Conductive foam cutting equipment

Abstract

The utility model relates to the technical field of conductive foam cutting, in particular to conductive foam cutting equipment which comprises a workbench, a knife rest arranged on one side of the upper portion of the workbench, a vertically-moving cutting knife arranged below the knife rest, and a vertical elastic pressing rod assembly arranged on the outer side of the cutting knife and used for pressing the surface of foam to be cut. A horizontal pressing rod assembly for clamping and limiting the side wall of foam to be cut is arranged on the side, opposite to the tool rest, of the workbench, the vertical elastic pressing rod assembly comprises an elastic lifting rod perpendicularly penetrating through the top wall of the tool rest, and an arc-shaped pressing plate making contact with the foam to be cut is arranged at the bottom end of the elastic lifting rod. The horizontal pressing rod assembly comprises fixing plates which are symmetrically arranged and perpendicular to the cutting knife, elastic horizontal rods penetrate through the fixing plates, and limiting plates making contact with the side wall of the foam are arranged at the ends, facing the middle, of the elastic horizontal rods. The problem that the foam quality is affected due to the fact that foam cutting deviation is easily caused by the fact that existing foam cutting mostly adopts side wall clamping and limiting is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of conductive foam cutting, in particular to conductive foam cutting equipment. Background Art

[0002] Conductive foam refers to a flame-retardant sponge wrapped with conductive cloth. After a series of treatments, it has good surface conductivity and can be easily fixed on the device to be shielded with adhesive tape. Because of its very light material, it can have the performance of electromagnetic shielding. The electrostatic protection performance of the leading product is both permanent and widely used in optoelectronics, microelectronics, aviation, aerospace, communications, military, chemical engineering and other fields; after the conductive foam is produced by the molding machine, it needs to be cut according to the actual finished product needs. In order to ensure the cutting accuracy during cutting, the foam needs to be cut. In order to effectively position the foam, the current foam positioning method is mostly to clamp and limit the side of the foam, and then cut the foam with a cutting knife. However, the thickness of foams on the market is different. When cutting thinner foam, since the foam is softer, clamping and limiting the foam side wall may easily cause the foam to shift. When cutting thicker foam, although the foam can be effectively clamped by the side wall, when the cutting knife is cutting, the foam on both sides of the cut surface is pressed down by the cutting knife due to the large pressure, which may cause the edges to warp, thereby causing the cut surface to be skewed, thereby affecting the quality of the foam after cutting. Utility Model Content

[0003] 1. Technical issues to be resolved

[0004] In view of the deficiencies in the prior art, the utility model provides a conductive foam cutting device, which solves the problem that the current foam cutting mostly adopts side wall clamping and limiting, which easily leads to foam cutting deviation, thereby affecting the foam quality.

[0005] (II) Technical solution

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a conductive foam cutting device, comprising a workbench, a knife holder is provided on one side above the workbench, a vertically movable cutting knife is provided below the knife holder, a vertical elastic pressure rod assembly is provided on the outer side of the cutting knife to press the surface of the foam to be cut, and a horizontal pressure rod assembly is provided on the workbench on the opposite side of the knife holder to clamp and limit the side wall of the foam to be cut;

[0007] The vertical elastic pressure rod assembly includes an elastic lifting rod vertically penetrating the top wall of the tool holder, and the bottom end of the elastic lifting rod is provided with an arc-shaped pressing plate in contact with the foam to be cut;

[0008] The horizontal pressure rod assembly comprises a fixing plate which is symmetrically arranged and perpendicular to the cutting knife, an elastic horizontal rod passes through the fixing plate, and a limiting plate which contacts the foam side wall is arranged at the end of the elastic horizontal rod facing the middle.

[0009] Preferably, there are no less than four groups of elastic lifting rods, which are symmetrically arranged on both sides of the cutting knife. The elastic lifting rods include a movable rod that vertically penetrates the top wall of the knife holder. A reset spring is provided on the outer side of the movable rod below the top wall of the knife holder. The bottom end of the reset spring is fixed to the top wall of the arc-shaped pressing plate, and the top end is fixed to the bottom surface of the top wall of the knife holder.

[0010] Preferably, the arc-shaped pressing plate includes a horizontal contact plate fixedly connected to the bottom end of the movable rod, and the side walls of the horizontal contact plate parallel to the cutting knife are provided with arc-shaped beveled edges extending toward the outside and upward, and the middle part of the horizontal contact plate corresponding to the lifting position of the cutting knife is provided with an opening for the cutting knife to pass through when it is lifted and lowered.

[0011] Preferably, the fixed plates are in two groups, which are symmetrically fixed on both sides of the workbench perpendicular to the cutting knife; the elastic horizontal rods are no less than six groups, and the arrangement direction of the elastic horizontal rods is perpendicular to the fixed plates. The elastic horizontal rods include horizontal movable rods that penetrate the fixed plates, and a second return spring is provided on the outer side of the horizontal movable rod on the side of the fixed plate toward the middle of the workbench, one end of the second return spring is fixed to the outer side wall of the limit plate, and the other end is fixed to the side wall of the fixed plate toward the middle of the workbench.

[0012] Preferably, the arrangement direction of the limit plates is perpendicular to the cutting blade; and the outer end of the horizontal moving rod is fixedly connected with a limit bar for preventing the horizontal moving rod from being dislocated.

[0013] Preferably, the cutting knife comprises a blade perpendicular to the workbench, and a hydraulic assembly for adjusting the downward pressure of the blade is provided on the top of the knife holder, and an output end of the hydraulic assembly is fixedly connected to the middle of the top wall of the blade.

[0014] (III) Beneficial effects

[0015] Compared with the prior art, the utility model provides a conductive foam cutting device having the following

[0016] Beneficial effects:

[0017] A vertical elastic pressure rod assembly is arranged on the outside of the cutting knife to press the foam on the outside of the cutting position. When the foam is pushed to the bottom of the knife holder, the foam is pushed to the bottom of the horizontal contact plate through the arc-shaped bevel edge. Due to the elastic force of the return spring, the return spring presses the horizontal contact plate downward to make it in close contact with the top wall of the foam. When the cutting knife descends to cut the foam, the foam on both sides of the cutting position of the cutting knife is pressed by the horizontal contact plate to avoid the foam from warping during cutting and ensure that the cutting surface is flat. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0019] Figure 1 This is an overall schematic diagram of the conductive foam cutting device of the utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the vertical elastic pressure rod assembly of the utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the horizontal pressure rod assembly of the utility model.

[0022] Description of reference numerals:

[0023] 1. Workbench; 2. Tool holder; 3. Cutting knife; 31. Blade; 32. Hydraulic assembly; 4. Vertical elastic pressure rod assembly; 41. Elastic lifting rod; 411. Movable rod; 412. Return spring; 42. Arc-shaped pressing plate; 421. Horizontal contact plate; 422. Arc-shaped bevel; 423. Opening; 5. Horizontal pressure rod assembly; 51. Fixed plate; 52. Elastic horizontal rod; 521. Horizontal moving rod; 522. Second return spring; 523. Limiting strip; 53. Limiting plate. DETAILED DESCRIPTION

[0024] The following will describe the implementation methods of the present application in detail with the help of accompanying drawings and examples, so that the implementation process of how the present application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0025] Figure 1-3 As an embodiment of the utility model, a conductive foam cutting device comprises a workbench 1, a tool holder 2 is provided on one side above the workbench 1, a cutting knife 3 which moves vertically is provided below the tool holder 2, the cutting knife 3 comprises a blade 31 which is perpendicular to the workbench 1, a hydraulic assembly 32 which adjusts the downward pressure of the blade 31 is provided on the top of the tool holder 2, the output end of the hydraulic assembly 32 is fixedly connected to the middle part of the top wall of the blade 31, a vertical elastic pressure rod assembly 4 which presses the surface of the foam to be cut is provided on the outer side of the cutting knife 3, a horizontal pressure rod assembly 5 which clamps and limits the side wall of the foam to be cut is provided on the workbench 1 on the side opposite to the tool holder 2, in actual work, the foam to be cut is pushed into the workbench 1 on the side opposite to the tool holder 2, when pushing the foam, the foam is firstly clamped and limited by the horizontal pressure rod assembly 5 so that the foam can move vertically with the cutting knife 3, when the foam is pushed to the bottom of the tool holder 2, it first contacts with the vertical elastic pressure rod assembly 4, so that the vertical elastic pressure rod assembly 4 presses the cutting position of the foam to prevent the foam from warping when cutting;

[0026] The vertical elastic pressure rod assembly 4 includes an elastic lifting rod 41 which vertically penetrates the top wall of the tool holder 2. The bottom end of the elastic lifting rod 41 is provided with an arc-shaped pressing plate 42 which contacts the foam to be cut. In actual work, when the foam is pushed to the bottom of the tool holder 2, it first contacts the arc-shaped pressing plate 42, pushes the arc-shaped pressing plate 42 upward, and causes the elastic lifting rod 41 to rise so that the foam can continue to move under the arc-shaped pressing plate 42.

[0027] There are multiple groups of elastic lifting rods 41, which are symmetrically arranged on both sides of the cutting knife 3. The elastic lifting rods 41 include a movable rod 411 that vertically penetrates the top wall of the knife holder 2. A return spring 412 is arranged on the outer side of the movable rod 411 below the top wall of the knife holder 2. The bottom end of the return spring 412 is fixed to the top wall of the arc-shaped pressing plate 42, and the top end is fixed to the bottom surface of the top wall of the knife holder 2. The arc-shaped pressing plate 42 includes a horizontal contact plate 421 fixedly connected to the bottom end of the movable rod 411. The side walls of the horizontal contact plate 421 parallel to the cutting knife 3 are provided with arc-shaped beveled edges 422 extending toward the outside and upward. The middle part of the horizontal contact plate 421 is provided with an opening 423 for the cutting knife 3 to be lifted and lowered corresponding to the lifting position of the cutting knife 3. In actual work, the arc-shaped pressing plate 42 is pressed and lowered due to the thrust of the return spring 412 and the working The surface of the table 1 is in contact. When the foam is pushed to the bottom of the knife holder 2, the side wall of the foam first abuts against the arc-shaped beveled edge 422. Since the connection between the arc-shaped beveled edge 422 and the horizontal contact plate 421 is an arc surface, the foam can be smoothly pushed under the horizontal contact plate 421, and the arc-shaped pressing plate 42 is pushed upward as a whole. At this time, the arc-shaped pressing plate 42 pushes the movable rod 411 to move upward, and compresses the reset spring 412. At the same time, due to the elastic force of the reset spring 412, the reset spring 412 presses the horizontal contact plate 421 downward to ensure that the horizontal contact plate 421 can be in close contact with the top wall of the foam. When the cutting knife 3 descends through the opening 423 to cut the foam, the foam on both sides of the cutting position of the cutting knife 3 is pressed by the horizontal contact plate 421 to prevent the foam from curling up during cutting.

[0028] The horizontal pressure rod assembly 5 includes a fixed plate 51 that is symmetrically arranged and perpendicular to the cutting knife 3, an elastic horizontal rod 52 passes through the fixed plate 51, and a limit plate 53 is provided at the end of the elastic horizontal rod 52 facing the middle and in contact with the foam side wall. The fixed plate 51 is divided into two groups, which are symmetrically fixed on both sides of the workbench 1 perpendicular to the cutting knife 3. The elastic horizontal rod 52 is divided into multiple groups, and the arrangement direction of the elastic horizontal rod 52 is perpendicular to the fixed plate 51. The elastic horizontal rod 52 includes a horizontal moving rod 521 that passes through the fixed plate 51, and a second return spring 522 is provided on the outer side of the horizontal moving rod 521 located on the side of the fixed plate 51 facing the middle of the workbench 1. One end of the second return spring 522 is fixed to the outer side wall of the limit plate 53, and the other end is fixed to the side wall of the fixed plate 51 facing the middle of the workbench 1. The arrangement direction of the limit plate 53 is perpendicular to the cutting knife 3. The two ends of 53 are provided with rounded corners to facilitate the passage of foam, and the outer end of the horizontal moving rod 521 is fixedly connected with a limit strip 523 to prevent the horizontal moving rod 521 from being dislocated. In actual work, according to the width of the foam, the staff manually pulls the limit strip 523 toward the outside, so that the limit strip 523 drives the horizontal moving rod 521 and the limit plate 53 to open toward the outside, and then pushes the foam horizontally from the edge of the workbench 1 on the opposite side of the tool holder 2 into between the two sets of limit plates 53, and releases the limit strip 523. At this time, due to the elastic force of the second return spring 522, the limit plate 53 is pushed toward the side wall of the foam. When the limit plate 53 contacts the side walls on both sides of the foam, when the foam continues to be pushed toward the bottom of the tool holder 2, the limit plate 53 is vertically arranged with the cutting knife 3, so that the foam is limited, thereby realizing the vertical movement of the foam toward the cutting knife 3.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A conductive foam cutting device, comprising a workbench (1), characterized in that: A knife holder (2) is provided on one side above the workbench (1), a vertically movable cutting knife (3) is provided below the knife holder (2), a vertical elastic pressure rod assembly (4) is provided on the outer side of the cutting knife (3) for pressing the surface of the foam to be cut, and a horizontal pressure rod assembly (5) is provided on the workbench (1) on the side opposite to the knife holder (2) for clamping and limiting the side wall of the foam to be cut; The vertical elastic pressure rod assembly (4) comprises an elastic lifting rod (41) vertically penetrating the top wall of the knife holder (2), and the bottom end of the elastic lifting rod (41) is provided with an arc-shaped pressing plate (42) in contact with the foam to be cut; The horizontal pressure rod assembly (5) comprises a fixing plate (51) which is symmetrically arranged and perpendicular to the cutting knife (3), an elastic horizontal rod (52) passing through the fixing plate (51), and a limiting plate (53) which contacts the foam side wall is provided at the end of the elastic horizontal rod (52) facing the middle.

2. A conductive foam cutting device according to claim 1, characterized in that: The elastic lifting rods (41) are multiple groups and are symmetrically arranged on both sides of the cutting knife (3). The elastic lifting rods (41) include a movable rod (411) vertically penetrating the top wall of the knife holder (2). A return spring (412) is provided on the outside of the movable rod (411) below the top wall of the knife holder (2). The bottom end of the return spring (412) is fixed to the top wall of the arc-shaped pressing plate (42), and the top end is fixed to the bottom surface of the top wall of the knife holder (2).

3. A conductive foam cutting device according to claim 2, characterized in that: The arc-shaped pressing plate (42) comprises a horizontal contact plate (421) fixedly connected to the bottom end of the movable rod (411); the side walls of the horizontal contact plate (421) parallel to the cutting knife (3) are provided with arc-shaped oblique edges (422) extending upwardly and outwardly; and the middle part of the horizontal contact plate (421) corresponding to the lifting position of the cutting knife (3) is provided with an opening (423) for the cutting knife (3) to pass through when lifting.

4. The conductive foam cutting device according to claim 1, characterized in that: The fixing plates (51) are in two groups and are symmetrically fixed on two sides of the workbench (1) perpendicular to the cutting blade (3); The elastic horizontal rods (52) are multiple groups, and the arrangement direction of the elastic horizontal rods (52) is perpendicular to the fixed plate (51). The elastic horizontal rods (52) include a horizontal movable rod (521) that penetrates the fixed plate (51). A second return spring (522) is provided on the outer side of the horizontal movable rod (521) located on the side of the fixed plate (51) facing the middle of the workbench (1). One end of the second return spring (522) is fixed to the outer side wall of the limiting plate (53), and the other end is fixed to the side wall of the fixed plate (51) facing the middle of the workbench (1).

5. The conductive foam cutting device according to claim 4, characterized in that: The arrangement direction of the limiting plates (53) is perpendicular to the cutting blade (3); The outer end of the horizontal moving rod (521) is fixedly connected to a limiting strip (523) for preventing the horizontal moving rod (521) from being dislocated.

6. The conductive foam cutting device according to claim 1, characterized in that: The cutting knife (3) comprises a blade (31) perpendicular to the workbench (1); a hydraulic assembly (32) for adjusting the downward pressure of the blade (31) is provided on the top of the knife holder (2); an output end of the hydraulic assembly (32) is fixedly connected to the middle of the top wall of the blade (31).

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