Blade replacing device of plate shearing machine

Abstract

The utility model discloses a plate shearing machine blade replacing device which comprises a tool apron, a blade and a tool rest, the blade is fixed on the tool apron, and the tool apron is fixed on the tool rest through a pre-tightening device. According to the plate shearing machine blade fixing structure, the blade is fixed to the tool apron, the tool apron is fixed to the tool rest through the pre-tightening device, when fixing is needed, the tool apron and the tool rest are fixed through the pre-tightening device, when separating is needed, the pre-tightening device releases pre-tightening force, the tool apron and the tool rest can be separated, the tool apron is taken out of the tool rest at the moment, and the tool apron is taken out of the tool rest. The problems that the space for replacing the blades in the tool rest is limited, and certain risks exist are solved, an operator can replace the blades at will, and the working efficiency and convenience are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of plate coiling and uncoiling line processing equipment, in particular to a plate shearing machine blade replacement device. Background Art

[0002] The shearing machine in the coil uncoiling and leveling shearing line is a common machine. It is a machine that uses one blade to make reciprocating linear motion relative to another blade to shear the plate. Due to the repeated use of the blade, the blade needs to be replaced frequently.

[0003] However, the current blade replacement takes up a lot of auxiliary time, and manual operation is in a small space, inconvenient, and dangerous. Therefore, it is necessary to design a semi-automatic device that assists manual operation to quickly replace the blade, reduce the operator's workload, improve the efficiency of blade replacement, and reduce operational risks. Utility Model Content

[0004] In order to solve the technical problem of inconvenient blade changing of shearing machines existing in the background technology, the purpose of the utility model is to provide a blade changing device for shearing machines, which can solve the above problem.

[0005] The technical solution for realizing the purpose of the utility model is: a blade replacement device for a shearing machine, comprising a blade seat, a blade and a knife holder, wherein the blade is fixed on the blade seat, and the blade seat is fixed on the knife holder through a pre-tightening device.

[0006] The shearing machine blade fixing structure in this solution is that the blade is fixed on the blade holder, and the blade holder is fixed on the blade holder through a pre-tightening device. When it needs to be fixed, the blade holder and the blade holder are fixed through the pre-tightening device. When it needs to be separated, the pre-tightening device releases the pre-tightening force, and the blade holder and the blade holder can be separated. At this time, the blade holder is taken out of the blade holder, eliminating the problem of limited space and certain risks in replacing the blade in the blade holder. The operator can replace it at will, improving work efficiency and convenience. The blade can be fixed on the blade holder by connecting bolts, and disassembly and maintenance are also relatively convenient.

[0007] Furthermore, the pre-tightening device includes a "T"-shaped block and a pull rod. The tool holder is provided with a "T"-shaped slot corresponding to the T-shaped block, and the T-shaped block is installed in the "T"-shaped slot; the tool holder is provided with a pull rod connected to the "T"-shaped block, which is used to pull the "T"-shaped block and lock the tool holder and the tool holder. The pull rod has a pulling pre-tightening force on the "T"-shaped block. When the tool holder and the tool holder need to be fixed, the pre-tightening force is applied, and the "T"-shaped block is tightly engaged in the "T"-shaped slot on the tool holder and is tightly fixed to the tool holder, that is, the pull rod has a pulling force to pull the tool holder toward the tool holder; when the tool holder and the tool holder need to be separated, the pre-tightening force is eliminated, that is, the pull rod does not have a pulling force to pull the tool holder toward the tool holder, and the tool holder can be taken out of the tool holder at will.

[0008] Furthermore, the replacement device also includes a shearing machine body, on which a cylinder is fixed to push the pull rod to move. The cylinder drive is preferred, which can provide a good pre-tightening force to lock the tool holder on the tool holder. In addition, automatic control is realized to save manpower.

[0009] Furthermore, the oil cylinder includes a cylinder outer sleeve and a cylinder inner sleeve sliding in the cylinder outer sleeve, and a preload spring is arranged between the cylinder inner sleeve and the pull rod. The cylinder inner sleeve slides in the cylinder outer sleeve to provide a power source, and the preload spring arranged between the cylinder inner sleeve and the pull rod provides the pull rod with a preload force in a tightened state of the spring. That is, when the tool holder and the tool seat need to be fixed, the cylinder inner sleeve moves in the cylinder outer sleeve toward one end away from the pull rod, the spring is in an open and tight state, the spring pulls the pull rod, and the pull rod pulls the "T" block to tightly fix the tool seat on the tool holder; when the tool holder and the tool seat need to be separated, the cylinder inner sleeve slides in the cylinder outer sleeve toward one end of the pull rod, the spring relaxes, the preload force is eliminated, and the tool seat can be freely taken out of the tool holder.

[0010] Furthermore, the cylinder sleeve is in a "T"-shaped structure, and the cylinder sleeve has a cavity in which the cylinder sleeve slides, and the inner wall of the cavity is provided with a first limiting step and a second limiting step, and the large head of the cylinder sleeve abuts against the first limiting step, and the second limiting step is located on the side of the first limiting step away from the cylinder sleeve, and an oil filling cavity is formed between the large head of the cylinder sleeve and the second limiting step, and the cylinder sleeve has an oil filling nozzle connected to the oil filling cavity. That is, when the spring is opened and tightened, the large head end of the cylinder sleeve abuts against the first limiting step, and when the tool holder needs to be taken out of the tool holder, oil is filled from the oil filling nozzle into the oil filling cavity, and when the oil pressure in the oil filling cavity gradually increases, it will push the cylinder sleeve to move in the direction of the pull rod, that is, the spring is in a relaxed state at this time, and the pull rod reduces the pulling force on the T-block, the preload force is eliminated, and the tool holder can be freely taken out of the tool holder.

[0011] Furthermore, the cylinder housing has an installation cavity inside, and the preload spring is installed in the installation cavity. The installation cavity imposes certain spatial restrictions on the spring, and the spring will not deviate too much to the left or right when it is in a relaxed state.

[0012] Furthermore, the ends of the cylinder sleeve and the pull rod are respectively provided with a "T"-shaped head, the cross-sectional area of ​​the "T"-shaped head is larger than the width of the pre-tensioning spring, and the two ends of the pre-tensioning spring are respectively fixed on the "T"-shaped head, so that the spring can be well fixed at the end position of the spring, and there is sufficient supporting area at the end of the spring to provide a supporting platform when the spring is in a relaxed or tensioned state.

[0013] Furthermore, a wear-resistant ring and a dustproof ring are provided between the cylinder inner sleeve and the cylinder outer sleeve. The dustproof ring is located at the opening of the cavity and can prevent dust particles from entering the oil cylinder, thereby preventing the cylinder inner sleeve from sliding inconveniently in the cylinder outer sleeve.

[0014] Furthermore, a channel is provided in the tool holder, and the pull rod is installed in the channel. The channel has a limiting effect on the pull rod in space to prevent the pull rod from deviating too much, thereby affecting the force applied by the cylinder or failing to cooperate with the T-block.

[0015] Furthermore, the tool holder is provided with a limiting groove, and the tool seat is provided with a limiting protrusion corresponding to the limiting groove, and the limiting protrusion is installed in the limiting groove. When the tool seat needs to be installed on the tool holder, the limiting protrusion is first aligned with the limiting groove, and the tool holder can be directly pushed into the tool holder without worry, which is quick and convenient to install and improves efficiency.

[0016] By adopting the above technical solution, the utility model has the following beneficial effects:

[0017] (1) The blade holder and the tool holder where the blade is installed are preloaded and locked by a pull rod and a "T" block, and the preload is fixed and applied. The preload is eliminated when separated. The blade can be replaced after the blade holder is pulled out from the tool holder, thereby solving the problem of limited space and danger in replacing the blade in the tool holder;

[0018] (2) Adding a cylinder to apply power to the pull rod to achieve automated mechanical operation and save labor;

[0019] (3) Add a spring between the tie rod and the cylinder sleeve. The spring has a pre-tightening force on the tie rod when it is stretched and tightened. In addition, the spring also acts as a buffer to eliminate the problem of excessive force in direct contact between the cylinder sleeve and the tie rod, which would damage the tie rod and the "T" block.

[0020] (4) Coordinated limiting grooves and limiting protrusions are provided on the tool holder and the tool holder to facilitate rapid positioning during installation and improve installation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to make the content of the utility model easier to understand, the utility model is further described in detail according to specific embodiments and in conjunction with the accompanying drawings.

[0022] Figure 1 This is a schematic diagram of the overall cross-sectional structure of the shearing machine in the utility model;

[0023] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0024] Figure 3 for Figure 1Enlarged view of point B in the middle.

[0025] The numbers in the accompanying drawings are: 1 tool holder; 2 blade; 3 tool holder; 4 "T" block; 5 pull rod; 6 "T" slot; 7 shearing machine body; 8 oil cylinder; 9 cylinder outer sleeve; 10 cylinder inner sleeve; 11 preload spring; 12 big head; 13 first limit step; 14 second limit step; 15 oil filling chamber; 16 oil filling nozzle; 17 installation chamber; 18 "T" head; 19 wear-resistant ring; 20 dustproof ring; 21 cavity; 22 channel; 23 limit slot; 24 limit protrusion; 25 lower blade; 26 lower tool holder; 27 lower tool holder; 28 upper blade; 29 upper tool holder; 30 upper tool holder; 31 connecting bolt. DETAILED DESCRIPTION

[0026] Example:

[0027] like Figure 1 As shown, this embodiment provides a shearing machine blade replacement device, including a blade seat 1, a blade 2 and a blade holder 3, wherein the blade 2 is fixed on the blade seat 1, and the blade seat 1 is fixed on the blade holder 3 by a pre-tightening device. The fixing structure of the shearing machine blade 2 in this scheme is that the blade 2 is fixed on the blade seat 1, and the blade seat 1 is fixed on the blade holder 3 by a pre-tightening device. When fixing is required, the blade seat 1 and the blade holder 3 are fixed by the pre-tightening device. When separation is required, the pre-tightening device releases the pre-tightening force, and the blade seat 1 and the blade holder 3 can be separated. At this time, the blade seat 1 is taken out from the blade holder 3, eliminating the problem of limited space and certain risks in replacing the blade 2 in the blade holder 3. The operator can replace it at will, thereby improving work efficiency and convenience. The blade 2 can be fixed on the blade seat 1 by a connecting bolt 31, and disassembly and maintenance are also relatively convenient. The structure of the blade 2 in the shearing machine is specifically divided into components such as an upper blade 28, an upper blade seat 29, an upper blade holder 30, a lower blade 25, a lower blade seat 26 and a lower blade holder 27, and the specific installation structure is as described above.

[0028] like Figure 2 As shown, the pre-tightening device includes a "T" block 4 and a pull rod 5. A "T" slot 6 corresponding to the T block is provided in the tool holder 1, and the T is installed in the "T" slot 6; a pull rod 5 connected to the "T" block 4 is provided in the tool holder 3, which is used to pull the "T" block 4 and lock the tool holder 1 and the tool holder 3. The pull rod 5 has a pulling pre-tightening force on the "T" block 4. When the tool holder 1 and the tool holder 3 need to be fixed, the pre-tightening force is applied, and the "T" block 4 is tightly engaged in the "T" slot 6 on the tool holder 1 and is tightly fixed to the tool holder 3, that is, the pull rod 5 has a pulling force to pull the tool holder 1 toward the tool holder 3; when the tool holder 1 and the tool holder 3 need to be separated, the pre-tightening force is eliminated, that is, the pull rod 5 does not have a pulling force to pull the tool holder 1 toward the tool holder 3, and the tool holder 1 can be taken out of the tool holder 3 at will.

[0029] Preferably, a channel 22 is provided in the tool holder 3, and the pull rod 5 is installed in the channel 22. The channel 22 has a limiting effect on the pull rod 5 in space to prevent the pull rod 5 from deviating too much, affecting the force applied by the cylinder 8 or failing to cooperate with the T-block.

[0030] Preferably, the tool holder 3 is provided with a limiting groove 23, and the tool seat 1 is provided with a limiting protrusion 24 corresponding to the limiting groove 23, and the limiting protrusion 24 is installed in the limiting groove 23. When the tool seat 1 needs to be installed on the tool holder 3, the limiting protrusion 24 is first aligned in the limiting groove 23, and the tool holder 1 can be directly pushed into the tool holder 3 without worry, which is quick and convenient to install and improves efficiency.

[0031] like Figure 3 As shown, the replacement device also includes a shearing machine body 7, on which a cylinder 8 is fixed to push the pull rod 5 to move. The cylinder 8 is preferably driven to provide a good preload force to lock the tool holder 1 on the tool holder 3. In addition, automatic control is achieved to save manpower. The cylinder 8 includes a cylinder outer sleeve 9 and a cylinder inner sleeve 10 sliding in the cylinder outer sleeve 9, and a preload spring 11 is arranged between the cylinder inner sleeve 10 and the pull rod 5. The cylinder inner sleeve 10 slides in the cylinder outer sleeve 9 to provide a power source, and the preload spring 11 arranged between the cylinder inner sleeve 10 and the pull rod 5 provides the pull rod 5 with a preload force in a tightened state of the spring. That is, when the tool holder 3 and the tool seat 1 need to be fixed, the cylinder sleeve 10 moves in the cylinder outer sleeve 9 toward the end away from the pull rod 5, the spring is in an open and tense state, the spring pulls the pull rod 5, and the pull rod 5 pulls the "T"-shaped block 4 to tightly fix the tool seat 1 on the tool holder 3; when the tool holder 3 and the tool seat 1 need to be separated, the cylinder sleeve 10 slides in the cylinder outer sleeve 9 toward one end of the pull rod 5, the spring relaxes, the preload force is eliminated, and the tool seat 1 can be freely taken out of the tool holder 3.

[0032] Preferably, the cylinder sleeve 10 has a "T"-shaped structure, and the cylinder sleeve outer sleeve 9 has a cavity 21 in which the cylinder sleeve 10 slides, and the inner wall of the cavity 21 is provided with a first limiting step 13 and a second limiting step 14, the large head 12 of the cylinder sleeve 10 abuts against the first limiting step 13, and the second limiting step 14 is located on the side of the first limiting step 13 away from the cylinder sleeve 10, and an oil filling cavity 15 is formed between the large head 12 of the cylinder sleeve 10 and the second limiting step 14, and the cylinder sleeve outer sleeve 9 has an oil filling nozzle 16 connected to the oil filling cavity 15. That is, when the spring is stretched and tightened, the large head 12 end of the cylinder sleeve 10 is in contact with the first limiting step 13. When the tool holder 1 needs to be taken out from the tool holder 3, oil is filled into the oil filling chamber 15 from the oil filling nozzle 16. When the oil pressure in the oil filling chamber 15 gradually increases, the cylinder sleeve 10 is pushed to move in the direction of the pull rod 5. That is, the spring is in a relaxed state at this time, and the pull rod 5 reduces the pulling force on the T-block, the preload force is eliminated, and the tool holder 1 can be freely taken out from the tool holder 3.

[0033] Preferably, the cylinder housing 9 has a mounting cavity 17, and the preload spring 11 is mounted in the mounting cavity 17. The mounting cavity 17 imposes certain spatial restrictions on the spring, and the spring will not deviate too much to the left or right when the spring is in a relaxed state.

[0034] Preferably, the cylinder sleeve 10 and the end of the pull rod 5 are respectively provided with a "T"-shaped head 18, and the cross-sectional area of ​​the "T"-shaped head 18 is larger than the width of the preload spring 11. The two ends of the preload spring 11 are respectively fixed on the "T"-shaped head 18, and the spring can be well fixed at the end position of the spring, and there is sufficient supporting area at the end of the spring to provide a supporting platform when the spring is in a relaxed or tensioned state.

[0035] Preferably, a wear-resistant ring 19 and a dust-proof ring 20 are further provided between the cylinder inner sleeve 10 and the cylinder outer sleeve 9. The dust-proof ring 20 is located at the opening of the cavity 21, and can prevent dust particles and the like from entering the oil cylinder 8, causing the cylinder inner sleeve 10 to be inconvenient to slide in the cylinder outer sleeve 9; the wear-resistant ring 19 plays a role in preventing the cylinder inner sleeve 10 and the cylinder outer sleeve 9 from reducing friction in the oil cylinder 8.

[0036] Working principle: The preload spring 11, the pull rod 5 and the "T" block 4 form a preload device. When the spring collapses and is tightened, the pull rod 5 has a preload force, and the pull rod 5 has a pulling force on the "T" block 4, tightening and fixing the knife seat 1 on the knife holder 3. The cylinder sleeve 10 is connected to the other end of the preload spring 11 to provide an overall power source; there is an oil filling chamber 15 between the cylinder sleeve 10 and the cylinder outer sleeve 9. After the oil is filled through the oil filling nozzle 16, the oil pressure increases and can push the cylinder sleeve 10 to slide in the cylinder outer sleeve 9, thereby driving the preload spring 11 to contract. When the preload spring 11 is in a relaxed state, the knife seat 1 can be freely taken out of the knife holder 3, and the blade 2 can be easily replaced without being restricted by the space in the knife holder 3, and the possible danger of replacing the blade 2 in the knife holder 3 is also reduced.

[0037] The specific embodiments described above further illustrate the purpose, technical solutions and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A shearing machine blade replacement device, characterized in that: It comprises a knife seat (1), a blade (2) and a knife holder (3), wherein the blade (2) is fixed on the knife seat (1), and the knife seat (1) is fixed on the knife holder (3) via a pre-tightening device; The pre-tightening device comprises a "T"-shaped block (4) and a pull rod (5); a "T"-shaped groove (6) corresponding to the "T"-shaped block (4) is arranged in the tool holder (1), and the T-shaped is installed in the "T"-shaped groove (6); a pull rod (5) connected to the "T"-shaped block (4) is arranged in the tool holder (3) and is used to pull the "T"-shaped block (4) and lock the tool holder (1) and the tool holder (3).

2. A shearing machine blade replacement device according to claim 1, characterized in that: It also includes a shearing machine body (7), on which a cylinder (8) is fixed for pushing the pull rod (5) to move.

3. A shearing machine blade replacement device according to claim 2, characterized in that: The oil cylinder (8) comprises a cylinder outer sleeve (9) and a cylinder inner sleeve (10) sliding in the cylinder outer sleeve (9), and a preload spring (11) is arranged between the cylinder inner sleeve (10) and the pull rod (5).

4. A shearing machine blade replacement device according to claim 3, characterized in that: The cylinder sleeve (10) is of a "T"-shaped structure. The cylinder sleeve (9) has a cavity (21) in which the cylinder sleeve (10) slides. The inner wall of the cavity (21) is provided with a first limiting step (13) and a second limiting step (14). The large head (12) of the cylinder sleeve (10) abuts against the first limiting step (13). The second limiting step (14) is located on a side away from the first limiting step (13) of the cylinder sleeve (10). An oil filling cavity (15) is formed between the large head (12) of the cylinder sleeve (10) and the second limiting step (14). The cylinder sleeve (9) has an oil filling nozzle (16) connected to the oil filling cavity (15).

5. A shearing machine blade replacement device according to claim 3, characterized in that: The cylinder outer sleeve (9) has a mounting cavity (17) in it, and the preload spring (11) is mounted in the mounting cavity (17).

6. A shearing machine blade replacement device according to claim 3, characterized in that: The ends of the cylinder sleeve (10) and the pull rod (5) are respectively provided with a "T"-shaped head (18), the cross-sectional area of ​​the "T"-shaped head (18) is larger than the width of the preload spring (11), and the two ends of the preload spring (11) are respectively fixed on the "T"-shaped head (18).

7. A shearing machine blade replacement device according to claim 4, characterized in that: A wear-resistant ring (19) and a dustproof ring (20) are also provided between the cylinder inner sleeve (10) and the cylinder outer sleeve (9), and the dustproof ring (20) is located at the opening of the cavity (21).

8. A shearing machine blade replacement device according to claim 1, characterized in that: The tool holder (3) is provided with a channel (22), and the pull rod (5) is installed in the channel (22).

9. A shearing machine blade replacement device according to claim 1, characterized in that: The tool holder (3) is provided with a limiting groove (23), the tool seat (1) is provided with a limiting protrusion (24) corresponding to the limiting groove (23), and the limiting protrusion (24) is installed in the limiting groove (23).

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