Break knife auxiliary avoidance mechanism

Abstract

The application discloses a material cutting knife auxiliary avoiding mechanism, which comprises a material cutting knife rod, an eccentric wheel arranged at the tail end of the material cutting knife rod, an eccentric wheel rotating shaft connected with the eccentric wheel, and an auxiliary plate arranged on the eccentric wheel. The eccentric wheel rotating shaft drives the eccentric wheel to rotate and pushes the material cutting knife rod away from the eccentric wheel rotating shaft. The eccentric wheel is provided with an arc-shaped guide block, the material cutting knife rod is provided with a traction block matched with the arc-shaped guide block, and the arc-shaped guide block is used for guiding the traction block to make the material cutting knife rod close to the eccentric wheel rotating shaft after the eccentric wheel pushes the material cutting knife rod away from the eccentric wheel rotating shaft. The arc-shaped guide block forces the material cutting knife to be displaced backward to avoid the spring failure, and the stability and reliability of the equipment are improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of steel ball processing, and particularly relates to a broken material knife auxiliary avoiding mechanism. BACKGROUND

[0002] The steel ball blank feeding mechanism of the steel ball radial stamping hot forming device disclosed in CN111167942A comprises a broken material box, a broken material pushing sliding block guiding roller seat, a broken material pushing sliding block guiding roller, a broken material pushing sliding block, a broken material knife rod, a broken material knife, a spring pull rod device and a traction connecting rod device. The broken material pushing sliding block has a gradually changing guiding arc surface. The traction connecting rod device pushes the broken material pushing sliding block to slide in the broken material box (the pushing sliding block guiding sliding strip forms a sliding pair with the broken material box at a position corresponding to the sliding block guiding sliding strip groove). The broken material pushing sliding block is inserted between the broken material box and the broken material pushing sliding block guiding roller. The gradually changing guiding arc surface of the broken material pushing sliding block pushes the broken material pushing sliding block guiding roller, so that the broken material pushing sliding block guiding roller seat slides in the broken material box (the upper part of the broken material pushing sliding block guiding roller seat forms a sliding pair with the surface of the roller seat guiding pressing frame facing downward on one side), so that the broken material knife is cut off at the steel blank introduction hole of the heated steel round bar.

[0003] When the steel blank is cut off, the traction connecting rod device drives the broken material pushing sliding block to be separated from the broken material box and the broken material pushing sliding block guiding roller. When the broken material pushing sliding block guiding roller seat is separated from the broken material pushing sliding block, the spring pull rod of the spring pull rod device is reset under the action of the roller reset spring force, so that the broken material knife is pulled back to avoid displacement, so that the stamping hemispherical mold radial movement driving mechanism completes the steel ball stamping action. At the same time, the broken material knife which avoids displacement enters the next working cycle to continuously cut off the steel blank.

[0004] If the broken material knife does not timely avoid displacement backward, the stamping hemispherical mold radial movement driving mechanism will collide with the broken material knife, which affects the steel ball stamping forming effect. In severe cases, the steel ball forming working cycle will be affected, and the equipment will be disabled.

[0005] The elasticity of the spring is determined by the properties of its material, and the temperature has a great influence on the properties of the material. When the temperature of the spring rises, the molecular motion in the spring material is strengthened, the structure of the material changes, and the elasticity of the spring decreases. Especially when the material is affected by high temperature, the structure changes obviously, and even plastic deformation may occur, resulting in loss of elasticity of the spring.

[0006] The reset avoidance of the above-mentioned cutting knife mainly relies on the action force of the roller reset spring, and since the steel round bar needs to be heated to a red-hot state to be sent into the radial stamping hot forming device for cutting, stamping and other processes, with the increase of the running time of the equipment, the roller reset spring is heated and the elasticity decreases, resulting in the stopping phenomenon of the cutting knife, which cannot be displaced backward in time to avoid, and further causes the collision between the radial movement driving mechanism of the stamping hemisphere die and the cutting knife, affecting the stamping forming effect of the steel ball. SUMMARY

[0007] The purpose of the present application is to provide a cutting knife auxiliary avoidance mechanism which can make the cutting knife forced to avoid and avoid affecting the stamping forming of the steel ball.

[0008] In order to achieve the above technical purpose, the technical scheme of the present application is:

[0009] The cutting knife auxiliary avoidance mechanism comprises a cutting knife rod, a cutting knife slide seat is arranged in cooperation with the cutting knife rod, and the cutting knife rod slides back and forth along the cutting knife slide seat; an eccentric wheel is arranged at the tail end of the cutting knife rod, the eccentric wheel is connected with an eccentric wheel shaft, the eccentric wheel shaft drives the eccentric wheel to rotate, the eccentric wheel pushes the cutting knife rod to slide along the cutting knife slide seat to the side away from the eccentric wheel shaft, and the cutting knife completes the cutting action forward (the cutting knife is away from the eccentric wheel shaft).

[0010] An auxiliary plate is arranged on the convex part of the eccentric wheel, the auxiliary plate is provided with an arc-shaped guide block, the cutting knife rod is provided with a traction block used in cooperation with the arc-shaped guide block, after the eccentric wheel pushes the cutting knife rod to slide to the side away from the eccentric wheel shaft, the arc-shaped guide block is used to guide the traction block, so that the cutting knife rod slides along the cutting knife slide seat to the side of the eccentric wheel shaft, and the cutting knife is displaced backward (the cutting knife is close to the eccentric wheel shaft) to avoid.

[0011] In use, the eccentric wheel shaft drives the eccentric wheel to rotate, when the convex part of the eccentric wheel contacts the tail end of the cutting knife rod, the cutting knife rod is pushed away from the eccentric wheel shaft, so that the cutting knife at the front end of the cutting knife rod completes the cutting action. When the tail end of the cutting knife rod gets rid of the forward thrust of the eccentric wheel after the cutting knife rod slides forward to the position, the traction block is located between the arc-shaped guide block and the eccentric wheel and contacts the arc-shaped guide block, the eccentric wheel continues to rotate, the arc-shaped guide block abuts against the traction block, and the cutting knife rod is forced to be close to the eccentric wheel shaft, so that the cutting knife is forced to slide backward to avoid.

[0012] The auxiliary plate includes a left auxiliary plate and a right auxiliary plate, which are respectively disposed on both sides of the eccentric wheel. Between the left and right auxiliary plates, the left auxiliary plate is provided with a left arc-shaped guide block, and the right auxiliary plate is provided with a right arc-shaped guide block. The left and right arc-shaped guide blocks are symmetrically arranged. The left arc-shaped guide block is fitted with a left traction block, and the right arc-shaped guide block is fitted with a right traction block. The left and right traction blocks are respectively located on both sides of the material cutting blade rod, and the left and right traction blocks are symmetrically arranged.

[0013] The material cutter bar is equipped with a spring baffle. A spring is installed between the spring baffle and the material cutter slide. After the eccentric wheel pushes the material cutter bar away from the eccentric wheel axle, the spring is used to reset the material cutter bar. In use, when the eccentric wheel pushes the material cutter bar forward, the spring deforms under force. When the material cutter bar is freed from the eccentric wheel's push, the spring resets and pushes the spring baffle, causing the material cutter bar to slide back to the eccentric wheel axle.

[0014] The spring baffle is located between the cutting blade slide and the eccentric wheel. The spring is fitted on the spring shaft, which is connected to the cutting blade slide. The spring baffle has a shaft hole through which the spring shaft passes.

[0015] The guiding stroke of the arc-shaped guide block is set according to the backward avoidance stroke of the cutting blade rod. After the cutting blade slides backward, the traction block disengages from the arc-shaped guide block, and the spring continues to drive the cutting blade to slide backward and reset, and then the next working cycle begins.

[0016] The material cutter slide block includes a slide groove, in which a slider is fitted. The slider is connected to the slider groove of the material cutter rod, and the material cutter rod drives the slider to slide back and forth along the slide groove.

[0017] The cutting blade is provided at the front end of the cutting blade rod.

[0018] The cutting blade rod is equipped with a transition wheel at its tail end, and the eccentric wheel pushes the cutting blade rod to slide through the transition wheel. The transition wheel acts as a buffer between the eccentric wheel and the cutting blade rod, reducing wear and improving transmission efficiency.

[0019] The eccentric wheel axle is connected to a power device that drives the eccentric wheel axle to rotate.

[0020] This invention uses an arc-shaped guide block to force the cutting blade to move backward, thus avoiding spring failure and improving the stability and reliability of the equipment. Attached Figure Description

[0021] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0022] Fig. 1 This is a schematic diagram of the structure of the present invention.

[0023] Fig. 2 This is a schematic diagram of the eccentric wheel and auxiliary traction structure of the present invention.

[0024] Fig. 3 This is a schematic diagram of the tail end structure of the material cutting blade rod of the present invention. Detailed Implementation

[0025] like Figs. 1-3 As shown, the material cutter auxiliary avoidance mechanism includes a material cutter bar 1, which is equipped with a material cutter slide block. The material cutter slide block includes a slider groove 21, in which a slider 22 is fitted. The slider 22 is connected to the slider groove of the material cutter bar 1, and the material cutter bar 1 drives the slider 22 to slide back and forth along the slider groove 21.

[0026] The cutting blade 1 has a cutting blade 11 at its front end and a transition wheel 12 and an eccentric wheel 4 at its rear end. The transition wheel 12 is mounted on the cutting blade 1. The eccentric wheel 4 is connected to an eccentric wheel shaft 42. The eccentric wheel shaft 42 is rotatably connected to a shaft seat. The eccentric wheel shaft 42 is connected to a power device that drives the eccentric wheel shaft 42 to rotate. The power device drives the eccentric wheel shaft 42 to rotate on the shaft seat. The eccentric wheel shaft 42 drives the eccentric wheel 4 to rotate. The protrusion 41 of the eccentric wheel 4 pushes the transition wheel 12, causing the cutting blade 1 to slide along the cutting blade slide block away from the eccentric wheel shaft 42, thus enabling the cutting blade 11 to move forward (away from the eccentric wheel shaft 42) and complete the cutting action.

[0027] The cutting blade rod 1 is equipped with a spring baffle 3, which is located between the slider groove 21 and the transition wheel 4. Four springs 4 are arranged between the spring baffle 3 and the slider groove 21. The four springs 4 are respectively fitted on four spring shafts 41, which are evenly distributed around the cutting blade rod 1. The spring shafts 41 are all connected to the slider groove 21. The spring baffle 3 is provided with four shaft holes 31 for the four spring shafts 41 to pass through.

[0028] In operation, the power unit drives the eccentric wheel shaft 42 to rotate, which in turn drives the eccentric wheel 4 to rotate. The protrusion 41 of the eccentric wheel 4 pushes the transition wheel 12, causing the cutting blade rod 1 to slide along the cutting blade slide block away from the eccentric wheel shaft 42. During this process, the spring 4 deforms under force. When the transition wheel 12 disengages from the protrusion 41, the cutting blade rod 1 disengages from the eccentric wheel 4, and the spring 4 deforms and resets, pushing the spring baffle 3. This causes the cutting blade rod 1 to slide along the slider groove 21 towards the eccentric wheel shaft 42, thus moving the cutting blade 11 backward (closer to the eccentric wheel shaft 42) to begin the next working cycle.

[0029] To prevent the spring 4 from losing elasticity and causing the cutting blade to stop and fail to move backward in time to avoid obstacles, an auxiliary plate is provided on the protrusion 41 of the eccentric wheel 4. The auxiliary plate includes a left auxiliary plate 5 and a right auxiliary plate 6, which are respectively located on both sides of the protrusion 41 of the eccentric wheel. Between the left auxiliary plate 5 and the right auxiliary plate 6, the left auxiliary plate 5 is provided with a left arc-shaped guide block 51, and the right auxiliary plate 6 is provided with a right arc-shaped guide block 61. The left arc-shaped guide blocks 51 and 61 are symmetrically arranged, and a gap is provided between the left arc-shaped guide blocks 51 and 61 to allow the cutting blade shank 1 to pass through.

[0030] The cutting blade rod 1 is provided with a traction block at its end. The traction block includes a left traction block 71 and a right traction block 72. The left traction block 71 and the right traction block 72 are symmetrically arranged on both sides of the cutting blade rod 1. The left traction block 71 is used in conjunction with the left arc-shaped guide block 51, and the right traction block 72 is used in conjunction with the right arc-shaped guide block 61.

[0031] In use, after the cutting blade rod 1 slides forward into position, when the transition wheel 12 disengages from the thrust of the protrusion 41, the traction blocks 71 and 72 are respectively located between the arc-shaped guide blocks 51 and 61 and the eccentric wheel protrusion 41, and are in contact with the arc-shaped guide blocks 51 and 61. The eccentric wheel 4 continues to rotate, causing the arc-shaped guide blocks 71 and 72 to press against the guide traction blocks 51 and 61, forcing the cutting blade rod 1 to slide backward, thus achieving forced backward avoidance of the cutting blade 11.

[0032] The guiding stroke of the arc-shaped guide blocks 51 and 61 is set according to the backward avoidance stroke of the cutting blade rod 1. After the cutting blade 11 slides backward to avoid, the traction block disengages from the guidance of the arc-shaped guide block, and the spring continues to drive the cutting blade to slide backward to reset, and then the next working cycle begins.

[0033] This embodiment uses an arc-shaped guide block to force the cutting blade to move backward, thus avoiding spring failure and improving the stability and reliability of the equipment.

[0034] The above embodiments do not limit the present invention in any way. All technical solutions obtained by equivalent substitution or equivalent transformation fall within the protection scope of the present invention.

Claims

1. A material cutting blade auxiliary avoidance mechanism, characterized in that: The device includes a material cutting cutter rod, with an eccentric wheel at its tail end. The eccentric wheel is connected to an eccentric wheel shaft, which drives the eccentric wheel to rotate. The eccentric wheel pushes the material cutting cutter rod away from the eccentric wheel shaft. The eccentric wheel is equipped with an auxiliary plate, which has an arc-shaped guide block. The material cutting cutter rod is equipped with a traction block that works in conjunction with the arc-shaped guide block. After the eccentric wheel pushes the material cutting cutter rod away from the eccentric wheel shaft, the arc-shaped guide block guides the traction block, causing the material cutting cutter rod to move closer to the eccentric wheel shaft. When the cutting blade bar breaks free from the thrust of the eccentric wheel, the traction block contacts the arc-shaped guide block. The eccentric wheel, which continues to rotate, causes the arc-shaped guide block to press against the guide traction block, forcing the cutting blade to make a forced avoidance. The guiding stroke of the arc-shaped guide block is set according to the avoidance stroke of the cutting blade rod. After the cutting blade is forcibly avoided, the traction block disengages from the guide of the arc-shaped guide block.

2. The material cutting blade auxiliary avoidance mechanism according to claim 1, characterized in that: The material cutting blade rod is equipped with a material cutting blade slide block, and the material cutting blade rod slides back and forth along the material cutting blade slide block.

3. The material cutting blade auxiliary avoidance mechanism according to claim 2, characterized in that: The cutting blade rod is equipped with a spring baffle, and a spring is provided between the spring baffle and the cutting blade slide. After the eccentric wheel pushes the cutting blade rod away from the eccentric wheel axle, the spring is used to reset the cutting blade rod.

4. The material cutting blade auxiliary avoidance mechanism according to claim 3, characterized in that: The spring baffle is located between the cutting blade slide and the eccentric wheel. The spring is fitted on the spring shaft, which is connected to the cutting blade slide. The spring baffle has a shaft hole through which the spring shaft passes.

5. The material cutting blade auxiliary avoidance mechanism according to claim 2, characterized in that: The material cutter slide block includes a slide groove, in which a slider is fitted. The slider is connected to the slider groove of the material cutter rod, and the material cutter rod drives the slider to slide back and forth along the slide groove.

6. The material cutting blade auxiliary avoidance mechanism according to claim 1, characterized in that: The cutting blade rod is equipped with a transition wheel at its tail end, and the eccentric wheel pushes the cutting blade rod through the transition wheel.

7. The material cutting blade auxiliary avoidance mechanism according to claim 1, characterized in that: The auxiliary plate includes a left auxiliary plate and a right auxiliary plate, which are respectively disposed on both sides of the eccentric wheel. Between the left and right auxiliary plates, the left auxiliary plate is provided with a left arc-shaped guide block, and the right auxiliary plate is provided with a right arc-shaped guide block. The left and right arc-shaped guide blocks are symmetrically arranged. The left arc-shaped guide block is fitted with a left traction block, and the right arc-shaped guide block is fitted with a right traction block. The left and right traction blocks are respectively located on both sides of the material cutting blade rod.

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