Adjustable lower tool apron assembly of steel screen machine

Abstract

The utility model relates to an adjustable lower cutter holder assembly of a steel screen machine, which comprises a lower cutter holder, a lower cutter, a front lower cutter height fine-tuning assembly, a front lower cutter gap fine-tuning assembly, an adjuster, a rear lower cutter height fine-tuning assembly and a rear lower cutter gap fine-tuning assembly, the lower cutter holder is arranged on the front side of the upper end of a lower beam of a machine tool body, and the adjuster is arranged behind the lower cutter holder. A mounting groove is formed in the upper end of the front side of the lower tool apron, the lower tool is arranged in the mounting groove, the front lower tool height fine adjustment assembly is mounted on the lower tool apron and connected with the lower tool, the rear lower tool height fine adjustment assembly is arranged behind the adjuster and used for being connected with the front lower tool height fine adjustment assembly, and the front lower tool gap fine adjustment assembly is mounted on the lower tool apron and used for being connected with the rear lower tool height fine adjustment assembly. The rear lower cutter gap fine adjustment assembly is installed at the upper end of the lower beam of the machine tool body, and the front lower cutter gap fine adjustment assembly and the rear lower cutter gap fine adjustment assembly are connected with the adjuster. The device has the advantage that the gap and the height of the lower cutter can be finely adjusted from the front or the rear under the condition of no shutdown.

Description

Technical Field

[0001] The utility model relates to the technical field of expanded metal processing, and particularly relates to an adjustable lower tool rest assembly for an expanded metal machine. Background Art

[0002] The current adjustment method for the lower tool rest of an expanded metal machine is mainly to pad paper or a feeler gauge piece between the lower tool and the lower tool rest. This method has the characteristics of simple operation, convenience, easy operation, easy mastery, and low processing cost. However, it also has the following disadvantages:

[0003] 1) It is necessary to stop the machine during adjustment, and it is impossible to adjust while punching during continuous production. Moreover, it is easy to break when punching the net after stopping and adjusting, and the adjustment efficiency is low;

[0004] 2) It cannot be adjusted infinitely and precisely, and the adjustment quality is poor;

[0005] 3) The tool die is easily deformed by vibration, impact and temperature, resulting in instability during expanded metal processing. This is a common problem that traditional expanded metal machines have been unable to solve;

[0006] 4) The defective product rate is high, the product quality control is difficult, the quality is uneven, and the production cost is high.

[0007] In view of this, there is an urgent need in the current market for a device for adjusting the lower tool rest that is efficient, precise, stable and easy to operate. Summary of the Utility Model

[0008] The technical problem to be solved by the utility model is to provide an adjustable lower tool rest assembly for an expanded metal machine, which effectively overcomes the defects of the prior art.

[0009] The technical solution of the utility model for solving the above technical problems is as follows:

[0010] An adjustable lower knife seat assembly for a expanded metal machine, comprising a lower knife seat, a lower knife, a front lower knife height fine-tuning assembly, a front lower knife gap fine-tuning assembly and a regulator, a rear lower knife height fine-tuning assembly and a rear lower knife gap fine-tuning assembly. The above-mentioned lower knife seat is arranged on the front side of the upper end of the lower beam of the machine tool body and extends in the left-right direction, and is installed on the upper end of the lower beam of the machine tool body through a first bolt. The above-mentioned regulator is a plate-shaped member extending in the left-right direction and is arranged behind the above-mentioned lower knife seat and is installed on the upper end of the lower beam of the machine tool body through a second bolt. An installation groove extending in the left-right direction is provided at the upper end of the front side of the above-mentioned lower knife seat. The above-mentioned lower knife extends in the left-right direction and is arranged in the above-mentioned installation groove. The above-mentioned front lower knife height fine-tuning assembly is installed on the above-mentioned lower knife seat and is connected to the above-mentioned lower knife for adjusting the height of the above-mentioned lower knife. The above-mentioned rear lower knife height fine-tuning assembly is arranged behind the above-mentioned regulator and is used to be connected to the above-mentioned front lower knife height fine-tuning assembly for driving the above-mentioned front lower knife height fine-tuning assembly to operate so as to adjust the height of the above-mentioned lower knife through the above-mentioned front lower knife height fine-tuning assembly. The above-mentioned front lower knife gap fine-tuning assembly is installed on the above-mentioned lower knife seat, and the above-mentioned rear lower knife gap fine-tuning assembly is installed on the upper end of the lower beam of the machine tool body. The above-mentioned front lower knife gap fine-tuning assembly and the rear lower knife gap fine-tuning assembly are respectively connected to the above-mentioned regulator for finely adjusting the displacement of the above-mentioned lower knife seat in the front-rear direction from the front and rear respectively through the regulator.

[0011] Based on the above technical solution, the present utility model can also be improved as follows.

[0012] Further, a plurality of first screw holes penetrating through it in the front-rear direction are spaced apart in the left-right direction on the above-mentioned lower knife. Lower knife pressing screws are respectively installed in the above-mentioned first screw holes. The above-mentioned lower knife pressing screws are threadedly connected to the side wall of the above-mentioned installation groove, and the nuts of the above-mentioned lower knife pressing screws are located on the front side of the above-mentioned lower knife.

[0013] Further, the above-mentioned front lower knife height fine-tuning component includes a plurality of corresponding front lower knife height adjustment screws, lower knife height adjustment wedge blocks, lower knife height adjustment wedge guide columns and return springs. A plurality of second screw holes penetrating through the lower knife seat in the front-rear direction are provided at intervals in the left-right direction. A square counterbore is opened at the front end of the second screw hole. A plurality of the above-mentioned front lower knife height adjustment screws respectively penetrate through a plurality of the above-mentioned second screw holes in a one-to-one correspondence and are screwed with the corresponding second screw holes. The lower knife height adjustment wedge block is square and is arranged in the corresponding counterbore. A return spring is connected between the rear end of the lower knife height adjustment wedge block and the bottom wall of the counterbore. The front lower knife height adjustment screw penetrates through the lower knife height adjustment wedge block and the return spring and is threadedly connected with the lower knife height adjustment wedge block. A guide hole penetrating through the upper end of the counterbore in the vertical direction is provided. The lower knife height adjustment wedge guide column is installed in the guide hole, and its upper end abuts against the lower end of the lower knife. Wedge surfaces that match each other are provided at the upper end of the lower knife height adjustment wedge block and the lower end of the lower knife height adjustment wedge guide column. The front lower knife height adjustment screw is used to rotate under the action of an external force, so as to drive the lower knife height adjustment wedge block to move back and forth along the counterbore, and then drive the lower knife height adjustment wedge guide column to move up and down along the guide hole, so as to finely adjust the local height of the lower knife. The rear lower knife height fine-tuning component is connected to the rear end of the front lower knife height adjustment screw.

[0014] Further, the above-mentioned rear lower knife height fine-tuning component includes a plurality of rear lower knife height adjustment screws. A plurality of the above-mentioned rear lower knife height adjustment screws respectively penetrate through the adapted through holes on the adjuster in the front-rear direction and are respectively connected and fixed to the rear ends of a plurality of the above-mentioned front lower knife height adjustment screws in a one-to-one correspondence. A rubber sleeve is installed in the through hole, and the rubber sleeve is sleeved outside the rear lower knife height adjustment screw.

[0015] Furthermore, the above-mentioned front lower tool clearance fine-tuning assembly includes multiple groups of corresponding front lower tool set screws and front lower tool locking screws. The multiple groups of the above-mentioned front lower tool set screws and front lower tool locking screws extend along the front-rear direction respectively and are spaced apart along the left-right direction. Multiple third screw holes corresponding to the above-mentioned front lower tool set screws are provided at intervals along the left-right direction on the above-mentioned lower tool holder. The above-mentioned front lower tool set screws penetrate through the corresponding above-mentioned third screw holes and abut against the front side of the above-mentioned regulator. Multiple first positioning through holes corresponding to the above-mentioned front lower tool locking screws are provided at intervals along the left-right direction on the above-mentioned lower tool holder. The above-mentioned front lower tool locking screws penetrate through the corresponding above-mentioned first positioning through holes, and the end of its screw is threadedly connected to the fourth screw hole adapted to the front side of the above-mentioned regulator; the above-mentioned rear lower tool clearance fine-tuning assembly includes multiple groups of corresponding rear lower tool set screws and rear lower tool locking screws. An installation beam extending along the left-right direction is provided at the rear end of the upper end of the lower beam of the machine tool body. Multiple groups of the above-mentioned rear lower tool set screws are respectively distributed behind the above-mentioned regulator and are coaxial and corresponding to multiple above-mentioned front lower tool set screws. Multiple groups of the above-mentioned rear lower tool locking screws are respectively distributed behind the above-mentioned regulator and are coaxial and corresponding to multiple above-mentioned front lower tool locking screws. The multiple groups of the above-mentioned rear lower tool locking screws extend along the front-rear direction respectively and are spaced apart along the left-right direction behind the above-mentioned regulator and are coaxial and corresponding to multiple above-mentioned front lower tool locking screws. Multiple fifth screw holes corresponding to the above-mentioned rear lower tool set screws are provided at intervals along the left-right direction on the above-mentioned installation beam. The above-mentioned rear lower tool set screws penetrate through the corresponding above-mentioned fifth screw holes and abut against the rear side of the above-mentioned regulator. Multiple second positioning through holes corresponding to the above-mentioned rear lower tool locking screws are provided at intervals along the left-right direction on the above-mentioned installation beam. The above-mentioned rear lower tool locking screws penetrate through the corresponding above-mentioned second positioning through holes, and the end of its screw is threadedly connected to the fifth screw hole adapted to the rear side of the above-mentioned regulator.

[0016] Furthermore, concave pits corresponding to the above-mentioned front lower tool set screws and rear lower tool set screws are respectively provided on the front and rear sides of the above-mentioned regulator.

[0017] Furthermore, the above-mentioned first bolt penetrates through the upper end of the lower beam of the machine tool body from bottom to top and is threadedly connected to the lower end of the above-mentioned lower tool holder. The above-mentioned second bolt penetrates through the upper end of the lower beam of the machine tool body from bottom to top and is threadedly connected to the lower end of the above-mentioned regulator.

[0018] The beneficial effects of the present utility model are as follows: It realizes the two-way adjustment of the clearance and height of the lower tool in the front and rear of the machine tool, can be adjusted while the machine is in production without stopping, which is simple, convenient, fast and greatly improves production efficiency; it realizes stepless and precise adjustment, and can achieve fine adjustment of the flatness of the expanded metal mesh surface and the short intercept of the mesh holes by controlling the clearance and straightness of the lower tool; it can effectively control the deformation of the tool die caused by vibration, impact and temperature during the production process. Description of the Drawings

[0019] Figure 1Front view of the adjustable lower knife seat assembly of the expanded metal machine of the present utility model;

[0020] Figure 2 Side view of the adjustable lower knife seat assembly of the expanded metal machine of the present utility model;

[0021] Figure 3 Top view of the adjustable lower knife seat assembly of the expanded metal machine of the present utility model;

[0022] Figure 4 Axonometric view of the adjustable lower knife seat assembly of the expanded metal machine of the present utility model from one perspective;

[0023] Figure 5 Axonometric view of the adjustable lower knife seat assembly of the expanded metal machine of the present utility model from another perspective;

[0024] Figure 6 Exploded view of the adjustable lower knife seat assembly of the expanded metal machine of the present utility model from one perspective;

[0025] Figure 7 Exploded view of the adjustable lower knife seat assembly of the expanded metal machine of the present utility model from another perspective.

[0026] In the attached drawings, the list of components represented by each reference numeral is as follows:

[0027] 1. Lower knife seat; 2. Lower knife; 3. Front lower knife height fine-tuning assembly; 4. Front lower knife gap fine-tuning assembly; 5. Regulator; 6. Rear lower knife height fine-tuning assembly; 7. Rear lower knife gap fine-tuning assembly; 8. Machine tool body lower beam; 21. Lower knife pressing screw; 31. Front lower knife height adjustment screw; 32. Lower knife height adjustment wedge block; 33. Lower knife height adjustment wedge guide post; 34. Return spring; 41. Front lower knife set screw; 42. Front lower knife locking screw; 61. Rear lower knife height adjustment screw; 71. Rear lower knife set screw; 72. Rear lower knife locking screw; 81. Installation beam. Detailed implementation mode

[0028] The principles and features of the present utility model will be described below with reference to the attached drawings. The examples given are only for explaining the present utility model and are not intended to limit the scope of the present utility model.

[0029] Example: As Figures 1 to 7As shown in the figure, the adjustable lower knife seat assembly of the expanded metal machine in this embodiment includes a lower knife seat 1, a lower knife 2, a front lower knife height fine-tuning assembly 3, a front lower knife gap fine-tuning assembly 4 and a regulator 5, a rear lower knife height fine-tuning assembly 6 and a rear lower knife gap fine-tuning assembly 7. The above-mentioned lower knife seat 1 is arranged on the front side of the upper end of the lower beam 8 of the machine tool body and extends along the left-right direction, and is installed on the upper end of the lower beam 8 of the machine tool body through the first bolt. The above-mentioned regulator 5 is a plate-shaped member extending along the left-right direction and is arranged behind the above-mentioned lower knife seat 1 and is installed on the upper end of the lower beam 8 of the machine tool body through the second bolt. An installation groove extending along the left-right direction is provided at the upper end of the front side of the above-mentioned lower knife seat 1. The above-mentioned lower knife 2 extends along the left-right direction and is arranged in the above-mentioned installation groove. The above-mentioned front lower knife height fine-tuning assembly 3 is installed on the above-mentioned lower knife seat 1 and is connected to the above-mentioned lower knife 2 for adjusting the height of the above-mentioned lower knife 2. The above-mentioned rear lower knife height fine-tuning assembly 6 is arranged behind the above-mentioned regulator 5 and is used to be connected to the above-mentioned front lower knife height fine-tuning assembly 3 for driving the above-mentioned front lower knife height fine-tuning assembly 3 to operate so as to adjust the height of the above-mentioned lower knife 2 through the above-mentioned front lower knife height fine-tuning assembly 3. The above-mentioned front lower knife gap fine-tuning assembly 4 is installed on the above-mentioned lower knife seat 1, and the above-mentioned rear lower knife gap fine-tuning assembly 7 is installed on the upper end of the lower beam 8 of the machine tool body. The above-mentioned front lower knife gap fine-tuning assembly 4 and the rear lower knife gap fine-tuning assembly 7 are respectively connected to the above-mentioned regulator 5 for respectively fine-tuning the displacement of the above-mentioned lower knife seat 1 in the front-rear direction through the regulator 5 from the front and rear sides.

[0030] In the adjustable lower knife seat assembly of the expanded metal machine in this embodiment, since the lower knife seat 1 and the regulator 5 are respectively installed on the upper end of the lower beam 8 of the machine tool body through the first bolt and the second bolt, therefore, it is allowed to fine-tune the displacement (spacing) of the lower knife seat 1 in the front-rear direction. Specifically, the installation height of the lower knife 2 on the lower knife seat 1 is fine-tuned through the front lower knife height fine-tuning assembly 3 in the front of the machine tool, and the rear lower knife height fine-tuning assembly 6 drives the front lower knife height fine-tuning assembly 3 to operate in the rear of the machine tool to realize the fine-tuning of the height of the lower knife 2; the front lower knife gap fine-tuning assembly 4 is operated in the front side to drive the regulator 5 and the lower knife seat 1 to move slightly back and forth to realize the gap fine-tuning, and the rear lower knife gap fine-tuning assembly 7 is operated in the rear side to drive the regulator 5 and the lower knife seat 1 to move slightly back and forth to realize the gap fine-tuning. Overall, it has the following advantages:

[0031] 1) It realizes the adjustment of the lower tool gap and height both in the front and in the rear, and can be adjusted while the machine is in production without stopping, which is simple, convenient, fast and greatly improves the production efficiency.

[0032] 2) It realizes stepless and precise adjustment, can fine-tune the flatness of the expanded metal surface and the short intercept of the mesh holes by controlling the gap and straightness of the lower tool, and can form a self-locking after adjustment, with precise, stable and efficient adjustment.

[0033] 3) It can effectively control the deformation of the knife die during the production process due to vibration, impact, and temperature effects, solving the common problems that the expanded metal mesh machine has been unable to solve for a long time.

[0034] 4) Under the condition of continuous production without stopping the network, the clearance and height of the lower tool can be adjusted, which more effectively improves the product quality and production efficiency.

[0035] As a preferred implementation manner, a plurality of first screw holes penetrating through the upper edge of the lower knife 2 in the left-right direction are distributed at intervals, and lower knife pressing screws 21 are respectively installed in the first screw holes. The lower knife pressing screws 21 are threadedly connected to the side wall of the installation groove, and the nuts of the lower knife pressing screws 21 are located on the front side of the lower knife 2.

[0036] In the above implementation scheme, the lower knife 2 is assembled on the side wall of the installation groove through the lower knife pressing screws 21 penetrating through it, and the operation is relatively simple and convenient.

[0037] As a preferred implementation manner, the front lower knife height fine-tuning assembly 3 includes a plurality of corresponding front lower knife height adjustment screws 31, lower knife height adjustment wedge blocks 32, lower knife height adjustment wedge guide columns 33, and return springs 34. The lower knife seat 1 is provided with a plurality of second screw holes penetrating through it at intervals in the left-right direction. A square counterbore (designated as A in the figure) is opened at the front end of the second screw holes. A plurality of the front lower knife height adjustment screws 31 respectively penetrate through a plurality of the second screw holes and are screwed with the corresponding second screw holes. The lower knife height adjustment wedge blocks 32 are square and are arranged in the corresponding counterbores. A return spring 34 is connected between the rear end of the lower knife height adjustment wedge block 32 and the bottom wall of the counterbore. The front lower knife height adjustment screws 31 penetrate through the lower knife height adjustment wedge blocks 32 and the return springs 34 and are threadedly connected to the lower knife height adjustment wedge blocks 32. A guide hole penetrating through it vertically is provided at the upper end of the counterbore. The lower knife height adjustment wedge guide columns 33 are installed in the guide holes, and their upper ends abut against the lower end of the lower knife 2. Wedge surfaces that match each other are provided at the upper end of the lower knife height adjustment wedge block 32 and the lower end of the lower knife height adjustment wedge guide column 33. The front lower knife height adjustment screws 31 are used to rotate under the action of an external force, so as to drive the lower knife height adjustment wedge blocks 32 to move back and forth along the counterbores, thereby driving the lower knife height adjustment wedge guide columns 33 to move up and down along the guide holes to finely adjust the local height of the lower knife 2. The rear lower knife height fine-tuning assembly 6 is connected to the rear end of the front lower knife height adjustment screw 31.

[0038] In the above embodiments, during fine adjustment, turn the front lower tool height adjustment screw 31. Since the lower tool height adjustment wedge block 32 is screwed with the front lower tool height adjustment screw 31, and the lower tool height adjustment wedge block 32 is restricted in the counterbore and will not rotate with the front lower tool height adjustment screw 31, when the front lower tool height adjustment screw 31 rotates, the lower tool height adjustment wedge block 32 will only move back and forth along the counterbore. Also, since the upper end of the lower tool height adjustment wedge block 32 and the lower end of the lower tool height adjustment wedge guide post 33 are provided with mating wedge surfaces, during the forward and backward micro-movement of the lower tool height adjustment wedge block 32, the lower tool height adjustment wedge guide post 33 is driven to move up and down microscopically. When moving upward, it can slightly lift a part of the lower tool 2, thereby achieving high-precision adjustment of the height of the lower tool 2. Through the coordinated adjustment of multiple front lower tool height adjustment screws 31 until the lower tool 2 meets the straightness requirement, this design is relatively reasonable and the operation is relatively simple and convenient.

[0039] As a preferred embodiment, the above-mentioned rear lower tool height fine adjustment assembly 6 includes a plurality of rear lower tool height adjustment screws 61. The plurality of rear lower tool height adjustment screws 61 respectively penetrate through the corresponding through holes on the adjuster 5 in the front-rear direction and are respectively fixedly connected to the rear ends of the plurality of front lower tool height adjustment screws 31 one by one. Rubber sleeves are installed in the through holes, and the rubber sleeves are sleeved outside the rear lower tool height adjustment screws 61.

[0040] In the above embodiments, since the front end of the rear lower tool height adjustment screw 61 is fixedly connected to the rear end of the front lower tool height adjustment screw 31 one by one, during rear adjustment, turning the rear lower tool height adjustment screw 61 can drive the front lower tool height adjustment screw 31 to rotate, and then, according to the fine adjustment principle of the front lower tool height adjustment screw 31, high-precision fine adjustment of the height of the lower tool 2 can be achieved from the rear. This structural design is ingenious and the operation is relatively simple and convenient. It should be noted that since the rear lower tool height adjustment screw 61 has a certain length, it may shake when turned. Therefore, the rear lower tool height adjustment screw 61 passes through the through hole on the adjuster 5 and is connected to the inner wall of the through hole through a rubber sleeve, which can play a certain role in straightening the rear lower tool height adjustment screw 61 and ensure stable and effective adjustment.

[0041] As a preferred embodiment, the above-mentioned front lower tool clearance fine-tuning assembly 4 includes multiple groups of corresponding front lower tool set screws 41 and front lower tool locking screws 42. The multiple groups of the above-mentioned front lower tool set screws 41 and front lower tool locking screws 42 extend along the front-back direction respectively and are spaced apart along the left-right direction. Multiple third screw holes corresponding to the above-mentioned front lower tool set screws 41 are provided on the lower tool holder 1 at intervals along the left-right direction. The above-mentioned front lower tool set screws 41 penetrate through the corresponding third screw holes and abut against the front side of the regulator 5. Multiple first positioning through holes corresponding to the above-mentioned front lower tool locking screws 42 are provided on the lower tool holder 1 at intervals along the left-right direction. The above-mentioned front lower tool locking screws 42 penetrate through the corresponding first positioning through holes, and the screw ends thereof are threadedly connected to the fourth screw holes adapted to the front side of the regulator 5; the above-mentioned rear lower tool clearance fine-tuning assembly 7 includes multiple groups of corresponding rear lower tool set screws 71 and rear lower tool locking screws 72. An installation beam 81 extending along the left-right direction is provided at the rear end of the upper end of the machine tool lower beam 8. The multiple groups of the above-mentioned rear lower tool set screws 71 are respectively distributed behind the regulator 5 and are in one-to-one correspondence and coaxial distribution with the multiple above-mentioned front lower tool set screws 41. The multiple groups of the above-mentioned rear lower tool locking screws 72 are respectively distributed behind the regulator 5 along the front-back direction and are spaced apart along the left-right direction, and are in one-to-one correspondence and coaxial distribution with the multiple above-mentioned front lower tool locking screws 42. Multiple fifth screw holes corresponding to the above-mentioned rear lower tool set screws 71 are provided on the installation beam 81 at intervals along the left-right direction. The above-mentioned rear lower tool set screws 71 penetrate through the corresponding fifth screw holes and abut against the rear side of the regulator 5. Multiple second positioning through holes corresponding to the above-mentioned rear lower tool locking screws 72 are provided on the installation beam 81 at intervals along the left-right direction. The above-mentioned rear lower tool locking screws 72 penetrate through the corresponding second positioning through holes, and the screw ends thereof are threadedly connected to the fifth screw holes adapted to the rear side of the regulator 5.

[0042] In the above embodiments, since the front lower tool fixing screw 41 is threadedly connected to the lower tool holder 1, the front lower tool locking screw 42 is threadedly connected to the front side of the adjuster 5, the rear lower tool fixing screw 71 is threadedly connected to the mounting beam 81, and the rear lower tool locking screw 72 is threadedly connected to the adjuster 5. Therefore, when fine-tuning the clearance on the front side, turn the front lower tool locking screw 42. Since the nut of the front lower tool locking screw 42 abuts against the front end of the lower tool holder 1, when tightened, the lower tool holder 1 will be driven to move slightly backward locally. At the same time, turn the rear lower tool fixing screw 71 on the rear side to make it abut against a part of the adjuster 5, realizing the fine-tuning operation of "pulling forward and pushing backward"; similarly, when adjusting the clearance on the rear side, turn the rear lower tool locking screw 72. Since the nut of the rear lower tool locking screw 72 abuts against the rear end of the mounting beam 81, when tightened, the adjuster 5 will move slightly backward, and at the same time, pull the lower tool holder 1 to move slightly backward locally through the front lower tool locking screw 42. At the same time, turn the front lower tool fixing screw 41 on the front side to make it abut against the part of the adjuster 5 that moves slightly, realizing the fine-tuning operation of "pulling backward and pushing forward". Overall, the structural design is very ingenious and reasonable, and it can realize the fine-tuning of the front and rear clearances of the lower tool holder 1 and the lower tool 2 installed thereon in two directions.

[0043] In this embodiment, pits corresponding to the front lower tool fixing screw 41 and the rear lower tool fixing screw 71 are respectively provided on the front and rear sides of the above adjuster 5. The end parts of the front lower tool fixing screw 41 and the rear lower tool fixing screw 71 respectively extend into the corresponding pits, realizing positioning installation to a certain extent.

[0044] In this embodiment, the above first bolt penetrates through the upper end of the lower beam 8 of the machine tool body from bottom to top and is threadedly connected to the lower end of the lower tool holder 1. The above second bolt penetrates through the upper end of the lower beam 8 of the machine tool body from bottom to top and is threadedly connected to the lower end of the adjuster 5. Among them, multiple first bolts are distributed at the left and right ends of the lower tool holder 1, and multiple second bolts are distributed at the left and right ends of the adjuster 5. The connection of the bolts allows the lower tool holder 1 and the adjuster 5 to realize fine-tuning of the clearance in the front and rear directions.

[0045] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 to the present invention.

[0046] In addition, the terms "first" and "second" are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0047] In the present utility model, unless otherwise clearly specified and defined, terms such as "installed", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0048] In the present utility model, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature is at a higher horizontal level than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature is at a lower horizontal level than the second feature.

[0049] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0050] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present utility model.

Claims

1. An adjustable lower knife seat assembly for an expanded metal machine, characterized in that: The invention comprises a lower knife seat (1), a lower knife (2), a front lower knife height fine-adjustment assembly (3), a front lower knife gap fine-adjustment assembly (4) and an adjuster (5), a rear lower knife height fine-adjustment assembly (6) and a rear lower knife gap fine-adjustment assembly (7), wherein the lower knife seat (1) is arranged at the front side of the upper end of a lower beam (8) of a machine bed, extends in the left-right direction, and is mounted on the upper end of the lower beam (8) of the machine bed through a first bolt, the adjuster (5) is a plate-shaped component extending in the left-right direction, and is arranged behind the lower knife seat (1), and is mounted on the upper end of the lower beam (8) of the machine bed through a second bolt, the upper end of the front side of the lower knife seat (1) is provided with a mounting groove extending in the left-right direction, the lower knife (2) extends in the left-right direction and is arranged in the mounting groove, the front lower knife height fine-adjustment assembly (3) is mounted on the lower knife seat ( 1) and connected to the lower knife (2) for adjusting the height of the lower knife (2); the rear lower knife height fine-adjusting component (6) is arranged behind the regulator (5) and connected to the front lower knife height fine-adjusting component (3) for driving the front lower knife height fine-adjusting component (3) to operate so as to adjust the height of the lower knife (2) through the front lower knife height fine-adjusting component (3); the front lower knife gap fine-adjusting component (4) is mounted on the lower knife seat (1); the rear lower knife gap fine-adjusting component (7) is mounted on the upper end of the lower beam (8) of the machine bed; the front lower knife gap fine-adjusting component (4) and the rear lower knife gap fine-adjusting component (7) are respectively connected to the regulator (5) and are respectively used to fine-adjust the displacement of the lower knife seat (1) in the front and rear directions through the regulator (5) from the front and rear sides.

2. The adjustable lower knife seat assembly of the expanded metal machine according to claim 1, characterized in that: The lower knife (2) is provided with a plurality of first screw holes extending therethrough from front to back and spaced apart in the left-right direction. Lower knife clamping screws (21) are respectively installed in the first screw holes. The lower knife clamping screws (21) are threadedly connected to the side wall of the mounting groove. The nut of the lower knife clamping screw (21) is located at the front side of the lower knife (2).

3. The adjustable lower knife seat assembly of the expanded metal machine according to claim 1, characterized in that: The front lower knife height fine-adjusting assembly (3) comprises a plurality of one-to-one corresponding front lower knife height adjustment screw rods (31), a lower knife height adjustment wedge block (32), a lower knife height adjustment wedge guide column (33) and a return spring (34). The lower knife seat (1) is provided with a plurality of second screw holes extending therethrough in a front-to-back direction at intervals along the left-right direction. The front ends of the second screw holes are provided with square countersunk holes. The plurality of front lower knife height adjustment screw rods (31) respectively and one-to-one correspond to the plurality of second screw holes and are screwed into the corresponding second screw holes. The lower knife height adjustment wedge block (32) is square and is arranged in the corresponding countersunk holes. The return spring (34) is connected between the rear end of the lower knife height adjustment wedge block (32) and the bottom wall of the countersunk hole. The front lower knife height adjustment screw rod (31) extends through the lower knife height adjustment wedge block (32). ) and a return spring (34), and is threadedly connected to the lower knife height adjustment wedge block (32); the upper end of the countersunk hole is provided with a guide hole vertically penetrating therethrough; the lower knife height adjustment wedge guide column (33) is installed in the guide hole, and its upper end is abutted against the lower end of the lower knife (2); the upper end of the lower knife height adjustment wedge block (32) and the lower end of the lower knife height adjustment wedge guide column (33) are provided with wedge surfaces that match each other; the front lower knife height adjustment screw (31) is used to rotate under the action of external force, thereby driving the lower knife height adjustment wedge block (32) to move forward and backward along the countersunk hole, thereby driving the lower knife height adjustment wedge guide column (33) to move up and down along the guide hole to fine-tune the local height of the lower knife (2); the rear lower knife height fine-tuning component (6) is connected to the rear end of the front lower knife height adjustment screw (31).

4. The adjustable lower knife seat assembly of the expanded metal machine according to claim 3, characterized in that: The rear lower knife height fine-adjustment assembly (6) comprises a plurality of rear lower knife height adjustment screws (61), wherein the plurality of rear lower knife height adjustment screws (61) respectively penetrate through holes adapted on the adjuster (5) in the front-to-back direction and are respectively connected and fixed to the rear ends of the plurality of front lower knife height adjustment screws (31) in a one-to-one correspondence, wherein a rubber sleeve is installed in the through hole, and the rubber sleeve is arranged outside the rear lower knife height adjustment screw (61).

5. The adjustable lower knife holder assembly of the expanded metal machine according to any one of claims 1 to 4, characterized in that: The front lower knife gap fine-adjusting assembly (4) comprises a plurality of groups of front lower knife fixing screws (41) and front lower knife locking screws (42) which correspond to each other. The plurality of groups of front lower knife fixing screws (41) and front lower knife locking screws (42) extend in the front-to-back direction respectively and are spaced apart in the left-to-right direction. The lower knife seat (1) is spaced apart in the left-to-right direction to form a plurality of third screw holes which correspond to the front lower knife fixing screws (41). The front lower knife fixing screws (41) pass through the corresponding third screw holes and are engaged with the third screw holes of the adjuster (5). The front side of the lower knife seat (1) is abutted against each other, and a plurality of first positioning through holes corresponding to the front lower knife locking screws (42) are arranged on the lower knife seat (1) at intervals along the left and right directions. The front lower knife locking screws (42) pass through the corresponding first positioning through holes, and the end of the screw is threadedly connected with the fourth screw hole adapted to the front side of the adjuster (5); the rear lower knife gap fine-tuning component (7) includes a plurality of groups of rear lower knife fixing screws (71) and rear lower knife locking screws (72) corresponding to each other, and the rear end of the upper end of the lower beam (8) of the machine body is provided with a plurality of first positioning through holes corresponding to the front lower knife locking screws (42) at intervals along the left and right directions. The mounting beam (81) extends in the longitudinal direction, a plurality of groups of rear lower knife fixing screws (71) are respectively distributed behind the adjuster (5), and correspond one-to-one with the plurality of front lower knife fixing screws (41) and are coaxially distributed, a plurality of groups of rear lower knife locking screws (72) are respectively distributed and extend in the longitudinal direction with the front lower knife locking screws (42), and are spaced apart in the left-right direction behind the adjuster (5), and correspond one-to-one with the plurality of front lower knife locking screws (42) and are coaxially distributed, and the mounting beam (81) is provided with a plurality of rear lower knife fixing screws (71) and a plurality of rear lower knife fixing screws (72) on the upper side of the mounting beam (8 ... A plurality of fifth screw holes corresponding to the rear lower knife fixing screws (71) are arranged at intervals in the left-right direction, and the rear lower knife fixing screws (71) pass through the corresponding fifth screw holes and abut against the rear side of the adjuster (5); a plurality of second positioning through holes corresponding to the rear lower knife locking screws (72) are arranged at intervals in the left-right direction on the mounting beam (81), and the rear lower knife locking screws (72) pass through the corresponding second positioning through holes, and the screw ends are threadedly connected to the fifth screw holes adapted to the rear side of the adjuster (5).

6. The adjustable lower knife seat assembly of the expanded metal machine according to claim 5, characterized in that: The front and rear sides of the adjuster (5) are respectively provided with pits corresponding to the front lower knife fixing screw (41) and the rear lower knife fixing screw (71).

7. An adjustable lower knife holder assembly for an expanded metal machine according to any one of claims 1 to 4, characterized in that: The first bolt passes through the upper end of the lower beam (8) of the machine bed from bottom to top and is threadedly connected to the lower end of the lower tool holder (1); the second bolt passes through the upper end of the lower beam (8) of the machine bed from bottom to top and is threadedly connected to the lower end of the adjuster (5).

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