Waste removal mechanism of a die cutter

Abstract

The application discloses a first tooth opening device of a waste removing die cutting and hot stamping machine, which has a machine body, two parallel transmission closed chains and a tooth row assembly provided on the machine body, and two ends of the tooth row assembly are equidistantly installed on the two chains; the tooth row assembly comprises a rotating shaft, and a swing arm is installed on the rotating shaft; the machine body is characterized in that a first tooth opening device is installed above the machine body, the two tooth opening devices comprise an upper pull rod and a lower pull rod, the upper and lower pull rods are simultaneously hinged on a clutch swing arm, and the clutch swing arm is movably arranged. The structure of the application can remove the finished product after the stamping of the processed piece is completed, the finished product falls on a paper collecting plate, the waste edge continues to be conveyed, and the waste edge is removed by the first swing arm, so that the application has the characteristics of simple structure and convenient waste removal.

Description

Technical Field

[0001] This invention relates to a die-cutting and hot stamping machine, specifically to a waste removal mechanism for a die-cutting machine. Background Technology

[0002] Die-cutting and hot stamping machines are used for die-cutting, creasing, and hot stamping. They are post-printing equipment mainly used for non-metallic materials, self-adhesive labels, EVA, double-sided tape, etc. After the printing is completed, waste removal is required, and a waste removal mechanism is also needed. Currently, the so-called waste removal mechanism removes the waste part of the printed product, and the remaining usable part is then transported to the receiving section for collection by the paper gripper bar. For example, the authorization announcement number CN208614959U, entitled "A Fully Automatic Waste Removal Die-cutting Machine," discloses the following: A fully automatic waste removal die-cutting machine, comprising a die-cutting machine housing, characterized in that: a feeder is provided at one end of the die-cutting machine housing; a human-machine interactive display is provided on the upper side of the feeder; a conveying section is provided on one side of the feeder; a die-cutting section is provided on one side of the conveying section; physical buttons are provided on the outer surface of the die-cutting section; a waste removal section is provided on one side of the die-cutting section; a receiving section is provided on one side of the waste removal section; a platform is provided on the outer side of the die-cutting machine housing; a guardrail is fixedly connected to the upper side of the platform; the waste removal section includes an upper drive frame, a waste removal blade, a protective sleeve, a waste discharge port, a lower waste removal frame, and a waste collection basket. The die-cutting machine consists of a telescopic rod and a conveyor plate. An upper waste removal frame is located below the upper drive rod, and the upper drive frame and the upper waste removal frame are fixedly connected by a connecting plate. A waste removal knife is fixedly connected to the lower side of the upper waste removal frame. A conveyor plate is located directly below the upper waste removal frame, and a lower waste removal frame is located below the conveyor plate. A telescopic rod is fixedly connected to the upper surface of the lower waste removal frame, and both ends of the telescopic rod are fixedly connected to the conveyor plate and the lower waste removal frame respectively by screws. A waste discharge port is opened on one side of the conveyor plate, and a protective sleeve is provided on one side of the waste discharge port. The upper and lower sides of the protective sleeve are fixedly connected to the conveyor plate and the lower waste removal frame respectively by screws. A waste collection basket is located below the lower waste removal frame, and the waste collection basket is slidably connected to the die-cutting machine housing through a sliding groove. This fully automatic waste removal die-cutting machine removes the waste portion of the printed product through the waste removal section, leaving the good product, which is then sent to the receiving section for collection. The waste removal mechanism described above is very complex. To simplify the structure, those skilled in the art can directly perform waste removal at the receiving section. This involves separating the good part of the printed product from the waste part in the waste removal section, allowing the good part to fall directly into the receiving section for collection. Adding a waste collection section at the rear of the machine would make the machine longer and require more space. For most sheet-fed die-cutting machines, waste removal actually refers to cutting off most of the sheet with a waste removal blade, while further processing the edge portion held by the grippers. Summary of the Invention

[0003] To address the shortcomings of existing technologies, the technical problem to be solved by this invention is to provide a waste removal mechanism for a die-cutting machine that occupies a small space.

[0004] Therefore, the present invention is implemented using the following technical solution: a waste removal mechanism for a die-cutting machine, comprising a machine body, on which two parallel transmission chains and a gripper assembly are provided. The two ends of the gripper assembly are equidistantly mounted on the two parallel transmission closed chains. The gripper assembly includes a rotating shaft and a gripper body. A swing arm is mounted on the rotating shaft. A first gripper piece is fixed on the gripper body, and a second gripper piece is fixed on the rotating shaft. The first and second grippers constitute a paper gripper. The invention is characterized by a first opening mechanism mounted above the machine body. The first tooth-opening device includes a first rotating shaft mounted above the machine body, a first swing arm corresponding to the swing arm on the first rotating shaft, a cam on the machine body, and a swing rod on one side of the cam. One end of the swing rod contacts the wheel surface of the cam, and the other end is hinged to a pull rod. A connecting arm is provided on the first rotating shaft, and an upper pull rod is hinged to the connecting arm. The upper pull rod and the pull rod are simultaneously hinged to a clutch swing arm. The clutch swing arm is movable to change the distance between the hinge point of the connecting arm and the hinge point of the swing rod.

[0005] The machine body is provided with a slide seat with a sliding groove, the clutch swing arm has a swing arm seat, the swing arm seat is placed in the sliding groove, and the swing arm seat is connected to the cylinder.

[0006] A conveyor belt is provided below the first rotating shaft, and one end of the conveyor belt passes through the wall panel of the machine body.

[0007] The tooth rack body is equipped with a spring, the middle part of the second tooth piece is fixed on the rotating shaft, and the tail end of the second tooth piece is pressed on the spring.

[0008] The tail end of the machine body is provided with a second tooth-opening device. The second tooth-opening device includes a second rotating shaft provided at the tail end of the machine body, a second swing arm provided on the second rotating shaft, and a collision block installed on the second swing arm.

[0009] The second tooth-opening device also includes a scraper plate seat on which a movable support plate is mounted.

[0010] The tray has a long groove, and a bolt passes through the long groove to connect to the scraper plate seat.

[0011] The cam has a camshaft, a scraper spindle is mounted below the camshaft, a scraper lever is fixed on the scraper spindle, a pressure plate or scraper blade is fixed on the scraper lever, a scraper arm is mounted on the scraper spindle, and a scraper cam is also mounted on the camshaft. The scraper arm contacts the wheel surface of the scraper cam.

[0012] The second rotating shaft is also provided with a second connecting arm, and a connecting rod is hinged to the second connecting arm. The swing rod also has a third end, and the other end of the connecting rod is hinged to the third end of the swing rod.

[0013] The machine body is equipped with a first scraper shaft, on which a scraper plate is mounted. The scraper plate is linked to the second swing arm or the first swing arm, and the scraper plate cooperates with the first rotating shaft.

[0014] This invention, through the use of a clutch swing arm to change the distance between the hinge points of the upper connecting rod and the connecting arm and the hinge points of the lower connecting rod and the swing arm, allows either the second swing arm or the first swing arm to operate effectively. This means that when the first tooth-opening device is working effectively, the second tooth-opening device is inactive, and vice versa. Therefore, for workpieces that do not require waste removal, the first tooth-opening device is activated directly, causing the paper gripper to open and the workpiece to fall directly to the receiving section. If waste removal is required, the second tooth-opening device is inactive, meaning the paper gripper is not opened. The waste removal section separates the finished product from the waste, allowing the finished product to fall to the receiving section, while the waste remains gripped by the paper gripper and continues to be conveyed. When the tooth-bar assembly reaches the top of the frame, the first tooth-opening device activates, the paper gripper opens, and the waste falls and is conveyed out via the conveyor belt. This significantly shortens the overall length of the equipment, reducing its footprint. Attached Figure Description

[0015] The present invention includes the following figures:

[0016] Figure 1 This is a structural diagram of the present invention;

[0017] Figure 2 This is a structural diagram of the present invention after the wall panels have been removed;

[0018] Figure 3 For the present invention Figure 2 Top view of the structure;

[0019] Figure 4 This is a structural diagram of the tooth rack assembly of the present invention;

[0020] Figure 5 This is a schematic diagram of the hinged structure of the clutch swing arm and the upper and lower connecting rods of the present invention;

[0021] Figure 6This is a structural diagram of the pendulum rod of the present invention;

[0022] Figure 7 This is a structural diagram of the second tooth-opening device of the present invention cooperating with the paper scraping spindle;

[0023] Figure 8 This is a structural diagram of the paper tray of the present invention mounted on the scraper tray seat;

[0024] Figure 9 This is a structural diagram of the doctor blade of the present invention, which is mounted on the doctor blade holder by bolts. Detailed Implementation

[0025] Referring to the attached drawings, the waste removal mechanism of this die-cutting machine has a body 1, on which two parallel transmission chains and a gripper assembly 2 are provided. The two ends of the gripper assembly 2 are equidistantly mounted on the two parallel transmission closed chains, allowing the gripper assembly to be circulated through the chains. These are all prior art. The gripper assembly 2 includes a rotating shaft 23 and a gripper body 21. A swing arm 24 is mounted on the rotating shaft 23. A first gripper 25 is fixed on the gripper body 21, and a second gripper 22 is fixed on the rotating shaft 23. The first and second grippers 22 constitute a paper gripper. After the swing arm 24 swings, it drives the rotating shaft 23 to rotate, causing the second gripper 22 to swing, thus opening or engaging with the first gripper 25 to achieve paper gripping and paper release. A first opening device is installed on the body 1. The first opening device includes a first opening device mounted on the top of the body 1. A rotating shaft 3 is provided, on which a first swing arm 31 corresponding to the swing arm 24 is provided. A cam 10 is provided on the machine body 1, and a swing rod 11 is provided on one side of the cam 10. One end 111 of the swing rod 11 contacts the wheel surface of the cam 10, and the other end 112 is hinged to a pull rod 9. A connecting arm 4 is provided on the first rotating shaft 3, and an upper pull rod 5 is hinged on the connecting arm 4. The upper pull rod 5 and the pull rod 9 are simultaneously hinged to a clutch swing arm 8. The rotation of the cam 10 causes the swing rod 11 to swing. Through the pull rod 9, the clutch swing arm 8, and the upper pull rod 5, the connecting arm 4 will swing, thereby causing the first rotating shaft 3 to rotate. The first swing arm 31 of the first rotating shaft swings, and cooperates with the swing arm 24 on the rotating shaft 23 to enable the paper gripper to open and close. The clutch swing arm 8 is movable to change the distance between the hinge point of the connecting arm 4 and the hinge point of the swing rod 11.

[0026] The clutch lever 8 is moved in the following way: a slide seat 7 with a sliding groove is provided on the body 1, the clutch lever 8 has a lever seat 81, the lever seat 81 is placed in the sliding groove, the lever seat 81 is connected to the cylinder 6, and after the cylinder 6 works, it can push and pull the lever seat 81 to realize the movement of the clutch lever 8.

[0027] A conveyor belt 15 is provided below the first rotating shaft 3. The conveyor belt 15 is circulated and driven, and one end of the conveyor belt 15 passes through the wall plate of the machine body 1. The waste material after being cut by the first cutting device falls onto the conveyor belt 15 and is conveyed out by the conveyor belt 15.

[0028] The tooth rack 21 is provided with a spring 26. The middle part of the second tooth plate 22 is fixed on the rotating shaft 23. The tail end of the second tooth plate 22 is pressed on the spring 26. Therefore, the second tooth plate 22 has elastic force, which provides a buffering force when it bites or opens with the first tooth plate 25.

[0029] In this embodiment, a second tooth-opening device is also provided at the tail end of the body 1. The second tooth-opening device includes a second rotating shaft 17 provided at the tail end of the body 1, a second swing arm 171 corresponding to the swing arm 24 on the second rotating shaft 17, and a stop block 172 installed on the second swing arm 171. After the second swing arm 171 swings, it swings with the stop block 172, so that the stop block 172 cooperates with the swing arm 24 to realize the tooth-opening action. The tooth-opening is that the second tooth plate 22 and the first tooth plate 25 realize the opening action.

[0030] Its second tooth-opening device also includes a scraper plate seat 176, which is connected to the second swing arm 171, and a movable support plate 173 is installed on the scraper plate seat 176.

[0031] The tray 173 has a long groove 174, and a bolt passes through the long groove 174 to connect with the scraper plate seat 176.

[0032] The cam 10 has a camshaft 103, and a scraper spindle 105 is installed below the camshaft 103. A scraper lever 106 is fixed on the scraper spindle 105, and a pressure plate 107 or a scraper blade 108 is fixed on the scraper lever 106. A scraper arm 102 is installed on the scraper spindle 105, and a scraper cam 101 is also installed on the camshaft 103. The scraper arm 102 contacts the wheel surface of the scraper cam 101.

[0033] A rocker arm 104 is also mounted on the camshaft 103. The rocker arm 104 is hinged to the scraper arm 106 and is used to position the scraper arm 104.

[0034] The second rotating shaft 17 is also provided with a second connecting arm 16, and a connecting rod 12 is hinged to the second connecting arm 16. The swing rod 11 also has a third end 113. The other end of the connecting rod 12 is hinged to the third end 113 of the swing rod 11. This structure simplifies the transmission structure of the equipment.

[0035] The machine body 1 is equipped with a first scraper shaft 19, and a scraper plate 14 is installed on the first scraper shaft 19. The scraper plate 14 is linked with the second swing arm 31 or the first swing arm 171, and the scraper plate 14 cooperates with the first rotating shaft 3. During the second opening, the scraper plate 14 can quickly separate the waste material from the paper gripper.

[0036] The working principle of this invention is described below:

[0037] In this invention, when the entire sheet of processed material is dropped for collection without waste removal at the receiving section, the pressure plate 107 is removed, and the scraper 108 is installed. The bolts are loosened, and the scraper seat 176 is moved backward to retract into the support plate 173. Simultaneously, the cylinder 6 operates, pulling the clutch lever 8 to the left side of the slide block 7. The clutch lever 8, along with the upper pull rod 5 and lower pull rod 9, swings, aligning them approximately in a straight line. When the cylinder 6 operates, the upper pull rod 5 swings, causing the connecting arm 4 to swing, rotating the first rotating shaft 3 by an angle. This maximizes the combined length of the upper pull rod 5 and lower pull rod 9. At this point, the cam 10 operates. When the second rotating shaft 17 and the first rotating shaft 3 are rotated by the pull rod and the connecting rod, the second swing arm 171 on the second rotating shaft 3, with the contact block 172, can cooperate with the swing arm 24 on the gripper assembly, so that the swing arm 24 swings and rotates the rotating shaft 24 back and forth, thereby realizing the opening and closing of the paper gripper. When the imprinted product is moved above the receiving section 13 by the gripper, the first opening device performs the opening action. At the same time, the scraper cam 101, which is installed on the same camshaft 103 as the cam 10, swings the scraper swing arm 106 through the scraper main shaft 105, thereby driving the scraper blade 108 to swing and scrape the imprinted product down onto the receiving section 13. After the first rotating shaft 3 rotates by an angle, the first swing arm 31 on the first rotating shaft 3 also rotates by an angle, moving further away from the swing arm 24. After the cam 10 rotates, when the connecting arm 4 swings through the pull rod 9, clutch swing arm 8 and pull rod 5, the first swing arm 31 on the first rotating shaft 3 cannot cooperate with the swing arm 24 on the rotating shaft 23, thus causing the secondary tooth opening action to be in a failed state.

[0038] When waste removal is required, the imprinted product is transferred to the receiving section 13. The finished product is cut off by the cooperation of the pressure plate 107 and the scraper plate seat 176, leaving the waste edge clamped by the paper gripper. Therefore, it is necessary to first remove the scraper plate 108 and replace it with the pressure plate 107. At the same time, loosen the bolts and move the scraper plate seat 176 to the left so that the scraper plate seat exposes the support plate 173 and can cooperate with the pressure plate 107. Also, remove the stop block 172 on the second swing arm 171 so that the second swing arm 171 is not enough to cooperate with the swing arm 24 after swinging. At the same time, the cylinder 6 actuates to push the clutch swing arm 8 to the right side of the slide 7, making the combined length of the upper pull rod 5 and the lower connecting rod 9 the shortest, so that the first swing arm 31 swings at an angle in the opposite direction, rotating the first rotating shaft 3, and so that the first swing arm 31 also rotates at an angle, so that it can cooperate with the swing arm 24. When the scraper cam 101 operates, the scraper arm 102 swings, causing the scraper spindle 105 to swing along the scraper lever 106. This causes the pressure plate 107 to swing and engage with the scraper plate holder 176, cutting off the finished product and dropping it into the receiving section 13. The waste edge left behind by the gripper is not engaged with the swing arm 24 on the rotating shaft 23 because the swing arm 171 cannot engage with the swing arm 24. Even though the second opening device is in a malfunctioning state, the gripper still holds the waste edge and continues to be conveyed under the transmission of the chain. When the waste edge is conveyed to the top of the die-cutting and hot stamping machine by the gripper assembly 2, the first opening device is activated. That is, the swing arm 31 engages with the swing arm 24 on the gripper assembly 2 that has been transmitted to this location, realizing the opening and closing action of the gripper. With the cooperation of the scraper plate 14, the waste edge is sent out onto the conveyor belt 15 below the first rotating shaft 3 of the scraper blade.

[0039] In the above embodiments, the description of directionality refers to the orientation according to the drawing.

Claims

1. A waste removal mechanism for a die-cutting machine, comprising a body (1), on which two parallel transmission chains and a gripper assembly (2) are provided, the two ends of the gripper assembly (2) being equidistantly mounted on the two parallel transmission closed chains, the gripper assembly (2) comprising a rotating shaft (23) and a gripper body (21), a swing arm (24) being mounted on the rotating shaft (23), a first gripper plate (25) being fixed on the gripper body (21), and a second gripper plate (22) being fixed on the rotating shaft (23), the first gripper plate (25) and the second gripper plate (22) constituting a paper gripper, characterized in that A first tooth-cutting device is installed on the upper part of the body (1). The first tooth-cutting device includes a first rotating shaft (3) installed on the upper part of the body (1). A first swing arm (31) corresponding to the swing arm (24) is provided on the first rotating shaft (3). A cam (10) is provided on the body (1), and a swing rod (11) is provided on one side of the cam (10). One end of the swing rod (11) is in contact with the wheel surface of the cam (10), and the other end is hinged to a pull rod (9). A connecting arm (4) is provided on the first rotating shaft (3). An upper pull rod (5) is hinged on the connecting arm (4). The upper pull rod (5) and the pull rod (9) are simultaneously hinged on the clutch swing arm (8). The clutch swing arm (8) is movable to change the distance between the hinge point of the connecting arm (4) and the hinge point of the swing rod (11).

2. The waste removal mechanism of the die-cutting machine according to claim 1, characterized in that... The body (1) is provided with a slide seat (7) with a sliding groove, and the clutch swing arm (8) has a swing arm seat (81). The swing arm seat (81) is placed in the sliding groove and is connected to the cylinder (6).

3. The waste removal mechanism of the die-cutting machine according to claim 1, characterized in that... A conveyor belt (15) is provided below the first rotating shaft (3), and one end of the conveyor belt (15) passes through the wall panel of the machine body (1).

4. The waste removal mechanism of the die-cutting machine according to claim 1, characterized in that... The tooth rack body (21) is provided with a spring (26), the middle part of the second tooth plate (22) is fixed on the rotating shaft (23), and the tail end of the second tooth plate (22) is pressed on the spring (26).

5. The waste removal mechanism of the die-cutting machine according to claim 1, characterized in that... The tail end of the body (1) is provided with a second tooth-opening device. The second tooth-opening device includes a second rotating shaft (17) provided at the tail end of the body (1), a second swing arm (171) provided on the second rotating shaft (17), and a bumper (172) installed on the second swing arm (171).

6. The waste removal mechanism of the die-cutting machine according to claim 5, characterized in that... The second tooth-opening device also includes a scraper plate seat (176) on which a movable support plate (173) is mounted.

7. The waste removal mechanism of the die-cutting machine according to claim 6, characterized in that... The tray (173) has a long groove (174) and a bolt passes through the long groove (174) to connect with the scraper tray seat (176).

8. The waste removal mechanism of the die-cutting machine according to claim 6, characterized in that... The cam (10) has a camshaft (103), a scraper spindle (105) is installed below the camshaft (103), a scraper lever (106) is fixed on the scraper spindle (105), a pressure plate (107) or a scraper blade (108) is fixed on the scraper lever (106), a scraper arm (102) is installed on the scraper spindle (105), and a scraper cam (101) is also installed on the camshaft (103). The scraper arm (102) contacts the wheel surface of the scraper cam (101).

9. The waste removal mechanism of the die-cutting machine according to claim 1, characterized in that... The second pivot (17) is also provided with a second connecting arm (16), and a connecting rod (12) is hinged on the second connecting arm (16). The swing rod (11) also has a third end (113), and the other end of the connecting rod (12) is hinged to the third end (113) of the swing rod.

10. The waste removal mechanism of the die-cutting machine according to claim 1, characterized in that... The machine body (1) is equipped with a first scraper shaft (19), and a scraper plate (14) is installed on the first scraper shaft (19). The scraper plate (14) is linked with the second swing arm (171) or the first swing arm (31), and the scraper plate (14) is coordinated with the first rotating shaft (3).

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