A kitchen knife rack with a self-locking function

Abstract

The present invention discloses a kitchen knife rack with a self-locking function, which includes a knife rack assembly, a first cover plate and a second cover plate. The knife rack assembly includes a knife rack main body, a self-locking assembly arranged inside the knife rack main body, and an L-shaped clamping plate cooperating with the self-locking assembly. The self-locking assembly includes a self-locking guide and a bolt. The self-locking guide includes a base plate, a guide rod and a baffle. A heart-shaped chute is formed on the other side surface of the base plate. A first step and a second step are arranged in the heart-shaped chute, and the first step and the second step divide the heart-shaped chute into a vertical straight section, a self-locking curve section and an unlocking curve section. An inclined surface for contacting the long side plate of the L-shaped clamping plate is arranged at the top end of the guide rod, and a second spring is arranged in the installation groove of the L-shaped clamping plate. The structure of the present invention is simple, which realizes the purpose of locking the knife body in the knife body insertion groove. At the same time, only by pressing the knife body down twice, the switching between locking the knife body and unlocking the knife body can be realized.

Description

Technical Field

[0001] The present invention belongs to the technical field of kitchen utensils, and particularly relates to a kitchen knife rack with a self-locking function. Background Art

[0002] A kitchen knife is one of the commonly used kitchen utensils. When not in use, a special kitchen knife rack is generally used for storage and placement, rather than randomly placing the kitchen knife on the tabletop to avoid accidental contact of the blade with the human body causing harm. However, the existing kitchen knife racks have relatively simple structures and functions, and can only be used for storing and placing kitchen knives, with poor safety. Since the blade of the kitchen knife is sharp, special groups such as children should be prevented from using it. Therefore, a kitchen knife rack with a self-locking function that is easy to operate, safe, and reliable should be provided. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a kitchen knife rack with a self-locking function for the deficiencies in the above-mentioned prior art. Through the sliding fit between the plug pin and the heart-shaped sliding groove formed in the self-locking guide member, the short side plate of the L-shaped clamping plate can be driven to be clamped on the end face of the knife body near the handle, so as to lock the knife body in the knife body insertion slot. At the same time, only by pressing the knife body twice, the switching between locking and unlocking of the knife body can be realized, which is convenient to operate, safe, and reliable, and improves the use safety of the kitchen knife and the kitchen knife rack.

[0004] To solve the above technical problems, the technical solution adopted by the present invention is as follows: A kitchen knife rack with a self-locking function, characterized in that it includes a knife rack assembly, a first cover plate and a second cover plate respectively arranged on both sides of the knife rack assembly. The knife rack assembly includes a knife rack main body, a self-locking assembly arranged inside the knife rack main body, and an L-shaped clamping plate cooperating with the self-locking assembly. A knife body insertion groove, a self-locking assembly installation groove communicating with the knife body insertion groove, and an L-shaped clamping plate installation groove are opened on one side of the knife rack main body. The self-locking assembly installation groove and the L-shaped clamping plate installation groove are communicated through a guiding groove. The self-locking assembly includes a self-locking guiding member and a plug cooperating with the self-locking guiding member. The self-locking guiding member is connected in the self-locking assembly installation groove through two parallelly arranged first springs. The self-locking guiding member includes a substrate, a guide rod connected to the top end of the substrate and cooperating with the guiding groove, and a baffle vertically installed on one side of the substrate and located at the bottom end of the substrate. A heart-shaped sliding groove is opened on the other side of the substrate. One end of the plug is rotatably installed on the inner wall of the self-locking assembly installation groove, and the other end of the plug is inserted into the heart-shaped sliding groove. A first step and a second step are arranged in the heart-shaped sliding groove. The first step and the second step divide the heart-shaped sliding groove into a vertical straight segment, a self-locking curve segment arranged at the top end of the vertical straight segment, and an unlocking curve segment. An inclined surface for contacting the long side plate of the L-shaped clamping plate is arranged at the top end of the guide rod. The long side plate of the L-shaped clamping plate is rotatably installed in the L-shaped clamping plate installation groove, and a second spring for pressing on the long side plate of the L-shaped clamping plate is arranged in the L-shaped clamping plate installation groove.

[0005] For the above kitchen knife rack with a self-locking function, it is characterized in that: mounting shafts are arranged on both sides of the top end of the substrate, mounting columns are vertically arranged on the inner wall of the self-locking assembly installation groove, the bottom end of the first spring is installed on the mounting shaft, and the top end of the first spring is installed on the mounting column.

[0006] For the above kitchen knife rack with a self-locking function, it is characterized in that: fixed shafts are arranged on both side walls of the L-shaped clamping plate installation groove, and both ends of the long side plate of the L-shaped clamping plate are respectively rotatably installed on the two fixed shafts.

[0007] For the above kitchen knife rack with a self-locking function, it is characterized in that: the number of the knife rack main bodies ranges from 3 to 6, the thickness of the knife rack main body ranges from 50 mm to 70 mm, the thickness of the first cover plate ranges from 3 mm to 5 mm, and the thickness of the second cover plate ranges from 15 mm to 20 mm.

[0008] The above-mentioned kitchen knife rack with a self-locking function is characterized in that: a relief groove is provided on another side surface of the knife rack body, a plurality of the knife rack bodies are positioned by pin nails, the first cover plate, the second cover plate and the plurality of the knife rack bodies are fixedly connected by fastening bolts, two pin holes are provided on the knife rack body, and a plurality of threaded holes are provided on the knife rack body, the first cover plate and the second cover plate.

[0009] The present invention has the following advantages compared with the prior art:

[0010] 1. By arranging a self-locking component inside the knife rack body and an L-shaped clamping plate matched with the self-locking component, a knife body insertion slot, a self-locking component installation slot and an L-shaped clamping plate installation slot are provided on one side surface of the knife rack body. The self-locking component installation slot and the L-shaped clamping plate installation slot are both located inside the knife body insertion slot, and the self-locking component installation slot is communicated with the L-shaped clamping plate installation slot through a guiding groove. During actual use, the self-locking component is installed in the self-locking component installation slot, and the L-shaped clamping plate is installed in the L-shaped clamping plate installation slot. After the knife body is inserted into the knife body insertion slot, under the action of the self-locking component, the short side plate of the L-shaped clamping plate can be driven to be clamped on the end surface of the knife body close to the knife handle side, so as to lock the knife body in the knife body insertion slot, which is not convenient for special groups such as children to easily take out the knife body from the kitchen knife rack, and improves the use safety of the kitchen knife and the kitchen knife rack.

[0011] 2. The self-locking component of the present invention includes a self-locking guiding piece and a plug pin. The self-locking guiding piece includes a base plate, a guide rod and a baffle plate, and an inclined surface is provided at the top end of the guide rod. By providing a heart-shaped sliding groove on another side surface of the base plate, during actual installation, one end of the plug pin is rotatably installed on the inner wall of the self-locking component installation slot, and the other end of the plug pin is inserted into the heart-shaped sliding groove. Since a first step and a second step are provided in the heart-shaped sliding groove, and the first step and the second step divide the heart-shaped sliding groove into a vertical straight line segment, a self-locking curve segment provided at the top of the vertical straight line segment and an unlocking curve segment. During actual use, the working process of the self-locking of the self-locking component is as follows: Since the self-locking guiding piece is connected in the self-locking component installation slot through two parallelly arranged first springs, when the knife body is inserted into the knife body insertion slot from top to bottom, after the end surface of the knife body far from the knife handle side presses against the upper surface of the baffle plate, the knife body is pressed down for the first time, the knife body will push the baffle plate to drive the guide rod to move downward. At this time, the other end of the plug pin will slide upward along the vertical straight line segment, and under the blocking action of the first step, the other end of the plug pin can only continue to slide along the self-locking curve segment. When the other end of the plug pin slides to the concave position at the top of the heart-shaped sliding groove, the inclined surface of the guide rod is separated from the long side plate of the L-shaped clamping plate. At this time, the second spring will pop out and press against the long side plate of the L-shaped clamping plate, driving the L-shaped clamping plate to deflect, so that the short side plate of the L-shaped clamping plate is clamped on the end surface of the knife body close to the knife handle side, achieving the purpose of locking the knife body in the knife body insertion slot.

[0012] 3. The unlocking working process of the self-locking component of the present invention is as follows: When the tool body is pressed down for the second time, under the guiding action of the second step, the other end of the bolt can only slide along the unlocking curve section until the other end of the bolt is reset into the vertical straight line section. At this time, under the pulling action of the first spring, the self-locking guiding part gradually moves upward, so that the guide rod pushes the long side plate of the L-shaped clamping plate, driving the L-shaped clamping plate to deflect and squeezing the second spring to contract, so that the short side plate of the L-shaped clamping plate is separated from the end face of the tool body close to the tool handle side, thereby realizing the purpose of unlocking the tool body from the tool body insertion slot. The operation is simple, time-saving and labor-saving, but it is not easy for special groups such as children to easily take out the tool body from the vegetable knife rack. The use effect is high and it is convenient for popularization and application.

[0013] In summary, the present invention has a simple structure and reasonable design. Through the sliding cooperation between the bolt and the heart-shaped chute opened on the self-locking guiding part, the purpose of driving the short side plate of the L-shaped clamping plate to be clamped on the end face of the tool body close to the tool handle side can be achieved, so as to realize the purpose of locking the tool body in the tool body insertion slot. At the same time, only by pressing the tool body down twice, the switching between locking and unlocking the tool body can be realized. The operation is convenient, safe and reliable, and the use safety of the vegetable knife and the vegetable knife rack is improved.

[0014] The following will further describe the present invention in detail through the drawings and embodiments. Description of the Drawings

[0015] Figure 1 It is a schematic diagram of the use state of the present invention.

[0016] Figure 2 It is a schematic diagram of the connection relationship between the tool rack body, the self-locking component and the L-shaped clamping plate of the present invention.

[0017] Figure 3 It is a schematic diagram of the structure of the tool rack body of the present invention.

[0018] Figure 4 It is a schematic diagram of the connection relationship between the tool rack body, the mounting column, the bolt and the fixed shaft of the present invention.

[0019] Figure 5 It is a schematic diagram of the structure of the self-locking guiding part of the present invention.

[0020] Description of the Reference Numerals:

[0021] 1 - Tool rack body; 1-1 - Relief groove; 1-2 - Tool body insertion slot;

[0022] 1-3 - Self-locking component installation slot; 1-4 - L-shaped clamping plate installation slot; 1-5 - Guide groove;

[0023] 2 - First cover plate; 3 - Second cover plate; 4-1 - Short side plate;

[0024] 4-2 - long side plate; 5-1 - tool body; 5-2 - tool handle;

[0025] 6-1 - base plate; 6-2 - guide rod; 6-2-1 - inclined surface;

[0026] 6-3 - baffle; 7-1 - mounting shaft; 7-2 - mounting post;

[0027] 7-3 - first spring; 8 - pin; 9-1 - vertical straight segment;

[0028] 9-2 - self-locking curve segment; 9-3 - unlocking curve segment; 9-4 - first step;

[0029] 9-5 - second step; 10 - fixed shaft; 11 - second spring;

[0030] 12 - bolt hole; 13 - pin hole. Specific embodiments

[0031] Such as Figures 1 to 5As shown in the figure, the present invention includes a tool rest assembly, a first cover plate 2 and a second cover plate 3 respectively arranged on both sides of the tool rest assembly. The tool rest assembly includes a tool rest body 1, a self-locking assembly arranged inside the tool rest body 1, and an L-shaped clamping plate cooperating with the self-locking assembly. A tool body insertion slot 1-2, a self-locking assembly installation slot 1-3 communicating with the tool body insertion slot 1-2, and an L-shaped clamping plate installation slot 1-4 are formed on one side surface of the tool rest body 1. The self-locking assembly installation slot 1-3 is communicated with the L-shaped clamping plate installation slot 1-4 through a guiding slot 1-5. The self-locking assembly includes a self-locking guiding member and a plug pin 8 cooperating with the self-locking guiding member. The self-locking guiding member is connected in the self-locking assembly installation slot 1-3 through two parallelly arranged first springs 7-3. The self-locking guiding member includes a substrate 6-1, a guide rod 6-2 connected to the top end of the substrate 6-1 and cooperating with the guiding slot 1-5, and a baffle 6-3 vertically installed on one side surface of the substrate 6-1 and located at the bottom end of the substrate 6-1. A heart-shaped sliding groove is formed on the other side surface of the substrate 6-1. One end of the plug pin 8 is rotatably installed on the inner wall of the self-locking assembly installation slot 1-3, and the other end of the plug pin 8 is inserted into the heart-shaped sliding groove. A first step 9-4 and a second step 9-5 are arranged in the heart-shaped sliding groove. The first step 9-4 and the second step 9-5 divide the heart-shaped sliding groove into a vertical straight segment 9-1, a self-locking curve segment 9-2 arranged at the top end of the vertical straight segment 9-1, and an unlocking curve segment 9-3. An inclined surface 6-2-1 for contacting the long side plate 4-2 of the L-shaped clamping plate is arranged at the top end of the guide rod 6-2. The long side plate 4-2 of the L-shaped clamping plate is rotatably installed in the L-shaped clamping plate installation slot 1-4. A second spring 11 for pressing on the long side plate 4-2 of the L-shaped clamping plate is arranged in the L-shaped clamping plate installation slot 1-4.

[0032] As Figure 1 and Figure 2As shown in the figure, in this embodiment, a self-locking component is arranged inside the tool rest body 1, and an L-shaped clamping plate that cooperates with the self-locking component is provided. A tool body insertion slot 1-2, a self-locking component installation slot 1-3, and an L-shaped clamping plate installation slot 1-4 are formed on one side surface of the tool rest body 1. The self-locking component installation slot 1-3 and the L-shaped clamping plate installation slot 1-4 are both located in the tool body insertion slot 1-2, and the self-locking component installation slot 1-3 is communicated with the L-shaped clamping plate installation slot 1-4 through a guide slot 1-5. During actual use, the self-locking component is installed in the self-locking component installation slot 1-3, and the L-shaped clamping plate is installed in the L-shaped clamping plate installation slot 1-4. After the tool body 5-1 is inserted into the tool body insertion slot 1-2, under the action of the self-locking component, the short side plate 4-1 of the L-shaped clamping plate can be clamped on the end surface of the tool body 5-1 close to the tool handle 5-2, so as to lock the tool body 5 in the tool body insertion slot 1-2, making it difficult for special groups such as children to easily take out the tool body 5 from this kitchen knife rest, thereby improving the use safety of the kitchen knife and this kitchen knife rest.

[0033] As Figure 2 , Figure 4 and Figure 5As shown in the figure, in this embodiment, the self-locking assembly includes a self-locking guide and a bolt 8. The self-locking guide includes a base plate 6-1, a guide rod 6-2 and a baffle 6-3. The top of the guide rod 6-2 is provided with an inclined surface 6-2-1. By opening a heart-shaped chute on the other side of the base plate 6-1, during actual installation, one end of the bolt 8 is rotatably installed on the inner wall of the self-locking assembly installation groove 1-3, and the other end of the bolt 8 is inserted into the heart-shaped chute. Since the heart-shaped chute is provided with a first step 9-4 and a second step 9-5, and the first step 9-4 and the second step 9-5 divide the heart-shaped chute into a vertical straight section 9-1, a self-locking curve section 9-2 provided at the top of the vertical straight section 9-1 and an unlocking curve section 9-3. During actual use, the working process of the self-locking of the self-locking assembly is as follows: Since the self-locking guide is connected in the self-locking assembly installation groove 1-3 through two parallel first springs 7-3, when the tool body 5-1 is inserted into the tool body insertion groove 1-2 from top to bottom, when the end surface of the tool body 5-1 on the side away from the tool handle 5-2 presses against the upper surface of the baffle 6-3, the tool body 5-1 is pressed down for the first time. The tool body 5-1 will push the baffle 6-3 to drive the guide rod 6-2 to move downward. At this time, the other end of the bolt 8 will slide upward along the vertical straight section 9-1, and under the blocking action of the first step 9-4, the other end of the bolt 8 can only continue to slide along the self-locking curve section 9-2. When the other end of the bolt 8 slides to the concave position at the top of the heart-shaped chute, the inclined surface 6-2-1 of the guide rod 6-2 is separated from the long side plate 4-2 of the L-shaped clamping plate. At this time, the second spring 11 will pop out and press against the long side plate 4-2 of the L-shaped clamping plate, driving the L-shaped clamping plate to deflect, so that the short side plate 4-1 of the L-shaped clamping plate is clamped on the end surface of the tool body 5-1 on the side close to the tool handle 5-2, achieving the purpose of locking the tool body 5-1 in the tool body insertion groove 1-2.

[0034] The working process of unlocking the self-locking assembly is as follows: The tool body 5-1 is pressed down for the second time. Under the guiding action of the second step 9-5, the other end of the bolt 8 can only slide along the unlocking curve section 9-3 until the other end of the bolt 8 resets to the vertical straight section 9-1. At this time, under the pulling action of the first spring 7-3, the self-locking guide gradually moves upward, so that the guide rod 6-2 pushes the long side plate 4-2 of the L-shaped clamping plate, driving the L-shaped clamping plate to deflect and squeezing the second spring 11 to contract, so that the short side plate 4-1 of the L-shaped clamping plate is separated from the end surface of the tool body 5-1 on the side close to the tool handle 5-2, thereby achieving the purpose of unlocking the tool body 5-1 from the tool body insertion groove 1-2. The operation is simple, time-saving and labor-saving, but it is not easy for special groups such as children to easily take out the tool body 5 from the chopping board rack. The use effect is high and it is convenient for popularization and application.

[0035] As Figure 2 and Figure 4As shown in the figure, in this embodiment, mounting shafts 7-1 are provided on both sides of the top end of the substrate 6-1, mounting posts 7-2 are vertically provided on the inner wall of the self-locking component mounting groove 1-3, the bottom end of the first spring 7-3 is mounted on the mounting shaft 7-1, and the top end of the first spring 7-3 is mounted on the mounting post 7-2.

[0036] During actual use, when the tool body 5-1 is inserted, the two first springs 7-3 can play a role in counteracting the driving force, preventing the tool body 5-1 from pushing the baffle 6-3 to collide with the tool holder main body 1, and extending the service life of the self-locking component; when the tool body 5-1 is pulled out, the two first springs 7-3 can reset the self-locking guide member, and the two first springs 7-3 are symmetrically arranged on both sides of the guide rod 6-2, with good stability and convenient for popularization and application.

[0037] As Figure 4 shown in the figure, in this embodiment, fixed shafts 10 are provided on both side walls of the L-shaped clamping plate mounting groove 1-4, and both ends of the long side plate 4-2 of the L-shaped clamping plate are respectively rotatably mounted on the two fixed shafts 10.

[0038] During actual use, the long side plate 4-2 of the L-shaped clamping plate can rotate around the two fixed shafts 10, thereby driving the short side plate 4-1 of the L-shaped clamping plate to deflect.

[0039] In this embodiment, the number of the tool holder main bodies 1 ranges from 3 to 6, the thickness of the tool holder main body 1 ranges from 50 mm to 70 mm, the thickness of the first cover plate 2 ranges from 3 mm to 5 mm, and the thickness of the second cover plate 3 ranges from 15 mm to 20 mm.

[0040] As Figure 2 and Figure 4 shown in the figure, in this embodiment, a relief groove 1-1 is formed on another side surface of the tool holder main body 1, multiple tool holder main bodies 1 are positioned by pins, the first cover plate 2, the second cover plate 3 and multiple tool holder main bodies 1 are fixedly connected by fastening bolts, two pin holes 13 are formed on the tool holder main body 1, and multiple threaded holes 12 are formed on the tool holder main body 1, the first cover plate 2 and the second cover plate 3.

[0041] During actual installation, multiple tool holder main bodies 1 are arranged in sequence. By forming a relief groove 1-1 on another side surface of the tool holder main body 1, the relief groove 1-1 and the tool body insertion groove 1-2 are buckled to form a cavity for accommodating the tool body 5-1. When the tool body 5-1 is inserted from top to bottom, it can prevent the tool body 5-1 from contacting another side surface of the tool holder main body 1, and the phenomenon that the tool body 5-1 is damaged due to friction between the tool body 5-1 and another side surface of the tool holder main body 1 will not occur.

[0042] During actual machining, the number of pins is two, and the pin holes 13 on multiple tool rest bodies 1 need to be machined by fitting. Under the precise positioning of the two pins, the fastening accuracy between multiple tool rest bodies 1 and the installation accuracy of the self-locking assembly inside the tool rest body 1 can be ensured.

[0043] As Figure 1 and Figure 2 shown, during actual use, the user inserts the tool body 5-1 into the tool body insertion groove 1-2 from top to bottom. By pressing down the tool body 5-1 for the first time, the short side plate 4-1 of the L-shaped clamping plate can be clamped on the end face of the tool body 5-1 close to the tool handle 5-2, and the tool body 5-1 can be locked in the tool body insertion groove 1-2. By pressing down the tool body 5-1 for the second time, the short side plate 4-1 of the L-shaped clamping plate can be separated from the end face of the tool body 5-1 close to the tool handle 5-2, and the tool body 5-1 can be unlocked from the tool body insertion groove 1-2.

[0044] The above are only the preferred embodiments of the present invention, and do not impose any limitations on the present invention. Any simple modifications, changes, and equivalent structural changes made to the above embodiments according to the technical essence of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. A kitchen knife rack with a self-locking function, characterized in that: It includes a tool rest assembly, a first cover plate (2) and a second cover plate (3) respectively arranged on both sides of the tool rest assembly. The tool rest assembly includes a tool rest body (1), a self-locking assembly arranged inside the tool rest body (1), and an L-shaped clamping plate matched with the self-locking assembly. A tool body insertion slot (1-2), a self-locking assembly installation slot (1-3) communicated with the tool body insertion slot (1-2), and an L-shaped clamping plate installation slot (1-4) are formed on one side surface of the tool rest body (1). The self-locking assembly installation slot (1-3) is communicated with the L-shaped clamping plate installation slot (1-4) through a guiding slot (1-5). The self-locking assembly includes a self-locking guiding part and a plug pin (8) matched with the self-locking guiding part. The self-locking guiding part is connected in the self-locking assembly installation slot (1-3) through two parallelly arranged first springs (7-3). The self-locking guiding part includes a base plate (6-1), a guide rod (6-2) connected to the top end of the base plate (6-1) and matched with the guiding slot (1-5), and a baffle plate (6-3) vertically installed on one side surface of the base plate (6-1) and located at the bottom end of the base plate (6-1). A heart-shaped sliding slot is formed on the other side surface of the base plate (6-1). One end of the plug pin (8) is rotatably installed on the inner wall of the self-locking assembly installation slot (1-3), and the other end of the plug pin (8) is inserted into the heart-shaped sliding slot. A first step (9-4) and a second step (9-5) are arranged in the heart-shaped sliding slot. The first step (9-4) and the second step (9-5) divide the heart-shaped sliding slot into a vertical straight segment (9-1), a self-locking curve segment (9-2) arranged at the top end of the vertical straight segment (9-1), and an unlocking curve segment (9-3). An inclined surface (6-2-1) for contacting with the long side plate (4-2) of the L-shaped clamping plate is arranged at the top end of the guide rod (6-2). The long side plate (4-2) of the L-shaped clamping plate is rotatably installed in the L-shaped clamping plate installation slot (1-4). A second spring (11) for pressing on the long side plate (4-2) of the L-shaped clamping plate is arranged in the L-shaped clamping plate installation slot (1-4).

2. The kitchen knife rack with a self-locking function according to claim 1, characterized in that: Installation shafts (7-1) are arranged on both sides of the top end of the base plate (6-1). Installation columns (7-2) are vertically arranged on the inner wall of the self-locking assembly installation slot (1-3). The bottom end of the first spring (7-3) is installed on the installation shaft (7-1), and the top end of the first spring (7-3) is installed on the installation column (7-2).

3. A kitchen knife rack with a self-locking function according to claim 1, characterized in that: Fixed shafts (10) are arranged on both side walls of the L-shaped clamping plate installation slot (1-4). Both ends of the long side plate (4-2) of the L-shaped clamping plate are respectively rotatably installed on the two fixed shafts (10).

4. A kitchen knife rack with a self-locking function according to claim 1, characterized in that: The number of the tool rest bodies (1) ranges from 3 to 6. The thickness of the tool rest body (1) ranges from 50 mm to 70 mm. The thickness of the first cover plate (2) ranges from 3 mm to 5 mm. The thickness of the second cover plate (3) ranges from 15 mm to 20 mm.

5. The kitchen knife rack with a self-locking function according to claim 4, characterized in that: A relief groove (1-1) is provided on another side surface of the tool rest body (1). A plurality of the tool rest bodies (1) are positioned by pins. The first cover plate (2), the second cover plate (3) and the plurality of tool rest bodies (1) are fixedly connected by fastening bolts. Two pin holes (13) are provided on the tool rest body (1). A plurality of threaded holes (12) are provided on the tool rest body (1), the first cover plate (2) and the second cover plate (3).

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