Machine tool full-automatic universal head cable connecting device

Abstract

The invention relates to a full-automatic universal head cable connecting device of a machine tool, and relates to the technical field of mechanical connection. Comprising a plug assembly, a cable support, a cable support connecting plate and a universal head cable supporting frame, the cable support and the cable support connecting plate are connected and then arranged on the outer ring of the universal head cable supporting frame in a sleeving mode and can rotate, the plug assembly is fixed to the outer wall of the cable support, and a cable connecting the plug assembly and a universal head penetrates through a drag chain. The drag chain can rotate along with the cable support and the cable support connecting plate and can rotate relative to the universal head cable supporting frame, and all the components are further provided with specific structural designs such as matching of the annular rotating groove and the inserting connection protrusion and guiding of the drag chain through the blocking edge. The device achieves the effects of realizing stable connection of the cable of the full-automatic universal head of the machine tool, enabling the cable to be orderly arranged and flexibly move in the rotating process of the universal head, avoiding the problems of cable winding, abrasion and the like, and guaranteeing the connection reliability and the service life of the cable.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of mechanical connection, in particular to a machine tool full-automatic universal head cable connection device. BACKGROUND

[0002] In the field of machine tool processing, as a key component for realizing multi-axis linkage processing, the running stability and service life of the universal head directly affect the machining precision and production efficiency of the whole machine. However, the universal head products on the current market have many technical pain points in actual application, which need to be solved urgently. For the traditional universal head with an A-axis loose clamp signal inside, the cable connection structure design has obvious defects. During the frequent rotation of the universal head, the drag chain of the connecting plug and the universal head is prone to disordered swinging due to the lack of effective constraint, and the relative movement of the plug and the cable lacks buffer protection, which causes the drag chain and the plug to be easily mechanically damaged. Specifically, the drag chain is prone to winding, jamming or even breaking during rotation, and the plug is prone to poor contact or shell damage due to repeated force impact, which seriously affects the continuous operation of the equipment. SUMMARY

[0003] In order to solve the above problems, the application provides a machine tool full-automatic universal head cable connection device.

[0004] A machine tool full-automatic universal head cable connection device, comprising a plug assembly, a cable support, a cable support connecting plate and a universal head cable support frame, the cable support and the cable support connecting plate are sleeved on the outer ring of the universal head cable support frame after being connected by screws, so that the cable support and the cable support connecting plate can rotate relative to the cable support frame; A plug wire inlet is formed in the inner ring of the cable support, an outlet is formed on the universal head cable support frame, a first blocking frame is fixed on the universal head cable support frame, a second blocking edge is arranged on the cable support, the first blocking frame and the second blocking edge form a drag chain moving groove, a drag chain is adapted in the drag chain moving groove, one end of the drag chain is fixed at the plug wire inlet position on the cable support, and the other end of the drag chain is fixed at the outlet position on the universal head. A plurality of cables connecting the plug assembly and the universal head are arranged in the accommodation space inside the drag chain, the drag chain can rotate synchronously with the cable support and the cable support connecting plate, and relative rotation is formed between the drag chain and the universal head cable support frame.

[0005] By adopting the technical scheme, the cable support and the cable support connecting plate are rotatably sleeved outside the universal-joint cable support frame, the first stopper and the second stopper are used to form a drag chain moving groove to constrain the movement of the drag chain, the relative rotation of the cable support, the connecting plate and the universal-joint cable support frame is realized, and the drag chain moves synchronously in the limited space, so that the disorderly swinging of the drag chain and the internal cable during the rotation of the universal joint is effectively avoided, and a stable movement path is provided for the cable.

[0006] Preferably, when the cable support and the cable support connecting plate are connected by screws, an annular rotating groove is formed at the joint of the two, the outer wall of the universal-joint cable support frame is provided with a ring of plug-in protrusions, and the universal-joint cable support frame is inserted into the rotating groove through the plug-in protrusions to form a rotating pair. By adopting the technical scheme, the rotating pair formed by the annular rotating groove and the plug-in protrusions not only realizes the rotatable connection between the cable support, the connecting plate and the universal-joint cable support frame, but also forms radial constraint on the relative movement of the two through the cooperation of the protrusions and the groove, reduces the radial shaking during rotation, improves the stability and smoothness of the overall structure, and ensures the accurate and controllable rotation.

[0007] Preferably, the first stopper is an arc-shaped frame structure arranged along the outer peripheral surface of the universal-joint cable support frame, which can roll the drag chain into an arc shape along the inner wall of the cable support during the rotation of the universal joint. By adopting the technical scheme, the first stopper of the arc-shaped frame actively rolls the drag chain into an arc shape during the rotation of the universal joint, which can forcibly regulate the shape of the drag chain, avoid irregular deformation such as twisting and folding of the drag chain due to rotation, reduce abnormal friction between the drag chain and other components, and reduce the risk of drag chain breakage.

[0008] Preferably, the second stopper is a strip-shaped protrusion structure arranged on the inner wall of the cable support, which guides the first and last sections of the drag chain to be layered during the movement of the drag chain.

[0009] By adopting the technical scheme, the second stopper of the strip-shaped protrusion guides the first and last sections of the drag chain to be layered, so that the drag chain forms an orderly segmented arc trajectory during movement, avoids entanglement and stacking of the first and last sections of the drag chain due to different movement directions, further optimizes the movement path of the drag chain, and ensures that the drag chain always maintains a regular state during rotation.

[0010] Preferably, the plug assembly includes a plug shell composed of an upper plug shell and a lower plug shell, a wiring cover plate is mounted in the lower plug shell by screws, and wiring holes are formed in the wiring cover plate and the lower plug shell respectively and communicate with plug wire inlets.

[0011] By adopting the technical scheme, the matching of the wiring cover plate and the wiring hole provides a clear threading channel for the cable, can orderly guide the cable entering from the plug wire inlet to the inside of the lower plug shell, avoids the disorderly distribution of the cable in the shell, facilitates the later maintenance and replacement of the cable, and improves the assembly convenience of the device.

[0012] Preferably, the lower plug connector is arranged in the lower plug shell, the mounting plate is uniformly provided with four springs with the same elastic coefficient at the bottom, one end of the spring abuts against the bottom of the mounting plate, and the other end abuts against the inner bottom surface of the lower plug shell, and the mounting plate locks the spring and the lower plug connector as a whole in the lower plug shell through two symmetrically distributed guide pins. By adopting the technical scheme, the four springs with the same elastic coefficient at the bottom of the mounting plate can provide a buffering effect when the plug is inserted or subjected to external force impact, reducing the rigid collision between the plugs; the guide pin locks the spring and the lower plug connector as a whole, avoiding displacement of the components during movement, ensuring the stability of the position of the lower plug connector, and prolonging the service life of the plug.

[0013] Preferably, the upper plug shell is fixed on the specified module of the machine tool through screws, and forms a rigid connection with the machine tool module, the upper plug connector matched with the lower plug connector is embedded and fixed in the upper plug shell, and the pin layout of the upper plug connector and the lower plug connector completely corresponds.

[0014] By adopting the technical scheme, the rigid connection of the upper plug shell and the machine tool module ensures the position fixation of the upper plug, and the matching design and corresponding pin layout of the upper plug connector and the lower plug connector ensure the accuracy and reliability of the electrical connection, avoid poor contact caused by mispositioning of the plug, and ensure the stability of signal or power transmission.

[0015] Preferably, the bottom of the upper plug shell is provided with a pin hole corresponding to the position of the guide pin, and the inner diameter of the pin hole and the outer diameter of the guide pin form a clearance fit.

[0016] By adopting the technical scheme, the clearance fit of the pin hole and the guide pin plays a precise guiding role in the plug insertion process, ensures that the upper plug connector and the lower plug connector can be accurately connected, and reduces the deviation and jamming during insertion; at the same time, the cooperation of the guide pin and the pin hole can also share the transverse shear force, and enhance the overall connection strength of the plug assembly.

[0017] Preferably, the wiring cover plate guides the cable entering from the plug wire inlet through the wiring hole, so that the cable is connected with the wiring end of the lower plug connector.

[0018] By adopting the technical scheme, the cable cover plate guides the cable through the cable hole, ensures that the cable can be accurately and stably connected with the wiring end of the lower plug-in connector, avoids poor contact or force pulling of the cable due to connection mispositioning, and improves the reliability of the cable connection.

[0019] Preferably, the drag chain is a bidirectional bending drag chain.

[0020] By adopting the technical scheme, the bidirectional bending drag chain can adapt to the complex motion trajectory generated by the multi-directional rotation of the universal head, can flexibly bend in the horizontal and vertical directions, avoids the motion jamming of the traditional drag chain due to the limitation of one-way bending, and further improves the flexibility of the drag chain with the rotation of the universal head.

[0021] In summary, the present application has at least one of the following beneficial technical effects: 1. Through the cooperative design of the drag chain moving groove, the first blocking frame, the second blocking edge and the bidirectional bending drag chain, the cable is always in an orderly constrained state during the rotation of the universal head, effectively avoiding the problems of entanglement, jamming and breakage of the cable and the drag chain, and ensuring the flexibility and regularity of the cable movement; 2. The spring buffer structure in the plug assembly, the guide pin guiding design and the precise matching of the upper and lower plugs reduce the impact damage and mispositioning risk during plug insertion, while enhancing the firmness of the connection, significantly improving the reliability of the cable electrical connection, and prolonging the service life of the plug and the cable; 3. The rotation pair formed by the annular rotating groove and the plug-in protrusion ensures the smoothness of the relative rotation of the components, and the modular design of the cable support, the connecting plate and the universal head cable support frame improves the adaptability of the device to different rotation conditions, the overall structure is stable and easy to assemble and maintain, and provides reliable protection for the continuous and stable operation of the machine tool universal head. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a perspective view of an embodiment of the present application, mainly showing the assembly relationship of the cable connection device, the universal head and the machine tool module; Figure 2 is a perspective view of the cable connection device; Figure 3 is a top view of the cable connection device; Figure 4 and Figure 5 are perspective views of two views of the universal head and the cable connection device, mainly showing the assembly relationship between the two; Figure 6 is a side view of the cable connection device; Figure 7 is a perspective view of the specific structure of the plug assembly.

[0023] Explanation of reference signs: 1, cable support; 100, machine tool module; 110, plug wire inlet; 120, second retaining edge; 2, cable support connecting plate; 3, drag chain; 6, lower plug housing; 7, wire routing cover plate; 70, wire routing hole; 8, spring; 9, guide pin; 10, lower plug; 11, mounting plate; 12, upper plug housing; 121, pin hole; 13, upper plug; 61, drag chain running groove; 71, plug-in protrusion; 72, rotating groove; 52, gimbal head; 5, gimbal head cable support; 4, first retaining bracket; 51, wire outlet. DETAILED DESCRIPTION

[0024] The application will be further described in detail below with reference to the accompanying drawings.

[0025] In the description of the application, it should be understood that the orientation description, such as the orientation or position relationship indicated by up, down, front, back, left, right, etc., is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application.

[0026] The application is a machine tool full-automatic gimbal head cable connection device, which aims to solve the problems of easy entanglement, jamming, and breakage of the drag chain 3 and easy damage of the plug in the traditional gimbal head 52 cable connection structure, and improves the running stability and service life of the gimbal head 52 through reasonable structural design.

[0027] Reference Figure 1 , Figure 2 and Figure 3 The device includes a plug assembly, a cable support 1, a cable support connecting plate 2, and a gimbal head cable support 5. The cable support 1 and the cable support connecting plate 2 are sleeved on the outer ring of the gimbal head cable support 5 after being connected by screws, so that the cable support 1 and the cable support connecting plate 2 can rotate relative to the cable support. When the cable support 1 and the cable support connecting plate 2 are connected by screws, an annular rotating groove 72 is formed at the junction of the two, and a circle of plug-in protrusions 71 is formed on the outer wall of the gimbal head cable support 5. The gimbal head cable support 5 is inserted into the rotating groove 72 through the plug-in protrusions 71, thereby forming a rotating pair and providing a structural basis for the rotation of the cable support 1 and the cable support connecting plate 2 relative to the gimbal head cable support 5.

[0028] Reference Figure 2 , Figure 3 and Figure 4For the installation and movement guiding of the drag chain 3, a plug-in port 110 is opened in the inner ring of the cable support 1, and a cable outlet port 51 is opened in the gimbal cable support 5. The gimbal cable support 5 is fixed with a first blocking frame 4, and the cable support 1 is provided with a second blocking edge 120. The first blocking frame 4 and the second blocking edge 120 form a drag chain movement groove 61, and the drag chain 3 is adapted in the drag chain movement groove 61. One end of the drag chain 3 is fixed at the plug-in port 110 position of the cable support 1, and the other end is fixed at the cable outlet port 51 position of the gimbal 52. The first blocking frame 4 is an arc-shaped frame structure arranged along the outer circumferential surface of the gimbal cable support 5. When the gimbal 52 rotates, the drag chain 3 can be rolled into an arc shape along the inner wall of the cable support 1, effectively avoiding the disorder of the drag chain 3. The second blocking edge 120 is a strip-shaped protruding structure arranged on the inner wall of the cable support 1. During the movement of the drag chain 3, it can guide the head and tail of the drag chain 3 to be layered, and further standardize the movement trajectory of the drag chain 3.

[0029] The plurality of cables connecting the plug-in assembly and the gimbal 52 are arranged in the accommodation space inside the drag chain 3. The drag chain 3 can rotate synchronously with the cable support 1 and the cable support connecting plate 2, and form relative rotation with the gimbal cable support 5. This design makes the drag chain 3 orderly follow the movement during the rotation of the gimbal 52, avoiding the problems of winding and jamming of the traditional structure.

[0030] Referring to Figure 2 , Figure 4 , Figure 6 and Figure 7The plug assembly comprises a plug shell composed of an upper plug shell 12 and a lower plug shell 6. A wiring cover plate 7 is screw-mounted in the lower plug shell 6, and the wiring cover plate 7 and the lower plug shell 6 are respectively provided with wiring holes 70 communicating with plug wiring ports 110, facilitating the threading of cables. The lower plug shell 6 is provided with a lower plug connector 10, which is mounted on a mounting plate 11. The mounting plate 11 is uniformly provided at the bottom with four springs 8 of the same elastic coefficient, one end of each spring 8 abutting against the bottom of the mounting plate 11 and the other end abutting against the inner bottom surface of the lower plug shell 6. The mounting plate 11 integrally locks the springs 8 and the lower plug connector 10 inside the lower plug shell 6 through two symmetrically distributed guide pins 9. The arrangement of the springs 8 can ensure the distance during plug insertion and reduce the risk of plug damage due to force impact. The upper plug shell 12 is fixed on the designated module of the machine tool through screws and forms a rigid connection with the machine tool module 100. The upper plug shell 12 is embedded and fixed with an upper plug connector 13 matched with the lower plug connector 10 inside. The pin layout of the upper plug connector 13 and the lower plug connector 10 completely corresponds, ensuring good electrical connection. Meanwhile, the bottom of the upper plug shell 12 is provided with pin holes 121 corresponding to the positions of the guide pins 9. The inner diameter of the pin holes 121 and the outer diameter of the guide pins 9 form a clearance fit, which plays a guiding role during plug insertion and ensures the accuracy of insertion. The arrangement of the guide pins 9 can also strengthen the connection firmness of the upper plug shell 12 and the lower plug shell 6, avoiding the influence of the transverse shear force between the upper plug shell 12 and the lower plug shell 6.

[0031] Referring to Figure 1 , Figure 4 and Figure 5The outer wall of the universal joint 52 is fixedly connected with the inner wall of the inner ring of the universal joint cable support frame 5, so that the universal joint 52 can drive the universal joint cable support frame 5 to rotate when rotating, and when the universal joint 52 rotates, the universal joint cable support frame 5 can rotate relative to the cable support frame 1 and the cable support frame connecting plate 2 because a rotary pair is formed between the cable support frame 1, the cable support frame connecting plate 2 and the universal joint cable support frame 5. At this time, the drag chain 3 moves in the drag chain moving groove 61 and moves with the rotation of the universal joint cable support frame 5, and the first blocking frame 4 guides the drag chain 3 along the inner wall of the cable support frame 1 into an arc shape, and the second blocking edge 120 does not rotate with the universal joint cable support frame 5, so that when the drag chain 3 passes through the second blocking edge 120, the two ends of the drag chain 3 are separated by the second blocking edge 120 to form a layered wiring, that is, the drag chain 3 is bent into two sections, and both sections are arc-shaped, and the two sections of the arc-shaped drag chain 3 pass through the two sides of the second blocking edge 120, so that one section of the two sections of the drag chain 3 is located in the drag chain moving groove 61, and the other section is located between the universal joint 52 and the second blocking edge 120. Through the trajectory guidance of the first blocking frame 4 and the second blocking edge 120 on the drag chain 3, the winding and jamming of the drag chain 3 are avoided. Meanwhile, the cable connected with the plug assembly and the universal joint 52 is arranged in the interior of the drag chain 3, and the drag chain 3 protects the cable and reduces the abrasion of the cable.

[0032] The implementation principle of the embodiment of the present application is that when the universal joint 52 starts to rotate, the outer wall of the universal joint 52 is fixedly connected with the inner wall of the inner ring of the universal joint cable support frame 5, so that the universal joint 52 directly drives the universal joint cable support frame 5 to rotate synchronously.

[0033] At this time, the cable support frame 1 and the cable support frame connecting plate 2 are sleeved on the outer ring of the universal joint cable support frame 5 through screw connection, and a rotary pair is formed between the cable support frame 1, the cable support frame connecting plate 2 and the universal joint cable support frame 5 through the annular rotating groove 72 and the plug-in protrusion 71 of the universal joint cable support frame 5, so that the universal joint cable support frame 5 rotates relative to the cable support frame 1 and the cable support frame connecting plate 2, and the cable support frame 1 and the cable support frame connecting plate 2 remain stable. This setting can facilitate the rotation adjustment of the universal joint 52 according to needs.

[0034] With the rotation of the universal joint cable support frame 5, the first blocking frame 4 fixed thereon rotates synchronously, and the second blocking edge 120 on the cable support frame 1 remains stationary. Since the drag chain 3 is adapted in the drag chain moving groove 61 formed by the first blocking frame 4 and the second blocking edge 120, and one end of the drag chain 3 is fixed to the plug wire inlet 110 of the cable support frame 1 and the other end is fixed to the wire outlet 51 of the universal joint 52, the other end of the drag chain 3 is also located between the second blocking edge 120 and the universal joint 52. The drag chain 3 moves in the drag chain moving groove 61 between the second blocking edge 120 and the universal joint 52 with the relative rotation of the universal joint cable support frame 5 and the cable support frame 1. During the movement of the drag chain 3, the rotating first baffle 4 will roll the drag chain 3 into an arc shape along the inner wall of the cable support 1, avoiding the disorder of the drag chain 3; the static second baffle 120 will guide the first and last sections of the drag chain 3 to be layered, so that the drag chain 3 is bent into two arc structures, respectively passing through the two sides of the second baffle 120, further standardizing the movement trajectory of the drag chain 3, and effectively preventing the drag chain 3 from being wound and stuck. At the same time, the plurality of cables connecting the plug assembly and the gimbal head 52 are arranged in the accommodation space inside the drag chain 3. When the drag chain 3 rotates, it will wrap and protect the internal cables, reducing the wear of the cables caused by movement. When the plug assembly is inserted, the spring 8 in the lower plug housing 6 will exert an elastic buffer force on the lower plug 10 through the mounting plate 11, and the gap between the pin hole 121 of the upper plug housing 12 and the guide pin 9 will be guided to make the upper plug 13 and the lower plug 10 accurately and smoothly connected, avoiding damage to the plug caused by impact during insertion, and ensuring the stability of the electrical connection. Through the coordinated movement of the above-mentioned components, the entire device realizes the ordering of the cable connection when the gimbal head 52 rotates, solves the problems of winding, sticking, breaking of the drag chain 3 and easy damage of the plug in the traditional structure, thereby improving the service life of the gimbal head 52 and the stability of the cable transmission.

[0035] The above only describes the preferred embodiments of the present application, and is not used to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A fully automatic universal joint cable connection device for machine tools, characterized in that, It includes a plug assembly, a cable bracket (1), a cable bracket connecting plate (2), and a universal cable support frame (5). The cable bracket (1) and the cable bracket connecting plate (2) are connected by screws and then fitted onto the outer ring of the universal cable support frame (5), so that the cable bracket (1) and the cable bracket connecting plate (2) can rotate relative to the cable support frame. The cable bracket (1) has a plug inlet (110) on its inner ring, and the universal cable support frame (5) has an outlet (51). The universal cable support frame (5) is fixed with a first baffle (4), and the cable bracket (1) is provided with a second baffle (120). The first baffle (4) and the second baffle (120) together form a drag chain groove (61). A drag chain (3) is adapted to be installed in the drag chain groove (61). One end of the drag chain (3) is fixed at the plug inlet (110) on the cable bracket (1), and the other end of the drag chain (3) is fixed at the outlet (51) on the universal head (52). Multiple cables connecting the plug assembly and the universal joint (52) are threaded through the receiving space inside the cable chain (3). The cable chain (3) can rotate relative to the universal joint cable support frame (5) as the cable bracket (1) and the cable bracket connecting plate (2) rotate synchronously.

2. The fully automatic universal joint cable connection device for machine tools according to claim 1, characterized in that, When the cable bracket (1) and the cable bracket connecting plate (2) are connected by screws, an annular rotating groove (72) is formed at the junction of the two. A ring of insertion protrusions (71) is opened on the outer wall of the universal cable support frame (5). The universal cable support frame (5) is inserted into the rotating groove (72) through the insertion protrusions (71) to form a rotating pair.

3. The fully automatic universal joint cable connection device for machine tools according to claim 1, characterized in that, The first baffle (4) is an arc-shaped frame structure set along the outer periphery of the universal head cable support frame (5). When the universal head (52) rotates, it can straighten the drag chain (3) into an arc shape along the inner wall of the cable bracket (1).

4. The fully automatic universal joint cable connection device for machine tools according to claim 1, characterized in that, The second baffle (120) is a strip-shaped protrusion structure set on the inner wall of the cable bracket (1). The second baffle (120) guides the first and last sections of the cable chain (3) to run in layers during the movement of the cable chain (3).

5. The fully automatic universal joint cable connection device for machine tools according to claim 1, characterized in that, The plug assembly includes a plug housing consisting of an upper plug housing (12) and a lower plug housing (6). A cable routing cover (7) is installed inside the lower plug housing (6) by screws. Cable routing holes (70) communicating with the plug inlet (110) are respectively opened on the cable routing cover (7) and the lower plug housing (6).

6. The fully automatic universal joint cable connection device for machine tools according to claim 5, characterized in that, The lower plug housing (6) is provided with a lower plug connector (10), which is mounted on the mounting plate (11). The bottom of the mounting plate (11) is evenly distributed with four springs (8) of the same elastic coefficient. One end of the spring (8) abuts against the bottom of the mounting plate (11), and the other end abuts against the inner bottom surface of the lower plug housing (6). The mounting plate (11) locks the spring (8) and the lower plug connector (10) together inside the lower plug housing (6) by two symmetrically distributed guide pins (9).

7. The fully automatic universal joint cable connection device for machine tools according to claim 6, characterized in that, The upper plug housing (12) is fixed to the designated module of the machine tool by screws, forming a rigid connection with the machine tool module. An upper plug (13) matching the lower plug (10) is embedded and fixed inside the upper plug housing (12). The pin layouts of the upper plug (13) and the lower plug (10) are completely corresponding.

8. A fully automatic universal joint cable connection device for machine tools according to claim 6, characterized in that, The bottom of the upper plug housing (12) is provided with a pin hole (121) corresponding to the position of the guide pin (9), and the inner diameter of the pin hole (121) and the outer diameter of the guide pin (9) form a clearance fit.

9. A fully automatic universal joint cable connection device for machine tools according to claim 6, characterized in that, The cable tray (7) guides the cable entering from the plug inlet (110) through the cable hole (70) so that the cable is connected to the terminal of the lower connector (10).

10. A fully automatic universal joint cable connection device for machine tools according to claim 1, characterized in that, The cable chain (3) is a bidirectional curved cable chain (3).

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