Material blocking and limiting device of screw thread rolling machine

Abstract

A material blocking and limiting device of a screw thread rolling machine comprises a machine table, a feeding assembly arranged on the machine table, a material blocking assembly arranged on one side of the feeding assembly, a material feeding rail and a limiting assembly arranged on one side of the material blocking assembly. The material blocking assembly comprises a rotating block, a second sliding block arranged on one side of the rotating block and a material blocking plate arranged on the second sliding block. The incoming material track comprises an inner side track and an outer side track. The limiting assembly comprises a limiting block and a limiting screw arranged on one side of the limiting block. According to the material blocking and limiting device of the screw thread rolling machine, before the material blocking plate collides with the outer side rail, the limiting screw preferentially collides with the limiting block, so that the moving stroke of the second sliding block is reduced, the limiting function is achieved, and the situation that the width of a channel between the inner side rail and the outer side rail is increased is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical equipment, in particular to a material blocking and limiting device for a screw thread rolling machine. Background Art

[0002] A thread rolling machine refers to two identical threads with the same thread rolling surface and the same helix angle as the thread of the bolt. When the thread rolling plates move relative to each other, the bolt blank between the two thread rolling plates is threaded. The thread rolling plates can complete the processing of a bolt thread once they go back and forth. The speed is quite high, and thread rolling is mostly used for small bolt processing. For example, Chinese patent CN201611035766.9 discloses a thread rolling machine, which is suitable for rolling threads on a blank so that the blank has threads. The thread rolling machine includes a machine base, a thread rolling device, a feeding device, and a motor unit. The thread rolling device is arranged on the machine base and includes a fixed tooth plate and a movable tooth plate spaced from the fixed tooth plate. The feeding device conveys the blank to the thread rolling device. The motor unit can drive the thread rolling device to operate, and includes a first motor and a second motor spaced from each other, a reducer connected to the second motor, and a clutch arranged between the first motor and the reducer. The motor unit is not easily damaged when the machine is inch-moving, and the blank will not be stuck between the fixed tooth plate and the movable tooth plate during the early trial rolling. However, the pusher on the device intermittently hits the side wall of the feed track, which will increase the gap of the feed track and affect production. Utility Model Content

[0003] In view of this, the utility model provides a material blocking and limiting device for a screw thread rolling machine to solve the above problems.

[0004] A material stop and limit device for a screw thread rolling machine, comprising a machine platform, a feed assembly arranged on the machine platform, a material stop assembly arranged on one side of the feed assembly, a material incoming track arranged on the material stop assembly, and a limit assembly arranged on one side of the material stop assembly. The material stop assembly comprises a rotating block, a second slider arranged on one side of the rotating block, and a material stop plate arranged on the second slider. The material incoming track comprises an inner track and an outer track arranged on one side of the inner track. The limit assembly comprises a limit block and a limit screw arranged on one side of the limit block. Two fixing screws are arranged on the limit block, and the distance between the two fixing screws is greater than the width of the second slider. The limit screw corresponds to the limit block and is fixedly screwed on the second slider. The initial distance between the limit block and the limit screw is less than the initial distance between the material stop plate and the outer track, and the distance between the limit screw and the limit block can be changed by rotating the limit screw.

[0005] Furthermore, the feeding assembly includes a knocking rod, an L-shaped swing arm arranged on one side of the knocking rod, a first slider arranged at one end of the L-shaped swing arm, and a feeding plate arranged on the first slider, and the middle section of the L-shaped swing arm is rotatably connected to the machine.

[0006] Furthermore, a protrusion is arranged on one side of the first sliding block close to the L-shaped swing arm, and a roller is arranged on one end of the L-shaped swing arm away from the knocking rod, and the roller abuts against the protrusion.

[0007] Furthermore, one end of the first sliding block away from the incoming material track has a first spring, one end of the first spring abuts against the first sliding block, and the other end of the first spring abuts against the machine platform.

[0008] Furthermore, an arc-shaped groove is provided on one side of the rotating block close to the second sliding block, and a pin is fixedly provided on the top of the second sliding block. The pin passes through the arc-shaped groove and can be movable in the arc-shaped groove.

[0009] Furthermore, a second spring is provided at one end of the second sliding block away from the incoming material track, one end of the second spring is in contact with the second sliding block, and the other end of the second spring is in contact with the machine platform.

[0010] Furthermore, the outer rail protrudes from the inner rail, and an end of the inner rail contacts a side gap of the baffle plate.

[0011] Compared with the prior art, the material stop and limit device for a screw thread rolling machine provided by the utility model reduces the movement stroke of the second slider by making the limit screw hit the limit block first before the material stop plate hits the outer rail, thereby achieving the limit function and avoiding the channel width between the inner and outer rails from becoming wider. The device can also change the distance between the limit screw and the limit block by rotating the limit screw, thereby adjusting the movement stroke of the second slider to adapt to the incoming rails of different specifications. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 The utility model is a schematic structural diagram of the material blocking and limiting device of the screw thread rolling machine.

[0013] Figure 2 for Figure 1 A partial structural schematic diagram of a material blocking and limiting device of a screw thread rolling machine. DETAILED DESCRIPTION

[0014] The following is a further detailed description of the specific embodiments of the present invention. It should be understood that the description of the embodiments of the present invention herein is not intended to limit the protection scope of the present invention.

[0015] like Figure 1 As shown, it is a schematic diagram of the structure of the material stop and limit device of the screw thread rolling machine provided by the utility model. The material stop and limit device of the screw thread rolling machine includes a machine platform 10, a feeding assembly 20 arranged on the machine platform 10, a material stop assembly 30 arranged on one side of the feeding assembly 20, a material incoming track 40 arranged on the material stop assembly 30, and a limit assembly 50 arranged on one side of the material stop assembly 30. It can be imagined that the material stop and limit device of the screw thread rolling machine also includes some other functional modules, such as a screw module, a power module, etc., which are technologies already known to those skilled in the art and will not be described one by one here.

[0016] The machine 10 is used to carry various module components. The shape of the machine 10 can be set according to actual needs and will not be described in detail here.

[0017] See also Figure 2 The feeding assembly 20 includes a knocking rod 21 , an L-shaped swing arm 22 disposed on one side of the knocking rod 21 , a first slider 23 disposed on one end of the L-shaped swing arm 22 , and a feeding plate 24 disposed on the first slider 23 .

[0018] One end of the knock rod 21 away from the L-shaped swing arm 22 swings back and forth under the drive of a driving source with a cam, so that the other end of the knock rod 21 can push the L-shaped swing arm 22 back and forth.

[0019] The middle section of the L-shaped swing arm 22 is rotatably connected to the machine platform 10 , so that under the back and forth push of the knock rod 21 , the end of the L-shaped swing arm 22 away from the knock rod 21 swings back and forth.

[0020] A protrusion 25 is provided on the side of the first slider 23 close to the L-shaped swing arm 22, and a roller 26 is provided on the end of the L-shaped swing arm 22 away from the knocking rod 21, and the roller 26 abuts against the protrusion 25. In this way, when the L-shaped swing arm 22 swings back and forth, the protrusion 25 is pushed by the roller 26, and the first slider 23 is driven to move. The end of the first slider 23 away from the incoming material track 40 has a first spring 27, one end of the first spring 27 abuts against the first slider 23, and the other end abuts against the machine 10, so that the first slider 23 can reciprocate toward the incoming material track 40 under the push of the L-shaped swing arm 22 and the elastic potential energy of the first spring 27.

[0021] The first sliding block 23 is also provided with a push rod 28, and the push rod 28 can cooperate with the material blocking assembly 30 to perform a material blocking operation, and the specific cooperation will be described below.

[0022] The feeding plate 24 is fixedly connected to one end of the first slider 23 away from the first spring 27, and the other end is located at the exit of the incoming track 40. Driven by the first slider 23, the feeding plate 24 can reciprocate at the exit of the incoming track 40, thereby playing a feeding role.

[0023] The material blocking assembly 30 includes a rotating block 31 , a second sliding block 32 disposed on one side of the rotating block 31 , and a material blocking plate 33 disposed on the second sliding block 32 .

[0024] The rotating block 31 is located between the first and second sliders 23 and 32, and the middle section of the rotating block 31 is rotatably disposed on the machine platform 10. A stop column 34 is disposed on one side of the rotating block 31 close to the first slider 23, and the stop column 34 corresponds to the push rod 28, so that when the first spring 27 releases its elastic potential energy, the push rod 28 can push the stop column 34, thereby causing the rotating block 31 to rotate around its middle section.

[0025] An arc groove 35 is provided on one side of the rotating block 31 close to the second sliding block 32, and a pin 36 is fixedly provided on the top of the second sliding block 32. The pin 36 passes through the arc groove 35 and can move in the arc groove 35. In this way, when the rotating block 31 rotates, the arc groove 35 can change the position of the pin 36 along the length direction of the second sliding block 32, thereby driving the second sliding block 32 to move.

[0026] The second slider 32 has a second spring 37 at one end away from the incoming material track 40, one end of the second spring 37 abuts against the second slider 32, and the other end abuts against the machine 10. In this way, the second slider 32 can reciprocate toward the incoming material track 40 under the drive of the rotating block 31 and the elastic potential energy of the second spring 37.

[0027] The material blocking plate 33 is fixedly connected to one end of the second slider 32 away from the second spring 37, and the other end is located at the exit of the incoming material track 40. Driven by the second slider 32, the material blocking plate 33 can reciprocate at the exit of the incoming material track 40, thereby playing a material blocking role.

[0028] The incoming track 40 includes an inner track 41 and an outer track 42 disposed on one side of the inner track 41 .

[0029] There is a passage for screws to pass through between the inner and outer rails 41 and 42. At the exit position of the incoming material rail 40, the outer rail 42 protrudes from the inner rail 41. The end of the inner rail 41 contacts a side gap of the baffle plate 33.

[0030] The limiting assembly 50 includes a limiting block 51 and a limiting screw 52 disposed on one side of the limiting block 51 .

[0031] The limit block 51 is provided with two fixing screws 53, and the limit block 51 is fixedly provided on the machine platform 10 by the two fixing screws 53. The distance between the two fixing screws 53 is greater than the width of the second slider 32, thereby preventing the limit block 51 from affecting the movement of the second slider 32.

[0032] The limit screw 52 corresponds to the limit block 51 and is fixedly screwed on the second slider 32, so that the limit screw 52 can move with the movement of the second slider 32. The initial distance between the limit block 51 and the limit screw 52 is smaller than the initial distance between the baffle plate 33 and the outer rail 42, so that before the baffle plate 33 hits the outer rail 42, the limit screw 42 hits the limit block 51, thereby stopping the movement of the baffle plate 33, reducing the moving stroke of the second slider 32, achieving the limit function, and preventing the baffle plate 33 from hitting the outer rail 41, resulting in a larger channel width between the inner and outer rails 41, 42.

[0033] The limiting assembly 50 can also change the distance between the limiting screw 52 and the limiting block 51 by rotating the limiting screw 52 , thereby adjusting the moving stroke of the second sliding block 32 to adapt to the incoming material tracks 50 of different specifications.

[0034] Compared with the prior art, the material stop and limit device for a screw thread rolling machine provided by the utility model reduces the movement stroke of the second slider 32 by making the stop screw 42 hit the stop block 51 first before the stop plate 33 hits the outer rail 42, thereby achieving the limit function and avoiding the increase in the channel width between the inner and outer rails 41 and 42. The device can also change the distance between the stop screw 52 and the stop block 51 by rotating the stop screw 52, ​​thereby adjusting the movement stroke of the second slider 32 to adapt to the incoming rails 50 of different specifications.

[0035] The above are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Any modification, equivalent substitution or improvement within the spirit of the present invention are included in the scope of the claims of the present invention.

Claims

1. A material stop and limit device for a screw thread rolling machine, characterized in that: The material stopping and limiting device of the screw thread rolling machine includes a machine platform, a feeding assembly arranged on the machine platform, a material stopping assembly arranged on one side of the feeding assembly, an incoming material track arranged on the material stopping assembly, and a limiting assembly arranged on one side of the material stopping assembly, the material stopping assembly includes a rotating block, a second slider arranged on one side of the rotating block, and a material stopping plate arranged on the second slider, the incoming material track includes an inner track and an outer track arranged on one side of the inner track, the limiting assembly includes a limiting block and a limiting screw arranged on one side of the limiting block, two fixing screws are arranged on the limiting block, the distance between the two fixing screws is greater than the width of the second slider, the limiting screw corresponds to the limiting block and is fixedly screwed on the second slider, the initial distance between the limiting block and the limiting screw is less than the initial distance between the material stopping plate and the outer track, and the distance between the limiting screw and the limiting block can be changed by rotating the limiting screw.

2. The material stop and limit device for a screw thread rolling machine according to claim 1, characterized in that: The feeding assembly includes a knocking rod, an L-shaped swing arm arranged on one side of the knocking rod, a first slider arranged at one end of the L-shaped swing arm, and a feeding plate arranged on the first slider, and the middle section of the L-shaped swing arm is rotatably connected to the machine table.

3. The material blocking and limiting device for a screw thread rolling machine according to claim 2, characterized in that: A protrusion is arranged on one side of the first sliding block close to the L-shaped swing arm, and a roller is arranged on one end of the L-shaped swing arm away from the knocking rod, and the roller abuts against the protrusion.

4. The material stop and limit device for a screw thread rolling machine according to claim 2, characterized in that: The end of the first sliding block away from the incoming material track has a first spring, one end of the first spring abuts against the first sliding block, and the other end of the first spring abuts against the machine platform.

5. The material blocking and limiting device for a screw thread rolling machine according to claim 1, characterized in that: An arc groove is formed on one side of the rotating block close to the second sliding block, and a pin is fixedly provided on the top of the second sliding block. The pin passes through the arc groove and can move in the arc groove.

6. The material blocking and limiting device for a screw thread rolling machine according to claim 1, characterized in that: The end of the second sliding block away from the incoming material track is provided with a second spring, one end of the second spring is in contact with the second sliding block, and the other end of the second spring is in contact with the machine platform.

7. The material blocking and limiting device for a screw thread rolling machine according to claim 1, characterized in that: The outer rail protrudes from the inner rail, and an end of the inner rail contacts a side gap of the baffle plate.

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