Connecting sleeve for quick butt joint of center rods

Abstract

The connecting sleeve comprises a sleeve, a left inserting rod and a right inserting rod, the sleeve is of a hollow structure with openings in the left end and the right end, the left inserting rod is inserted into the opening in the left end of the sleeve, and the right inserting rod is inserted into the left inserting rod through the opening in the right end of the sleeve. A locking mechanism used for connecting the left insertion rod and the right insertion rod in an inserted mode and a limiting mechanism used for preventing the left insertion rod and the right insertion rod from rotating relatively are arranged between the left insertion rod and the right insertion rod, and the sleeve drives the locking mechanism to be unlocked when sliding on the left insertion rod. The left inserting rod and the right inserting rod are connected in an inserted mode through the locking mechanism, the left inserting rod and the right inserting rod are prevented from rotating relatively through the limiting mechanism, meanwhile, the locking mechanism is unlocked through the sliding sleeve, and therefore the tedious degree of connection fixing operation and separation operation of the taping machine center rod is reduced.

Description

Technical Field

[0001] The utility model relates to the field of tape wrapping machines, and particularly relates to a connecting sleeve for quickly docking a central rod. Background Art

[0002] In the process of cable production, a tape wrapping machine (wrapping machine) is an indispensable and important device, mainly used to tightly wrap various tapes (such as mica tape, cotton paper tape, aluminum foil, polyester film, etc.) around the core wire by rotating a turntable to achieve the insulation or protection function of the cable.

[0003] In the tape wrapping machine equipment, the central rod of the tape wrapping machine needs to be fixed after docking, so that the tape feeding mechanism and the wrapping mechanism operate synchronously. The existing docking and fixing method of the central rod of the wrapping machine usually uses screws for connection and fixing. The connection and fixing operation and separation operation of this connection method are relatively troublesome, and the screws are prone to slipping teeth under the long-term operation of the tape wrapping machine, increasing the failure rate of the tape wrapping machine. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a connecting sleeve for quickly docking a central rod. In this connecting sleeve, a left insertion rod and a right insertion rod are inserted and connected through a locking mechanism, and a limiting mechanism is used to prevent the left insertion rod and the right insertion rod from rotating relative to each other. At the same time, a sliding sleeve is used to unlock the locking mechanism, thereby reducing the complexity of the connection and fixing operation and separation operation of the central rod of the tape wrapping machine.

[0005] The technical solution adopted by the utility model to solve the above problems is:

[0006] A connecting sleeve for quickly docking a central rod, including a sleeve, a left insertion rod and a right insertion rod. The sleeve has a hollow structure with openings at both left and right ends. The left insertion rod is inserted into the left end opening of the sleeve, and the right insertion rod is inserted into the left insertion rod through the right end opening of the sleeve. A locking mechanism for connecting the left insertion rod and the right insertion rod by insertion and a limiting mechanism for preventing the left insertion rod and the right insertion rod from rotating relative to each other are arranged between the left insertion rod and the right insertion rod. When the sleeve slides on the left insertion rod, the locking mechanism is driven to unlock.

[0007] In the above technical solution, preferably, the locking mechanism includes a spring and a plurality of marbles. The spring is sleeved on the left insertion rod, and the left and right ends of the spring respectively abut against the left insertion rod and the inside of the sleeve. A plurality of through holes are formed in the left insertion rod, and the marbles are respectively placed in the through holes in a one-to-one correspondence. An annular first groove for the marbles to be inserted into is formed on the outer side surface of the right insertion rod, and the marbles abut against the inner side surface of the sleeve.

[0008] In the above technical solution, preferably, an annular convex ring is provided on the inner side surface of the sleeve. The vertical cross-section of the convex ring is a right trapezoid. The right end of the spring abuts against the vertical side surface on the left side of the convex ring. The right side surface of the convex ring is an inclined surface, and the ball is located inside the convex ring.

[0009] In the above technical solution, preferably, the limiting mechanism includes screws, screw holes and clamping grooves. Two screw holes are provided and symmetrically arranged front and back on the left insertion rod. Two screws are provided and respectively fixed in the two screw holes. Two clamping grooves are provided and symmetrically arranged front and back on the left end of the right insertion rod. The inner ends of the two screws are respectively located in the two clamping grooves.

[0010] In the above technical solution, preferably, the screws are socket head cap screws without heads.

[0011] In the above technical solution, preferably, a second annular groove is provided on the left insertion rod, and a reverse shaft clamp is sleeved in the second annular groove. The right side surface of the convex ring abuts against the reverse shaft clamp.

[0012] In the above technical solution, preferably, an annular anti-slip groove is provided on the outer side surface of the sleeve.

[0013] Compared with the prior art, the present invention has the following advantages and effects:

[0014] The present invention inserts the right insertion rod into the left insertion rod and realizes the connection through the locking mechanism, and at the same time prevents the relative rotation of the left insertion rod and the right insertion rod through the limiting mechanism. Therefore, by connecting the tape feeding mechanism and the winding mechanism in the tape wrapping machine to the left insertion rod and the right insertion rod respectively, the synchronous rotation of the left insertion rod and the right insertion rod is realized, and the locking mechanism is unlocked through the sliding sleeve, so that the right insertion rod can be pulled out of the left insertion rod, realizing the separation of the left insertion rod and the right insertion rod. Therefore, the present invention can reduce the complexity of the connection and fixing operation and the separation operation of the central rod of the tape wrapping machine, and improve the convenience of use of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic assembly structure diagram of a connecting sleeve for quickly docking a central rod in an embodiment of the present invention.

[0016] Figure 2 is Figure 1 exploded view of.

[0017] Figure 3 is Figure 1 front cross-sectional view of.

[0018] Among them, there are a sleeve 1, a convex ring 11, an anti-slip groove 12, a left insertion rod 2, a through hole 21, a second groove 22, a right insertion rod 3, a first groove 31, a locking mechanism 4, a spring 41, a ball 42, a limiting mechanism 5, a screw 51, a screw hole 52, a card slot 53, and a reverse shaft clamp 6. Specific embodiments

[0019] The present utility model will be further described in detail below in conjunction with the accompanying drawings and through embodiments. The following embodiments are explanations of the present utility model, and the present utility model is not limited to the following embodiments.

[0020] See Figures 1-3 , a connecting sleeve for quickly docking a center rod in this embodiment includes a sleeve 1, a left insertion rod 2, and a right insertion rod 3. The sleeve 1 has a hollow structure with openings at both left and right ends. The left insertion rod 2 is inserted into the left end opening of the sleeve 1, and the right insertion rod 3 is inserted into the left insertion rod 2 through the right end opening of the sleeve 1. A locking mechanism 4 for plugging and connecting the left insertion rod 2 and the right insertion rod 3 and a limiting mechanism 5 for preventing the relative rotation of the left insertion rod 2 and the right insertion rod 3 are provided between the left insertion rod 2 and the right insertion rod 3. When the sleeve 1 slides on the left insertion rod 2, it drives the locking mechanism 4 to unlock.

[0021] The present utility model inserts the right insertion rod 3 into the left insertion rod 2 and realizes the connection through the locking mechanism 4, and at the same time prevents the relative rotation of the left insertion rod 2 and the right insertion rod 3 through the limiting mechanism 5. Therefore, by connecting the tape feeding mechanism and the winding mechanism in the tape wrapping machine to the left insertion rod 2 and the right insertion rod 3 respectively, the synchronous rotation of the left insertion rod 2 and the right insertion rod 3 is realized. And by sliding the sleeve 1, the locking mechanism 4 is unlocked, so that the right insertion rod 3 can be pulled out of the left insertion rod 2, realizing the separation of the left insertion rod 2 and the right insertion rod 3. Therefore, the present utility model can reduce the complexity of the connection and fixation operation and the separation operation of the center rod of the tape wrapping machine, and improve the convenience of use of the present utility model.

[0022] See Figure 2 , Figure 3 , the locking mechanism 4 includes a spring 41 and a plurality of balls 42. The spring 41 is sleeved on the left insertion rod 2, and the left and right ends of the spring 41 respectively abut against the left insertion rod 2 and inside the sleeve 1. A plurality of through holes 21 are provided on the left insertion rod 2, and the balls 42 are respectively placed in the through holes 21 in one-to-one correspondence. An annular first groove 31 for the balls 42 to snap into is provided on the outer side surface of the right insertion rod 3, and the balls 42 abut against the inner side surface of the sleeve 1.

[0023] When the right insertion rod 3 is inserted into the left insertion rod 2 for fixation, the left insertion rod 2 and the right insertion rod 3 are connected by inserting the marbles 42 into the through holes 21 of the left insertion rod 2 and the first grooves 31 of the right insertion rod 3 simultaneously. At the same time, the moving sleeve 1 limits the marbles 42 to prevent the marbles 42 from slipping out of the first grooves 31, which would cause the fixation effect of the right insertion rod 3 to disappear. When the right insertion rod 3 is pulled out from the left insertion rod 2, first move the sleeve 1 to allow the marbles 42 to move outwards, and then move the right insertion rod 3 to the right, so that the marbles 42 move outwards and slip out of the first grooves 31, thus separating the left insertion rod 2 and the right insertion rod 3. In the utility model, the operations of connecting and fixing, and separating the left insertion rod 2 and the right insertion rod 3 are simple and convenient, and the left insertion rod 2 and the right insertion rod 3 can be quickly connected and disassembled.

[0024] See Figure 2 、 Figure 3 An annular convex ring 11 is provided on the inner side surface of the sleeve 1. The vertical cross-section of the convex ring 11 is a right-angled trapezoid. The right end of the spring 41 abuts against the left vertical side surface of the convex ring 11. The right side surface of the convex ring 11 is an inclined surface, and the marbles 42 are located inside the convex ring 11.

[0025] The sleeve 1 remains relatively stable under the action of the spring 41, ensuring that the convex ring 11 inside the sleeve 1 is always located outside the marbles 42 to limit the marbles 42 and prevent them from slipping out, that is, ensuring the stability of the connection between the left insertion rod 2 and the right insertion rod 3.

[0026] When connecting the left insertion rod 2 and the right insertion rod 3, first drive the sleeve 1 to move to the left. At this time, the spring 41 is compressed, and the convex ring 11 moves to the left and is displaced from the position of the marbles 42. Then insert the right insertion rod 3. The right insertion rod 3 pushes the marbles 42 outwards until the first grooves 31 move to the position of the marbles 42. Release the sleeve 1 so that the sleeve 1 moves to the right under the action of the spring 41. The convex ring 11 moves to the right and guides the marbles 42 through the right inclined surface of the convex ring 11, making the marbles 42 move inwards and snap into the first grooves 31. Finally, the inner side surface of the convex ring 11 abuts against the marbles 42 to achieve the limiting effect on the marbles 42, thereby realizing the connection and fixation of the left insertion rod 2 and the right insertion rod 3.

[0027] When driving the left insertion rod 2 and the right insertion rod 3 to separate, first drive the sleeve 1 to move to the left, and the convex ring 11 moves to the left and is displaced from the position of the marbles 42. Then pull out the right insertion rod 3 to the right so that the marbles 42 move outwards and slip out of the first grooves 31. Thus, the right insertion rod 3 can be pulled out from the left insertion rod 2. When the marbles 42 move outwards, they abut against the inner wall of the sleeve 1 on the right side of the convex ring 11, and the sleeve 1 prevents the marbles 42 from falling off the left insertion rod 2.

[0028] See Figure 2 、 Figure 3, the limiting mechanism 5 includes screws 51, screw holes 52 and clamping grooves 53. There are two screw holes 52 which are symmetrically arranged front and back on the left insertion rod 2, and there are two screws 51 which are respectively fixed in the two screw holes 52. There are two clamping grooves 53 which are symmetrically arranged front and back on the left end of the right insertion rod 3, and the inner ends of the two screws 51 are respectively located in the two clamping grooves 53.

[0029] When inserting the right insertion rod 3 into the left insertion rod 2, rotate the right insertion rod 3 to adjust the positions of the two clamping grooves 53 so that the positions of the two clamping grooves 53 correspond to the positions of the two screws 51. Then continue to insert the right insertion rod 3 to the left so that the two screws 51 are clamped into the two clamping grooves 53. Through the action of the two screws 51 and the two clamping grooves 53, the coaxial fixation of the left insertion rod 2 and the right insertion rod 3 is realized. Since the direction of the force exerted by the clamping groove 53 on the screw 51 when the left insertion rod 2 and the right insertion rod 3 rotate coaxially is substantially perpendicular to the thread direction of the screw 51, the force exerted on the screw 51 along the axial direction of the screw 51 can be reduced. Therefore, the probability of the screw 51 slipping teeth can be reduced, and the failure rate during the use of the present utility model can be reduced. At the same time, the connection and separation operations of the limiting mechanism 5 are simple and convenient, and can cooperate with the locking mechanism 4 to simultaneously complete the coaxial connection and coaxial fixation of the left insertion rod 2 and the right insertion rod 3, having the advantage of simple operation.

[0030] See Figure 2 , Figure 3 , the screw 51 is an internal hexagonal headless screw 51, so the outer end of the screw 51 can completely enter the screw hole 52, thus avoiding the situation that the outer end of the screw 51 protrudes out of the screw hole 52 and hinders the movement of the sleeve 1.

[0031] See Figure 2 , Figure 3 , a ring-shaped second groove 22 is provided on the left insertion rod 2, and a reverse shaft clamp 6 is sleeved in the second groove 22, and the right side surface of the convex ring 11 abuts against the reverse shaft clamp 6.

[0032] The sleeve 1 has a tendency to move to the right under the action of the spring 41. At this time, the reverse shaft clamp 6 abuts against the right side surface of the convex ring 11 to play a limiting role on the sleeve 1, so that the position of the sleeve 1 is fixed, so that the convex ring 11 can move to the outside of the ball 42 and then no longer move to the right, thus ensuring the limiting effect of the convex ring 11 on the ball 42.

[0033] When installing the sleeve 1 on the left insertion rod 2, first sleeve the spring 41 and the sleeve 1 on the left insertion rod 2, and then sleeve the reverse shaft clamp 6 on the second groove 22 to complete the installation of the sleeve 1.

[0034] See Figure 1 , Figure 2, an annular anti-slip groove 12 is provided on the outer side surface of the sleeve 1, which reduces the probability of slipping between the hand and the sleeve 1 when the operator holds the sleeve 1 and pushes it to the right, and improves the stability during use.

[0035] The above content described in this specification is only an example of the present utility model. Those skilled in the technical field to which the present utility model belongs can make various modifications or supplements to the described specific embodiments or use similar ways to replace them. As long as it does not deviate from the content of this specification of the present utility model or exceed the scope defined by this claims, it shall fall within the protection scope of the present utility model.

Claims

1. A connection sleeve for quickly docking a center rod, characterized in that: It includes a sleeve, a left plug rod and a right plug rod. The sleeve is a hollow structure with openings on both ends. The left plug rod is inserted into the left end opening of the sleeve, and the right plug rod is inserted into the left plug rod through the right end opening of the sleeve. A locking mechanism for plug-connecting the left plug rod and the right plug rod and a limiting mechanism for preventing the left plug rod and the right plug rod from rotating relative to each other are provided between the left plug rod and the right plug rod. When the sleeve slides on the left plug rod, the locking mechanism is driven to unlock.

2. The connection sleeve for quick docking of the center rod according to claim 1, characterized in that: The locking mechanism includes a spring and a plurality of marbles. The spring is sleeved on the left insertion rod. The left and right ends of the spring respectively abut against the left insertion rod and the sleeve. The left insertion rod is provided with a plurality of through holes. The marbles are placed in the through holes one by one. The outer surface of the right insertion rod is provided with a first annular groove for the marbles to be inserted, and the marbles abut against the inner surface of the sleeve.

3. The connection sleeve for quick docking of the center rod according to claim 1, characterized in that: An annular convex ring is arranged on the inner side surface of the sleeve, and the vertical section of the convex ring is a right-angled trapezoid. The right end of the spring is against the vertical side surface on the left side of the convex ring. The right side surface of the convex ring is an inclined surface, and the marble is located on the inner side of the convex ring.

4. The connection sleeve for quick docking of a center rod according to claim 1, characterized in that: The limiting mechanism includes a screw, a screw hole and a slot. There are two screw holes and they are symmetrically opened on the left insertion rod. There are two screws and they are respectively fixed in the two screw holes. There are two slots and they are symmetrically opened on the left end of the right insertion rod. The inner ends of the two screws are respectively located in the two slots.

5. The connection sleeve for quick docking of the center rod according to claim 4, characterized in that: The screw is a hexagon socket headless screw.

6. The connection sleeve for quick docking of a center rod according to claim 1, characterized in that: The left insertion rod is provided with a second annular groove, a reverse shaft clamp is sleeved in the second groove, and the right side surface of the convex ring abuts against the reverse shaft clamp.

7. The connection sleeve for quick docking of a center rod according to claim 1, characterized in that: An annular anti-slip groove is arranged on the outer side of the sleeve.

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