Tool apron, adjustable tool apron assembly and flat plate cutting machine

Abstract

The utility model discloses a tool apron, an adjustable tool apron assembly and a flat plate cutting machine. The tool apron comprises a shell. The tailstock is arranged at the upper end of the inner side of the shell; the tail pad is embedded in the tailstock, and the lower pad is arranged at the lower end of the inner side of the shell; the upper pad is embedded on the lower pad; the bearing is positioned between the upper pad and the tail pad; one end of the cutter upwards penetrates through the lower pad, the upper pad and the bearing and is inserted into the tail pad, and the other end of the cutter extends out of the lower end of the shell; the spring is sleeved on the cutter, and two ends of the spring are respectively sleeved on the bearing and the tail pad. According to the cutter holder, the problem that gaps exist when a cutter is installed in a traditional cutter holder is solved, errors in the cutting process are further reduced, and the cutting precision of the flat plate cutting machine is improved; according to the flat plate cutting machine, the cutting precision of the flat plate cutting machine can be improved only by replacing the tool apron, the capability of finely adjusting the cutting track in the cutting process is obtained, the use scene of a common flat plate cutting machine is expanded with extremely low cost, meanwhile, the consumption of the cutter is saved, and the production cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of flat cutting, and particularly relates to a tool holder, an adjustable tool holder assembly and a flat cutting machine. Background Art

[0002] A drag-knife type flat cutting machine is a film cutting machine widely used in various industries. The hard alloy cutting tool with a cylindrical tool shank is installed on the cutting machine through a detachable tool holder. This tool holder enables the cutting tool to freely rotate around an axis to change the cutting direction, so that a film with a complex shape can be quickly cut out along with the movement of the cutting machine. In the thermal spraying industry, this equipment is also needed to make a masking tape with a specific shape to assist in spraying operations on a specific area.

[0003] In the manufacturing process of the lower electrode for FPD, there is a surface floating point pattern. The floating point forming requires attaching a perforated plate to the electrode surface, then thermally spraying a ceramic material, and then removing the perforated plate, so that dense floating points corresponding to the holes on the perforated plate can be left on the electrode surface. The medium for fixing the perforated plate on the electrode surface is double-sided tape. When the floating point spacing is small, the whole double-sided tape needs to be attached to one side of the perforated plate, and then strip-shaped contours are cut at the positions between the holes, and then all the double-sided tape except the strip-shaped part is removed, so that strip-shaped double-sided tape for fixing can be left on the surface of the perforated plate. The forming effect of laser cutting is good, but the price is expensive, and black residues after cutting the double-sided tape will be left on the surface of the perforated plate, which has a chance of contaminating the electrode surface. Using a flat cutting machine for double-sided tape cutting has a much lower cost than laser cutting and will not produce any residues.

[0004] Although the use cost of the flat cutting machine is much lower than that of the laser cutting machine, most of the flat cutting machines on the market use a positioning mechanism of a stepper motor + synchronous belt. The advantage of this mechanism is that the hardware cost is low and the control system is relatively simple. However, the accuracy is difficult to match that of the positioning mechanism using a servo motor. Moreover, because there is no position feedback component, the tiny errors generated by multiple movements will accumulate, and finally the position of the cutting end point will deviate greatly from the prediction.

[0005] In order to realize the free rotation of the cutting tool in the tool holder, a cutting tool mounting hole slightly larger than the diameter of the tool shank of the cutting tool is used on the tool holder, or a small bearing is used, and the tool shank of the cutting tool is directly inserted into the inner hole of the bearing for fixation. However, due to the existence of gaps in both of these two structures, the cutting tool can shake slightly, further reducing the cutting accuracy.

[0006] In the cutting of ordinary films, including the cutting of special-shaped masking tapes for thermal spraying, the lack of precision of ordinary flatbed cutting machines is not sufficient to cause problems. However, when cutting double-sided tapes on perforated plates, in order to ensure that more area of the double-sided tape is left to ensure sufficient adhesion, it is necessary to cut close to the edge of the holes. At this time, the lack of precision of the cutting machine will cause the cutting tool to fall into the holes on the perforated plate during the cutting process, thus breaking the cutting tool. This not only wastes the cutting tool, but also requires suspending the cutting process after the cutting tool is broken, replacing the cutting tool and adjusting the position of the perforated plate, greatly increasing the processing time.

[0007] Therefore, a tool holder, an adjustable tool holder assembly and a flatbed cutting machine are designed to solve the above problems.

[0008] It should be noted that the above introduction of the technical background is only for the convenience of clearly and completely explaining the technical solution of the present invention and facilitating the understanding of those skilled in the art. It cannot be considered that the above technical solutions are well known to those skilled in the art just because these solutions are described in the background art part of the present invention. Summary of the Invention

[0009] To overcome the above deficiencies in the prior art, the purpose of the present invention is to provide an adjustable tool holder for a flatbed cutting machine.

[0010] To achieve the above purpose and other related purposes, the technical solution provided by the present invention is: a tool holder, which includes:

[0011] A housing;

[0012] A tailstock, which is arranged at the upper end inside the housing;

[0013] A tail pad, which is embedded in the tailstock,

[0014] A lower pad, which is arranged at the lower end inside the housing;

[0015] An upper pad, which is embedded in the lower pad;

[0016] A bearing, which is located between the upper pad and the tail pad;

[0017] A cutting tool, one end of which passes upward through the lower pad, the upper pad, the bearing and is inserted into the tail pad, and the other end of the cutting tool extends out of the lower end of the housing;

[0018] A spring, which is sleeved on the cutting tool and its two ends are respectively sleeved on the bearing and the tail pad.

[0019] Further, a conical tip is provided at the lower end of the upper pad, and a conical groove is provided at the upper end of the lower pad, and the conical tip and the conical groove are correspondingly arranged. In this solution, the use of conical surface structures for both the upper pad and the lower pad enables them to automatically align under pressure.

[0020] Further, a vertical slot structure is provided on one side of the upper pad, and the slot structure communicates with the perforation of the cutting tool in the upper pad. In this solution, the slot structure on the upper pad enables it to reduce the inner hole under pressure, clamp the cutting tool 47, and avoid generating gaps.

[0021] Further, a scale is provided on the surface of the housing. In this solution, there is a certain eccentricity between the inner hole and the outer circle of the housing of the tool holder, and the scale is provided to facilitate fine-tuning the cutting tool to the required position.

[0022] The present utility model also provides an adjustable tool holder assembly, including the tool holder described in any one of the above solutions, and further including:

[0023] A platform, on which two mounting seats are arranged vertically;

[0024] A guide rod, which is arranged between the two mounting seats along the Z-axis direction;

[0025] A fixed arm, which is movably arranged up and down on the guide rod, and the tool holder is arranged on the fixed arm;

[0026] An electromagnet, which is arranged on one mounting seat, and the telescopic rod of the electromagnet is connected to the fixed arm and can drive the fixed arm to move up and down along the guide rod.

[0027] Further, the fixed arm is sleeved on the tool holder and is tightly connected by a fixed buckle. The upper and lower ends of the fixed buckle are both clamped to the tool holder, and the fixed buckle is detachably and tightly connected to the fixed arm by a bolt. In this solution, the tool holder can be tightly fixed on the fixed arm by tightening the screws of the fixed buckle.

[0028] Further, an engraving is provided on the fixed arm. In this solution, there is a certain eccentricity between the inner hole and the outer circle of the housing of the tool holder, so that when the tool holder rotates in the hole of the fixed arm, the position of the cutting tool will change slightly. The cutting tool is fine-tuned to the required position by the scale on the housing of the tool holder and the engraving on the fixed arm.

[0029] Further, two guide rods are provided, and the telescopic rod is arranged parallel to the guide rods and is located between the two guide rods. In this solution, setting two guide rods and arranging the telescopic rod between the two guide rods improves the stability of the operation of this structure.

[0030] The present utility model also provides a flatbed cutting machine, which includes the adjustable tool holder assembly described in any one of the above solutions.

[0031] Further, it also includes a base, on which a gantry is provided to reciprocate in the Y-axis direction. The adjustable tool holder assembly is arranged on the gantry and reciprocates in the X-axis direction on the gantry through the platform. In this solution, the main structure of the flatbed cutting machine consists of a base, a gantry, and a platform for installing the adjustable tool holder structure. The gantry reciprocates in the Y-axis direction on the base, and cooperates with the platform to reciprocate in the X-axis direction on the gantry to complete the cutting positioning on the base plane.

[0032] Due to the application of the above technical solutions, the beneficial effects of the present utility model compared with the prior art are as follows:

[0033] 1. The flatbed cutting machine designed by the present utility model solves the problem of gaps existing in the installation of the cutting tool in the traditional tool holder, further reduces the error during cutting, improves the cutting accuracy of the flatbed cutting machine, and enables the traditional flatbed cutting machine to be more applied to usage scenarios that require higher cutting accuracy.

[0034] 2. The adjustable tool holder designed by the present utility model has the same external dimensions as the ordinary tool holder. Only by replacing the tool holder can the cutting accuracy of the flatbed cutting machine be improved, and the ability to finely adjust the cutting trajectory during cutting can be obtained. It expands the usage scenarios of the ordinary flatbed cutting machine at extremely low cost, saves the consumption of cutting tools, and reduces the production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of the overall structure of the flatbed cutting machine of the present utility model;

[0036] Figure 2 It is a schematic diagram of the platform, tool holder and related structures of the present utility model;

[0037] Figure 3 It is a schematic diagram of the cross-sectional structure of the tool holder of the present utility model;

[0038] Figure 4 It is a schematic diagram of the internal structure of the tool holder of the present utility model;

[0039] In the above drawings, 1. Base; 2. Gantry; 3. Platform; 31. Electromagnet; 311. Telescopic rod; 32. Guide rod; 33. Fixed arm; 331. Engraving; 34. Buckle; 35. Mounting seat; 4. Tool holder; 40. Housing; 401. Scale; 41. Tail seat; 42. Tail pad; 43. Spring; 44. Bearing; 45. Upper pad; 451. Grooved structure; 46. Lower pad; 47. Cutting tool. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0040] The following specific embodiments illustrate the implementation manners of the present utility model. Those skilled in the art can easily understand other advantages and effects of the present utility model from the content disclosed in this specification.

[0041] It should be noted that in the description of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed during use. It is only for the convenience of describing the present utility model 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 utility model. In addition, terms such as "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance. Terms such as "horizontal", "vertical", "hanging" do not mean that the component must be absolutely horizontal or hanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0042] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be directly connected or indirectly connected through an intermediate medium. It can be the communication inside two components. 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 situations.

[0043] In the description of the present application, it should be understood that the orientation or positional relationship indicated by orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom", etc. is usually based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description. Without contrary explanations, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the protection scope of the present application; the orientation words "inner, outer" refer to the inside and outside relative to the contour of each component itself.

[0044] The following elaborates on the preferred embodiments of the present utility model in conjunction with the drawings, so that the advantages and features of the present utility model can be more easily understood by those skilled in the art, thereby making the protection scope of the present utility model more clearly defined.

[0045] Embodiment:

[0046] See the appendix Figure 1 As shown in the figure, the flatbed cutting machine includes a base 1, on which a gantry 2 reciprocating in the Y-axis direction is provided. An adjustable tool holder 4 assembly is arranged on the gantry 2 and reciprocates in the X-axis direction on the gantry 2 through a platform 3. The main structure of the flatbed cutting machine consists of the base 1, the gantry 2, and the platform 3 for installing the adjustable tool holder 4 structure. The gantry 2 reciprocates in the Y-axis direction on the base 1, and cooperates with the platform 3 to reciprocate in the X-axis direction on the gantry 2 to complete the cutting positioning on the plane of the base 1.

[0047] See the appendix Figure 2 As shown in the figure, the adjustable tool holder 4 assembly includes a tool holder 4 and also includes a platform 3. Two mounting seats 35 are arranged up and down on the platform 3; a guide rod 32 is arranged between the two mounting seats 35 along the Z-axis direction; a fixed arm 33 is movably arranged up and down on the guide rod 32, and the tool holder 4 is arranged on the fixed arm 33; an electromagnet 31 is arranged on one mounting seat 35, and the telescopic rod 311 of the electromagnet 31 is connected to the fixed arm 33 and can drive the fixed arm 33 to move up and down along the guide rod 32. The fixed arm 33 is sleeved on the tool holder 4 and is tightly connected by a fixed buckle 34. The upper and lower ends of the fixed buckle 34 are clamped with the tool holder 4, and the fixed buckle 34 is detachably and tightly connected to the fixed arm 33 by bolts. The tool holder 4 can be tightly fixed on the fixed arm 33 by tightening the screws of the fixed buckle 34. A marking 331 is arranged on the fixed arm 33, and there is a certain eccentricity between the inner hole and the outer circle of the outer shell 40 of the tool holder 4, so that when the tool holder 4 rotates in the hole of the fixed arm 33, the position of the cutting tool 47 will change slightly. The cutting tool 47 is finely adjusted to the required position through the scale 401 on the outer shell 40 of the tool holder 4 and the marking 331 on the fixed arm 33.

[0048] There are two guide rods 32, and the telescopic rod 311 is arranged parallel to the guide rods 32 and is located between the two guide rods 32. Arranging two guide rods 32 and setting the telescopic rod 311 between the two guide rods 32 improves the running stability of this structure.

[0049] See the appendix Figure 3As shown in the figure, the tool holder 4 includes a housing 40, and a scale 401 is provided on the surface of the housing 40; there is a certain eccentricity between the inner hole and the outer circle of the housing 40 of the tool holder 4, and the scale 401 is provided to facilitate fine-tuning the cutting tool 47 to the required position. A tailstock 41 is provided at the upper end inside the housing 40; a tail pad 42 is embedded on the tailstock 41, a lower pad 46 is provided at the lower end inside the housing 40; an upper pad 45 is embedded on the lower pad 46; a conical tip is provided at the lower end of the upper pad 45, and a conical groove is provided at the upper end of the lower pad 46, and the conical tip and the conical groove are correspondingly arranged; the upper pad 45 and the lower pad 46 both adopt a conical surface structure, which can make the two automatically align under pressure. See the appendix Figure 4 As shown in the figure, a vertical slot structure 451 is provided on one side of the upper pad 45, and the slot structure 451 communicates with the perforation of the cutting tool 47 in the upper pad 45; the slot structure 451 on the upper pad 45 enables it to reduce the inner hole under the action of pressure and clamp the cutting tool 47 to avoid generating gaps. The lower pad 46, the upper pad 45 and the tail pad 42 are all made of Teflon material, which can effectively reduce the friction force. A bearing 44 is located between the upper pad 45 and the tail pad 42; a cutting tool 47, one end of the cutting tool 47 passes upward through the lower pad 46, the upper pad 45, the bearing 44 and is inserted into the tail pad 42, and the other end of the cutting tool 47 extends out of the lower end of the housing 40; a spring 43 is sleeved on the cutting tool 47 and its two ends are respectively sleeved on the bearing 44 and the tail pad 42.

[0050] See the appendix Figure 2 and the appendix Figure 3 and the appendix Figure 4As shown in the figure, on the platform 3, there is a fixed arm 33 of the tool holder 4. The telescopic rod 311 of the electromagnet 31 is connected to the fixed arm 33, driving it to move up and down along the guide rod 32 to complete the downward cutting action. The tool holder 4 is inserted into the hole of the fixed arm 33 and tightly fixed on the fixed arm 33 with a buckle 34. The front end of the outer shell 40 of the tool holder 4 is tightly fitted with a lower pad 46, and the tail seat 41 is tightly fitted with a tail pad 42. The cutting tool 47 passes through the lower pad 46, the upper pad 45, and the bearing 44, and is inserted into the hole of the tail pad 42, and is automatically centered with the tapered hole in the tail pad 42 through the tapered structure on the tool handle. The lower pad 46, the upper pad 45, and the tail pad 42 are all made of Teflon material, which can effectively reduce the friction force. A spring 43 is sleeved on the front section of the tail pad 42, and pressure is applied to the upper pad 45 through the bearing 44. The bearing 44 allows the upper pad 45 to rotate freely without being affected by the spring 43. The tapered surface structures of both the upper pad 45 and the lower pad 46 enable them to be automatically centered under pressure, and the slotted structure 451 on the upper pad 45 enables it to reduce the inner hole under pressure and clamp the cutting tool 47 to avoid generating gaps. There is a certain eccentricity between the inner hole and the outer circle of the outer shell 40 of the tool holder 4, so that when the tool holder 4 rotates in the hole of the fixed arm 33, the position of the cutting tool 47 will change slightly. The cutting tool 47 is finely adjusted to the required position through the scale 401 on the outer shell 40 of the tool holder 4 and the engraving 331 on the fixed arm 33.

[0051] Operation process:

[0052] 1. Install the cutting tool 47 into the tool holder 4 and tighten the tail seat 41.

[0053] 2. Install the tool holder 4 onto the fixed arm 33 and align the zero point of the scale 401 on the outer shell 40 of the tool holder 4 with the engraving 331 on the fixed arm 33.

[0054] 3. Tighten the screw of the fixed buckle 34 to tightly fix the tool holder 4 on the fixed arm 33.

[0055] 4. Adjust the position of the cutting edge relative to the holes on the perforated plate and start cutting.

[0056] 5. After cutting for a period of time, observe the position of the cutting trajectory relative to the holes. If the position is to the right, pause the cutting, loosen the screw of the fixed buckle 34, rotate the tool holder 4 by the required angle in the corresponding adjustment direction (such as the direction of the R0.2 scale 401), and then tighten the screw of the fixed buckle 34 and continue cutting.

[0057] 6. If the position is to the left, pause the cutting, loosen the screw of the fixed buckle 34, rotate the tool holder 4 by the required angle in the corresponding adjustment direction (such as the direction of the L0.2 scale 401), and then tighten the screw of the fixed buckle 34 and continue cutting.

[0058] The flat cutting machine designed by the utility model and including an adjustable tool holder assembly can tightly fix the cutting tool while ensuring the free rotation of the cutting tool, without generating gaps, and can finely adjust the position of the cutting tool during the cutting process, so as to compensate for the cumulative error of the cutting machine, thereby avoiding the cutting position error with random directions caused by the fixed gap of the cutting tool. The position of the cutting tool can be finely adjusted during the cutting process. When it is observed that the cutting tool is about to fall into the hole, the position of the cutting tool can be adjusted away from the hole, thereby avoiding the breakage of the cutting tool, ensuring the smooth progress of the cutting operation, and greatly reducing the loss of the cutting tool.

[0059] The above embodiments are only used to illustrate the technical concept and characteristics of the utility model, and the purpose is to enable those who are familiar with this technology to understand the content of the utility model and implement it. It cannot be used to limit the protection scope of the utility model. All equivalent changes or modifications made according to the spirit of the utility model should be covered within the protection scope of the utility model.

Claims

1. A knife holder, characterized in that: The knife seat (4) comprises: Housing (40); A tailstock (41), the tailstock (41) being arranged at an upper end of an inner side of the housing (40); a tail pad (42), wherein the tail pad (42) is embedded in the tail stock (41), A lower pad (46), the lower pad (46) being arranged at the lower end of the inner side of the outer shell (40); An upper pad (45), wherein the upper pad (45) is embedded on the lower pad (46); A bearing (44), wherein the bearing (44) is located between the upper pad (45) and the tail pad (42); a cutter (47), one end of the cutter (47) passing upward through the lower pad (46), the upper pad (45), the bearing (44) and inserted into the tail pad (42), and the other end of the cutter (47) extending out of the lower end of the housing (40); A spring (43), wherein the spring (43) is sleeved on the cutter (47) and two ends of the spring (43) are sleeved on the bearing (44) and the tail pad (42) respectively.

2. The knife holder according to claim 1, characterized in that: The lower end of the upper pad (45) is provided with a conical tip, and the upper end of the lower pad (46) is provided with a conical groove, and the conical tip and the conical groove are arranged correspondingly.

3. The knife holder according to claim 1, characterized in that: A vertical slotted structure (451) is provided on one side of the upper pad (45), and the slotted structure (451) is connected to a through hole of the cutter (47) in the upper pad (45).

4. The knife holder according to claim 1, characterized in that: The surface of the housing (40) is provided with a circle of scales (401).

5. An adjustable tool holder assembly, characterized in that: The tool holder according to any one of claims 1 to 4, further comprising: A platform (3), wherein two mounting seats (35) are arranged one above the other on the platform (3); A guide rod (32), wherein the guide rod (32) is arranged between the two mounting seats (35) along the Z-axis direction; A fixed arm (33), the fixed arm (33) being arranged on the guide rod (32) in an upward and downward movable manner, and the knife holder (4) being arranged on the fixed arm (33); An electromagnet (31) is arranged on a mounting seat (35); a telescopic rod (311) of the electromagnet (31) is connected to the fixed arm (33) and can drive the fixed arm (33) to move up and down along the guide rod (32).

6. The adjustable tool holder assembly according to claim 5, characterized in that: The fixed arm (33) is sleeved on the knife seat (4) and is fastened by a fixed buckle (34); the upper end and the lower end of the fixed buckle (34) are both fastened to the knife seat (4); the fixed buckle (34) is detachably fastened to the fixed arm (33) by bolts.

7. The adjustable tool holder assembly according to claim 5, characterized in that: The fixed arm (33) is provided with an engraving (331).

8. The adjustable tool holder assembly according to claim 5, characterized in that: Two guide rods (32) are provided, and the telescopic rod (311) is provided in parallel with the guide rods (32) and is located between the two guide rods (32).

9. A flat plate cutting machine, characterized in that: An adjustable tool holder assembly comprising any one of claims 5 to 8.

10. The flat plate cutting machine according to claim 9, characterized in that: The invention also comprises a base (1), wherein a gantry (2) which reciprocates along the Y-axis direction is arranged on the base (1), and the adjustable tool holder (4) component is arranged on the gantry (2) and reciprocates along the X-axis direction on the gantry (2) through the platform (3).

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