Rope head fixing unit for automatic diamond bead stringing machine

Abstract

The invention belongs to the field of cutting equipment manufacturing, and relates to the production of diamond wire saws, and specifically refers to a rope head fixing unit for a diamond bead automatic threading machine, comprising a machine platform, wherein the rope head fixing unit comprises a rope head guiding mechanism and a clamping mechanism, wherein the rope head guiding mechanism comprises a wheel frame and a positioning wheel group, wherein the positioning wheel group comprises two pulleys and a tension spring arranged in parallel, wherein grooves are arranged around the pulleys, wherein the wheel axles of the two pulleys are connected by a tension spring, wherein the grooves of the two pulleys are combined to form a wire rope passing hole, wherein no less than two positioning wheel groups are arranged in parallel front and back on the wheel frame, wherein the central axes of the wire rope passing holes of all the positioning wheel groups are on the same horizontal line, wherein the clamping mechanism comprises a clamping mechanism and a driving mechanism, wherein the clamping mechanism is located on the central axis of the wire rope passing hole, wherein the invention has a simple structure, good effect, and can ensure the stability of the position of the end of the wire rope; can ensure the stable pushing of the hollow push rod; and ensure the continuous operation of the threading machine.

Description

Technical Field

[0001] The invention belongs to the field of cutting equipment manufacturing, relates to the production of a diamond wire saw, and specifically refers to a wire head fixing unit for a diamond bead automatic threading machine. Background Art

[0002] In industrial production, diamond wire saws are often used to cut hard materials of irregular shapes. The main structure of a diamond wire saw is composed of a steel wire and diamond beads connected to the steel wire. The prior art of making a diamond wire saw is usually to manually insert the diamond beads one by one from the end of the steel wire, and then use a bead-pushing device (see Chinese utility model patent CN210988577U-a bead-pushing disk) to push the diamond beads on the end to the other end until the entire steel wire is threaded with a specified number of diamond beads. There are also mechanical devices that complete the automatic stringing of beads. The existing automatic stringing machine usually includes a bead supply unit, a bead pushing unit, and a rope end fixing unit. Its general working principle is: the rope end fixing unit is arranged in front of the bead pushing unit, the rope end fixing unit fixes the end of the wire rope, the bead supply unit transports the diamond beads to the bead pushing unit, and the bead pushing unit is usually provided with a hollow push rod that moves forward and backward. The front end of the hollow push rod pushes the rear end of the diamond beads and moves forward, so that the diamond bead hole is covered with the wire rope end. When the hollow push rod is pushed forward, the opposite wire rope end The head enters into the hollow push rod, the hollow push rod pushes the diamond beads to the front of the rope head fixing unit and then retreats. The bead-pushing device is arranged in front of the rope head fixing unit of the automatic bead-threading machine, and pushes one or several diamond beads to the other end of the wire rope until all the diamond beads are threaded on the wire rope. The internal structure of the rope head fixing unit of the existing automatic bead-threading machine is not reasonable enough. The wire rope is prone to swing when the push rod pushes the beads, resulting in the inability to push the beads. The wire rope that is threaded is prone to move from the threading end to the other end, resulting in the inability of the whole machine to work continuously and other faults. Summary of the invention

[0003] The present invention aims to provide a rope end fixing unit for a diamond bead automatic threading machine which has a simple structure, good threading effect and stable operation.

[0004] The technical solution to achieve the above purpose is:

[0005] A rope head fixing unit for a diamond bead automatic threading machine comprises a machine platform, the rope head fixing unit comprises a rope head guiding mechanism and a clamping mechanism arranged in front of the rope head guiding mechanism, the rope head guiding mechanism comprises a wheel frame arranged on the machine platform and a positioning wheel group arranged on the wheel frame, the positioning wheel group comprises two pulleys arranged in parallel and a tension spring, grooves are arranged around the pulleys, the axles of the two pulleys are respectively installed in the bar holes on the wheel frame, the axles of the two pulleys are connected by the tension spring, and under the action of the tension spring, the axles of the two pulleys move in the bar holes Until the edges of the two positioning wheels come together, the grooves of the two pulleys are combined to form a wire rope through hole, and no less than two positioning wheel groups are arranged in parallel on the wheel frame. The central axes of the wire rope through holes of all positioning wheel groups are on the same horizontal line. The clamp mechanism includes a clamp and a clamp seat and a driving mechanism installed on the machine table. The driving mechanism includes a clamping driving mechanism. The clamp is connected to the output of the clamping driving mechanism and is installed on the clamp seat. The clamp completes the opening and closing action under the action of the clamping driving mechanism. The clamp is on the central axis of the wire rope through hole.

[0006] During operation, the wire rope passes through the clamp, passes through the wire rope through hole and is clamped and fixed by the two pulleys of the positioning wheel group, and the end of the wire rope is facing the center of the hole of the diamond bead.

[0007] Furthermore, the driving mechanism also includes a linear driving mechanism, and the clamp seat is installed on the machine platform through the linear driving mechanism. The clamp seat can move forward and backward under the action of the linear driving mechanism.

[0008] Furthermore, two positioning wheel sets are arranged in parallel at the front and rear of the wheel frame, and the pulley shaft of the front positioning wheel set is perpendicular to the pulley shaft of the rear positioning wheel set.

[0009] Furthermore, the pulley shaft of the front or rear positioning wheel set is arranged vertically.

[0010] Optionally, two positioning wheel sets are arranged in parallel front and rear on the wheel frame, and the pulley shafts of the front and rear positioning wheel sets are parallel to each other.

[0011] Furthermore, the pulley shafts of the front and rear positioning wheel sets are parallel to the horizontal plane.

[0012] Furthermore, the clamping drive mechanism is a finger cylinder.

[0013] Furthermore, the linear drive mechanisms are all cylinder slide rail driving mechanisms.

[0014] When the rope head fixing unit for the automatic diamond beading machine is used, the bead-pulling device is arranged in front of the clamp mechanism, the bead-pushing unit is arranged behind the rope head guiding mechanism, the hollow push rod pushes the diamond beads to move forward, the diamond bead hole is inserted into the end of the wire rope, and as the hollow push rod moves forward, the wire rope head relatively enters the hollow push rod, and the hollow push rod continues to push the diamond beads sleeved on the wire rope forward, and the diamond beads enter the first positioning wheel group at the rear of the wheel frame, and the two pulleys overcome the tension of the tension spring and are stretched apart by the diamond beads, and the pulley of the rear positioning wheel group keeps clamping the wire rope, thereby ensuring the stability of the wire rope and not swaying, and the diamond beads continue to move forward under the action of the hollow push rod. , the diamond beads again open the two pulleys of the next positioning wheel group. After the diamond beads pass through the positioning wheel group, the two pulleys of the positioning wheel group move closer under the action of the tension spring, and the outer wall of the hollow push rod is clamped by the grooves of the two pulleys, ensuring that the hollow push rod is pushed forward smoothly; when the hollow push rod pushes the diamond beads forward, the clamping drive mechanism drives the clamp to open, and the diamond beads pass through the middle of the clamp under the action of the hollow push rod. After the diamond beads continue to move forward and reach the front of the clamp, the hollow push rod retreats back to its position, and the wire rope is exposed relatively. The two pulleys of the positioning wheel group move closer under the action of the tension spring, and the two pulleys clamp the wire rope in the wire rope passing hole; enter the next diamond bead threading process. After the hollow push rod has threaded a specified number (such as 5) of diamond beads and reaches the front of the clamp, the clamping drive mechanism drives the clamp to clamp the wire rope after the hollow push rod returns to its position; the bead-moving device moves the diamond beads in front of the clamp toward the other end of the wire rope, and other parts of the diamond bead automatic threading machine pause. After the bead-moving device finishes moving, the threading machine starts threading the next diamond bead.

[0015] When the rope end fixing unit equipped with a linear drive mechanism is working, after the clamping drive mechanism drives the clamp to open, the linear drive mechanism drives the clamp seat to drive the clamp to move forward about 1 cm; after the hollow push rod withdraws from the clamp, the clamping drive mechanism drives the clamp to clamp the wire rope, and the linear drive mechanism drives the clamp seat to drive the clamp to retreat, and the clamp straightens the wire rope. The force with which the clamp clamps the wire rope is based on straightening the wire rope, and the clamp stops moving after returning to its original position.

[0016] The rope end fixing unit of the present invention has a simple structure and good effect, and has all or part of the following beneficial effects: first, the front and rear positioning wheel groups can ensure the stability of the position of the wire rope end during the bead stringing and rope threading process, and prevent the rope head from deviating from the moving trajectory of the diamond beads so that the diamond beads cannot be smoothly inserted into the wire rope head; second, the clamping of the front and rear positioning wheel groups can ensure the smooth pushing of the hollow push rod; third, the forward and backward movement of the clamp can straighten the wire rope, overcome the sagging or bending of the wire rope during rope threading and bead pulling, and return the wire rope end to ensure that the position of the wire rope end is consistent, thereby ensuring the continuous operation of the bead stringing machine.

[0017] The "front" and "rear" mentioned in the present invention are based on the direction in which the hollow push rod pushes the diamond beads. Regarding the travel size of the clamp in the front and rear directions and the clamping force of the clamp, those skilled in the art can adjust them according to the degree of sagging or bending of the wire rope during work. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the use status of the first embodiment of the present invention;

[0019] Figure 2 This is a schematic structural diagram of a rope end guiding mechanism according to Embodiment 1 of the present invention;

[0020] Figure 3 This is a front structural schematic diagram of a rope end guiding mechanism according to Embodiment 1 of the present invention;

[0021] Figure 4 This is a schematic diagram of the working state of the rope end fixing unit according to the first embodiment of the present invention;

[0022] Figure 5 The figure is a schematic diagram of the structure of the rope guide mechanism according to the second embodiment of the present invention. DETAILED DESCRIPTION

[0023] The present invention is described in detail below in conjunction with the embodiments. The "left" and "right" described in the following embodiments are based on the rope head fixing unit and the ball pushing unit as a reference. It should be noted that the following knowledge is clear to those skilled in the art: according to the description of the working process in the technical solution and the following embodiment description and in comparison with the drawings, corresponding industrial controllers and sensors are set to control the actions of various components, so the description of the relevant circuits is omitted in the embodiments.

[0024] See also Figures 1 to 4 , Embodiment 1,

[0025] The rope end fixing unit 4 of the present embodiment is arranged on a diamond bead automatic stringing machine, which comprises a bead supply unit 2, a bead pushing unit 3, and a rope end fixing unit 4 installed on a machine platform 1. The rope end fixing unit 4 is in front of the bead pushing unit 3, and the bead supply unit 3 is on the left side of the bead pushing unit 3.

[0026] The bead supply unit 2 includes a vibrating plate feeder (not shown) and a conveying pipe 2-1. The input end of the conveying pipe 2-1 is connected to the output port of the vibrating plate feeder. When working, the diamond beads 9 enter the conveying pipe 2-1 one by one under the action of the vibrating plate feeder, and are output one by one from the output end of the conveying pipe 2-1.

[0027] The bead pushing unit 3 includes a bead straightening device 3-1, a hollow push rod 3-2 and a first linear drive mechanism. The rear end of the hollow push rod 3-2 is connected to the output of the first linear drive mechanism. The hollow push rod 3-2 can move forward and backward under the action of the first linear drive mechanism; the bead straightening device 3-1 includes a support 3-10, a straightening cover 3-11 and a second linear drive mechanism. The support 3-10 is fixed on the machine 1. The second linear drive mechanism is a sliding cylinder that moves up and down. The top surface of the support 3-10 is in front of the front end surface of the hollow push rod 3-2. Below, the left side of the top surface of the support platform 3-10 is connected to the output port of the conveying pipeline 2-1, and a limit plate 3-14 is provided on the right side of the top surface of the support platform 3-10. The regulating cover 3-11 is arranged directly above the support platform 3-10. The bottom surface of the regulating cover 3-11 is provided with a concave first arc groove, and the inner diameter of the first arc groove surface is adapted to the outer diameter of the diamond bead 9. The length direction of the first arc groove is parallel to the hollow push rod 3-2. In this embodiment, the top surface of the support platform 3-10 is provided with a concave second arc groove, and the inner diameter of the second arc groove surface is adapted to the outer diameter of the diamond bead 9. The outer diameter is adapted, the length direction of the second arc groove is parallel to the hollow push rod 3-2, the second arc groove surface is opposite to the first arc groove surface, the first and second arc groove surfaces cooperate to better regulate the posture of the diamond beads 9 and also help to improve the stability of the diamond beads 9 during advancement; the bead regulating device 3-1 also includes two mutually parallel vertical baffles 3-13, the two vertical baffles are respectively arranged at the front and rear of the support platform, and the vertical baffle 3-13 is below the regulating cover 3-11. In this embodiment, the regulating cover 3-11 and the vertical baffle 3- The right side of 13 is connected with the limit plate 3-12, and the limit plate 3-14 is connected with the slide cylinder 3-12. The space enclosed by the two vertical baffles 3-13 and the limit plate 3-14 is used to guide the diamond beads 9 from the conveying pipe 2-1 to the support 3-10 to prevent the beads from falling from the support 3-10. The limit plate 3-14 drives the regulating cover 3-11 and the vertical baffle 3-13 to move up and down synchronously under the action of the slide cylinder 3-12. After the vertical baffle 3-13 moves downward, it makes room for the hollow push rod 3-2 to move forward;

[0028] The rope end fixing unit 4 includes a rope end guiding mechanism 4-1 and a clamping mechanism 4-2 arranged in front of the rope end guiding mechanism 4-1, see Figure 2 and Figure 3The rope end guiding mechanism 4-1 includes a wheel frame 4-10 and a positioning wheel group 4-11 arranged on the wheel frame 4-10, the positioning wheel group includes two pulleys and a tension spring 4-11-1 arranged in parallel, and a groove is arranged around the pulley. The wheel axles of the two pulleys are respectively installed in the bar holes 4-10-1 on the wheel frame 4-10, and the wheel axles of the two pulleys are connected by a tension spring 4-11-1. Under the action of the tension spring 4-11-1, the wheel axles of the two pulleys move in the bar holes 4-10-1 until the edges of the two pulleys are close together, and the grooves of the two pulleys are combined to form a wire rope through hole 4-11-2. The number of positioning wheel groups 4-11 is two or more, ensuring that the wire rope through holes 4-11-2 arranged in parallel front and back form a determined straight line. In this embodiment, two positioning wheel groups 4-11 are arranged in parallel front and rear on the wheel frame 4-10, and the sliding of the front and rear positioning wheel groups The wheel shafts are parallel to the horizontal plane, and the central axes of the wire ropes of the two positioning wheel groups 4-11 through the holes 4-11-2 coincide with the central line of the hollow push rod 3-2; the clamp mechanism 4-2 includes a clamp 4-20, a clamp seat 4-21 and a third drive mechanism, the third drive mechanism includes a finger cylinder (not shown) and a third linear drive mechanism, the clamp 4-20 is connected to the output of the finger cylinder and is installed on the clamp seat 4-21, the clamp 4-20 is on the central line of the hollow push rod 3-2, the clamp seat 4-21 is connected to the output of the third linear drive mechanism, the clamp seat 4-21 can move forward and backward under the action of the third linear drive mechanism, the clamp 4-20 is driven by the clamp seat 4-21 to move forward and backward, and the drooping or bent wire rope 8 can be straightened to make the wire rope end return to its original position, so as to achieve the effect of keeping the distance between the wire rope end and the support platform 3-10 consistent each time the ball is pushed;

[0029] During operation, the steel wire rope 8 passes through the clamp 4-20, passes through the front and rear steel wire rope holes 4-11-2 and is clamped and fixed by the two pulleys of the positioning wheel group 4-11, and the end face of the steel wire rope faces the front end face of the hollow push rod 3-2. The diamond beads 9 come out of the conveying pipe 2-1 and arrive on the support platform 3-10. Under the action of the bead straightening device 3-1, the axial direction of the diamond beads coincides with the center line of the hollow push rod and is between the front end face of the hollow push rod and the end face of the steel wire rope;

[0030] In this embodiment, the first and third linear drive mechanisms are cylinder slide rail pushing mechanisms, including a cylinder 5, a slide rail 6 and a slide table 7. The slide rail 6 is arranged on the machine 1 in the front-to-back direction. The cylinder 5 drives the slide table 7 to move back and forth on the slide rail 6, and the driven object is connected to the slide table 7.

[0031] When this embodiment is used, the bead-moving device (not shown in the drawings) is arranged in front of the clamping mechanism 4-2.

[0032] See also Figure 5 , Embodiment 2,

[0033] This embodiment is different from the first embodiment in that the setting direction of the pulley shafts of the front and rear positioning wheel groups 4-11 in the rope end guiding mechanism 4-1, the method of use and other structures are the same as those in the first embodiment. In this embodiment, the pulley shaft of the front positioning wheel group 4-11 is vertically arranged, and the positioning wheel shaft of the rear positioning wheel group 4-11 is horizontally arranged. The central axis of the wire rope passing hole 4-11-2 of the two positioning wheel groups 4-11 coincides with the center line of the hollow push rod 3-2.

Claims

1. A rope fixing unit for a diamond bead automatic threading machine, comprising a machine platform, characterized in that the rope fixing unit comprises a rope guiding mechanism and a clamping mechanism arranged in front of the rope guiding mechanism, the rope guiding mechanism comprises a wheel frame arranged on the machine platform and a positioning wheel group arranged on the wheel frame, the positioning wheel group comprises two pulleys arranged in parallel and a tension spring, grooves are arranged around the pulleys, the axles of the two pulleys are respectively installed in the bar holes on the wheel frame, the axles of the two pulleys are connected by the tension spring, and under the action of the tension spring, the axles of the two pulleys are in the bar holes The two pulleys are connected to each other by a plurality of locating wheels, and the grooves of the two pulleys are combined to form a wire rope through hole. No less than two locating wheel groups are arranged in parallel on the wheel frame. The central axes of the wire rope through holes of all locating wheel groups are on the same horizontal line. The clamp mechanism includes a clamp and a clamp seat and a driving mechanism installed on the machine table. The driving mechanism includes a clamping driving mechanism. The clamp is connected to the output of the clamping driving mechanism and is installed on the clamp seat. The clamp completes the opening and closing action under the action of the clamping driving mechanism. The clamp is on the central axis of the wire rope through hole. During operation, the wire rope passes through the clamp, passes through the wire rope through hole and is clamped by the two pulleys of the positioning wheel group to be kept fixed, and the end of the wire rope is facing the center of the hole of the diamond bead.

2. The rope end fixing unit for the automatic diamond beading machine according to claim 1 is characterized in that: The driving mechanism also includes a linear driving mechanism, and the clamp seat is installed on the machine platform through the linear driving mechanism. The clamp seat can move forward and backward under the action of the linear driving mechanism.

3. The rope end fixing unit for the automatic diamond beading machine according to claim 1 or 2, characterized in that: Two positioning wheel sets are arranged in parallel at the front and rear of the wheel frame, and the pulley rotating shaft of the front positioning wheel set is perpendicular to the pulley rotating shaft of the rear positioning wheel set.

4. The rope end fixing unit for the automatic diamond beading machine according to claim 3 is characterized in that: The pulley shaft of the front or rear positioning wheel group is arranged vertically.

5. The rope end fixing unit for the automatic diamond bead stringing machine according to claim 1 or 2, characterized in that: Two positioning wheel sets are arranged in parallel front and back on the wheel frame, and the pulley shafts of the front and rear positioning wheel sets are parallel to each other.

6. The rope end fixing unit for the automatic diamond beading machine according to claim 5, characterized in that: The pulley shafts of the front and rear positioning wheel groups are parallel to the horizontal plane.

7. The rope end fixing unit for the automatic diamond bead stringing machine according to claim 1 or 2, characterized in that: The clamping drive mechanism is a finger cylinder.

8. The rope end fixing unit for the automatic diamond bead stringing machine according to claim 2, characterized in that: The linear drive mechanisms are all cylinder slide rail pushing mechanisms.

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