Knife protection device and cutting bed

Abstract

The utility model discloses a cutter protection device and a cutting bed, the cutter protection device comprises a support sleeve, a raised edge is fixedly arranged outside the support sleeve, the raised edge is parallel and opposite to a cutter, two opposite sides of the raised edge are respectively and fixedly provided with a cutter protection blade, and the cutter is clamped by the cutter protection blades; moreover, the supporting sleeve linearly reciprocates in the direction parallel to the cutter, the blade protecting piece synchronously linearly reciprocates along with the supporting sleeve, and in the cutting process, the contact area between the blade protecting piece and the cutter is increased by prolonging the length and the moving path of the blade protecting piece, so that the risk that the cutter is bent is reduced; in addition, the protruding edge is further provided with a guide wheel, the guide wheel guides relative movement between the blade protecting piece and the cutter, the guide wheel can continuously apply extrusion force to the cutter in the moving process, and the cutter is prevented from being bent. Therefore, by optimizing the cutter protection device, the protection on the cutter is enhanced, the rigidity of the cutter is improved, and the bending risk of the cutter is reduced, so that the offset of the cutter in the cutting process is reduced, and the cutting precision is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of sewing equipment, in particular to a knife protection device and a cutting machine bed. Background Art

[0002] A cutting machine bed is a cutting device used in industries such as textile and clothing, leather, automotive seats, and furniture. Generally, materials are fixed within the cutting area of the cutting table, and the materials are cut by the rotation and up-and-down reciprocating motion of a cutting knife. When the cutting knife cuts up and down, a knife protection device needs to be added to guide the cutting knife, improve the rigidity of the cutting knife, and prevent the cutting knife from bending and deforming, which affects the cutting quality.

[0003] However, the existing knife protection device uses a bearing clamping method to protect the cutting knife. This method can only provide partial protection for the cutting knife. When the cutting knife moves at high speed, due to the excessive resistance of the cut material, the unclamped part of the cutting knife is prone to complete deformation, resulting in the actual cutting path of the cutting knife deviating from the ideal cutting path. Such a large deviation seriously affects the cutting accuracy. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a knife protection device and a cutting machine bed, which solve the technical problem that the knife protection device seriously affects the cutting accuracy.

[0005] To achieve the above purpose, the utility model provides a knife protection device, including a support sleeve that moves linearly back and forth along a direction parallel to the cutting knife; a convex rib is fixedly arranged outside the support sleeve and is parallel and opposite to the cutting knife; protective blades for clamping the cutting knife are fixedly arranged on two opposite sides of the convex rib; a plurality of guide wheels rolling along the cutting knife are installed on the convex rib.

[0006] Preferably, the convex rib is integrally fixed on the outer side wall of the support sleeve, and the convex rib extends along the center line of the support sleeve.

[0007] Preferably, a linear bearing is arranged in the central hole of the support sleeve, and the linear bearing is used to support the linear movement of the support sleeve.

[0008] Preferably, the cross-section of the convex rib is triangular; the convex rib includes two symmetrically arranged left mounting surfaces and right mounting surfaces, and the protective blades include a left blade detachably mounted on the left mounting surface and a right blade detachably mounted on the right mounting surface.

[0009] Preferably, a left limiting surface is formed on one side of the left blade facing the cutting knife; a right limiting surface is formed on one side of the right blade facing the cutting knife; the left limiting surface is parallel to the right limiting surface, and the left limiting surface and the right limiting surface respectively abut against two opposite sides of the cutting knife.

[0010] Preferably, a limiting groove is formed between the left limiting surface and the right limiting surface, and the guide wheel is rotatably arranged in the limiting groove.

[0011] Preferably, a left adjusting assembly is provided between the left blade and the left mounting surface, and the left adjusting assembly is used to adjust the position of the left blade relative to the raised rib; a right adjusting assembly is provided between the right blade and the right mounting surface, and the right adjusting assembly is used to adjust the position of the right blade relative to the raised rib.

[0012] Preferably, the left adjusting assembly includes a left waist-shaped hole provided on the left blade, a left fixing groove provided on the left mounting surface, and a left locking screw passing through the left waist-shaped hole and fixed in the left fixing groove; the right adjusting assembly includes a right waist-shaped hole provided on the right blade, a right fixing groove provided on the right mounting surface, and a right locking screw passing through the right waist-shaped hole and fixed in the right fixing groove.

[0013] Preferably, both the left blade and the right blade are provided with positioning grooves that penetrate through one by one, and the positioning grooves are used to cooperate with the positioning protrusions of the grinding sand column.

[0014] The present utility model also provides a cutting machine, including the above-mentioned knife protection device.

[0015] Compared with the background art, the structure of the knife protection device of the present utility model is optimized. The optimized knife protection device includes a support sleeve, and a raised rib is fixedly provided outside the support sleeve. The raised rib is parallel and opposite to the cutting knife. Protective blades are fixedly provided on two opposite sides of the raised rib, and the cutting knife is clamped by the protective blades; moreover, the support sleeve makes a linear reciprocating movement along the direction parallel to the cutting knife, and the protective blades move linearly reciprocally synchronously with the support sleeve. During the cutting process, by extending the length and the movement path of the protective blades, the contact area between the protective blades and the cutting knife is increased, and the risk of the cutting knife bending is reduced; in addition, a guide wheel is provided on the raised rib to guide the relative movement between the protective blade and the cutting knife, and the guide wheel can also continuously apply an extrusion force to the cutting knife during the movement to prevent the cutting knife from bending. Therefore, by optimizing the knife protection device, the present utility model enhances the protection of the cutting knife, improves the stiffness of the cutting knife, reduces the risk of the cutting knife bending, thereby reducing the offset amount of the cutting knife during the cutting process, and the cutting accuracy is relatively high.

[0016] The cutting knife of the present utility model, including the above-mentioned knife protection device, has the same beneficial effects. Description of the Drawings

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the provided drawings.

[0018] Figure 1 It is the front view of the knife protection device provided by the embodiment of the present utility model;

[0019] Figure 2 For Figure 1Rear view;

[0020] Figure 3 is Figure 2 Top view of;

[0021] Figure 4 is Figure 1 Assembly drawing of the remaining components after removing the right blade;

[0022] Figure 5 is Figure 4 Assembly drawing of the remaining components after removing the guard blade;

[0023] Figure 6 is Figure 4 Another view of.

[0024] The reference numerals are as follows:

[0025] Support sleeve 1, cutting knife 2, convex rib 3, guard blade 4, guide wheel 5, left adjustment assembly 6 and right adjustment assembly 7;

[0026] Left mounting surface 31 and right mounting surface 32;

[0027] Left blade 41, right blade 42, limit groove 43, positioning groove 44;

[0028] Left limit surface 411;

[0029] Right limit surface 421. Detailed implementation manners

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0031] In order to enable those skilled in the art in this technical field to better understand the solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0032] An embodiment of the present invention discloses a guard knife device, as shown in the attached Figures 1 to 3As shown in the figure, it includes a support sleeve 1. A convex rib 3 is fixedly arranged on the outer side surface of the support sleeve 1. The convex rib 3 is parallel and opposite to the cutting knife 2. Protective blades 4 are fixedly arranged on two opposite sides of the convex rib 3 respectively. The cutting knife 2 is clamped by the protective blades 4. The contact area between the protective blade 4 and the cutting knife 2 is larger than the contact area between the existing bearing and the diameter of the cutting knife 2, reducing the risk of the cutting knife 2 bending and deforming. Moreover, the support sleeve 1 makes a linear reciprocating movement along the direction parallel to the cutting knife 2, and the protective blade 4 synchronously makes a linear reciprocating movement with the support sleeve 1. During the cutting process, by extending the length and movement path of the protective blade 4, the contact area between the protective blade 4 and the cutting knife 2 is increased, reducing the risk of the cutting knife 2 bending.

[0033] Meanwhile, as shown in the Figures 4 to 6 figure, a guide wheel 5 is also arranged on the convex rib 3. The guide wheel 5 rolls along the cutting knife 2 to guide the relative movement between the protective blade 4 and the cutting knife 2. And the guide wheel 5 can also continuously apply a squeezing force to the cutting knife 2 during the movement process, which can also prevent the cutting knife 2 from bending. As a preferred embodiment, two guide wheels 5 are arranged on the side of the convex rib 3 opposite to the cutting knife 2. The guide wheel 5 can specifically be a flexible wheel, reducing the rigid friction between the guide wheel 5 and the cutting knife 2 and achieving noise reduction during the cutting process. The flexible wheel can be made of a relatively hard flexible material.

[0034] Therefore, the structure of the knife protection device of the present utility model is optimized, the contact area with the cutting knife 2 is increased, the protection of the cutting knife 2 is enhanced, the stiffness of the cutting knife 2 is improved, the bending risk of the cutting knife 2 is reduced, thereby reducing the offset amount of the cutting knife 2 during the cutting process, and the cutting accuracy is relatively high.

[0035] An integrated design is adopted between the support sleeve 1 and the convex rib 3, that is, the convex rib 3 is integrally fixed on the outer side wall of the support sleeve 1, improving the connection strength between the convex rib 3 and the support sleeve 1, avoiding the loosening of the connection between the convex rib 3 and the support sleeve 1, which may cause the convex rib 3 to drive the protective blade 4 to swing relative to the cutting knife 2, reducing the bending deformation of the cutting knife 2 caused by the accidental movement of the convex rib 3, and improving the cutting accuracy. The convex rib 3 extends along the center line of the support sleeve 1 to ensure that the convex rib 3 is aligned with the cutting knife 2, avoiding the non-straightness of the convex rib 3 from affecting the cutting accuracy.

[0036] The support sleeve 1 is in a cylindrical shape, and a linear bearing is arranged in its central hole. The linear bearing is used to support the linear movement of the support sleeve 1. By extending the movement path of the convex rib 3 through the support sleeve 1, conditions are provided for increasing the contact area between the protective blade 4 and the cutting knife 2. The structure and working principle of the linear bearing can both refer to the prior art and will not be elaborated here.

[0037] The cross-section of the raised rib 3 is triangular, providing conditions for the two guard blades 4 to clamp the cutting knife 2. The raised rib 3 includes two symmetrically arranged left mounting surfaces 31 and right mounting surfaces 32. The left mounting surface 31 and the right mounting surface 32 are symmetrically arranged with the symmetric center plane of the raised rib 3 as the reference. In this way, the cross-section of the raised rib 3 is an isosceles triangle. The guard blade 4 includes a left blade 41 detachably mounted on the left mounting surface 31 and a right blade 42 detachably mounted on the right mounting surface 32, enabling the left blade 41 and the right blade 42 to be symmetrically arranged and facilitating the disassembly and replacement of the left blade 41 and the right blade 42.

[0038] As shown in the Figure 3 accompanying drawings, a left limiting surface 411 is formed on the side of the left blade 41 facing the cutting knife 2; a right limiting surface 421 is formed on the side of the right blade 42 facing the cutting knife 2; the left limiting surface 411 is parallel to the right limiting surface 421, and the left limiting surface 411 and the right limiting surface 421 respectively abut against the two opposite sides of the cutting knife 2. The left limiting surface 411 is an inclined surface obliquely arranged on one side of the left blade 41, and the right limiting surface 421 is an inclined surface obliquely arranged on one side of the right blade 42, enabling both the left limiting surface 411 and the right limiting surface 421 to increase the contact surface with the cutting knife 2, reduce the risk of the cutting knife 2 bending, and improve the cutting accuracy.

[0039] A limiting groove 43 is formed between the left limiting surface 411 and the right limiting surface 421. The limiting groove 43 is parallel and opposite to the outer side surface of the cutting knife 2, and the width of the limiting groove 43 is equal to the width of the cutting knife 2. The guide wheel 5 is rotatably arranged in the limiting groove 43. The setting of the limiting groove 43 provides space for the installation of the guide wheel 5 and restricts the axial movement of the guide wheel 5 along its own rotating shaft during the rolling process by the two opposite sides of the limiting groove 43, ensuring that the guide wheel 5 always rolls along the side surface of the cutting knife 2.

[0040] As shown in the Figure 1 accompanying drawings 2 and, a left adjusting assembly 6 is provided between the left blade 41 and the left mounting surface 31. The left adjusting assembly 6 is used to adjust the position of the left blade 41 relative to the raised rib 3; a right adjusting assembly 7 is provided between the right blade 42 and the right mounting surface 32. The right adjusting assembly 7 is used to adjust the position of the right blade 42 relative to the raised rib 3. The settings of the left adjusting assembly 6 and the right adjusting assembly 7 facilitate the flexible adjustment of the installation positions of the left blade 41 and the right blade 42 on the raised rib 3, thereby adjusting the distance between the left blade 41 and the right blade 42, that is, the width of the limiting groove 43, enabling the guard knife device to be applicable to cutting knives 2 of different thicknesses, with good adaptability. As a preferred embodiment, a set of left adjusting assemblies 6 are provided at both ends of the left blade 41, and a set of right adjusting assemblies 7 are provided at both ends of the right blade 42, ensuring the reliable fixation of the left blade 41 and the right blade 42, avoiding accidental bending and deformation of the cutting knife 2 due to the insecure fixation of the left blade 41 and the right blade 42, and effectively improving the cutting accuracy.

[0041] The left adjusting assembly 6 includes a left waist-shaped hole provided on the left blade 41, a left fixing groove provided on the left mounting surface 31, and a left locking screw that passes through the left waist-shaped hole and is fixed in the left fixing groove; the right adjusting assembly 7 includes a right waist-shaped hole provided on the right blade 42, a right fixing groove provided on the right mounting surface 32, and a right locking screw that passes through the right waist-shaped hole and is fixed in the right fixing groove. During adjustment, loosen the left locking screw and the right locking screw to correspondingly adjust the left blade 41 and the right blade 42. After the adjustment is in place, tighten the left locking screw and the right locking screw. The structure is relatively simple and the adjustment is relatively convenient.

[0042] As shown in the Figure 6 accompanying drawings, both the left blade 41 and the right blade 42 are provided with positioning grooves 44 that penetrate through in one-to-one correspondence. The positioning grooves 44 are used to cooperate with the positioning protrusions of the grinding sand column, which facilitates the rapid positioning of the grinding device when grinding the cutting knife 2 and makes the operation more convenient. The grinding sand column is a part of the grinding device, and the structure and installation method of the grinding sand column can refer to the prior art.

[0043] The embodiment of the present utility model also discloses a cutting knife 2, which includes the above-mentioned knife protection device and has the same beneficial effects.

[0044] It should be noted that in this specification, relational terms such as first and second are only used to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0045] Specific examples are used in this article to elaborate on the principle and implementation manner of the present utility model. The description of the above embodiments is only used to help understand the method and core idea of the present utility model. It should be pointed out that for those of ordinary skill in the art in this technical field, without departing from the principle of the present utility model, several improvements and modifications can be made to the present utility model, and these improvements and modifications also fall within the protection scope of the claims of the present utility model.

Claims

1. A knife guard device, characterized in that: The utility model comprises a support sleeve (1) which moves back and forth in a straight line in a direction parallel to a cutting knife (2); a protruding ridge (3) which is parallel to and opposite to the cutting knife (2) is fixedly provided on the outside of the support sleeve (1); blade guards (4) for clamping the cutting knife (2) are fixedly provided on two opposite sides of the protruding ridge (3); and a plurality of guide wheels (5) which roll along the cutting knife (2) are installed on the protruding ridge (3).

2. The knife guard device according to claim 1, characterized in that: The raised ridge (3) is fixedly arranged on the outer side wall of the support sleeve (1) in an integral manner, and the raised ridge (3) extends along the center line of the support sleeve (1).

3. The knife guard device according to claim 1, characterized in that: A linear bearing is provided in the center hole of the support sleeve (1), and the linear bearing is used to support the support sleeve (1) to perform linear motion.

4. The knife guard device according to any one of claims 1 to 3, characterized in that: The cross section of the raised edge (3) is triangular; the raised edge (3) comprises two symmetrically arranged left mounting surfaces (31) and right mounting surfaces (32); the blade guard (4) comprises a left blade (41) detachably mounted on the left mounting surface (31) and a right blade (42) detachably mounted on the right mounting surface (32).

5. The knife guard device according to claim 4, characterized in that: A left limiting surface (411) is formed on the side of the left blade (41) facing the cutter (2); a right limiting surface (421) is formed on the side of the right blade (42) facing the cutter (2); the left limiting surface (411) and the right limiting surface (421) are parallel to each other, and the left limiting surface (411) and the right limiting surface (421) respectively abut against two opposite sides of the cutter (2).

6. The knife guard device according to claim 5, characterized in that: A limiting groove (43) is formed between the left limiting surface (411) and the right limiting surface (421), and the guide wheel (5) is rotatably disposed in the limiting groove (43).

7. The knife guard device according to claim 4, characterized in that: A left adjustment component (6) is provided between the left blade (41) and the left mounting surface (31), and the left adjustment component (6) is used to adjust the position of the left blade (41) relative to the raised edge (3); a right adjustment component (7) is provided between the right blade (42) and the right mounting surface (32), and the right adjustment component (7) is used to adjust the position of the right blade (42) relative to the raised edge (3).

8. The knife guard device according to claim 7, characterized in that: The left adjustment component (6) comprises a left waist-shaped hole provided on the left blade (41), a left fixing groove provided on the left mounting surface (31), and a left locking screw passing through the left waist-shaped hole and fixedly provided on the left fixing groove; the right adjustment component (7) comprises a right waist-shaped hole provided on the right blade (42), a right fixing groove provided on the right mounting surface (32), and a right locking screw passing through the right waist-shaped hole and fixedly provided on the right fixing groove.

9. The knife guard device according to claim 4, characterized in that: The left blade (41) and the right blade (42) are both provided with positioning grooves (44) that penetrate therethrough in a one-to-one correspondence, and the positioning grooves (44) are used to cooperate with the positioning protrusions of the grinding sand column.

10. A cutting machine, characterized in that: The knife guard comprises the knife guard according to any one of claims 1 to 9.

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