A full-automatic adhesive die cutting machine

Abstract

The application discloses a full-automatic back glue die-cutting machine, and relates to the technical field of die-cutting machines.The circular knife die-cutting mechanism comprises a circular knife roller, an anvil roller and a die changing assembly.The circular knife roller and the anvil roller are arranged in parallel and can rotate.The circular knife roller comprises a circular end plate and a roller barrel.The roller barrel is formed by circularly splicing a plurality of cutter units along the circular end plate.Each cutter unit is slidably connected to the circular end plate through a sliding block rotatably connected to the cutter unit.Each cutter unit has three cutter dies of different specifications and arranged in a circumferential array.The die changing assembly is used to drive each cutter unit to radially slide apart on the circular end plate and rotate to switch the cutter dies facing the outside of the roller barrel.In the circular knife die-cutting mechanism, the roller barrel is formed by circularly splicing a plurality of cutter units, so that the circular knife roller can store three sets of cutter dies.Each cutter unit of the roller barrel can be dispersed and rotated synchronously to switch the cutter dies facing the outside by the die changing assembly, so that the quick die changing operation of the circular knife roller is realized, and the high-frequency production switching requirement is met.

Description

Technical Field

[0001] This invention relates to the field of die-cutting machine technology, specifically to a fully automatic adhesive-backed die-cutting machine. Background Technology

[0002] Adhesive-backed roll materials are common auxiliary materials in industries such as electronics, packaging, and medical. They need to be die-cut and shaped before use. Fully automatic adhesive-backed die-cutting machines are the mainstream processing equipment in the industry. The whole machine achieves automated continuous processing of roll materials through the cooperation of four major mechanisms: feeding, circular die-cutting, waste discharge, and material collection. Among them, the circular die-cutting mechanism adopts the principle of circular pressing and rolling die-cutting, which is more efficient and less wasteful than flat die-cutting. It is the core processing unit of the equipment. However, the existing conventional circular die-cutting structure has obvious shortcomings in die-changing.

[0003] Traditional rotary die-cutting mechanisms typically consist of an integral die roller paired with a fixed die holder. The die is secured using multiple bolts, keyways, and locating pins, resulting in a cumbersome installation process. While this ensures die-cutting accuracy, it is no longer suitable for today's high-frequency production changeover requirements. In actual production, different specifications of adhesive-backed products require the replacement of dedicated die-cutting molds. Traditional mold changes necessitate stopping the machine to disassemble protective and locking components. After disassembling and reassembling the die with tools, coaxiality and die-cutting pressure must be repeatedly adjusted. Each mold change takes 20-30 minutes, consuming significant production time and reducing equipment utilization. Summary of the Invention

[0004] The purpose of this invention is to provide a fully automatic adhesive die-cutting machine to solve the problem of cumbersome and inefficient mold-changing process in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a fully automatic adhesive die-cutting machine, comprising a feeding mechanism, a circular die-cutting mechanism, a waste discharge mechanism, and a receiving mechanism mounted on a frame. The circular die-cutting mechanism includes a circular die roller, an anvil roller, and a die-changing assembly. The circular die roller and the anvil roller are arranged in parallel and are rotatable. The circular die roller includes two coaxial circular end plates and a roller located between the two circular end plates. The roller is formed by multiple cutter units circumferentially spliced ​​together along the circular end plates. Each cutter unit is slidably connected to the circular end plates via a slider rotatably connected thereon. Each cutter unit has three dies of different specifications arranged in a circular array. The die-changing assembly is used to drive each cutter unit to slide radially apart on the circular end plates and rotate to switch the die facing outwards from the roller.

[0006] Furthermore, the mold changing assembly includes a slider that slides axially on a round end plate, a first driving member that drives the slider to move, and a plurality of mold changing units on the slider that correspond one-to-one with each tool unit.

[0007] Furthermore, each mold-changing unit includes a connecting rod, a contact element, a trigger block, and a positioning structure. One end of the connecting rod is rotatably connected to a sliding element, and the other end is rotatably connected to a slider on the corresponding tool unit. The trigger block is fixedly connected to a circular end plate. The contact element is disposed on the tool unit and has three protrusions. The three protrusions are arranged in a circumferential array along the axis of rotation between the tool unit and the slider. During the process of the slider sliding away from the center of the circular end plate, the contact element abuts against the trigger block through the protrusions to make the tool unit rotate more than 60°. The positioning structure is used to drive the rotating tool unit to continue rotating to 120°.

[0008] Furthermore, the positioning structure includes a guide wheel, a pressure wheel, and an elastic element. The guide wheel is fixedly connected to the tool unit, and the periphery of the guide wheel has three V-shaped guide grooves that correspond one-to-one with the three cutting dies of the tool unit. The pressure wheel is slidably connected to the slider through a slide rod, and the elastic force of the elastic element drives the pressure wheel to abut against the periphery of the guide wheel.

[0009] Furthermore, the feature is that a bracket is fixedly connected to the slider, the slide rod is slidably connected to the bracket, and the elastic element is a compression spring sleeved on the slide rod, with one end of the compression spring away from the slider abutting against the bracket and the other end abutting against the end of the slide rod.

[0010] Furthermore, a limiting ring is coaxially fixedly connected to the round end plate, and multiple limiting grooves are opened on the circumference of the limiting ring to engage with each guide wheel.

[0011] Furthermore, the protrusion is a roller rotatably connected to the contact element.

[0012] Furthermore, the first driving component includes an electric push rod, the base of which is fixedly mounted on the frame, and the push rod is fixedly connected to the sliding component.

[0013] Furthermore, the gap between the anvil roller and the circular cutter roller is adjustable.

[0014] Furthermore, each tool unit also includes a tool holder rod, with three die holders detachably connected to the tool holder rod.

[0015] Compared with the prior art, the fully automatic adhesive die-cutting machine provided by the present invention has a circular die-cutting mechanism in which the circular die-cutting roller is formed by multiple cutter units spliced ​​together in a ring, so that the circular die-cutting roller can store three sets of die-cutting molds. Through the die-changing component, the cutter units of the roller can be dispersed and rotated synchronously to switch the die facing outward, thereby realizing a rapid die-changing operation of the circular die-cutting roller. A single die-changing only takes 3-4 minutes, which greatly shortens the die-changing time and significantly improves the effective operating rate of the equipment, adapting to the high-frequency production change requirements. Attached Figure Description

[0016] To provide a clearer description of the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the embodiments will be briefly introduced below.

[0017] Figure 1 A schematic diagram of the overall structure provided for the embodiment; Figure 2 A schematic diagram of the circular die-cutting mechanism provided in the embodiment; Figure 3 A side view of the structure of the circular die-cutting mechanism provided in the embodiment; Figure 4 A schematic diagram of the structure of the circular cutter roller provided in the embodiment; Figure 5 Schematic diagram of the tooling unit and mold changing assembly provided in the embodiment Figure I ; Figure 6 Rear view of the tooling unit and mold changing assembly provided in the embodiment; Figure 7 Schematic diagram of the tooling unit and mold changing assembly provided in the embodiment Figure II ; Figure 8 This is a front view of the tooling unit and mold changing assembly provided in the embodiment; Figure 9 This is a schematic diagram of the connection structure between the slider and the slide block provided in the embodiment; Figure 10 A schematic diagram of the structural cutting tool unit provided for an embodiment; Figure 11 This is a rear view of the tool unit when switching the die, as provided in the embodiment. Figure 12 This is a front view of the tool unit when switching the die, as provided in the embodiment. Figure 13 This is a schematic diagram of the structure of the circular cutter roller when switching the cutting die, as provided in the embodiment.

[0018] Explanation of reference numerals in the attached figures: 1. Circular die-cutting mechanism; 11. Circular die roller; 111. Circular end plate; 112. Slider; 113. Roller; 114. Cutting unit; 115. Cutting post rod; 116. Die; 117. First driving component; 118. Sliding component; 119. Connecting rod; 120. Contact component; 121. Roller; 122. Trigger block; 123. Guide wheel; 124. Pressure roller; 125. Slide rod; 126. Bracket; 127. Elastic component; 128. Limiting ring; 129. Limiting groove; 130. Central shaft; 12. Anvil roller; 13. Side plate; 14. Slide seat; 15. Second driving component; 2. Feeding roller; 3. Waste discharge roller; 4. Receiving roller; 5. Frame. Detailed Implementation

[0019] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0020] Please see Figure 1-13 This invention provides a fully automatic adhesive die-cutting machine, comprising a feeding mechanism, a rotary die-cutting mechanism 1, a waste removal mechanism, and a receiving mechanism mounted on a frame 5. The adhesive substrate roll is mounted on the feeding roller 2 of the feeding mechanism. The feeding mechanism is responsible for automatically unwinding the adhesive substrate and has a built-in tension adjustment function to maintain the flat conveying of the adhesive substrate. After feeding, the adhesive substrate is guided by guide rollers into the rotary die-cutting mechanism 1, where it is die-cut using a rotary die-cutting process. The waste release layer after die-cutting is peeled off from the substrate layer and wound up by the waste removal roller 3 of the waste removal mechanism. The substrate layer, the adhesive layer, and the release layer product retained during die-cutting are neatly wound onto the receiving roller 4 of the receiving mechanism.

[0021] The circular die-cutting mechanism 1 includes a side plate 13, a circular die roller 11, an anvil roller 12, and a die-changing assembly. The circular die roller 11 and the anvil roller 12 are arranged in parallel and can rotate on the side plate 13. The circular die roller 11 can store three sets of die 116. The die-changing assembly enables rapid die-changing operations on the circular die roller 11. The gap between the anvil roller 12 and the circular die roller 11 is adjustable. The anvil roller 12 is rotatably connected to the slide block 14, and the slide block 14 is slidably connected to the side plate 13. A second driving member 15 for driving the slide block 14 to slide is provided on the side plate 13 or the frame 5. The second driving member 15 is an electric push rod or a cylinder.

[0022] The circular cutter roller 11 specifically includes two coaxial circular end plates 111 and a roller 113 located between the two circular end plates 111. The two circular end plates 111 are coaxially fixedly connected by a central shaft 130. The central shaft 130 is rotatably connected to the side plate 13 and is driven to rotate by a servo motor, thereby driving the circular cutter roller 11 to rotate. The roller 113 is formed by splicing multiple cutter units 114 around the circular end plates 111 in a circumferential manner. The specific number of cutter units 114 is preferably 14-20, which is set according to the specific diameter requirements of the circular cutter roller 11. Each tool unit 114 has a slider 112 rotatably connected to both ends. Two sliders 112 of the same tool unit 114 are slidably connected to two circular end plates 111 along a radial direction. Each tool unit 114 is radially connected to the two circular end plates 111 via sliders 112. Each tool unit 114 has three different sized die-cutting molds 116 arranged in a circular array. The three die-cutting molds 116 are integrally formed or have a separate structure. Preferably, each tool unit 114 also includes a tool holder rod 115, and the three die-cutting molds 116 are detachably connected to the tool holder rod 115, thus facilitating the replacement of individual die-cutting molds 116 of the tool unit 114. Figure 10 As shown.

[0023] The mold changing assembly is used to drive each cutter unit 114 to slide and separate radially on the round end plate 111 for a certain distance. The cutter units 114 of the circular cutter roller 11 are dispersed and do not interfere with each other. During the subsequent sliding and separation process, each cutter unit 114 rotates, thereby switching the die 116 facing the outside of the roller 113. Then, it drives each cutter unit 114 to slide and close synchronously towards the center of the round end plate 111, and splices them back into the roller 113. This realizes the rapid mold changing operation of the circular cutter roller 11. A single mold changing only takes 3-4 minutes. Compared with the traditional mold changing method, the mold changing time is greatly shortened, which significantly improves the effective operating rate of the equipment and adapts to the high-frequency production change requirements.

[0024] The mold-changing assembly specifically includes a slider 118, a first drive 117, and multiple mold-changing units. The slider 118 is axially slidably mounted on the central shaft 130 along the circular end plate 111, and includes a turntable and a sleeve rotatably connected to each other. The first drive 117 is used to drive the slider 118 to move along the central shaft 130. For example, the first drive 117 is an electric push rod, the seat of which is fixedly mounted on the frame 5 or the side plate 13, and its push rod is fixedly connected to the sleeve of the slider 118. Each mold-changing unit is set on the slider 118 and corresponds one-to-one with each tool unit 114. For any single mold-changing unit, it includes a connecting rod 119, a contact 120, a trigger block 122, and a positioning structure. One end of the connecting rod 119 is rotatably connected to the turntable of the slider 118, and the other end is rotatably connected to the slider 112 on the corresponding tool unit 114. Figure 9 As shown. The trigger block 122 is fixedly connected to the circular end plate 111. The contact element 120 is disposed on the tool unit 114 and has three protrusions. The three protrusions are arranged in a circumferential array along the axis of rotation between the tool unit 114 and the slider 112. The trigger block 122 is located on the path of one of the protrusions of the contact element 120 along the movement of the slider 112. During the process of the tool unit 114 sliding away from the center of the circular end plate 111 through the slider 112, the contact element 120 abuts against the trigger block 122 through one of its protrusions, causing the tool unit 114 to rotate more than 60°, preferably in the range of 65°-75°. Subsequently, the positioning structure drives the rotating tool unit 114 to continue rotating to 120°, thereby causing the circular cutter roller 11 to switch the die 116. During the contact 120 protrusion and the trigger block 122 abutting and engaging, in order to reduce the frictional resistance between the protrusion and the trigger block 122, the protrusion is designed as a roller 121 rotatably connected to the contact 120, and the roller 121 and the trigger block 122 engage in rolling contact.

[0025] The positioning structure automatically positions the cutter unit 114 towards the outside of the roller 113 during rotation using elastic action. Specifically, it includes a guide wheel 123, a pressure roller 124, and an elastic element 127. The guide wheel 123 is fixedly connected to the cutter unit 114 and has three V-shaped guide grooves arranged in a circular array on its circumference. Each of the three V-shaped guide grooves corresponds one-to-one with one of the three cutter dies 116 of the cutter unit 114, with rounded corners between adjacent V-shaped guide grooves. The pressure roller 124 is slidably connected to the slider 112 via a slide rod 125. Specifically, the pressure roller 124 is rotatably connected to a connecting block, and the slide rod 125 is fixedly connected to the connecting block. A bracket 126 is fixedly connected to the slider 112, and the slide rod 125 is slidably connected in a through hole in the bracket 126. The sliding direction of the slide rod 125 is consistent with the sliding direction of the slider 112, and the axial direction of the pressure roller 124 is consistent with the axial direction of the central axis 130. The elastic force of the elastic element 127 drives the pressure roller 124 to abut against the periphery of the guide roller 123. The elastic element 127 is specifically a compression spring, which is sleeved on the slide rod 125. One end of the compression spring away from the corresponding slider 112 abuts against the bracket 126, and the other end abuts against the connecting block. A limit ring 128 is also fixedly installed on the round end plate 111. The limit ring 128 is coaxially arranged with the round end plate 111. Multiple limit grooves 129 are opened on the periphery of the limit ring 128. Each limit groove 129 engages with the guide roller 123 on each tool unit 114 in a one-to-one manner. Together with the first driving element 117, the sliding element 118 and the connecting rod 119, the slider 112 is locked to slide on the round end plate 111, thereby limiting the rotation of the tool unit 114 and thus ensuring that each tool unit 114 remains stable when forming the roller 113.

[0026] When performing a mold-changing operation on the circular cutter roller 11, the second drive member 15 first drives the anvil roller 12 to move and increase the distance between it and the circular cutter roller 11. Then, the first drive member 117 drives the sliding member 118 to move towards the corresponding circular end plate 111. The sliding member 118 drives the sliders 112, the cutter units 114, the contact members 120, and the guide wheels 123 to slide and separate radially through the connecting rods 119. The cutter units 114 are dispersed so that adjacent cutter units 114 will not interfere with each other during subsequent rotation. Then, one of the rollers of the contact members 120 on each of the slid-separated cutter units 114... The inner end of the trigger block 121 (facing the center of the round end plate 111) abuts against the inner end of the trigger block 122, causing the tool unit 114 to rotate more than 60°. During the rotation of the tool unit 114 to 60°, the guide wheel 123 presses against the pressure wheel 124, causing the compression spring to compress and store energy. After the tool unit 114 rotates more than 60°, the pressure wheel 124 reaches the next V-shaped guide groove, and the elastic force of the compression spring causes the pressure wheel 124 to press against the guide wheel 123 towards the center of the round end plate 111, so that the guide wheel 123 and the tool unit 114 continue to rotate in the original direction until the next roller 121 abuts against the side of the trigger block 122. Figures 11-13 As shown; then the first driving member 117 drives the sliding member 118 to move in the opposite direction and reset. The sliding member 118 drives the sliders 112, the cutting tool unit 114, the contact member 120 and the guide wheel 123 to slide and close towards the center of the round end plate 111 through the connecting rods 119. After the roller 121 of the contact member 120 disengages from the obstruction on the side of the trigger block 122, the elastic force of the compression spring is further released, causing the pressure roller 124 to press the guide wheel 123 until the pressure roller 124 reaches the center of the current V-shaped guide groove (the closest point to the axis of the guide wheel 123). At this point, the cutting tool unit 114 has rotated 120°, and the die 116 has completed the switching, as shown. Figures 4-7 As shown. If you need to switch die 116 again, simply repeat the above process.

[0027] The foregoing description of certain exemplary embodiments of the present invention should not be construed as limiting the scope of protection of the claims. Those skilled in the art will recognize that the described embodiments can be modified in other ways without departing from the spirit and scope of the invention.

Claims

1. A fully automatic adhesive-backed die-cutting machine, comprising a feeding mechanism, a circular die-cutting mechanism, a waste removal mechanism, and a receiving mechanism mounted on a frame, characterized in that: The circular die-cutting mechanism includes a circular die roller, an anvil roller, and a die-changing assembly. The circular die roller and the anvil roller are arranged in parallel and can rotate. The circular cutter roller includes two coaxial circular end plates and a roller located between the two circular end plates. The roller is formed by multiple cutter units spliced ​​together in a ring around the circular end plates. Each cutter unit is slidably connected to the circular end plates by a slider rotatably connected to it. Each cutter unit has three different sizes of cutter dies distributed in a circular array. The mold changing assembly is used to drive each of the cutting tool units to slide radially apart on the round end plate and rotate to switch the cutting mold facing the outside of the roller. The mold changing assembly includes a slider that slides axially on a round end plate, a first driving member that drives the slider to move, and multiple mold changing units on the slider that correspond one-to-one with each tool unit. Each mold-changing unit includes a connecting rod, a contact element, a trigger block, and a positioning structure. One end of the connecting rod is rotatably connected to a sliding element, and the other end is rotatably connected to a slider on the corresponding tool unit. The trigger block is fixedly connected to a circular end plate. The contact element is disposed on the tool unit and has three protrusions. The three protrusions are arranged in a circumferential array along the axis of rotation between the tool unit and the slider. During the process of the slider sliding away from the center of the circular end plate, the contact element abuts against the trigger block through the protrusions to make the tool unit rotate more than 60°. The positioning structure is used to drive the rotating tool unit to continue rotating to 120°. The positioning structure includes a guide wheel, a pressure wheel, and an elastic element. The guide wheel is fixedly connected to the tool unit. The periphery of the guide wheel has three V-shaped guide grooves that correspond one-to-one with the three cutting dies of the tool unit. The pressure wheel is slidably connected to the slider through a slide rod. The elastic force of the elastic element drives the pressure wheel to abut against the periphery of the guide wheel. A bracket is fixedly connected to the slider, and a sliding rod is slidably connected to the bracket. The elastic element is a compression spring sleeved on the sliding rod. The end of the compression spring away from the slider abuts against the bracket, and the other end abuts against the end of the sliding rod.

2. The fully automatic die-cutting machine with adhesive according to claim 1, characterized in that A limiting ring is coaxially fixedly connected to the round end plate, and multiple limiting grooves are opened on the circumference of the limiting ring to engage with each guide wheel.

3. The fully automatic die-cutting machine with adhesive according to claim 1, characterized in that, The protrusion is a roller rotatably connected to the contact element.

4. The fully automatic die-cutting machine with adhesive according to claim 1, characterized in that, The first driving component includes an electric push rod, the base of which is fixedly mounted on the frame, and the push rod is fixedly connected to the sliding component.

5. The fully automatic die-cutting machine with adhesive according to claim 1, characterized in that, The gap between the anvil roller and the circular cutter roller is adjustable.

6. The fully automatic die-cutting machine with adhesive according to claim 1, characterized in that, Each tool unit also includes a tool holder rod, with three die holders detachably connected to the tool holder rod.

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