Paperboard slotter knives, knife sets, slotting assemblies, and carton forming apparatus

Abstract

The utility model discloses a paperboard slotting cutter, cutter group, slotting assembly and carton forming equipment, include: cutter main body, the downside of cutter main body is provided with the slotting edge of inclined setting, the beginning end cutter head is set up on cutter main body, and is located the inclined lower end of slotting edge, the beginning end cutter head is set up to extend towards down, and the bottom of beginning end cutter head forms the beginning end cutter blade that is down and along the thickness direction of cutter main body and contracts the mouth, the end cutter head is set up on cutter main body, and is located the inclined upper end of slotting edge. Adopt above -mentioned scheme, provide a kind of paperboard slotting cutter, cutter group, slotting assembly and carton forming equipment that can process paperboard and form only one end closed or both ends closed strip-shaped groove.

Description

Technical Field

[0001] This utility model belongs to the field of cardboard box production equipment, specifically relating to a cardboard slotting knife, knife set, slotting assembly, and cardboard box forming equipment. Background Technology

[0002] Cardboard slotting is one of the common processes in carton forming equipment. Among them, the slotting knife is a structure used to create strip slots.

[0003] Existing grooving knives can be referenced in Chinese Patent No. 202223455244.8, which discloses a cardboard explosion-proof grooving knife and a carton forming machine. The main body is an inclined knife body with a guide head at the lower part of the inclined section and a knife head at the upper part. When it is necessary to cut grooves in the cardboard, the grooving knife faces downwards to approach the corresponding groove. The guide head first guides it into the groove to facilitate smoother insertion of the subsequent knife body, and finally, the knife head is inserted into the groove to complete the grooving process. Figure 1 The slotting of the second strip groove 92 shown.

[0004] The shortcomings of existing grooving knives are: the guide head is located at the lower part of the inclined blade body, and because the guide head does not have stable grooving ability, the cardboard needs to be horizontally offset from the guide head, resulting in all the grooves being created. Figure 1 The shape shown is of type 92, with one end open and the other closed, and it is impossible to form a second strip groove. Figure 1 The shape shown is of the type 91, where both ends are closed. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a cardboard grooving knife, knife set, grooving component and carton forming equipment that can process cardboard to form strip grooves that are closed at only one end or both ends.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A cardboard grooving knife, characterized in that it comprises: a knife body, wherein a grooving blade is provided on the lower side of the knife body at an inclined angle; a starting cutter head, wherein the starting cutter head is disposed on the knife body and located at the inclined lower end of the grooving blade, the starting cutter head extending downward, and a starting blade edge that tapers downward along the thickness direction of the knife body is formed at the bottom of the starting cutter head; and an ending cutter head, wherein the ending cutter head is disposed on the knife body and located at the inclined upper end of the grooving blade.

[0008] The present invention is further configured such that: the starting cutter head and / or the ending cutter head are provided with a shaping surface on the side away from the grooving blade, at least one of the shaping surfaces is planar, and / or, at least one of the positioning surfaces is arc-shaped.

[0009] The present invention is further configured such that: the shaping surface on the starting cutter head and the shaping surface on the ending cutter head are both planar; or, the shaping surface on the starting cutter head and the shaping surface on the ending cutter head are both arc-shaped; or, the shaping surface on the starting cutter head is planar and the shaping surface on the ending cutter head is arc-shaped; or, the shaping surface on the starting cutter head is arc-shaped and the shaping surface on the ending cutter head is planar.

[0010] The present invention is further configured such that: the bottom of the starting cutter head and / or the ending cutter head facing the grooving blade is provided with an inclined cutting surface, the inclined cutting surface being inclined upward and horizontally close to the grooving blade.

[0011] The present invention is further configured such that: the bottom of at least one of the inclined cutting surfaces and the bottom of a planar shaping surface are collinearly arranged to form a first collinear segment; and / or, at least one of the inclined cutting surfaces and a planar shaping surface intersect and are provided with a second collinear segment.

[0012] The present invention is further configured such that: the first collinear segment is a straight line segment extending along the thickness direction of the tool body; and / or, the starting cutting edge is provided with guide inclined surfaces on both sides of the tool body in the thickness direction, the two guide inclined surfaces are inclined upward and away from each other along the thickness direction of the tool body, and each guide inclined surface intersects with the inclined cutting surface and the shaping surface of the starting cutting head.

[0013] The present invention is further configured such that the second collinear segment extends on both sides along the thickness direction of the tool body and is arranged in an arc shape facing upward and horizontally close to the grooving edge.

[0014] The present invention is further configured such that: a plurality of paper-breaking teeth are provided on the first collinear segment and / or the second collinear segment.

[0015] The present invention is further configured such that: a first plane is provided on both sides of the thickness of the cutter body, and a second plane is provided on both sides of the thickness of the starting cutter head, and each second plane and the corresponding first plane are coplanar.

[0016] The present invention is further configured such that: the starting cutter head and / or the ending cutter head are provided with a first recessed notch on the side facing the grooving edge.

[0017] The present invention is further configured such that: the grooving blade includes two blade portions spaced apart along the thickness direction of the tool body and a second recessed groove located between the two blade portions.

[0018] The present invention is further configured such that: a splicing notch is provided at one end of the cutter body located at the beginning cutter head, and the splicing notch is provided with a groove bottom lower than the end cutter head.

[0019] A knife assembly, characterized in that: it includes at least two of the above-mentioned cardboard grooving knives, each of the cardboard grooving knives being fixedly arranged, and each of the cardboard grooving knives being arranged along the length direction of the knife body; the ends of two adjacent cardboard grooving knives facing each other are inserted into the splicing notch by means of the end blade tip.

[0020] A knife assembly, characterized in that: it includes a sliding frame and at least two of the above-mentioned cardboard grooving knives, wherein the track direction of the sliding frame is the same as the length direction of the knife body, and each of the cardboard grooving knives is slidably disposed on the sliding frame; at least one knife body slides to insert its end blade tip into the splicing notch of an adjacent knife body.

[0021] A knife assembly, characterized in that it comprises at least two of the aforementioned cardboard grooving knives, each of the cardboard grooving knives being arranged along the length direction of the knife body; two adjacent cardboard grooving knives may be arranged abutting each other so that the assembled cardboard grooving knives are used to punch and cut continuous grooves into the cardboard.

[0022] A grooving assembly, characterized in that it comprises: the cardboard grooving knife described above, or the knife set described above; a matching knife holder, on which a knife groove is provided; the grooving knife moves downward so that the starting cutter head, the grooving blade and the ending cutter head sequentially enter the knife groove.

[0023] A cardboard box forming device, characterized in that it includes the above-mentioned cardboard slotting knife, or the above-mentioned knife set, or the above-mentioned slotting assembly.

[0024] By adopting the above technical solution, 1. if processing is required, such as Figure 1 The first groove, which is closed at both ends, is shown. The cardboard is adjusted to the corresponding position below the cutter body. At this point, the right side of the cardboard is to the right of the starting cutter head, and the left side is to the left of the ending cutter head. Then, the grooving cutter cuts the cardboard from top to bottom, with the starting cutter head, grooving blade, and ending cutter head completely penetrating the cardboard to complete the processing of the first groove. 2. If processing such as... Figure 1The second groove, open at the right and closed at the left, is shown. Adjust the cardboard to the corresponding position below the cutter body. At this point, the right side of the cardboard is to the left of the starting cutter head, and the left side is to the left of the ending cutter head. Then, the grooving cutter cuts the cardboard from top to bottom, with the grooving blade and the ending cutter head completely penetrating the cardboard to complete the processing of the second groove. 3. Without rotating the cardboard, if processing such as... Figure 1 The third groove, shown as open on the left and closed on the right, is positioned below the main body of the cutter. The cardboard is then positioned so that the right side of the cardboard is to the right of the starting cutter head, and the left side is to the right of the ending cutter head. The grooving cutter then cuts the cardboard from top to bottom, with the starting cutter head and the grooving blade completely penetrating the cardboard to complete the third groove. 4. Because the main body of the cutter needs to be quickly inserted into the groove while completely separated from it to cut the cardboard into a groove, to prevent collision between the grooving cutter and the matching cutter holder, the starting cutter head, which enters the groove first, is positioned downwards and narrowed along the thickness of the main body of the cutter. This allows the starting cutter head to smoothly enter the groove during its rapid descent, ensuring that the starting cutter head not only has a cutting function but also a guiding function, guaranteeing the safe use of the grooving cutter. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 A schematic diagram of different groove shapes for cardboard;

[0027] Figure 2 This is an assembly drawing of Embodiment 1 of the present utility model;

[0028] Figure 3 This is an assembly drawing of Embodiment 1 of the present utility model;

[0029] Figure 4 This is a side view of Embodiment 1 of the present utility model;

[0030] Figure 5 for Figure 2 Enlarged view of A in the middle;

[0031] Figure 6 for Figure 3 Enlarged view of B in the middle;

[0032] Figure 7 This is an assembly drawing of Embodiment 2 of the present invention;

[0033] Figure 8 This is an assembly drawing of Embodiment 2 of the present invention;

[0034] Figure 9 This is an assembly drawing of Embodiment Seven of the present utility model;

[0035] Figure 10 This is a state diagram of embodiment seven of the present utility model;

[0036] Figure 11 This is a state diagram of embodiment seven of the present utility model;

[0037] Figure 12 This is a state diagram of embodiment seven of the present utility model;

[0038] Figure 13 This is a schematic diagram of Embodiment 4 of the present utility model;

[0039] Figure 14 This is a schematic diagram of Embodiment 5 of the present invention;

[0040] Figure 15 This is a schematic diagram of Embodiment Six of this utility model.

[0041] Explanation of reference numerals in the attached figures:

[0042] 1. Tool body;

[0043] 11. Grooving edge; 12. Joining notch; 13. Bottom of groove;

[0044] 2. Initial cutter head;

[0045] 21. Initial cutting edge;

[0046] 3. End cutter head;

[0047] 31. End blade;

[0048] 41. Shaping surface; 42. Inclined cutting edge surface; 43. Guide inclined surface;

[0049] 51. First collinear segment; 52. Second collinear segment; 53. Paper tearing teeth;

[0050] 61. First plane; 62. Second plane;

[0051] 7. First recessed groove;

[0052] 81. Cutting edge; 82. Second recessed notch;

[0053] 91. First groove; 92. Second groove; 93. Third groove; 94. Fourth groove; 95. Fifth groove; 96. Sixth groove; 97. Seventh groove; 98. Cardboard;

[0054] 10. Use with a tool holder;

[0055] 101. Tool Groove. Detailed Implementation

[0056] To enable those skilled in the art to better understand this utility model and to more clearly define the scope of protection claimed by this utility model, the present utility model is described in detail below with reference to certain specific embodiments. It should be noted that the following are only some specific embodiments of the present utility model, and the specific and direct descriptions of related structures are merely for the convenience of understanding the present utility model; the specific features do not necessarily or directly limit the scope of implementation of the present utility model. Conventional choices and substitutions made by those skilled in the art under the guidance of the present utility model should all be considered within the scope of protection claimed by this utility model.

[0057] Example 1:

[0058] like Figures 2-6 As shown, this utility model discloses a cardboard grooving knife, comprising:

[0059] The tool body 1 has a length direction along the left-right direction and a thickness direction along the front-back direction. A grooving blade 11 is provided on the lower side of the tool body 1. Specifically, the grooving blade 11 is inclined from the lower right to the upper left.

[0060] The starting cutter head 2 is located on the lower right side of the cutter body 1, that is, the starting cutter head 2 is located at the inclined lower end of the grooving blade 11. The starting cutter head 2 extends downward and forms a starting blade 21 at the bottom of the starting cutter head 2 that faces downward and narrows along the thickness direction of the cutter body 1.

[0061] The end cutter head 3 is located on the lower left side of the cutter body 1, that is, the end cutter head 3 is located at the inclined upper end of the grooving blade 11. The end cutter head 3 extends downward and forms an end cutting edge 31 at the bottom of the end cutter head 3.

[0062] Therefore, 1. If processing is required, such as Figure 1 The first strip groove 91, which is closed at both ends, is shown. The cardboard 98 is adjusted to the corresponding position below the cutter body 1. At this time, the right side of the cardboard 98 is to the right of the starting cutter head 2, and the left side of the cardboard 98 is to the left of the ending cutter head 3. Then, the grooving cutter grooves the cardboard 98 from top to bottom. The starting cutter head 2, the grooving blade 11, and the ending cutter head 3 completely penetrate the cardboard 98 to complete the processing of the first strip groove 91; 2. If processing such as... Figure 1The second groove 92, which is open at the right end and closed at the left end, is shown. The cardboard 98 is adjusted to the corresponding position below the cutter body 1. At this time, the right side of the cardboard 98 is to the left of the starting cutter head 2, and the left side of the cardboard 98 is to the left of the ending cutter head 3. Then, the grooving cutter grooves the cardboard 98 from top to bottom, and the grooving blade 11 and the ending cutter head 3 completely penetrate the cardboard 98 to complete the processing of the second groove 92; 3. Without rotating the cardboard 98, if processing such as... Figure 1 The third strip groove 93, which is open at the left end and closed at the right end, is shown. The cardboard 98 is adjusted to the corresponding position below the cutter body 1. At this time, the right side of the cardboard 98 is located to the right of the starting cutter head 2, and the left side of the cardboard 98 is located to the right of the ending cutter head 3. Then, the grooving cutter grooves the cardboard 98 from top to bottom. The starting cutter head 2 and the grooving blade 11 completely penetrate the cardboard 98 to complete the processing of the third strip groove 93. 4. Since the cutter body 1 needs to be quickly inserted into the cutter groove 101 to cut the cardboard 98 into a strip groove while completely separated from the cutter groove 101, in order to prevent the grooving cutter from colliding with the matching cutter holder 10 that sets the cutter groove 101, the starting cutter blade 21 that enters the cutter groove 101 first is set to be downward and narrowed along the thickness direction of the cutter body 1. This allows the starting cutter blade 21 to smoothly enter the cutter groove 101 during the rapid downward movement. This enables the starting cutter head 2 to not only have a cutting function but also a guiding function, ensuring the safe use of the grooving cutter.

[0063] In this embodiment, the starting cutter head 2 and the ending cutter head 3 are provided with a shaping surface 41 on the side away from the groove blade 11, and each shaping surface 41 is a plane perpendicular to the left and right direction.

[0064] Therefore, since the shaping surface 41 is planar, the processing results in... Figure 1 When the first strip groove 91, the second strip groove 92, and the third strip groove 93 are formed, the closed end of the corresponding strip groove is a straight line extending back and forth.

[0065] In this embodiment, the bottom of the starting cutter head 2 and the ending cutter head 3 facing the grooving blade 11 is provided with an inclined cutting surface 42. The inclined cutting surface 42 is inclined upward and horizontally close to the grooving blade 11. The bottom of each inclined cutting surface 42 and the bottom of the corresponding shaping surface 41 are collinear to form a first collinear segment 51.

[0066] Therefore, the combination of the inclined blade surface 42 and the shaping surface 41 forms a starting blade 21 and a ending blade 31 with pointed ends, which can smoothly cut the cardboard 98.

[0067] Among them, the first collinear segment 51 is a straight line segment extending along the thickness direction of the tool body 1.

[0068] In addition, the starting cutting edge 21 is provided with guide inclined surfaces 43 on both sides of the thickness direction of the tool body 1. The two guide inclined surfaces 43 are inclined upward and away from each other along the thickness direction of the tool body 1. Each guide inclined surface 43 intersects with the inclined cutting edge 42 of the starting cutting head 2 and the shaping surface 41 of the starting cutting head 2.

[0069] Therefore, the downward-facing constriction of the initial cutting edge 21 is achieved by setting two guide inclined surfaces 43, so as to ensure the smoothness of the initial cutting edge 21 when entering the cutting groove 101. Furthermore, the sharpness of the initial cutting edge 21 is ensured by directly connecting the corresponding inclined cutting edge 42 and the shaping surface 41 through the guide inclined surfaces 43, thereby ensuring the smoothness of grooving.

[0070] Preferably, in this embodiment, the blade body 1 has a first plane 61 on both sides of its thickness, and the starting blade head 2 has a second plane 62 on both sides of its thickness. Each second plane 62 and the corresponding first plane 61 are coplanar, so that the grooving blade can smoothly advance and retract relative to the cardboard 98 under the action of the first plane 61 and the second plane 62 under the coplanar arrangement.

[0071] In this embodiment, the starting cutter head 2 and the ending cutter head 3 are provided with a first recessed groove 7 on the side facing the grooving blade 11. The first recessed groove 7 not only plays a role in reducing weight, but also provides a space for the waste material to be cut off when the cardboard 98 is cut, so that the waste material can be separated from the cardboard 98 more smoothly and the cutting smoothness can be improved.

[0072] Specifically, in this embodiment, the grooving blade 11 includes two blades 81 spaced apart along the thickness direction of the blade body 1 and a second recessed groove 82 located between the two blades 81. When the grooving blade 11 acts downward on the cardboard 98, the waste material is cut off by the blades 81 on both sides of the front and rear sides, forming a strip groove. The second recessed groove 82 not only reduces the weight, but also provides space for the cut waste material when the cardboard 98 is cut, so that the waste material can be separated from the cardboard 98 more smoothly, thereby improving the smoothness of cutting.

[0073] Example 2:

[0074] like Figures 7-8 As shown, a cardboard slotting knife has the same main structure as Embodiment 1, except that the positioning surfaces on the starting cutter head 2 and the ending cutter head 3 are both arc-shaped.

[0075] Therefore, because the shaping surface 41 is arc-shaped, it can be processed into... Figure 1 The sixth and seventh grooves 96 and 97 in the middle have a closed end that is arc-shaped. In this embodiment, the arc shape formed by the specific processing is a semi-circle.

[0076] In addition, each inclined cutting edge 42 and the corresponding arc-shaped shaping surface 41 are intersected by a second collinear segment 52, which is arc-shaped and extends upward and horizontally toward the grooving cutting edge 11 on both sides along the thickness direction of the tool body 1.

[0077] Therefore, without the need for the guide inclined surface 43 in Embodiment 1, the arc-shaped structure of the second collinear surface has the characteristic of downward constriction, so that the starting blade 21 can enter the blade groove 101 more smoothly downward.

[0078] In addition, multiple paper-cutting teeth 53 are provided on the second collinear segment 52 in this embodiment to make the initial blade 21 or the final blade 31 cut the cardboard 98 more smoothly.

[0079] In other embodiments, the paper-breaking teeth 53 may also be set on the first collinear segment 51 of the first embodiment.

[0080] Example 3:

[0081] A cardboard slotting knife, whose main structure is the same as that of Embodiment 1 or Embodiment 2, the difference being:

[0082] In one embodiment, the shaping surface 41 of the starting cutter head 2 adopts the planar setting as in Embodiment 1, while the shaping surface 41 of the ending cutter head 3 adopts the arc surface setting as in Embodiment 2. This allows for machining... Figure 1 The fourth groove in the middle is 94.

[0083] In another embodiment, the shaping surface 41 of the end cutter head 3 is set as a plane as in Embodiment 1, while the shaping surface 41 of the beginning cutter head 2 is set as an arc surface as in Embodiment 2. This allows for machining. Figure 1 The fifth groove in the middle is 95.

[0084] Example 4:

[0085] like Figure 13 As shown, a cardboard grooving knife has the same main structure as any one of the embodiments 1 to 3, except that: the main body of the knife 1 is provided with a splicing notch 12 at one end of the starting cutter head 2, and the splicing notch 12 is provided with a groove bottom 13 that is lower than the end cutter head 3.

[0086] Therefore, multiple cardboard slotting knives can be combined to form a continuous knife set that can cut longer strip slots.

[0087] Example 5:

[0088] like Figure 14As shown, a knife assembly includes at least two cardboard grooving knives as described in Embodiment 4, each cardboard grooving knife being arranged along the length of the knife body 1; the ends of two adjacent cardboard grooving knives facing each other are inserted into the splicing notch 12 using end blades 3. In this embodiment, two cardboard grooving knives are used, and each cardboard grooving knife is fixedly installed by means of a fixed mounting plate or similar method.

[0089] In other embodiments, a sliding frame can be configured, with the track direction of the sliding frame being the same as the length direction of the cutter body 1. Each of the cardboard slotting blades is slidably mounted on the sliding frame. At least one cutter body 1 slides to allow the end blade 3 to insert into the splicing notch 12 of an adjacent cutter body 1. Therefore, at least two cardboard slotting blades can slide and splice to form a combined structure according to actual needs, and slotting can be performed using the combined structure. Alternatively, the cardboard slotting blades can be slid apart to perform multiple slotting operations simultaneously, making the function more versatile.

[0090] Example 6:

[0091] like Figure 15 As shown, a knife set includes at least two cardboard grooving knives as described in Embodiment 1, with each cardboard grooving knife arranged along the length of the knife body 1; adjacent cardboard grooving knives are arranged abutting each other.

[0092] Therefore, multiple cardboard slotting knives can be combined to form a continuous knife set that can cut longer strip slots.

[0093] The cardboard slotting blades can be fixedly mounted on a common connecting plate to perform slotting in a fixed assembly. Alternatively, each cardboard slotting blade can be slidably installed and brought close together for combined slotting when needed, or they can be separated for individual slotting.

[0094] Example 7:

[0095] like Figures 9-12 As shown, a slotted assembly includes:

[0096] The cardboard slotting knife of any one of Embodiments 1 to 4, or the knife assembly of Embodiment 5 or 6;

[0097] The tool holder 10 is equipped with a vertical through-hole and horizontally extending tool groove 101.

[0098] Therefore, in Figure 10 In the indicated state, the grooving blade and the mating blade holder 10 are separated vertically, allowing the cardboard 98 to be grooved to be placed above the mating blade holder 10. Then, the grooving blade moves downwards, causing the initial blade edge 21 to... Figure 11 The state shown Figure 12The state shown prevents the grooving knife from colliding with the mating knife holder 10. Then, the starting cutter head 2, the grooving blade 11, and the ending cutter head 3 continue to enter the knife groove 101 in sequence to complete the grooving of the cardboard 98.

[0099] Example 8:

[0100] A carton forming device includes the slotting assembly described in Embodiment Six.

[0101] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A cardboard grooving knife, characterized in that, include: The tool body (1) has a slotted blade (11) arranged at an inclination on its lower side; The starting cutter head (2) is disposed on the tool body (1) and located at the inclined lower end of the grooving edge (11). The starting cutter head (2) extends downward and forms a starting cutting edge (21) at the bottom of the starting cutter head (2) that is downward and narrows along the thickness direction of the tool body (1). The end cutter head (3) is disposed on the cutter body (1) and located at the inclined upper end of the grooving blade (11).

2. The cardboard slotting knife according to claim 1, characterized in that: The starting cutter head (2) and / or the ending cutter head (3) are provided with a shaping surface (41) on the side away from the grooving blade (11), at least one of the shaping surfaces (41) is planar, and / or at least one of the positioning surfaces is arc-shaped.

3. The cardboard grooving knife according to claim 2, characterized in that: The shaping surface (41) on the starting cutter head (2) and the shaping surface (41) on the ending cutter head (3) are both planar; or, The shaping surface (41) on the starting cutter head (2) and the shaping surface (41) on the ending cutter head (3) are both arc-shaped; or, The shaping surface (41) on the starting cutter head (2) is planar, and the shaping surface (41) on the ending cutter head (3) is arc-shaped; or, The shaping surface (41) on the starting cutter head (2) is arc-shaped, and the shaping surface (41) on the ending cutter head (3) is planar.

4. The cardboard slotting knife according to claim 2, characterized in that: The bottom of the starting cutter head (2) and / or the ending cutter head (3) facing the grooving blade (11) is provided with an inclined cutting surface (42), and the inclined cutting surface (42) is inclined upward and horizontally close to the grooving blade (11).

5. The cardboard grooving knife according to claim 4, characterized in that: The bottom of at least one of the inclined cutting surfaces (42) and the bottom of one of the planar shaping surfaces (41) are collinear to form a first collinear segment (51); and / or, At least one of the inclined cutting surfaces (42) and one of the shaped surfaces (41) which are arranged in an arc shape are intersected by a second collinear segment (52).

6. The cardboard grooving knife according to claim 5, characterized in that: The first collinear segment (51) is a straight segment extending along the thickness direction of the tool body (1); and / or, The initial cutting edge (21) is provided with guide inclined surfaces (43) on both sides of the thickness direction of the tool body (1). The two guide inclined surfaces (43) are inclined upward and away from each other along the thickness direction of the tool body (1). Each guide inclined surface (43) intersects with the inclined cutting edge (42) of the initial cutting head (2) and the shaping surface (41) of the initial cutting head (2).

7. The cardboard grooving knife according to claim 5, characterized in that: The second collinear segment (52) is arranged in an arc shape extending upward and horizontally toward the grooving edge (11) on both sides along the thickness direction of the tool body (1).

8. The cardboard slotting knife according to claim 5, characterized in that: Multiple paper-breaking teeth (53) are provided on the first collinear segment (51) and / or the second collinear segment (52).

9. The cardboard slotting knife according to claim 1, characterized in that: The tool body (1) has a first plane (61) on both sides of its thickness, and the starting end tool head (2) has a second plane (62) on both sides of its thickness. Each second plane (62) and the corresponding first plane (61) are coplanar.

10. The cardboard slotting knife according to claim 1, characterized in that: The starting cutter (2) and / or the ending cutter (3) are provided with a first recessed notch (7) on the side facing the grooving blade (11).

11. The cardboard slotting knife according to claim 1, characterized in that: The grooving blade (11) includes two blade portions (81) spaced apart along the thickness direction of the tool body (1) and a second recessed groove (82) located between the two blade portions (81).

12. The cardboard slotting knife according to any one of claims 1-11, characterized in that: The cutter body (1) has a splicing notch (12) at one end of the starting cutter head (2), and the splicing notch (12) has a groove bottom (13) lower than the ending cutter head (3).

13. A set of blades, characterized in that: It includes at least two cardboard grooving knives as described in claim 12, each of the cardboard grooving knives being fixedly arranged and arranged along the length direction of the knife body (1); The end of the two adjacent cardboard slotting knives facing each other is inserted into the splicing notch (12) with the end knife head (3).

14. A set of blades, characterized in that: It includes a sliding frame and at least two cardboard slotting knives as described in claim 12, wherein the track direction of the sliding frame is the same as the length direction of the knife body (1), and each of the cardboard slotting knives is slidably disposed on the sliding frame; at least one knife body (1) slides so that the end blade (3) is inserted into the splicing notch (12) of the adjacent knife body (1).

15. A set of blades, characterized in that, It includes at least two cardboard grooving knives as described in claims 1-11, each of the cardboard grooving knives being arranged along the length direction of the knife body (1); Two adjacent cardboard slotting knives can be set against each other so that the combined cardboard slotting knives can be used to punch and cut continuous slots into the cardboard (98).

16. A slotted assembly, characterized in that, include: The cardboard slotting knife according to any one of claims 1-12, or the knife assembly according to any one of claims 13-15; The tool holder (10) is equipped with a tool groove (101); The grooving cutter moves downwards, causing the starting cutter head (2), the grooving blade (11), and the ending cutter head (3) to sequentially enter the cutter groove (101).

17. A cardboard box forming device, characterized in that: Includes the cardboard slotting knife according to any one of claims 1-12, or the knife assembly according to any one of claims 13-15, or the slotting assembly according to claim 16.

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