A die-cut splicing apparatus and a die-cut splicing process thereof

Abstract

The application discloses a die-cutting splicing device and a die-cutting splicing process thereof, relates to the technical field of a splicing device of a die-cuting device, and solves the problem of inaccurate lap joint distance measurement, comprising a sleeve with an inductor inside and a rotating cylinder; further comprising a movable assembly, the movable assembly being used for driving the sleeve to move downwards when the sleeve moves to the end of the material, so as to detect the lap joint length of the material; a rotating assembly, the rotating assembly being used for ensuring that the rotating cylinder does not move when the sleeve moves downwards; an alignment assembly, the alignment assembly being used for aligning the edges of two batches of materials in cooperation with the movable assembly, the sliding plate moves, the sleeve moves to the end of the material, moves downwards under the action of the first compression spring, and drives the abutting plate to move, so that the position of the sliding plate is fixed, when the two sleeves abut against the end of the material, the measurement of the lap joint distance is completed, and the measurement is accurate.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of splicing devices of die-cutting equipment, in particular to a die-cutting splicing device and a die-cutting splicing process thereof. BACKGROUND

[0002] Material splicing is one of the basic processes of die-cutting. Whenever a batch of material is used up, the first section of the next batch of material needs to be spliced with the end of the current material. Although it seems simple, the efficiency will decrease rapidly if not operated properly. The cutting process is stopped, the material to be used up is overlapped with the new material, the top and bottom edges are aligned, then the material is trimmed (for easy splicing), the trimmed material is overlapped, the material is glued together with mela glue, the overlapping length is determined according to the material performance, and after the mela glue is attached, the excess mela glue on both sides is trimmed with scissors.

[0003] In the existing die-cutting equipment, when the end of the previous batch of material is overlapped with the front end of the next batch of material, only two mechanical hands are used to pull the two batches of materials for overlapping processing. The position clamped by the mechanical hand is not located at the end of the material, and the distance between the clamped position and the end of the material is not fixed, so the overlapping length cannot be accurately measured. The existing device does not accurately measure the distance between the ends of the two batches of materials (i.e., the overlapping distance), which is not convenient for the subsequent mechanical hand to adjust the overlapping length.

[0004] Therefore, we propose a die-cutting splicing device and a die-cutting splicing process thereof. SUMMARY

[0005] The present application aims to provide a die-cutting splicing device and a die-cutting splicing process thereof that can conveniently measure the overlapping distance to solve the problems mentioned in the background.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical solution: a die-cutting splicing device, characterized by comprising a sleeve with an inductor inside and a rotating cylinder; further comprising a movable assembly for moving the sleeve down when the sleeve moves to the end of the material to detect the overlapping length of the material; a rotating assembly for ensuring that the rotating cylinder does not move when the sleeve moves down; an alignment assembly for aligning the edges of the two batches of materials in cooperation with the movable assembly.

[0007] Preferably, the active assembly comprises two fixed plates symmetrically distributed, the fixed plates are provided with first sliding grooves, sliding plates are slidingly fitted in the first sliding grooves, sleeve rods are fixedly connected to the bottom of the sliding plates and sleeved with the sleeve pipes, first compression springs are hung and fitted between the sleeve rods and the sleeve pipes, U-shaped plates are fixedly connected to the bottom end of the sliding plates, first rotating shafts are rotatably connected to the end of the U-shaped plates and fixedly connected with the rotating cylinders, the sleeve pipes and the rotating cylinders are abuttingly fitted with the outer surface of the materials, the first rotating shafts are provided with power assemblies for driving the rotating cylinders to roll along the outer surface of the materials, the fixed plates are provided with abutting assemblies for abuttingly fixing the materials, and the sleeve pipes are provided with fixing assemblies matched with the rotating assemblies.

[0008] Preferably, the power assembly comprises a motor fixedly connected with the body of the die-cutting machine, the output shaft of the motor is fixedly connected with a rotating plate, two second rotating shafts are rotatably connected to the rotating plate in a symmetrical distribution, and the second rotating shafts make the rotating cylinders roll through the rotating assembly.

[0009] Preferably, the fixing assembly comprises a movable plate penetrating into the sliding plate, one end of the movable plate is fixedly connected with the sleeve pipe, the other end of the movable plate is rotatably connected with two rotating rods in an inclined distribution, the end of the rotating rod is rotatably connected with an abutting plate penetrating out of the sliding plate, the abutting plate horizontally slides in the sliding plate, and the abutting plate is abuttingly fixed with the inner wall of the first sliding groove.

[0010] Preferably, the abutting assembly comprises two air cylinders fixedly connected with the body of the die-cutting machine, the air rods of the air cylinders are fixedly connected with the fixed plates, the side surfaces of the fixed plates are fixedly connected with connecting plates, and an abutting cylinder abuttingly fitted with the materials is rotatably connected between the two connecting plates.

[0011] Preferably, the rotating assembly comprises a first rotating plate rotatably connected with the first rotating shaft through a sleeve ring, a second rotating plate fixedly connected with the second rotating shaft is rotatably connected to the end of the first rotating plate, a baffle abuttingly fitted with the first rotating plate is fixedly connected to the second rotating plate, and a second compression spring is hung and fitted between the first rotating plate and the second rotating plate.

[0012] Preferably, the alignment assembly comprises a first incomplete gear fixedly connected with the first rotating shaft, a second incomplete gear rotatably connected with the U-shaped plate is engaged with the first incomplete gear, a toothed plate is engaged with the first incomplete gear and the second incomplete gear, an adjusting plate fitted with the side of the material is fixedly connected to the end of the toothed plate, the end of the adjusting plate is in an arc structure, and a limiting assembly is arranged on the toothed plate.

[0013] Preferably, the limiting component comprises a limiting plate, the second sliding groove is formed in the limiting plate and slidably connected with the limiting plate, and the limiting rod is fixedly connected with the U-shaped plate and penetrates through the second sliding groove.

[0014] Preferably, the limiting rod is fixedly connected with the smooth plate which is slidably connected with the toothed plate, so as to ensure smooth sliding of the toothed plate.

[0015] Preferably, the first sliding groove and the sliding plate are in T-shaped structure, the end of the pressing plate has elastic performance, and the end face of the pressing plate is an anti-skid surface, so as to ensure that the pressing plate is fixedly pressed with the first sliding groove.

[0016] A die cutting and splicing process of a die cutting and splicing device, comprising the following steps:

[0017] S1. Positioning, two materials are overlapped by a mechanical hand, and then the two fixing plates are moved relative to each other by the air cylinder, so that the pressing cylinder and the rotating cylinder simultaneously press the outer surface of the materials;

[0018] S2. Measurement, the sliding plate is moved along the fixing plate by starting the motor, the rotating cylinder is extruded and rolled along the outer surface of the materials, when the sleeve moving with the rotating cylinder moves to the end of the materials, the sleeve is moved under the action of the first compression spring, so as to drive the pressing plate to fixedly press the first sliding groove, so as to ensure that the position of the sliding plate and the rotating cylinder is fixedly unchanged, and the first rotating plate and the second rotating plate are rotated to adaptively adjust, when the two sleeves stop at the end of the materials, the measurement of the overlapping distance is completed;

[0019] S3. The two fixing plates are moved away from each other by starting the air cylinder, so as to facilitate the movement of the materials by the mechanical hand, adjust the overlapping distance, and facilitate subsequent adhesion.

[0020] Compared with the prior art, the present application has the following advantages:

[0021] 1. The sliding plate is moved, the sleeve moves to the end of the materials, and is moved downward under the action of the first compression spring, and drives the pressing plate to move, so that the position of the sliding plate is fixed, and when the two sleeves are pressed at the end of the materials, the measurement of the overlapping distance is completed, and the measurement is accurate.

[0022] 2. When one of the sleeves does not press the end of the materials, the other sleeve presses the end of the materials, when one of the sleeves continuously moves, the rotating plate continuously rotates, and the first rotating plate and the second rotating plate on the other sleeve are angularly rotated, so as to ensure that the position of the other sleeve is unchanged, and ensure that the detected distance is always the distance between the two material ends.

[0023] 3. The sliding plate moves while driving the adjusting plate to move back and forth, so that the adjusting plate presses the edges of the two materials, thereby ensuring the alignment of the two materials and the lap joint quality. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0025] Figure 2 It is a schematic diagram of the overall structure of the present application;

[0026] Figure 3 It is a schematic diagram of the overall structure of the present application; Figure 1 It is a schematic diagram of the overall structure of the present application;

[0027] Figure 4 It is a schematic diagram of the overall structure of the present application; Figure 2 It is a schematic diagram of the overall structure of the present application;

[0028] Figure 5 It is a schematic diagram of the overall structure of the present application; Figure 4 It is a schematic diagram of the overall structure of the present application;

[0029] Figure 6 It is a schematic diagram of the overall structure of the present application; Figure 5 It is a schematic diagram of the overall structure of the present application;

[0030] Figure 7 It is a schematic diagram of the overall structure of the present application; Figure 6 It is a schematic diagram of the overall structure of the present application;

[0031] Figure 8 It is a schematic diagram of the overall structure of the present application; Figure 7 It is a schematic diagram of the overall structure of the present application;

[0032] Figure 9 It is a schematic diagram of the overall structure of the present application; Figure 8 It is a schematic diagram of the overall structure of the present application;

[0033] Figure 10 It is a schematic diagram of the overall structure of the present application; Figure 9 It is a schematic diagram of the overall structure of the present application;

[0034] Figure 11 It is a schematic diagram of the overall structure of the present application; Figure 10 It is a schematic diagram of the overall structure of the present application;

[0035] Figure 12 It is a schematic diagram of the overall structure of the present application; Figure 11 It is a schematic diagram of the overall structure of the present application;

[0036] Figure 13 It is a schematic diagram of the overall structure of the present application; Figure 10 It is a schematic diagram of the overall structure of the present application;

[0037] Figure 14 It is a schematic diagram of the overall structure of the present application; Figure 13 It is a schematic diagram of the overall structure of the present application;

[0038] Figure 15 It is a schematic diagram of the overall structure of the present application;Figure 14 The middle structure splitting schematic diagram.

[0039] In the figure: 1-sleeve; 2-rotating cylinder; 3-moving assembly; 4-fixed plate; 5-first sliding groove; 6-sliding plate; 7-sleeve rod; 8-first compression spring; 9-U-shaped plate; 10-first rotating shaft; 11-power assembly; 12-motor; 13-rotating plate; 14-second rotating shaft; 15-fixed assembly; 16-moving plate; 17-rotating rod; 18-pressing plate; 19-pressing assembly; 20-air cylinder; 21-connecting plate; 22-pressing cylinder; 23-rotating assembly; 24-first rotating plate; 25-second rotating plate; 26-stop plate; 27-second compression spring; 28-aligning assembly; 29-first incomplete gear; 30-second incomplete gear; 31-toothed plate; 32-adjusting plate; 33-limiting assembly; 34-limiting plate; 35-second sliding groove; 36-limiting rod; 37-stabilizing plate. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0041] Embodiment one

[0042] Please refer to Figures 1-4 , a die cutting and splicing device shown in the figure, which comprises a sleeve 1 with an inductor inside and a rotating cylinder 2; further comprising 2 moving assemblies 3, the moving assemblies 3 are used to move the sleeve 1 down when moving to the end of the material, so as to detect the overlap length of the material; rotating assembly 23, the rotating assembly 23 is used to ensure that the rotating cylinder 2 does not move when the sleeve 1 moves down; aligning assembly 28, the aligning assembly 28 is used to cooperate with the moving assembly 3 to arrange and align the edges of the two batches of materials.

[0043] Please refer to Figures 5-7 and Figures 13-15The movable assembly 3 in the drawing includes two fixed plates 4 symmetrically distributed, the first sliding groove 5 is opened on the fixed plate 4, the sliding plate 6 is slidingly matched in the first sliding groove 5, the sleeve rod 7 is fixedly connected with the sleeve 1, the first compression spring 8 is hung and matched between the sleeve rod 7 and the sleeve 1, the U-shaped plate 9 is fixedly connected at the bottom end of the sliding plate 6, the first rotating shaft 10 is rotatably connected at the end of the U-shaped plate 9 and is fixedly connected with the rotating cylinder 2, the sleeve 1 and the rotating cylinder 2 are abuttingly matched with the outer surface of the material, the power assembly 11 for driving the rotating cylinder 2 to roll along the outer surface of the material is arranged on the first rotating shaft 10, the abutting assembly 19 for abuttingly fixing the material is arranged on the fixed plate 4, and the fixing assembly 15 matched with the rotating assembly 23 is arranged on the sleeve 1.

[0044] Please refer to Figures 5-8 The power assembly 11 in the drawing includes the motor 12 fixedly connected with the die-cutting machine body, the output shaft of the motor 12 is fixedly connected with the rotating plate 13, the two second rotating shafts 14 are rotatably connected on the rotating plate 13 and symmetrically distributed, and the rotating cylinder 2 is rolled through the rotating assembly 23.

[0045] Please refer to Figures 14-15 The fixing assembly 15 in the drawing includes the movable plate 16 penetrating into the sliding plate 6, one end of the movable plate 16 is fixedly connected with the sleeve 1, the other end of the movable plate 16 is rotatably connected with the two rotating rods 17 which are obliquely distributed, the abutting plate 18 is rotatably connected at the end of the rotating rod 17 and penetrates out of the sliding plate 6, the abutting plate 18 horizontally slides in the sliding plate 6, and the abutting plate 18 is abuttingly fixed with the inner wall of the first sliding groove 5. Figures 3-6 The abutting assembly 19 in the drawing includes the two air cylinders 20 fixedly connected with the die-cutting machine body, the air rods of the air cylinders 20 are fixedly connected with the fixed plate 4, the connecting plates 21 are fixedly connected on the side surface of the fixed plate 4, and the abutting cylinder 22 abuttingly matched with the material is rotatably connected between the two connecting plates 21.

[0046] Please refer to Figures 8-10 The rotating assembly 23 in the drawing includes the first rotating plate 24 rotatably connected with the first rotating shaft 10 through the sleeve ring, the second rotating plate 25 is fixedly connected with the second rotating shaft 14 and rotatably connected at the end of the first rotating plate 24, the baffle 26 is fixedly connected with the first rotating plate 24 and abuttingly matched with the second rotating plate 25, and the second compression spring 27 is hung and matched between the first rotating plate 24 and the second rotating plate 25.

[0047] The cross section of the first sliding groove 5 and the sliding plate 6 is in T-shaped structure, the end of the abutting plate 18 has elastic performance, and the end surface of the abutting plate 18 is a non-slip surface.

[0048] A die cutting splicing process of a die cutting splicing device, comprising the following steps; S1. In position, two materials are overlapped by a mechanical hand, then two fixed plates 4 are moved relative to each other by a pneumatic cylinder 20, so that the pressing cylinder 22 and the rotating cylinder 2 press the outer surface of the material at the same time; S2. Measurement, by starting the motor 12, the sliding plate 6 moves along the fixed plate 4, the rotating cylinder 2 extrudes and rolls along the outer surface of the material, when the sleeve 1 moving with the rotating cylinder 2 moves to the end of the material, the sleeve 1 moves under the action of the first compression spring 8, so that the pressing plate 18 presses the fixed first sliding groove 5, so that the position of the sliding plate 6 and the rotating cylinder 2 is fixed, and the first rotating plate 24 and the second rotating plate 25 rotate to adaptively adjust, when the two sleeves 1 stop at the end of the material, the measurement of the overlap distance is completed; S3. By starting the pneumatic cylinder 20, the two fixed plates 4 are moved away from each other, so that the mechanical hand drives the material to move, adjusts the overlap distance, and facilitates subsequent adhesion.

[0049] In this embodiment, the two fixed plates 4 are moved close to each other by the pneumatic cylinder 20, the rotating plate 13 rotates adaptively, the first rotating plate 24 and the second rotating plate 25 rotate adaptively, when the pressing cylinder 22 and the rotating cylinder 2 and the sleeve 1 press the outer surface of the material, then start the motor 12, the motor 12 drives the rotating plate 13 to rotate, the second rotating shaft 14 rotates in a circle, the first rotating plate 24 and the second rotating plate 25 rotate adaptively (the first rotating plate 24 and the second rotating plate 25 remain aligned), the fixed plate 4 remains stationary, the sliding plate 6 moves along the first sliding groove 5, the first rotating plate 24 and the second rotating plate 25 make the rotating cylinder 2 move along the first sliding groove 5 and the outer surface of the material, the sleeve 1 moves with the sliding plate 6, when the sleeve 1 moves to the end of the material, under the action of the first compression spring 8, the sleeve 1 moves along the sleeve rod 7, the outer surface of the sleeve 1 presses against the end of the material;

[0050] The sleeve 1 moving along the sleeve rod 7 drives the movable plate 16 to move, so that the rotating rod 17 rotates, drives the pressing plate 18 to move, and the pressing plate 18 presses against the first sliding groove 5, under the action of friction, the pressing plate 18 is pressed and fixed with the inner wall of the first sliding groove 5, so that the position of the sleeve 1 and the rotating cylinder 2 remains unchanged, and the sleeve 1 always presses against the end of the material;

[0051] When one sleeve 1 presses against the end of the material, and the other sleeve 1 has not moved to the end of the material, continue to rotate the rotating plate 13, the other sleeve 1 continues to move, and the first rotating plate 24 and the second rotating plate 25 on the stationary sleeve 1 rotate adaptively under the action of the rotating plate 13, the second compression spring 27 is compressed, until the other sleeve 1 moves to the end of the material, when both sleeves 1 are fixed at the end of the material, the measurement of the overlap distance is completed by the sensor, and when the measurement is completed, the two fixed plates 4 are moved away from each other by the pneumatic cylinder 20.

[0052] Embodiment Two

[0053] Embodiment Two is a further supplement and illustration of Embodiment One, please refer to Figures 10-11 The alignment assembly 28 in the diagram comprises a first incomplete gear 29 fixedly connected with the first rotating shaft 10, the first incomplete gear 29 is engaged with a second incomplete gear 30 rotationally connected with the U-shaped plate 9, the first incomplete gear 29 and the second incomplete gear 30 are engaged with a toothed plate 31, the toothed plate 31 is fixedly connected at the end with an adjusting plate 32 matched with the material side, the end of the adjusting plate 32 is arc-shaped structure, and the toothed plate 31 is provided with a limiting assembly 33.

[0054] In this embodiment, the rotating cylinder 2 rolls at the same time, driving the first rotating shaft 10 to rotate, so that the first incomplete gear 29 rotates relative to the sliding plate 6, the first incomplete gear 29 drives the toothed plate 31 to move a certain distance, the second incomplete gear 30 rotates with the toothed plate 31, when a part of the teeth of the first incomplete gear 29 disengages from the toothed plate 31, another part of the teeth of the first incomplete gear 29 engages with the second incomplete gear 30, so that the toothed plate 31 moves in a direction, and the other part of the teeth disengages from the second incomplete gear 30 and re-engages with the toothed plate 31, so as to reciprocate, so as to make the toothed plate 31 reciprocate, and the adjusting plate 32 reciprocate, so as to arrange the sides of the two materials and align the sides of the two materials.

[0055] Embodiment Three

[0056] Embodiment Three is a further supplement and illustration of Embodiment Two, please refer to Figures 11-12 The limiting assembly 33 in the diagram comprises a limiting plate 34, the toothed plate 31 is provided with a second sliding groove 35 slidably matched with the limiting plate 34, the limiting plate 34 is fixedly connected with a limiting rod 36 penetrating out of the second sliding groove 35 and fixedly connected with the U-shaped plate 9, and the limiting rod 36 is fixedly connected with a stabilizing plate 37 slidably matched with the toothed plate 31. In this embodiment, under the action of the limiting rod 36 and the limiting plate 34, the toothed plate 31 is stably reciprocated by matching with the second sliding groove 35.

[0057] It should be noted that, in this document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0058] While embodiments of the application have been shown and described, it is to be understood that the embodiments described are merely exemplary of the principles and application of the present application. Numerous modifications and adaptions can be effected without departing from the spirit and scope of the present application, which is not limited to the exact construction and arrangement described. It is intended, therefore, to cover all modifications and adaptions that fall within the scope of the claims and their equivalents.

Claims

1. A die-cutting splicing apparatus, characterized by, The utility model relates to a material end lap length detection device of die cutting machine, including: The sleeve (1) with the inductor in the inside and the rotating cylinder (2); Further including: The movable assembly (3) is used to drive the sleeve (1) to move down when moving to the material end, so that the overlap length of material is detected; The rotating assembly (23) is used to ensure that the rotating cylinder (2) does not move when the sleeve (1) moves down; The alignment assembly (28) is used to cooperate with the movable assembly (3) and arrange the side of two batches of materials.

2. A die assembly according to claim 1, wherein: The movable assembly (3) includes two fixed plates (4) that are symmetrically distributed, the fixed plate (4) is provided with a first sliding groove (5), the first sliding groove (5) is slidably connected with a sliding plate (6), the sliding plate (6) bottom is fixedly connected with the sleeve rod (7) of the sleeve (1), the sleeve rod (7) and the sleeve (1) are hingedly connected with the first compression spring (8), the sliding plate (6) bottom is fixedly connected with the U-shaped plate (9), the U-shaped plate (9) end is rotatably connected with the first rotating shaft (10) that is connected with the rotating cylinder (2), the sleeve (1) and the rotating cylinder (2) are all pressed with the outer surface of material, the first rotating shaft (10) is provided with the power assembly (11) that drives the rotating cylinder (2) to roll along the outer surface of material, the fixed plate (4) is provided with the abutting component (19) that abuts and fixes the material, the sleeve (1) is provided with the fixed component (15) that cooperates with the rotating assembly (23).

3. A die assembly according to claim 2, wherein: The power assembly (11) includes a motor (12) connected with the die cutting machine body, the output shaft of the motor (12) is fixedly connected with a rotating plate (13), the rotating plate (13) is rotatably connected with two second rotating shafts (14) that are symmetrically distributed, the second rotating shaft (14) makes the rotating cylinder (2) roll through the rotating assembly (23).

4. A die assembly according to claim 3, wherein: The fixed component (15) includes a movable plate (16) penetrating into the sliding plate (6), one end of the movable plate (16) is connected with the sleeve (1), the other end of the movable plate (16) is rotatably connected with two inclined rotating rods (17), the rotating rod (17) end is rotatably connected with the abutting plate (18) penetrating out of the sliding plate (6), the abutting plate (18) slides horizontally in the sliding plate (6), and the abutting plate (18) is abutted and fixed with the inner wall of the first sliding groove (5).

5. A die assembly according to claim 4, wherein: The abutting component (19) includes two air cylinders (20) connected with the die cutting machine body, the air cylinder (20) air rod end is connected with the fixed plate (4), the fixed plate (4) side is fixedly connected with a connecting plate (21), and the connecting plate (21) is rotatably connected with the abutting cylinder (22) that abuts and cooperates with the material between two connecting plates (21).

6. A die assembly according to claim 5, wherein: The rotating assembly (23) comprises a first rotating plate (24) rotatably connected to the first rotating shaft (10) through a collar, an end of the first rotating plate (24) is rotatably connected to a second rotating plate (25) fixedly connected with the second rotating shaft (14), the second rotating plate (25) is fixedly connected with a baffle (26) abutting against the first rotating plate (24), and the first rotating plate (24) and the second rotating plate (25) are hingedly connected with a second compression spring (27).

7. A die assembly according to claim 6, wherein: The alignment assembly (28) comprises a first incomplete gear (29) fixedly connected with the first rotating shaft (10), the first incomplete gear (29) is engaged with a second incomplete gear (30) rotatably connected with the U-shaped plate (9), the first incomplete gear (29) and the second incomplete gear (30) are engaged with a toothed plate (31), the toothed plate (31) is fixedly connected with an adjusting plate (32) at one end, the adjusting plate (32) is arc-shaped at the other end, and the toothed plate (31) is provided with a limiting assembly (33).

8. A die assembly according to claim 7, wherein: The limiting assembly (33) comprises a limiting plate (34), the toothed plate (31) is provided with a second sliding groove (35) slidably connected with the limiting plate (34), and the limiting plate (34) is fixedly connected with a limiting rod (36) penetrating out of the second sliding groove (35) and fixedly connected with the U-shaped plate (9).

9. A die assembly according to claim 8, wherein: The limiting rod (36) is fixedly connected with a stable plate (37) slidably connected with the toothed plate (31).

10. The die assembly of claim 6 wherein: The first sliding groove (5) and the sliding plate (6) are T-shaped in cross section, the abutting plate (18) is elastically at one end, and the abutting plate (18) is provided with an anti-skid surface at the other end.

11. A die-cut splicing process of a die-cut splicing apparatus according to claim 10, wherein, The method comprises the following steps: S1. Positioning, two materials are overlapped by a mechanical hand, then the two fixed plates (4) are moved relative to each other by the pneumatic cylinder (20), so that the abutting cylinder (22) and the rotating cylinder (2) abut against the outer surface of the materials at the same time; S2. Measuring, the sliding plate (6) is moved along the fixed plate (4) by starting the motor (12), the rotating cylinder (2) is pressed and rolled along the outer surface of the materials, when the sleeve (1) moving with the rotating cylinder (2) moves to the end of the materials, the sleeve (1) is moved under the action of the first compression spring (8), so as to drive the abutting plate (18) to abut against the first sliding groove (5) and fix the position of the sliding plate (6) and the rotating cylinder (2), and the first rotating plate (24) and the second rotating plate (25) are rotated to adaptively adjust, and when the two sleeves (1) stop at the end of the materials, the overlapping distance is measured; S3. The two fixed plates (4) are moved away from each other by starting the pneumatic cylinder (20), so as to facilitate the movement of the materials by the mechanical hand, adjust the overlapping distance, and facilitate subsequent adhesion.

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