 and the second lever are respectively connected to the first clamping jaw 8 and the second clamping jaw of the 180-degree opening and closing finger cylinder 9; specifically, when the first guide column 12 and the second guide column are located in the straight section of the first guide groove and the second wire groove, the first clamping jaw 8 and the second clamping jaw push the lifting plate 7 to move up and down; when the first guide column 12 and the second guide column are located in the arc section of the first guide groove and the second wire groove, the first clamping jaw 8 and the second clamping jaw no longer push the lifting plate 7 to move up and down, but push the first lever 13 and the second lever to shift the first fork 3 and the second fork to make a reciprocating relative movement; the first lever 13 and the second lever can be selected as a Y-type lever in actual use.

[0035] The fork mechanism is connected to the lifting plate 7, and includes a first fork 3 and a second fork that are arranged opposite to each other. The first fork 3 and the second fork are contact-connected with the corresponding first lever 13 and the second lever, respectively.

[0036] like Figure 1 As shown in Figures 2(a) and 2(b), in a specific embodiment of the present invention, the electrode unit includes an electrode cylinder 1, an insulating block 10, and two electrodes 11 arranged opposite to each other. The electrode cylinder 1 is fixedly connected to one side of the mounting frame 2; the insulating block 10 has a U-shaped cross-section, one end of which is connected to the electrode cylinder 1, and the other end is respectively connected to the two electrodes 11. The two electrodes 11 are both electrically connected to the first controller. When the processed cable with a heat shrink tube is placed in place, the exposed part of the cable that needs to be heat shrunk in the middle touches the two electrodes 11, so that the electrodes 11 are turned on, triggering the first controller to control the electrode cylinder 1 to pull the insulating block 10 and the electrode 11 to sink. In actual use, in order to facilitate the installation and adjustment of the distance between the two electrodes 11, the two electrodes 11 are provided with waist-shaped holes, which are connected to the insulating block 10 by screws through the waist-shaped holes.

[0037] like Figure 12(a) and 2(b), in a specific embodiment of the present invention, the fork mechanism further includes a guide rail 6 and a first guide rail slider 5, a second guide rail slider, a first fork base 4, a second fork base, a first guide rail limit block 14 and a second guide rail limit block, the guide rail 6 is fixedly arranged at the upper end of the lifting plate 7, the first guide rail slider 5 and the second guide rail slider are relatively arranged on the guide rail 6, and can slide back and forth along the guide rail 6; the first fork base 4 and the second fork base are respectively fixedly connected to the first guide rail slider 5 and the second guide The first fork 3 and the second fork are connected to the first fork base 4 and the second fork base respectively; the first guide rail limit block 14 and the second guide rail limit block are respectively arranged at the two ends of the guide rail 6; when the first clamp 8 and the second clamp of the 180-degree opening and closing finger cylinder 9 flip and drive the lifting plate 7 to move up and down, the lifting plate 7 is pushed to the highest position after the first guide column 12 and the second guide column enter the arc section of the guide groove, and the first lever 13 and the second lever respectively move the first fork 3 and the second fork on the guide rail 6 to make a reciprocating relative movement. The two Y-shaped forks of the lever ensure that the fork is completely held against and fixed by one fork at its left and right ends, and will not slide freely.

[0038] The left-right symmetric center line of the 180-degree opening and closing finger cylinder 9 coincides with the left-right symmetric center line of the electrode unit and the left-right symmetric center line of the lifting plate 7 .

[0039] The centers of the arc segments of the first guide groove and the second guide groove are respectively the rotation center points of the first clamping jaw 8 and the second clamping jaw of the 180-degree opening and closing finger cylinder 9 .

[0040] The 180-degree opening and closing finger cylinder 9 is electrically connected to the second controller. When the electrode 11 in the electrode unit is turned on, the electrode cylinder 1 pulls the insulating block 10 and the electrode 11 to sink, and the 180-degree opening and closing finger cylinder 9 is driven by the second controller to drive the first clamp 8 and the second clamp to flip up and down.

[0041] Furthermore, in one embodiment of the present invention, the automatic lifting and centering mechanism also includes a guide bearing 17, and a waist-shaped hole is also provided on the mounting frame 2. The lifting plate 7 is slidably connected to the mounting frame 2 by bolts passing through the waist-shaped hole on the mounting frame 2. The guide bearing 17 is arranged on the bolts that pass through the waist-shaped hole of the mounting frame 2 to connect the mounting frame 2 and the lifting plate 7, and slides up and down between the waist-shaped holes to play a guiding role when sliding between the mounting frame 2 and the lifting plate 7.

[0042] Furthermore, in one embodiment of the present invention, the first fork and the second fork are elastically connected to the first fork base and the second fork base, respectively, so that the fork is pressed down along with the height of the cable after touching the cable. Specifically, the first fork 3 is connected to the first fork base 4 via a rotating shaft, and an arc groove is provided on the first fork base 4. The positioning pin provided on the first fork 3 is embedded in the arc groove on the first fork base 4, and a torsion spring is provided between the first fork 3 and the first fork base 4, so that the first fork 3 can rotate relative to the first fork base 4 within the range of the length of the arc groove of the first fork base 4, ensuring that the first fork 3 can reliably move to the heat shrink tube during operation and accurately and effectively position the heat shrink tube on the cable. Similarly, the second shift fork is connected to the second shift fork base via a rotating shaft, an arc groove is provided on the second shift fork base, a positioning pin provided on the second shift fork is embedded in the arc groove on the second shift fork base, and a torsion spring is provided between the second shift fork and the second shift fork base, so that the second shift fork can rotate relative to the second shift fork base within the length of the arc groove of the second shift fork base, thereby ensuring that the second shift fork can reliably shift to the heat shrink tube during operation and accurately and effectively position the heat shrink tube on the cable.

[0043] Furthermore, in one embodiment of the present invention, the automatic lifting and centering mechanism also includes an up and down movement guide mechanism, which is arranged between the mounting frame and the lifting plate, and includes a limit block 15 and a limit adjustment bolt 16; the limit block 15 is arranged at the upper end of the 180-degree opening and closing finger cylinder 9, and the limit adjustment bolt 16 passes through the safety shield 18 and is threadedly connected to the limit block 15. Rotating the limit adjustment bolt 16 can move the limit block forward and backward, so that the first clamping jaw 8 and the second clamping jaw of the 180-degree opening and closing finger cylinder 9 change the contact point with the limit block 15 when flipping upward, thereby changing the rotation angle of the first clamping jaw 8 and the second clamping jaw, and then adjusting the first lever 13 and the second lever to move the fork along the guide rail 6 to the middle position, and changing the positioning position of the heat shrink tube pushed toward the middle along the cable. In actual application, the cross-section of the limit block 15 is triangular, see for details. Figure 5 .

[0044] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An automatic lifting and centering mechanism for positioning a heat shrink tube, characterized in that: include: Mounting frame; The lifting and centering mechanism comprises a 180-degree opening and closing finger cylinder, a lifting plate, a first guide column, a second guide column, a first lever and a second lever; the 180-degree opening and closing finger cylinder is connected to the mounting frame; the lifting plate is provided with a symmetrical first guide groove and a second guide groove, and both guide grooves include a connected arc segment and a straight line segment; the first guide column and the second guide column are respectively connected to the first clamping jaw and the second clamping jaw of the 180-degree opening and closing finger cylinder, and are located in the corresponding first guide groove or the second guide groove and connected to the lifting plate; the first lever and the second lever are respectively connected to the first clamping jaw and the second clamping jaw of the 180-degree opening and closing finger cylinder; The shift fork mechanism is connected to the lifting plate and comprises a first shift fork and a second shift fork which are arranged opposite to each other. The first shift fork and the second shift fork are respectively connected to the corresponding first shift rod and the second shift rod in a contacting manner.

2. The automatic lifting and centering mechanism for positioning a heat shrink tube according to claim 1, characterized in that: The automatic lifting and centering mechanism also includes an electrode unit, which includes an electrode cylinder, an insulating block, and two electrodes arranged opposite to each other. The electrode cylinder is fixedly connected to one side of the mounting frame, one end of the insulating block is connected to the electrode cylinder, and the other end is respectively connected to the two electrodes.

3. The automatic lifting and centering mechanism for positioning a heat shrink tube according to claim 2, characterized in that: The two electrodes are electrically connected to the first controller, and each electrode touches the exposed part of the cable that needs to be heat shrunk, so that the electrode is conductive, triggering the first controller to control the electrode cylinder to pull the insulating block and the electrode to sink; the 180-degree opening and closing finger cylinder is electrically connected to the second controller. When the electrodes in the electrode unit are conductive, the electrode cylinder pulls the insulating block and the electrode to sink, and the 180-degree opening and closing finger cylinder is driven by the second controller to drive the first clamp and the second clamp to flip up and down.

4. The automatic lifting and centering mechanism for positioning a heat shrink tube according to claim 2, characterized in that: The two electrodes are both provided with waist-shaped holes, and are connected to the insulating block by screws through the waist-shaped holes. The distance between the two electrodes is adjustable.

5. The automatic lifting and centering mechanism for positioning a heat shrink tube according to claim 2, characterized in that: The left-right symmetric center line of the 180-degree opening and closing finger cylinder coincides with the left-right symmetric center line of the electrode unit and the left-right symmetric center line of the lifting plate.

6. The automatic lifting and centering mechanism for positioning a heat shrink tube according to claim 1, characterized in that: When the first guide column and the second guide column are located in the straight section of the first guide groove and the second wire groove, the first clamp and the second clamp push the lifting plate to move up and down; when the first guide column and the second guide column are located in the arc section of the first guide groove and the second wire groove, the first clamp and the second clamp no longer push the lifting plate to move up and down, but push the first lever and the second lever to shift the first fork and the second fork to make a reciprocating relative motion.

7. The automatic lifting and centering mechanism for positioning a heat shrink tube according to claim 1, characterized in that: The fork mechanism also includes a guide rail, a first guide rail slider, a second guide rail slider, a first fork base, a second fork base, a first guide rail limit block and a second guide rail limit block, the guide rail is fixedly arranged at the upper end of the lifting plate, the first guide rail slider and the second guide rail slider are relatively arranged on the guide rail, and can slide back and forth along the guide rail; the first fork base and the second fork base are respectively fixedly connected to the first guide rail slider and the second guide rail slider; the first fork and the second fork are respectively connected to the first fork base and the second fork base; the first guide rail limit block and the second guide rail limit block are respectively arranged at both ends of the guide rail; when the first clamping jaw and the second clamping jaw of the 180-degree opening and closing finger cylinder flip and drive the lifting plate to move up and down, after the first guide column and the second guide column enter the arc section of the guide groove, the lifting plate is pushed to the highest position, and the first shift rod and the second shift rod respectively shift the first fork and the second fork on the guide rail to make a reciprocating relative motion.

8. The automatic lifting and centering mechanism for positioning a heat shrink tube according to claim 7, characterized in that: The first fork and the second fork are elastically connected to the first fork base and the second fork base respectively, so that the fork is pressed down along with the height of the cable after touching the cable.

9. The automatic lifting and centering mechanism for positioning a heat shrink tube according to claim 1, characterized in that: The automatic lifting and centering mechanism for positioning the heat shrink tube also includes an up-and-down motion guiding mechanism, which is arranged between the mounting frame and the lifting plate.

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