Slicer for cord thread test piece

Abstract

The utility model provides a slicer for a cord thread test piece. The slicer solves the problems that notches in the steel wire cutting position of an existing cord thread test piece are uneven, and the cord thread test piece is inconvenient to take and use. Comprising an upper tool apron and a bottom tool apron which are sequentially arranged from top to bottom, the upper tool apron corresponds to the bottom tool apron in position, and the top face of the upper tool apron is connected with a driving mechanism; a cutting blade is arranged on the bottom face of the upper tool apron, a cutting groove corresponding to the cutting blade is formed in the top face of the bottom tool apron, and a cutting edge of the cutting blade is matched with the cutting groove. A center column is arranged on the bottom face of the upper tool apron, a blanking spring is arranged between the center column and the bottom tool apron, one end of the blanking spring is arranged on the center column in a sleeving mode, and the other end of the blanking spring abuts against the top face of the bottom tool apron. The device is widely applied to the technical field of tire manufacturing equipment.

Description

Technical Field

[0001] The present application relates to the technical field of tire manufacturing equipment, and more specifically, to a slicer for a cord test piece. Background Art

[0002] As one of the materials of tires, tire cords need to meet certain standards such as fatigue resistance, shear strength, durability, and rebound force. Before actual application, tire cord performance needs to be tested.

[0003] Currently, the primary laboratory process for testing cord performance involves slicing the steel cord to be tested, then testing the cut cord specimens to determine their performance. When removing the cord specimens, due to the large amount of steel filaments incorporated into the steel cord, the cutter struggles to completely sever the steel filaments, resulting in uneven cuts on the cord specimens. Furthermore, once the rubber coating cools, the steel cord becomes difficult to cut with, resulting in irregular slices that cannot meet the requirements of subsequent processes and require secondary processing, severely impacting slicing efficiency. Therefore, a cord specimen slicer with superior cutting quality and high slicing efficiency is urgently needed to meet production needs. Utility Model Content

[0004] To address the above-mentioned existing problems, the present invention adopts a technical solution: providing a cord test piece slicer that solves the problems of uneven cuts at the wire section of existing cord test pieces and inconvenient access to the cord test piece. The slicer comprises an upper blade holder and a lower blade holder, arranged sequentially from top to bottom. The upper and lower blade holders are positioned correspondingly, and the upper blade holder is connected to a drive mechanism. A cutting blade is provided on the bottom surface of the upper blade holder, and a cutting groove corresponding to the cutting blade is provided on the top surface of the lower blade holder. The cutting edge of the cutting blade engages with the cutting groove. A center column is provided on the bottom surface of the upper blade holder, and a blanking spring is provided between the center column and the lower blade holder. One end of the blanking spring is mounted on the center column, and the other end abuts the top surface of the lower blade holder.

[0005] Preferably, the shape of the cross section of the cutting groove in the horizontal direction matches the shape of the cross section of the cutting blade in the horizontal direction.

[0006] Preferably, the depth of the cutting groove is greater than the thickness of the steel cord.

[0007] Preferably, the cutting edge of the cutting blade has a semi-conical cross section in the vertical direction.

[0008] Preferably, the driving mechanism includes a hydraulic cylinder and a piston rod that moves in a vertical direction under the driving action of the hydraulic cylinder, and the bottom of the piston rod is connected to the upper tool holder.

[0009] Preferably, the cutting blade and the cutting groove are both annular.

[0010] Preferably, the cutting blade and the central post are coaxial.

[0011] Preferably, a limit position sensor is provided on the upper tool holder, and the limit position sensor is electrically connected to the control system of the drive mechanism.

[0012] Preferably, the natural length of the blanking spring is greater than the distance between the center column and the top surface of the bottom knife seat.

[0013] The beneficial effects of the present invention are as follows: a cutting blade is provided on the bottom surface of the upper blade holder, and a cutting groove corresponding to the cutting blade is provided on the top surface of the lower blade holder. The cutting blade's edge enters the cutting groove and completely severs the steel cord, thus avoiding uneven cuts and irregular shapes on the cut cord test piece. This reduces cutting errors, improves the cutting quality of the cord test piece, and prevents any impact on subsequent performance testing of the cord test piece. A drop spring is provided between the center column and the lower blade holder. The drop spring applies a downward force to the cord test piece, allowing it to quickly fall off after being cut. The drop spring allows the cut cord test piece to quickly fall off the cutting blade, preventing it from clinging to the cutting blade and affecting the next cutting operation. This facilitates continuous cutting operations, improves work efficiency, and facilitates easy access to the cord test piece. The drop spring ensures that the steel cord to be cut fits tightly against the top surface of the lower blade holder, preventing a gap between the two that could cause an irregular shape of the cord test piece and affect the cutting effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 Schematic diagram of the structure of the upper tool holder;

[0017] Figure 3 It is a structural diagram of the bottom knife seat.

[0018] Explanation of symbols in the figure: 1. Upper knife seat; 2. Bottom knife seat; 3. Cutting blade; 4. Cutting groove; 5. Center column; 6. Blanking spring; 7. Hydraulic cylinder; 8. Piston rod. DETAILED DESCRIPTION

[0019] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, this application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0020] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0021] It should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0022] A slicer for a cord test piece provided in an embodiment of the present application is now described.

[0023] See also Figures 1 to 3 , is a structural schematic diagram of the utility model. The cord test piece slicer includes an upper knife seat 1 and a bottom knife seat 2 arranged in sequence from top to bottom. The upper knife seat 1 and the bottom knife seat 2 are positioned corresponding to each other, and the upper knife seat 1 is connected to a driving mechanism; a cutting blade 3 is provided on the bottom surface of the upper knife seat 1, and a cutting groove 4 corresponding to the cutting blade 3 is provided on the top surface of the bottom knife seat 2, and the blade of the cutting blade 3 cooperates with the cutting groove 4; a center column 5 is provided on the bottom surface of the upper knife seat 1, and a blanking spring 6 is provided between the center column 5 and the bottom knife seat 2, one end of the blanking spring 6 is sleeved on the center column 5, and the other end abuts against the top surface of the bottom knife seat 2. Specifically, when in use, the steel cord to be cut is placed on the bottom knife seat 2, the blanking spring 6 abuts against the steel cord, and the driving mechanism drives the upper knife seat 1 to press down under the action of the control system, and the cutting blade 3 cuts the steel cord, so that the part of the steel cord to be cut enters the cutting groove 4 downward, and the blade of the cutting blade 3 continues to press down into the cutting groove 4 until it abuts against the bottom of the cutting groove 4, completely cutting off the steel cord, avoiding the problems of uneven cuts and irregular shapes of the cut cord test piece, reducing cutting errors, improving the cutting quality of the cord test piece, and avoiding affecting the subsequent performance test of the cord test piece.

[0024] Furthermore, the cross-sectional shape of the cutting groove 4 in the horizontal direction matches the cross-sectional shape of the cutting blade 3 in the horizontal direction.

[0025] Specifically, the depth of the cutting groove 4 is greater than the thickness of the steel cord to ensure that the cutting blade 3 can completely cut the steel cord.

[0026] Specifically, the cutting edge of the cutting blade 3 has a semi-conical cross section in the vertical direction; the semi-conical cutting edge extends into the cutting groove 4 so as to completely cut off the steel wires in the steel cord.

[0027] In one embodiment, the driving mechanism includes a hydraulic cylinder 7 and a piston rod 8 that moves in a vertical direction under the driving action of the hydraulic cylinder 7, and the bottom of the piston rod 8 is connected to the upper knife seat 1; under the action of the control system, the hydraulic cylinder 7 drives the piston rod 8 to move downward, thereby driving the cutting blade 3 to cut the steel cord; after the cutting is completed, under the action of the control system, the hydraulic cylinder 7 drives the piston rod 8 to move upward, and the upper knife seat 1 is lifted to facilitate the falling off of the cord test piece.

[0028] In this embodiment, the cutting blade 3 and the cutting groove 4 are both annular, and there is no need for secondary processing of the test piece; further, the size and shape of the cutting blade 3 and the cutting groove 4 can be designed according to the subsequent detection requirements, and the cutting process of the cord test piece can be completed in one go, thereby improving the cutting speed of the cord test piece and the subsequent detection efficiency.

[0029] Furthermore, the cutting blade 3 and the center column 5 are coaxial, and the blanking spring 6 applies a downward force to the center of the cord test piece on the cutting blade 3 so that the cord test piece can fall off quickly after cutting; the blanking spring 6 applies a uniform force to the steel cord to be cut, so that the steel cord to be cut can fit tightly with the top surface of the bottom knife seat 2, avoiding the presence of a gap between the two, resulting in an irregular shape of the cord test piece and affecting the cutting effect.

[0030] Furthermore, the upper blade holder 1 is equipped with a limit position sensor, which is electrically connected to the control system of the drive mechanism. When the upper blade holder 1 is pressed down to the limit position, the cutting blade 3 and the cutting groove 4 cooperate to cut the steel cord. At this time, the limit position sensor sends a signal to the control system, which activates the hydraulic cylinder 7 to move the piston rod 8 upward, completing the cutting operation. This prevents the cutting blade 3 from further downward movement and damage, reduces wear on the cutting blade 3 and the bottom blade holder 2, and extends the service life.

[0031] Specifically, the natural length of the blanking spring 6 is greater than the distance between the center post 5 and the top surface of the bottom blade seat 2. During the cutting operation, the blanking spring 6 is always in a compressed state. When the upper blade seat 1 is lifted, the cut cord test piece is quickly detached from the cutting blade 3 under the action of the blanking spring 6, preventing it from adhering to the cutting blade 3 and affecting the cutting blade 3's next cutting operation. This facilitates continuous cutting operations, improves operating efficiency, and makes it easier to access the cord test piece.

[0032] The method of using the utility model is as follows: when in use, the steel cord is placed on the bottom knife seat 2, the driving mechanism is started, and under the action of the control system, the hydraulic cylinder 7 drives the piston rod 8 to press down, the upper knife seat 1 is pressed down, and the blanking spring 6 makes the steel cord fit tightly with the bottom knife seat 2, and the cutting blade 3 cuts the steel cord so that the part of the steel cord to be cut enters the cutting groove 4 downward, and the blade of the cutting blade 3 continues to press down into the cutting groove 4 until it abuts against the bottom of the cutting groove 4, completely cutting the steel cord; when the cutting is completed, the hydraulic cylinder 7 drives the piston rod 8 to move upward, and the cut cord test piece falls off quickly under the action of the blanking spring 6, completing a cutting operation.

[0033] In the present invention, a cutting blade 3 is provided on the bottom surface of the upper blade holder 1, and a cutting groove 4 is provided on the top surface of the lower blade holder 2, corresponding to the cutting blade 3. The cutting edge of the cutting blade 3 enters the cutting groove 4, completely severing the steel cord. This prevents uneven cuts and irregular shapes in the cut cord test piece, reduces cutting errors, improves the cutting quality of the test piece, and prevents any impact on subsequent performance testing of the test piece. A drop spring 6 is provided between the center post 5 and the lower blade holder 2. The drop spring 6 applies a downward force to the test piece, allowing it to quickly fall off after being cut. The drop spring 6 quickly releases the test piece from the cutting blade 3 after being cut, preventing it from clinging to the cutting blade 3 and affecting the next cutting operation. This facilitates continuous cutting operations, improves work efficiency, and facilitates easy access to the test piece. The drop spring 6 ensures that the steel cord to be cut fits tightly against the top surface of the lower blade holder 2, preventing gaps between the two that could cause irregular shapes in the test piece and affect the cutting effect.

[0034] The above-described embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present application, and should all be included in the scope of protection of the present application.

Claims

1. A slicer for a cord test piece, comprising an upper knife seat (1) and a bottom knife seat (2) arranged in sequence from top to bottom, wherein the upper knife seat (1) and the bottom knife seat (2) are positioned correspondingly, and the upper knife seat (1) is connected to a driving mechanism; characterized in that: The bottom surface of the upper knife seat (1) is provided with a cutting blade (3), and the top surface of the bottom knife seat (2) is provided with a cutting groove (4) corresponding to the cutting blade (3), and the blade of the cutting blade (3) cooperates with the cutting groove (4); the bottom surface of the upper knife seat (1) is provided with a center column (5), and a blanking spring (6) is provided between the center column (5) and the bottom knife seat (2), one end of the blanking spring (6) is sleeved on the center column (5), and the other end is in contact with the top surface of the bottom knife seat (2).

2. The cord test piece slicer according to claim 1, wherein: The cross-sectional shape of the cutting groove (4) in the horizontal direction matches the cross-sectional shape of the cutting blade (3) in the horizontal direction.

3. The cord test piece slicer according to claim 2, wherein: The depth of the cutting groove (4) is greater than the thickness of the steel cord.

4. The cord test piece slicer according to claim 1, wherein: The cutting edge of the cutting blade (3) has a semi-conical cross-section in the vertical direction.

5. The cord test piece slicer according to claim 1, wherein: The driving mechanism comprises a hydraulic cylinder (7) and a piston rod (8) that moves in a vertical direction under the driving action of the hydraulic cylinder (7), and the bottom of the piston rod (8) is connected to the upper tool holder (1).

6. The cord test piece slicer according to claim 1, wherein: The cutting blade (3) and the cutting groove (4) are both annular.

7. The cord test piece slicer according to claim 1, wherein: The cutting blade (3) and the central column (5) are coaxial.

8. The cord test piece slicer according to claim 1, wherein: The upper tool holder (1) is provided with a limit position sensor, and the limit position sensor is electrically connected to the control system of the drive mechanism.

9. The cord test piece slicer according to claim 1, wherein: The natural length of the blanking spring (6) is greater than the distance between the center column (5) and the top surface of the bottom knife seat (2).

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