Automatic material changing device and die-cutting device

Abstract

This invention belongs to the technical field of die-cutting equipment and discloses an automatic material changing device and a die-cutting device. The automatic material changing device includes a frame and a feeding mechanism, a tape feeding mechanism, a material cutting and docking mechanism, a material pulling mechanism, and a tape buffer mechanism arranged sequentially on the frame. The feeding mechanism and the material pulling mechanism are arranged one-to-one and spaced apart. The feeding mechanism is used to place the material roll. The tape of the material roll used for feeding passes through the tape feeding mechanism, the material cutting and docking mechanism, and the tape buffer mechanism along a preset movement trajectory and is transported to the die-cutting device. The tape of the material roll used for preparing material passes through the tape feeding mechanism and the material cutting and docking mechanism along a preset movement trajectory and is connected to the corresponding material pulling mechanism. The material cutting and docking mechanism can align and cut two tapes. The tape feeding mechanism can fix the joint of two tapes with tape. The tape buffer mechanism can buffer the tape and adjust the buffer length of the tape. It can automatically change materials without stopping the machine, improving production efficiency.

Description

Technical Field

[0001] This invention relates to the field of die-cutting equipment technology, and in particular to an automatic material changing device and a die-cutting device. Background Technology

[0002] In the field of die-cutting equipment technology, the rotary die-cutting machine uses a continuous rotating cutter to perform die-cutting, making it one of the most efficient die-cutting machines.

[0003] After the rotary die-cutting machine finishes feeding material, it needs to replenish the material. The existing method for replenishing material in rotary die-cutting machines is to stop the machine to change the material. After changing the material, it is also necessary to test-produce a certain length of new material roll to ensure product accuracy. Because rotary die-cutting machines have high production efficiency, they need to change the material roll frequently, which results in a double waste of time and materials, greatly affecting the production efficiency of the rotary die-cutting machine.

[0004] Therefore, there is an urgent need to design an automatic material changing device and a die-cutting device to solve the above-mentioned technical problems. Summary of the Invention

[0005] One objective of this invention is to provide an automatic material changing device that can automatically change the material belt without stopping the machine, thereby improving production efficiency and saving labor costs.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] An automatic material changing device, used for feeding materials to the die-cutting mechanism, includes a frame and, sequentially arranged on the frame, a material feeding mechanism, a tape feeding mechanism, a material cutting and docking mechanism, a material pulling mechanism, and a tape buffer mechanism; wherein...

[0008] The aforementioned feeding mechanism and the aforementioned pulling mechanism are provided in a one-to-one correspondence and are each provided in two at intervals. The aforementioned feeding mechanism is used to place the material rolls, and one of the two aforementioned material rolls is used for feeding materials, while the other is used for preparing materials.

[0009] The material roll used for feeding is sequentially passed through the tape feeding mechanism, the material cutting and docking mechanism and the tape buffer mechanism along a preset motion trajectory and then transported to the die-cutting mechanism.

[0010] The material rolls used for material preparation are sequentially threaded through the tape supply mechanism and the material cutting and docking mechanism along a preset motion trajectory and connected to the corresponding material pulling mechanism.

[0011] The aforementioned material cutting and docking mechanism is configured to align and cut the two aforementioned strips so that the two aforementioned strips can be joined together;

[0012] The aforementioned tape supply mechanism is configured to apply tape to and fix the junction of the two aforementioned tapes;

[0013] The aforementioned tape buffer mechanism is configured to buffer the aforementioned tape and can adjust the buffer length of the aforementioned tape.

[0014] Optionally, the tape supply mechanism includes two oppositely arranged supply mechanisms, the tape being able to pass between the two supply mechanisms, one of the two supply mechanisms being used to apply tape to one side of the joint of the two tapes; the other being used to apply tape to the other side of the joint of the two tapes.

[0015] Optionally, the aforementioned supply mechanism includes a tape storage assembly, a tape length cutting assembly, and a tape supply assembly;

[0016] The tape storage assembly described above is used to hold tape rolls, and the tape output end of the tape roll can be pulled out by the tape length cutting assembly described above.

[0017] The tape length cutting assembly described above is used to pull the tape to a preset position and then cut it.

[0018] The tape supply assembly is disposed on one side of the tape length drawing and cutting assembly. The tape supply assembly includes a lifting drive and a tape suction cup. The tape suction cup is disposed at the output end of the lifting drive and is used to hold the tape pulled out by the tape length drawing and cutting assembly. The lifting drive can drive the tape suction cup to rise and fall.

[0019] Optionally, the tape length cutting assembly described above includes:

[0020] Clamping drive components;

[0021] A clamping member is disposed at the output end of the clamping drive member. The clamping drive member can selectively drive the clamping member to a first position to clamp the tape, or selectively drive the clamping member to a second position to stretch the clamped tape.

[0022] A cutting element is disposed on one side near the output end of the tape storage assembly. The cutting element is capable of reciprocating linear motion in a direction perpendicular to the tape to cut the stretched tape.

[0023] Optionally, the aforementioned material disconnection mechanism includes:

[0024] A tape clamping assembly is disposed on the side of the frame near the tape buffer mechanism. The tape clamping assembly includes a tape clamping member and a tape guide shaft. The tape for feeding is passed through the outer periphery of the tape guide shaft near the tape clamping member. The tape clamping member can approach or move away from the tape guide shaft to clamp or release the tape for feeding.

[0025] Two opposing suction cups are positioned between the tape clamping assembly and the tape supply mechanism. The tape passes between the two suction cups. The two suction cups can move closer or further apart to clamp and fix the two tapes.

[0026] Each of the above-mentioned docking suction cups is equipped with a lifting structure, which can drive the docking suction cups to move up and down.

[0027] At least one of the two aforementioned docking suction cups is provided with a strip cutting component, which is used to cut the two strips held by the two aforementioned docking suction cups.

[0028] Optionally, the aforementioned docking suction cup includes two suction cup components arranged sequentially along the supply direction of the aforementioned material strip. Each of the two suction cup components can independently attract the aforementioned material strip. The two suction cup components surround and form a cutting hole. The aforementioned material strip cutting component can pass through the cutting hole to cut the aforementioned material strip.

[0029] Optionally, the above-mentioned strip cutting assembly includes:

[0030] The cutting drive component is located at the rear end of the aforementioned docking suction cup;

[0031] A cutting blade is disposed at the output end of the cutting drive and passes through the docking suction cup. The cutting drive can drive the cutting blade to perform reciprocating linear motion to cut the strip held by the docking suction cup.

[0032] Optionally, the above-mentioned tape buffer mechanism includes:

[0033] Two sets of tensioning structures are arranged opposite each other, each set having several tensioning elements. The strip repeatedly overlaps the tensioning elements of the two sets of tensioning structures.

[0034] A pneumatic tension buffer assembly, with its output end connected to a set of the aforementioned tensioning structures, is capable of smoothly driving a set of the aforementioned tensioning structures to move closer to or further away from another set of the aforementioned tensioning structures.

[0035] Optionally, the above-mentioned pneumatic tension buffer assembly includes:

[0036] Buffer cylinder;

[0037] Two sets of sliding structures are arranged opposite to each other. One set of the sliding structures is installed at the output end of the buffer cylinder to be close to or away from the other set of sliding structures; the sliding structures have a plurality of guide wheels.

[0038] A buffer belt, one end of which is connected to another set of the aforementioned sliding structures, and the other end which reciprocates over the guide wheels of the two sets of the aforementioned sliding structures and is connected to the aforementioned tensioning structure.

[0039] Another objective of this invention is to provide a die-cutting device that can automatically change the feed strip without stopping the machine, thereby improving production efficiency and service life.

[0040] To achieve this objective, the present invention adopts the following technical solution:

[0041] The die-cutting apparatus includes a die-cutting mechanism and an automatic material changing device as described in any of the above embodiments, wherein the automatic material changing device is used to supply the material strip to the die-cutting mechanism.

[0042] The beneficial effects of this invention are:

[0043] This invention provides an automatic material changing device and a die-cutting device. When the material rolls used for feeding are about to run out and need to be changed, the material cutting and docking mechanism aligns the two material strips and cuts them, with the waste material naturally falling off. Then, the tape feeding mechanism applies tape to the joint of the two cut material strips, connecting them and thus enabling automatic material changing. Furthermore, during this process, the material strip buffering mechanism reduces the buffer length of the material strip, ensuring that the buffered material strip can not only be used to feed the die-cutting mechanism but also prevents the material strip at the material cutting and docking mechanism from being fed to the die-cutting mechanism. After connecting the two material strips, the material strip buffering mechanism restores its initial buffer length, pre-buffering a certain length of material strip for the next material changing. This material changing process requires no machine downtime and no manual operation, saving time and labor, improving production efficiency, and avoiding the material cost waste caused by re-producing a certain length of new material strip after replacing the material roll. Attached Figure Description

[0044] Figure 1 This is an isometric view of the automatic material changing device provided in a specific embodiment of the present invention;

[0045] Figure 2 This is a front view of the automatic material changing device provided in a specific embodiment of the present invention;

[0046] Figure 3 This is an isometric view of a portion of the structure of the automatic material changing device provided in a specific embodiment of the present invention;

[0047] Figure 4 This is an isometric view of the tape supply mechanism provided in a specific embodiment of the present invention;

[0048] Figure 5 yes Figure 4 A magnified view of a section at point A in the middle;

[0049] Figure 6 This is an isometric view of the material cutting and docking mechanism provided in a specific embodiment of the present invention;

[0050] Figure 7 This is an isometric view of the strip cutting assembly provided in a specific embodiment of the present invention;

[0051] Figure 8 This is an isometric view of the docking suction cup provided in a specific embodiment of the present invention;

[0052] Figure 9 This is an isometric view of the tape buffer mechanism provided in a specific embodiment of the present invention;

[0053] Figure 10 This is an isometric view of the pneumatic tension buffer assembly provided in a specific embodiment of the present invention.

[0054] In the picture:

[0055] 10. Rack;

[0056] 20. Feeding mechanism; 21. Feeding shaft; 22. Guide shaft;

[0057] 30. Tape supply mechanism;

[0058] 31. Supply mechanism; 311. Tape storage assembly; 3111. Tape feeding shaft; 3112. Clamping claw; 3113. Guide tape shaft; 312. Tape length cutting assembly; 3121. Clamping drive; 3122. Clamping component; 3123. Cutting component; 3124. Third drive; 313. Tape supply assembly; 3131. Lifting drive; 3132. Tape suction cup; 3133. Fourth drive; 3134. Feed drive; 32. Tape roll; 321. Tape;

[0059] 40. Material cutting and docking mechanism; 41. Strip clamping assembly; 411. Clamping component; 412. Strip guide shaft; 413. Fifth driving component; 42. Docking suction cup; 421. Suction cup component; 422. Cutting hole; 43. Lifting structure; 44. Strip cutting assembly; 441. Cutting driving component; 442. Cutting blade; 45. Sixth driving component;

[0060] 50. Material pulling mechanism; 51. Material pulling drive component; 52. Gripper;

[0061] 60. Belt buffer mechanism; 61. Tensioning structure; 611. Tensioning component; 62. Pneumatic tension buffer assembly; 621. Buffer cylinder; 622. Sliding structure; 6221. Guide wheel; 623. Buffer belt; 624. Proximity sensor; 63. Tension sensor;

[0062] 200. Material roll; 201. Material strip. Detailed Implementation

[0063] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0064] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0065] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0066] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0067] This embodiment provides an automatic material changing device for feeding the die-cutting mechanism. By using this device, the material strip 201 can be automatically changed without stopping the machine, thus improving production efficiency and saving labor costs. In this embodiment, Figure 1 The X direction in the figure is the width direction of the strip 201; Figure 1 The Y direction in the figure represents the supply direction of the tape 201 on the tape buffer mechanism 60. Figure 1 The Z direction is the supply direction of the material belt 201 from the feeding mechanism 20 to the material belt buffer mechanism 60; and the X, Y and Z directions are perpendicular to each other.

[0068] Specifically, such as Figure 1 and Figure 2 As shown, the automatic material changing device includes a frame 10 and a feeding mechanism 20, a tape feeding mechanism 30, a material cutting and docking mechanism 40, a material pulling mechanism 50, and a tape buffer mechanism 60 sequentially arranged on the frame 10. The feeding mechanism 20 and the material pulling mechanism 50 are arranged in a one-to-one correspondence and are spaced apart in pairs. The feeding mechanism 20 is used to hold the material roll 200; one of the two material rolls 200 is used for feeding, and the other is used for preparing material. The tape 201 of the material roll 200 used for feeding passes sequentially through the tape feeding mechanism 30 and the material cutting and docking mechanism 40 along a preset motion trajectory. The material strip 201 of the material roll 200 used for material preparation is sequentially passed through the tape supply mechanism 30 and the material cutting and docking mechanism 40 along a preset motion trajectory and connected to the corresponding material pulling mechanism 50; the material cutting and docking mechanism 40 is configured to align and cut the two material strips 201 so that the two material strips 201 are joined; the tape supply mechanism 30 is configured to fix the joint of the two material strips 201 with tape 321; the material strip buffer mechanism 60 is configured to buffer the material strip 201 and can adjust the buffer length of the material strip 201.

[0069] It should be noted that the above-mentioned preset motion trajectory is the supply route of the material belt 201, which can be changed according to actual needs. In this embodiment, the material belt 201 is sequentially passed through the tape supply mechanism 30 and the material cutting and docking mechanism 40, and then placed in the corresponding mechanism to achieve the function of material supply or material preparation.

[0070] For example, in this embodiment, the feeding mechanism 20, the tape feeding mechanism 30, the material cutting and docking mechanism 40, the material pulling mechanism 50, and the tape buffer mechanism 60 are arranged sequentially from bottom to top along the Z direction; the feeding mechanism 20 and the material pulling mechanism 50 are each provided with two at intervals along the Y direction, and the tape 201 moves along the Z direction.

[0071] In this embodiment, when the material roll 200 used for feeding is about to be used up and needs to be replaced, the material cutting and docking mechanism 40 aligns the two material strips 201 and cuts them, and the cut waste material naturally falls off. Then, the tape feeding mechanism 30 applies tape 321 to the joint of the two material strips 201 after cutting, realizing the connection of the two material strips 201, thus realizing the automatic material replacement of the automatic material replacement device. In addition, during this process, the material strip buffering mechanism 60 reduces the buffer length of the material strip 201, so that the material strip 201 buffered by the material strip buffering mechanism 60 can not only be used to feed the die-cutting mechanism, but also ensures that the material strip 201 at the material cutting and docking mechanism 40 will not be sent to the die-cutting mechanism for feeding. After the connection of the two material strips 201 is completed, the material strip buffering mechanism 60 restores the initial buffer length of the material strip 201, and buffers a certain length of material strip 201 in advance for the next material replacement. The material change process does not require machine shutdown and is done manually, saving time and effort. It also improves production efficiency and avoids the waste of material costs caused by re-producing a certain length of new material strip 201 after replacing the new material roll 200.

[0072] It should be noted that after a material change is completed, the operator can change the used material roll 200 on the automatic material changing device while the die-cutting mechanism is working. At the same time, the material strip 201 of the changed material roll 200 is sequentially threaded along the preset motion trajectory through the tape supply mechanism 30 and the material cutting docking mechanism 40 and connected to the corresponding material pulling mechanism 50, in preparation for the next material change.

[0073] In this embodiment, as Figures 1 to 3 As shown, the feeding mechanism 20 includes a first driving member (not shown in the figure) and a feeding shaft 21. The first driving member is mounted on the frame 10, and a material roll 200 is mounted on the feeding shaft 21. By driving the first driving member, the material roll 200 on the feeding shaft 21 rotates with the feeding shaft 21, thereby realizing the supply of the material belt 201 on the material roll 200.

[0074] Optionally, a transmission component may be provided between the first driving component and the feeding shaft 21 to adjust the feeding speed. It should be noted that the transmission component can be a belt drive or a gear drive, etc., as long as it can achieve the transmission effect, and no specific limitation is made here.

[0075] Optionally, a sensor is also provided on the feeding shaft 21 to detect whether the material roll 200 has been used up, thereby enabling the automatic material changing device to automatically change the material.

[0076] Furthermore, the feeding mechanism 20 also includes multiple guide shafts 22, which are arranged along the preset motion trajectory of the material belt 201 to guide the material belt 201 so that the material belt 201 runs along the preset motion trajectory without deviating.

[0077] Specifically, there are five guide shafts 22. Two guide shafts 22 are arranged between the two feeding shafts 21 to guide the material strip 201 coming out of the material roll 200. Two more guide shafts 22 are arranged between the feeding mechanism 50 and the cutting and docking mechanism 40 to guide the material strip 201 of the feeding shaft 21 to the corresponding feeding mechanism 50. The remaining guide shaft 22 is arranged between the cutting and docking mechanism 40 and the material strip buffer mechanism 60 to guide the material strip 201 entering the material strip buffer mechanism 60.

[0078] In this embodiment, as Figures 1 to 3 As shown, the material pulling mechanism 50 includes a material pulling drive 51 and a gripper 52. The material pulling drive 51 can drive the gripper 52 to move along the Z direction, thereby pulling and fixing the material strip 201. That is, the operator pulls the material strip 201 from the material roll 200 used for material preparation to the gripper 52, so that the material strip 201 is clamped by the gripper 52. Then, by moving the material pulling drive 51 along the Z direction toward the side away from the unloading mechanism 20, the material strip 201 can be tightened.

[0079] Optionally, the material pulling drive component 51 can be a cylinder, which has a simple structure, is lightweight, easy to install and maintain, and has good adaptability to the working environment.

[0080] In this embodiment, as Figure 4 and Figure 5 As shown, the tape supply mechanism 30 includes two oppositely arranged supply mechanisms 31. The tape 201 can pass between the two supply mechanisms 31. One of the two supply mechanisms 31 is used to apply tape 321 to one side of the joint of the two tapes 201 and fix it; the other is used to apply tape 321 to the other side of the joint of the two tapes 201, so as to achieve tape 321 fixing on both sides of the joint of the two tapes 201.

[0081] For example, in this embodiment, two supply mechanisms 31 are spaced apart along the Y direction, and two material belts 201 move from the middle of the two supply mechanisms 31 along the Z direction.

[0082] Specifically, the supply mechanism 31 includes a tape storage component 311, a tape length-cutting component 312, and a tape supply component 313. The tape storage component 311 is used to hold the tape roll 32, and the output end of the tape 321 of the tape roll 32 can be pulled by the tape length-cutting component 312. The tape length-cutting component 312 is used to cut the tape 321 after pulling it to a preset position. The tape supply component 313 is disposed on one side of the tape length-cutting component 312, and the tape supply component 313 is used to transport the cut tape 321 to the junction of the two tapes 201 for bonding, thereby realizing the supply and bonding of the tape 321.

[0083] Specifically, the tape storage assembly 311 includes a second drive unit, a tape feeding shaft 3111, a clamping claw 3112, and multiple guide tape shafts 3113. The output end of the second drive unit is connected to the tape feeding shaft 3111, which is used to hold the tape roll 32. The clamping claw 3112 is located at the output end of the tape 321 to clamp and fix the tape 321. The multiple guide tape shafts 3113 are arranged between the clamping claw 3112 and the tape feeding shaft 3111 along the movement trajectory of the tape 321 to achieve the effect of tensioning and pre-buffering of the tape 321. At the same time, the guide tape shafts 3113 can direct the output end of the tape 321 toward the tape length cutting assembly 312 for pulling out. By driving the second driving component, the tape roll 32 is rotated to feed the tape 321. The tape 321 passes through each guide tape shaft 3113 until it reaches the clamping claw 3112. The tape 321 extending out of the clamping claw 3112 faces the tape length pulling and cutting assembly 312 so as to facilitate the pulling of the tape length pulling and cutting assembly 312.

[0084] Optionally, the clamping claw 3112 is a pneumatic clamping claw 3112, that is, the clamping claw 3112 is moved by air pressure to realize the opening and closing of the clamping claw 3112.

[0085] Furthermore, the tape length-cutting assembly 312 includes a clamping drive 3121, a clamping member 3122, and a cutting member 3123; the clamping member 3122 is disposed at the output end of the clamping drive 3121, and the clamping drive 3121 can selectively drive the clamping member 3122 to a first position to clamp the tape 321, or selectively drive the clamping member 3122 to a second position to stretch the clamped tape 321; the cutting member 3123 is disposed on one side near the output end of the tape storage assembly 311, and the cutting member 3123 can reciprocate linearly in a direction perpendicular to the tape 321 to cut the stretched tape 321. When tape 321 is needed, the clamping drive 3121 drives the clamping member 3122 to the first position to clamp the tape 321. At this time, the clamping claw 3112 is released, and the clamping drive 3121 drives the clamping member 3122 to reset so that the tape 321 is of a preset length. Then, it is cut by the cutting member 3123 to complete the acquisition of tape 321.

[0086] It should be noted that the first position is the position where the clamping member 3122 contacts the tape 321 located at the clamping claw 3112, and the second position is the position after the clamping member 3122 is reset, so that the tape 321 is of a preset length. This preset length is the length of the tape 321 used in one go.

[0087] For example, in this embodiment, the clamping member 3122 reciprocates along the X direction, which is also the direction of the width of the strip 201, so that the cut tape 321 can be directly used to apply tape 321 to the strip 201 without turning, thus improving production efficiency.

[0088] Optionally, the cutting member 3123 is equipped with a third driving member 3124 to drive the cutting member 3123.

[0089] Optionally, both the clamping drive 3121 and the third drive 3124 are cylinders, which can realize the reciprocating linear motion of the clamping member 3122 and the cutting member 3123.

[0090] Furthermore, the tape supply assembly 313 includes a lifting drive 3131 and a tape suction cup 3132. The tape suction cup 3132 is disposed at the output end of the lifting drive 3131. The tape suction cup 3132 is used to hold the tape 321 pulled out by the tape length cutting assembly 312. The lifting drive 3131 can drive the tape suction cup 3132 to rise and fall.

[0091] Optionally, the lifting drive component 3131 is a cylinder, which can ensure the precise application of tape 321 by the tape suction cup 3132.

[0092] Furthermore, the tape supply assembly 313 also includes a fourth drive member 3133, which is mounted on the frame 10. A lifting drive member 3131 is mounted on the fourth drive member 3133. The fourth drive member 3133 is used to drive the tape suction cup 3132 to move in the X direction, so that the position of the tape 321 can be adjusted, that is, to ensure that the tape 321 can be completely attached to the material belt 201.

[0093] Furthermore, the tape suction cup 3132 is provided with multiple holes. The tape suction cup 3132 is a pneumatic structure, and air pressure can be used to make the tape suction cup 3132 suction or release the tape 321.

[0094] Optionally, the tape suction cup 3132 has a feed drive 3134, which is connected to the tape suction cup 3132 to ensure the adhesion of the tape 321. At the same time, when the lifting drive 3131 drives the tape suction cup 3132 to adhere the tape 321 to the material strip 201, the feed drive 3134 can drive the tape suction cup 3132 to feed, so as to achieve complete adhesion of the tape 321 to the material strip 201 and avoid the situation where the tape 321 is not completely adhered to the material strip 201.

[0095] During operation, the second drive unit drives the tape roll 32 to rotate to feed the tape 321. The tape 321 passes through each guide tape shaft 3113 until it reaches the clamping claw 3112, which clamps the tape 321. After the clamping drive unit 3121 drives the clamping member 3122 to the first position to clamp the tape 321, the clamping claw 3112 is released. The clamping drive unit 3121 then drives the clamping member 3122 to reset so that the tape 321 is at a preset length. Then, the fourth drive unit 3133 and the lifting drive unit 3131 drive the tape suction cup 3132 to the tape 321 to suction the stretched tape 321. Finally, the third drive unit 3124 drives the cutting member 3123 to cut the tape 321, completing one acquisition of the tape 321. At this time, the fourth driving component 3133 and the lifting driving component 3131 drive the tape suction cup 3132 to the material cutting and docking mechanism 40, and the feeding driving component 3134 drives the tape suction cup 3132 to attach the tape 321 at the junction of the two material strips 201.

[0096] In this embodiment, as Figure 6 and Figure 7 As shown, the material cutting and docking mechanism 40 includes a strip clamping assembly 41 and two opposing docking suction cups 42. The strip clamping assembly 41 is located on the side of the frame 10 near the strip buffer mechanism 60. The docking suction cups 42 are located between the strip clamping assembly 41 and the tape supply mechanism 30. The strip 201 is supplied by the feeding mechanism 20 and passes between the two docking suction cups 42. The strip clamping assembly 41 is used to clamp the strip 201 used for feeding, ensuring that the strip 201 on the feeding side of the strip clamping assembly 41 stops running. The two docking suction cups 42 can move closer or further away from each other to clamp and fix the two strips 201, realizing the docking of the two strips 201. Furthermore, at least one of the two docking suction cups 42 is provided with a strip cutting assembly 44, which is used to cut the two strips 201 held by the two docking suction cups 42.

[0097] During operation, the material belt clamping assembly 41 stops the material belt 201 to be supplied at one end before the material belt buffer mechanism 60. The two docking suction cups 42 respectively attract the material belt 201 to be supplied and another material belt 201. The two material belts 201 are docked and fixed by the mutual approach of the two docking suction cups 42. Finally, the two material belts 201 are cut by the material belt cutting assembly 44, and the joint of the two material belts 201 is glued and fixed by the tape supply mechanism 30, etc., to complete the material change.

[0098] Specifically, the tape clamping assembly 41 includes a tape clamping member 411 and a tape guide shaft 412. A tape 201 for feeding is threaded through the outer periphery of the tape guide shaft 412 near the tape clamping member 411. The tape clamping member 411 can move closer to or further away from the tape guide shaft 412 to clamp or release the tape 201 for feeding. During operation, the tape clamping member 411 is driven to move closer to the tape guide shaft 412 to stop the tape 201 for feeding at the end before the tape buffer mechanism 60, facilitating the replacement of the two tapes 201.

[0099] Optionally, the strip clamping member 411 is equipped with a fifth driving member 413 to drive the clamping member 411 to approach or move away from the strip guide shaft 412. Specifically, the fifth driving member 413 is a cylinder that can achieve precise clamping and positioning of the strip 201.

[0100] Furthermore, such as Figure 8 As shown, the docking suction cup 42 includes two suction cup components 421 arranged sequentially along the supply direction of the material strip 201. Both suction cup components 421 can independently suction the material strip 201. The two suction cup components 421 surround each other to form a cutting hole 422. The material strip cutting component 44 can pass through the cutting hole 422 to cut the material strip 201.

[0101] During operation, the two suction cups 42 clamp the two strips 201 together, and then the strip cutting component 44 cuts the two strips 201 through the cutting hole 422. After cutting, the two suction cups 42 separate, and the suction cup 421 on the tail side of the strip 201 used for feeding stops clamping, so that the tail of the strip 201 used for feeding falls off naturally. The suction cup 421 on the top side of the strip 201 used for preparing materials stops clamping, so that the tail of the strip 201 used for preparing materials falls off naturally.

[0102] Optionally, the suction cup 421 is provided with multiple air holes and is connected to an air pump. The suction cup 421 can be used to attract and release the material strip 201 by air pressure.

[0103] In some embodiments, the docking suction cup 42 is equipped with a sixth driving member 45, which is used to drive the two docking suction cups 42 to move closer or further apart so that the two docking suction cups 42 can dock the two strips 201.

[0104] Optionally, the sixth driving component 45 is a cylinder, which can achieve precise displacement of the docking suction cup 42.

[0105] In some embodiments, each docking suction cup 42 is equipped with a lifting structure 43, which can drive the docking suction cup 42 to move up and down. The lifting structure 43 is provided to ensure that when the tape supply component 313 in the tape supply mechanism 30 applies tape 321 to the two tapes 201, the corresponding docking suction cup 42 can avoid it, so that the tape supply component 313 can run to the junction of the two tapes 201 and apply tape 321 to the junction.

[0106] Optionally, the lifting structure 43 is made of a cylinder, which pushes the docking suction cup 42 to lift and lower, so as to avoid the tape supply mechanism 30.

[0107] Furthermore, such as Figure 7 As shown, the strip cutting assembly 44 includes a cutting drive 441 and a cutting blade 442. The cutting drive 441 is located at the rear end of the docking suction cup 42. The cutting blade 442 is located at the output end of the cutting drive 441 and passes through the docking suction cup 42. The cutting drive 441 can drive the cutting blade 442 to perform reciprocating linear motion to cut the strip 201 held by the docking suction cup 42. After the two strips 201 are clamped and docked by the two docking suction cups 42, the cutting drive 441 drives the cutting blade 442 to move to cut the two strips 201.

[0108] For example, in this embodiment, the cutting blade 442 moves along the X direction, that is, along the width direction of the strip 201, and cuts the entire strip 201.

[0109] In this embodiment, as Figure 9 As shown, the tape buffer mechanism 60 includes a pneumatic tension buffer assembly 62 and two sets of tensioning structures 61 arranged opposite each other. Each set of tensioning structures 61 has several tensioning elements 611. The tape 201 reciprocates by overlapping the tensioning elements 611 of the two sets of tensioning structures 61, and the tape 201 can be tensioned by the two sets of tensioning structures 61. The output end of the pneumatic tension buffer assembly 62 is connected to one set of tensioning structures 61. The pneumatic tension buffer assembly 62 can smoothly drive one set of tensioning structures 61 to move closer to or away from the other set of tensioning structures 61, so that the length of the tape 201 in the tape buffer mechanism 60 can decrease or increase accordingly.

[0110] During material change, the pneumatic tension buffer assembly 62 drives one set of tensioning structures 61 to approach another set of tensioning structures 61, thereby reducing the length of the material strip 201 in the material strip buffer mechanism 60 to supply the die-cutting mechanism for die cutting, while ensuring that the material strip 201 at the material cutting docking mechanism 40 will not be displaced, thus affecting the material change.

[0111] During normal operation, the pneumatic tension buffer assembly 62 drives one set of tensioning structures 61 away from another set of tensioning structures 61, thereby increasing the length of the material belt 201 in the material belt buffer mechanism 60 to ensure the length of the material belt 201 that can be buffered during subsequent material changes.

[0112] Specifically, one of the two sets of tensioning structures 61 has an odd number of tensioning elements 611, and the other set has an even number of tensioning elements 611. The material strip 201 passes through the structure in a crisscross pattern, which can buffer a longer material strip 201.

[0113] Furthermore, such as Figure 10 As shown, the pneumatic tension buffer assembly 62 includes a buffer cylinder 621, a buffer belt 623, and two sets of sliding structures 622 arranged opposite each other. One set of sliding structures 622 is installed at the output end of the buffer cylinder 621 to move closer to or further away from the other set of sliding structures 622. The sliding structure 622 has several guide wheels 6221. One end of the buffer belt 623 is connected to the other set of sliding structures 622, and the other end reciprocates over the guide wheels 6221 of the two sets of sliding structures 622 and is connected to the tensioning structure 61. That is, when the buffer cylinder 621 is driven, the two sliding structures 622 move closer to each other to achieve a slow increase in the length of the output end of the buffer belt 623, thereby achieving a slow opening of the two sets of tensioning structures 61; or when the two sets of tensioning structures 61 move closer to each other, the length of the output end of the buffer belt 623 decreases, and is fed back to the buffer cylinder 621 after being transmitted through the two sets of sliding structures 622, so that the two sets of tensioning structures 61 can move closer to each other smoothly.

[0114] Optionally, the pneumatic tension buffer assembly 62 further includes two proximity sensors 624, which are spaced apart along the setting direction of the two tensioning structures 61. During operation, the tensioning structure 61 driven by the buffer cylinder 621 is equipped with a sensing element. When the sensing element is detected by the proximity sensor 624, the movement of the corresponding tensioning structure 61 stops. That is, the maximum stroke of the tensioning structure 61 is the distance between the two proximity sensors 624, which can limit the maximum distance between the two tensioning structures 61.

[0115] Furthermore, the strip buffer mechanism 60 also includes a tension sensor 63, which is disposed above the two sets of tensioning structures 61. After the strip 201 passes through the two sets of tensioning structures 61, it is supplied to the die-cutting mechanism through the tension sensor 63. The tension sensor 63 can monitor the tension change of the strip 201 in real time and transmit the corresponding signal to the die-cutting mechanism for tension adjustment, thereby reducing the tension fluctuations caused by the two tensioning structures 61 of the strip buffer mechanism 60 moving closer or further apart, and improving stability.

[0116] It should be noted that in this embodiment, the two sets of tensioning structures 61 are pushed away from each other by the buffer cylinder 621, and the two sets of tensioning structures 61 are pushed closer to each other by the feeding length of the die-cutting mechanism. That is, one end of the material strip 201 is clamped by the material strip clamping component 41 in the material cutting and docking mechanism 40. When the automatic material changing device continues to supply material to the die-cutting mechanism, the material strip 201 on the material strip buffer mechanism 60 continues to supply material, so that the material strip 201 pushes the two sets of tensioning structures 61 closer to each other, ensuring that the material strip 201 will not loosen too much at once, causing the material strip 201 to be untensioned by the tensioning structure 61 and causing machine failure, thus ensuring the service life of the automatic material changing device.

[0117] This embodiment also provides a die-cutting device, including a die-cutting mechanism and an automatic material changing device as described in any of the above solutions. The automatic material changing device is used to supply the material strip 201 to the die-cutting mechanism. By using the automatic material changing device, material changing without stopping the machine is achieved, which improves production efficiency and extends service life.

[0118] The working process of the automatic material changing device in this embodiment during material changing is described below.

[0119] First, after the feed roll 200 on the feeding shaft 21 is used up, the strip clamping member 411 is driven to move close to the strip guide shaft 412, so that the feed strip 201 stops running at one end before the strip buffer mechanism 60; at this time, the feed strip 201 buffered on the strip buffer mechanism 60 is used to supply the die-cutting mechanism, that is, the shortening of the strip 201 drives the two sets of tensioning structures 61 to move closer to each other, so as to realize the feeding of the die-cutting mechanism.

[0120] Then, the two suction cups 42 clamp the two strips 201 together, and the strip 201 is cut along the X direction by the strip 201 cutter 442. After cutting, the two suction cups 42 separate, and the suction cup 421 on the tail side of the strip 201 used for feeding stops clamping, so that the tail of the strip 201 used for feeding falls off naturally. The suction cup 421 on the top side of the strip 201 used for preparing materials stops clamping, so that the tail of the strip 201 used for preparing materials falls off naturally. Then, the two suction cups 42 are driven to clamp the two strips 201, and one suction cup 42 stops clamping and is moved aside by the lifting structure 43, so that the two strips 201 are aligned and clamped to the other suction cup 42.

[0121] During the operation of the material cutting and docking mechanism 40, the two supply mechanisms 31 in the tape supply mechanism 30 also perform corresponding operations. Specifically, the clamping drive 3121 drives the clamping member 3122 to the first position to clamp the tape 321, the clamping claw 3112 releases, and the clamping drive 3121 drives the clamping member 3122 to reset so that the tape 321 is at a preset length. Then, the tape suction cup 3132 is driven to the tape 321 to suction the stretched tape 321. The cutting member 3123 is driven to cut the tape 321, completing one acquisition of the tape 321.

[0122] Finally, the lifting drive 3131 of the corresponding supply mechanism 31 drives the tape suction cup 3132 to the material cutting and docking mechanism 40, and attaches the joint of the two unattached surfaces of the two tapes 201; then drives the two docking suction cups 42 to attach again, replacing the docking suction cups 42 of the two tapes 201. The lifting drive 3131 of the other supply mechanism 31 drives the tape suction cup 3132 to the material cutting and docking mechanism 40, and attaches the joint of the two unattached surfaces of the two tapes 201, thus completing the pasting and fixing of the two surfaces of the two tapes 201; then the tape clamping member 411 and the docking suction cup 42 are released from the tapes 201, thus completing the material replacement.

[0123] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. An automatic material changing device for feeding materials to a die-cutting mechanism, characterized in that, It includes a frame (10) and, sequentially arranged on the frame (10), a feeding mechanism (20), a belt feeding mechanism (30), a material cutting and docking mechanism (40), a material pulling mechanism (50), and a belt buffer mechanism (60); wherein, The feeding mechanism (20) and the pulling mechanism (50) are provided in a one-to-one correspondence and are each provided in two at intervals. The feeding mechanism (20) is used to place the material roll (200). One of the two material rolls (200) is used for feeding material and the other is used for preparing material. The material roll (200) used for feeding the material is sequentially threaded through the tape feeding mechanism (30), the material cutting and docking mechanism (40) and the material tape buffer mechanism (60) along a preset motion trajectory and then transported to the die-cutting mechanism; The material strip (201) of the material roll (200) used for material preparation is sequentially threaded through the tape supply mechanism (30) and the material cutting and docking mechanism (40) along a preset motion trajectory and connected to the corresponding material pulling mechanism (50); The material cutting and docking mechanism (40) is configured to align and cut the two strips (201) so that the two strips (201) are joined together; The tape supply mechanism (30) is configured to apply tape (321) to the joint of the two tapes (201) to secure them. The tape buffer mechanism (60) is configured to buffer the tape (201) and can adjust the buffer length of the tape (201); The tape supply mechanism (30) includes two oppositely arranged supply mechanisms (31), the tape (201) can pass between the two supply mechanisms (31), one of the two supply mechanisms (31) is used to apply tape (321) to one side of the joint of the two tapes (201) to fix it; the other is used to apply tape (321) to the other side of the joint of the two tapes (201) to fix it. The tape buffer mechanism (60) includes: Two sets of tensioning structures (61) are arranged opposite to each other. Each set of tensioning structures (61) has a plurality of tensioning elements (611). The material strip (201) is repeatedly overlapped with the tensioning elements (611) of the two sets of tensioning structures (61). A pneumatic tension buffer assembly (62) has its output end connected to a set of tensioning structures (61). The pneumatic tension buffer assembly (62) can smoothly drive a set of tensioning structures (61) to move closer to or away from another set of tensioning structures (61). The pneumatic tension buffer assembly (62) includes: Buffer cylinder (621); Two sets of sliding structures (622) are arranged opposite to each other. One set of sliding structures (622) is installed at the output end of the buffer cylinder (621) to be close to or away from the other set of sliding structures (622). The sliding structure (622) has a plurality of guide wheels (6221). A buffer strip (623) is provided, one end of which is connected to another set of sliding structures (622), and the other end is reciprocally overlapped with the guide wheels (6221) of the two sets of sliding structures (622) and connected to the tensioning structure (61).

2. The automatic material changing device according to claim 1, characterized in that, The supply mechanism (31) includes a tape storage assembly (311), a tape length cutting assembly (312), and a tape supply assembly (313); The tape storage assembly (311) is used to hold the tape roll (32), and the output end of the tape (321) of the tape roll (32) can be pulled by the tape length pulling and cutting assembly (312); The tape length pulling and cutting assembly (312) is used to pull the tape (321) to a preset position and then cut it; The tape supply assembly (313) is disposed on one side of the tape length pulling and cutting assembly (312). The tape supply assembly (313) includes a lifting drive (3131) and a tape suction cup (3132). The tape suction cup (3132) is disposed at the output end of the lifting drive (3131). The tape suction cup (3132) is used to hold the tape (321) pulled out by the tape length pulling and cutting assembly (312). The lifting drive (3131) can drive the tape suction cup (3132) to rise and fall.

3. The automatic material changing device according to claim 2, characterized in that, The tape length cutting assembly (312) includes: Clamping drive (3121); A clamping member (3122) is disposed at the output end of the clamping drive member (3121). The clamping drive member (3121) can selectively drive the clamping member (3122) to a first position to clamp the tape (321), or selectively drive the clamping member (3122) to a second position to stretch the clamped tape (321). A cutting element (3123) is disposed on one side near the output end of the tape storage assembly (311). The cutting element (3123) can reciprocate linearly in a direction perpendicular to the tape (321) to cut the stretched tape (321).

4. The automatic material changing device according to claim 1, characterized in that, The material cutting and docking mechanism (40) includes: A tape clamping assembly (41) is disposed on the side of the frame (10) near the tape buffer mechanism (60). The tape clamping assembly (41) includes a tape clamping member (411) and a tape guide shaft (412). The tape (201) for feeding is passed through the outer periphery of the tape guide shaft (412) near the tape clamping member (411). The tape clamping member (411) can approach or move away from the tape guide shaft (412) to clamp or release the tape (201) for feeding. Two opposing suction cups (42) are positioned between the tape clamping assembly (41) and the tape supply mechanism (30). The tape (201) passes between the two suction cups (42). The two suction cups (42) can move closer or further apart to clamp and fix the two tapes (201). Each of the docking suction cups (42) is equipped with a lifting structure (43), which can be driven to lift the docking suction cup (42) by the lifting structure (43); At least one of the two docking suction cups (42) is provided with a strip cutting component (44) for cutting the two strips (201) held by the two docking suction cups (42).

5. The automatic material changing device according to claim 4, characterized in that, The docking suction cup (42) includes two suction cup components (421) arranged sequentially along the supply direction of the material strip (201). Both suction cup components (421) can independently attract the material strip (201). The two suction cup components (421) form a cutting hole (422) between them. The material strip cutting component (44) can pass through the cutting hole (422) to cut the material strip (201).

6. The automatic material changing device according to claim 4, characterized in that, The strip cutting assembly (44) includes: A cutting drive (441) is disposed at the rear end of the docking suction cup (42); A cutting blade (442) is disposed at the output end of the cutting drive (441) and passes through the docking suction cup (42). The cutting drive (441) can drive the cutting blade (442) to perform reciprocating linear motion to cut the material strip (201) held by the docking suction cup (42).

7. A die-cutting device, characterized in that, It includes a die-cutting mechanism and an automatic material changing device as described in any one of claims 1-6, the automatic material changing device being used to supply the strip (201) to the die-cutting mechanism.

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