A die-cutting machine for paper cup processing

Abstract

This utility model relates to a die-cutting machine for paper cup processing, including a base and an upper die-cutting unit. A first die-cutting hole is vertically formed on the base. The upper die-cutting unit includes a first pressing plate, a second die-cutting hole, an upper die-cutting head, and a first spring. The first pressing plate is vertically movable and positioned directly above the first die-cutting hole. The second die-cutting hole penetrates through the first pressing plate, and its vertical projection coincides with the first die-cutting hole. The upper die-cutting head is vertically movable and positioned above the second die-cutting hole. The first spring is vertically positioned on one side of the upper die-cutting head, and its bottom is fixedly connected to the upper part of the first pressing plate. This utility model avoids the paperboard from warping during pressing, ensuring a high yield of die-cut paperboard.

Description

Technical Field

[0001] This utility model relates to the field of paper cup processing technology, specifically to a die-cutting machine for paper cup processing. Background Technology

[0002] Die-cutting machines are common processing equipment in the production of paper products (such as paper cups). Existing die-cutting machines include an upper die-cutting component and a lower die-cutting component. During use, the upper and lower die-cutting components need to be regularly maintained. The upper and lower die-cutting components in existing die-cutting machines are not easy to disassemble, which increases the difficulty of operation during maintenance.

[0003] Chinese utility model patent (authorization announcement number CN222495604U) discloses a die-cutting machine for paper cup processing, including a processing table, a mounting frame fixedly installed in the middle of the processing table, a cylinder fixedly installed in the middle of the top surface of the mounting frame, a connector fixedly installed at the telescopic end of the cylinder, and a mounting groove opened on the processing table directly below the mounting frame; the die-cutting machine also includes a die-cutting assembly, which includes a lower template and an upper template, the bottom two sides of the lower template are fixed to the mounting groove by screws, four sets of sliding rods are fixedly installed on the top of the lower template, the upper template slides with the sliding rods, a limit plate is fixedly installed on the top of the sliding rods, and a connecting seat is fixedly installed at the center of the top surface of the upper template, the connecting seat is fixed to the connector by screws.

[0004] While the existing die-cutting machines described above improve the speed of changing the upper and lower die-cutting components, they still rely on screws for fixing, leaving room for improvement in installation efficiency. Furthermore, during die-cutting, the lack of a structure to fully press down the cardboard means that the cardboard may warp when the upper and lower die-cutting components come into contact. This can lead to paper scraps slipping into the lower die-cutting component and uneven die-cutting, resulting in burrs or numerous connected strips of paper on the edges of the die-cut paper cup models. Additionally, if the cardboard is unloaded in rolls, warping and deformation can occur with each die-cut, leading to wrinkles and reduced cardboard utilization. Utility Model Content

[0005] To address the aforementioned problems, a die-cutting machine for paper cup processing is provided. This machine features a first pressing plate with a second die-cutting hole aligned vertically with the first die-cutting hole. During die-cutting, the upper die-cutting head and the first pressing plate descend synchronously. Once the first pressing plate contacts the cardboard, it stops descending, while the upper die-cutting head continues to descend, gradually compressing a first spring. This compressed spring provides pressure to the first pressing plate. The upper die-cutting head passes sequentially through the second and first die-cutting holes along the vertical direction.

[0006] To address the existing technical problems, this utility model application provides a die-cutting machine for paper cup processing, including a base and an upper die-cutting unit. A first die-cutting hole is vertically opened on the base, and a cardboard for die-cutting is provided between the first die-cutting hole and the upper die-cutting unit.

[0007] The upper die-cutting unit includes a first pressing plate, a second die-cutting hole, an upper die-cutting head, and a first spring;

[0008] The first pressing plate moves vertically and is positioned directly above the first die-cutting hole;

[0009] The second die-cutting hole is formed through the first pressing plate, and the projection of the second die-cutting hole in the vertical direction coincides with the first die-cutting hole;

[0010] The upper die-cutting head moves vertically and is positioned above the second die-cutting hole;

[0011] The first spring is vertically mounted on one side of the upper die-cutting head. The bottom of the first spring is fixedly connected to the upper part of the first pressing plate. Before the first pressing plate contacts the cardboard, the upper die-cutting head and the first pressing plate move synchronously and the first spring is not compressed. After the first pressing plate contacts the cardboard, the upper die-cutting head passes through the second die-cutting hole and the first die-cutting hole from top to bottom in sequence, and the first spring is compressed.

[0012] Preferably, the upper die-cutting unit further includes a second pressing plate, a linear driver, and a mounting base;

[0013] The second pressing plate is vertically moved above the first pressing plate. Before the first pressing plate presses the cardboard, the second pressing plate moves synchronously with the first pressing plate. The upper part of the first spring is fixedly mounted on the second pressing plate.

[0014] The linear actuator is vertically positioned above the second pressing plate and is used to drive the second pressing plate to move;

[0015] The mounting base is set on the second pressing plate, and the upper die-cutting head is fixedly set at the bottom of the mounting base.

[0016] Preferably, the upper die-cutting unit further includes a first extension rod and a limiting ring;

[0017] The first extension rod is vertically fixed on the upper part of the first pressing plate, and the first extension rod vertically passes through the second pressing plate and slides in cooperation with the second pressing plate.

[0018] The limiting ring is fixedly installed on the upper part of the first extension rod.

[0019] Preferably, the upper die-cutting unit further includes a snap-fit ​​block, a slide, and a snap-fit ​​groove;

[0020] The snap-fit ​​block is vertically moved and positioned above the second pressing plate, penetrating the second pressing plate;

[0021] The slide groove is horizontally opened on the side of the second pressing plate, and the mounting base slides in conjunction with the slide groove;

[0022] The snap-fit ​​groove is vertically formed on the upper part of the mounting base, and the snap-fit ​​block engages with the snap-fit ​​groove.

[0023] Preferably, a second compression rod, a second spring, an unlocking bar, and a connecting frame are also provided above the second pressing plate;

[0024] The connecting bracket is fixedly installed on the upper part of the snap-fit ​​block;

[0025] The second compression rod is vertically fixed on the upper part of the second pressing plate and passes through the connecting frame. The second compression rod and the connecting frame slide in the vertical direction.

[0026] The second spring is vertically installed on the upper part of the connecting frame, and the two ends of the second spring are fixedly connected to the upper part of the second compression rod and the upper part of the connecting frame, respectively.

[0027] The unlocking bar is horizontally movable below the connecting frame, and a protrusion is fixedly installed on the upper part of the unlocking bar to guide the lifting and lowering of the connecting frame.

[0028] Preferably, a lead screw is horizontally rotatably mounted on the side wall of the unlocking bar, the lead screw horizontally passes through the second pressing plate and is threaded into the second pressing plate, and a rotating handle is provided at the end of the lead screw.

[0029] Preferably, a guide groove is provided on the upper part of the first pressing plate, the guide groove is slidably engaged with the lower part of the mounting base, and the second die-cutting hole is provided at the bottom of the guide groove.

[0030] Preferably, a ventilation groove is provided on one side of the guide groove.

[0031] Preferably, a conveyor wheel, a support wheel, and a motor are provided on the side of the first die-cutting hole;

[0032] The support wheel is rotatably mounted on the base and provides support for the cardboard. The support wheel rolls with the lower part of the cardboard.

[0033] The conveyor wheel is mounted above the support wheel and rolls in contact with the upper part of the cardboard.

[0034] The motor is located at the end of the conveyor wheel and is used to drive the conveyor wheel to rotate.

[0035] Preferably, an inclined plate is provided below the first die-cutting hole.

[0036] The advantages of this utility model application compared to the prior art are:

[0037] 1. This utility model application involves setting a first pressing plate and opening a second die-cutting hole on the first pressing plate. The second die-cutting hole and the first die-cutting hole are aligned in the vertical direction. During die-cutting, the upper die-cutting head and the first pressing plate descend synchronously. When the first pressing plate contacts the cardboard, the first pressing plate stops descending, and the upper die-cutting head continues to descend, causing the first spring to gradually compress. The compressed first spring provides pressure to the first pressing plate. The upper die-cutting head passes through the second die-cutting hole and the first die-cutting hole in sequence in the vertical direction. During the die-cutting process of the upper die-cutting head, since the first pressing plate always provides pressure to the cardboard, the cardboard is prevented from warping during pressing, thus ensuring the yield of the cardboard after die-cutting.

[0038] 2. By setting up snap-fit ​​blocks and snap-fit ​​slots, the mounting base can be quickly disassembled and assembled, avoiding the use of screws for fixing and improving the fixing speed of the mounting base.

[0039] 3. A guide groove is provided on the first pressing plate to guide the mounting base, so that the upper die cutting head is not affected by the shaking of the mounting base, ensuring the accurate fit between the upper die cutting head and the first die cutting hole. At the same time, a venting groove is also provided to ensure that the upper die cutting head can slide smoothly in the first die cutting hole. Attached Figure Description

[0040] Figure 1 This is a three-dimensional schematic diagram of a die-cutting machine for paper cup processing according to this utility model application.

[0041] Figure 2 This utility model application relates to a die-cutting machine for paper cup processing. Figure 1 A magnified view of a portion of point A in the middle.

[0042] Figure 3 This utility model application provides a cross-sectional three-dimensional schematic diagram of a die-cutting machine for paper cup processing. Figure 1 .

[0043] Figure 4 This utility model application relates to a die-cutting machine for paper cup processing. Figure 3 A magnified view of a portion of point B in the middle.

[0044] Figure 5 This utility model application provides a cross-sectional three-dimensional schematic diagram of a die-cutting machine for paper cup processing. Figure 2 .

[0045] Figure 6 This is a three-dimensional schematic diagram of a die-cutting machine for paper cup processing after the base has been removed.

[0046] Figure 7 This is a three-dimensional schematic diagram of a die-cutting machine for paper cup processing after removing the linear drive and base.

[0047] The numbers on the map are:

[0048] 1. Base; 11. First die-cutting hole; 12. Conveyor wheel; 13. Support wheel; 14. Motor; 15. Inclined plate; 2. Upper die-cutting unit; 21. First pressing plate; 211. Second die-cutting hole; 212. First extension rod; 213. Limiting ring; 214. Guide groove; 215. Ventilation groove; 22. Upper die-cutting head; 23. First spring; 24. Second pressing plate; 241. Snap-fit ​​block; 242. Slide groove; 243. Snap-fit ​​groove; 244. Second extension rod; 245. Second spring; 246. Unlocking bar; 2461. Protrusion block; 247. Connecting frame; 248. Lead screw; 2481. Limiting block; 249. Rotating handle; 25. Linear driver; 26. Mounting base; 3. Cardboard. Detailed Implementation

[0049] To further understand the features, technical means, and specific objectives and functions achieved by this utility model application, the following detailed description of this utility model application is provided in conjunction with the accompanying drawings and specific embodiments.

[0050] Reference Figures 1-7 A die-cutting machine for paper cup processing includes a base 1 and an upper die-cutting unit 2. A first die-cutting hole 11 is vertically opened on the base 1, and a cardboard 3 for die-cutting is provided between the first die-cutting hole 11 and the upper die-cutting unit 2.

[0051] The upper die-cutting unit 2 includes a first pressing plate 21, a second die-cutting hole 211, an upper die-cutting head 22, and a first spring 23;

[0052] The first pressing plate 21 is moved vertically and positioned directly above the first die-cutting hole 11;

[0053] The second die-cutting hole 211 is formed through the first pressing plate 21, and the projection of the second die-cutting hole 211 in the vertical direction coincides with the first die-cutting hole 11.

[0054] The upper die-cutting head 22 is vertically moved and positioned above the second die-cutting hole 211;

[0055] The first spring 23 is vertically disposed on one side of the upper die-cutting head 22. The bottom of the first spring 23 is fixedly connected to the upper part of the first pressing plate 21. Before the first pressing plate 21 contacts the cardboard 3, the upper die-cutting head 22 and the first pressing plate 21 move synchronously and the first spring 23 is not compressed. After the first pressing plate 21 contacts the cardboard 3, the upper die-cutting head 22 passes through the second die-cutting hole 211 and the first die-cutting hole 11 from top to bottom, and the first spring 23 is compressed.

[0056] In existing die-cutting machines, rolls of cardboard 3 are used as raw materials to increase die-cutting output. During die-cutting, the rolls of cardboard 3 are pulled out and fed into the die-cutting machine. The cardboard 3 is gradually released during the die-cutting process, thereby improving efficiency. However, existing die-cutting methods typically align the upper die-cutting head 22 with the first die-cutting hole 11, causing the upper die-cutting head 22 to repeatedly rise and fall. During this process, the upper die-cutting head 22 continuously slides into or out of the first die-cutting hole 11. However, when the upper die-cutting head 22 slides into the first die-cutting hole 11, the edges of the cardboard 3 being die-cut may curl up. Since adjacent cardboard sections are usually close together to improve utilization, the curling of the edges of the previous cardboard section during die-cutting causes wrinkles, which can lead to wrinkles in subsequent die-cuts, resulting in an increased defect rate.

[0057] To avoid the aforementioned situation, the existing die-cutting machine was optimized to prevent the cardboard 3 from warping during the die-cutting process. This avoids wrinkles caused by warping and ensures a high yield rate after die-cutting. The specific structure and working process of this utility model application are as follows:

[0058] First, the rolled cardboard 3 is guided between the upper die cutter head 22 and the first die-cutting hole 11. At this time, the first pressing plate 21 is not in contact with the upper part of the cardboard 3, and the cardboard 3 can smoothly pass under the first pressing plate 21 and move along the length direction of the base 1. When the cardboard 3 moves to the designated position, it stops moving. The first pressing plate 21 and the upper die cutter head 22 descend synchronously. First, the first pressing plate 21 presses the upper part of the cardboard 3. The first pressing plate 21 stops descending, and the upper die cutter head 22 continues to descend. The first spring 23 is gradually compressed, and the first spring 23 provides pressure to the first pressing plate 21, so that the first pressing plate 21 presses the cardboard 3 tightly onto the base 1. At this time, the first pressing plate 21... The second die-cutting hole 211 is aligned with the first die-cutting hole 11. The upper die-cutting head 22 continues to descend and passes through the second die-cutting hole 211 and the first die-cutting hole 11 in the vertical direction. At this time, the upper die-cutting head 22 completes the die-cutting of the cardboard 3. The upper die-cutting head 22 rises, and the die-cut cardboard 3 is discharged from the lower part of the base 1. The first spring 23 gradually returns to its original state as the upper die-cutting head 22 rises. When the first spring 23 has fully returned to its original state, the first pressing plate 21 rises synchronously with the upper die-cutting head 22. The first pressing plate 21 is released from pressing the cardboard 3. The cardboard 3 moves a specified distance along the length direction of the base 1 according to the preset setting and then stops moving. Then the upper die-cutting head 22 and the first pressing plate 21 descend again, and the cycle repeats.

[0059] By setting a first pressing plate 21 and opening a second die-cutting hole 211 on the first pressing plate 21, the second die-cutting hole 211 and the first die-cutting hole 11 are aligned in the vertical direction. During die-cutting, the upper die-cutting head 22 and the first pressing plate 21 descend synchronously. When the first pressing plate 21 contacts the cardboard 3, the first pressing plate 21 stops descending, and the upper die-cutting head 22 continues to descend, causing the first spring 23 to gradually compress. The compressed first spring 23 provides pressure to the first pressing plate 21. The upper die-cutting head 22 passes through the second die-cutting hole 211 and the first die-cutting hole 11 in sequence in the vertical direction. During the die-cutting process of the upper die-cutting head 22, since the first pressing plate 21 always provides pressure to the cardboard 3, the cardboard 3 is prevented from warping during pressure, thus ensuring the yield of the cardboard 3 after die-cutting.

[0060] Reference Figures 5-7 The upper die-cutting unit 2 also includes a second pressing plate 24, a linear driver 25, and a mounting base 26;

[0061] The second pressing plate 24 is vertically moved above the first pressing plate 21. Before the first pressing plate 21 presses the cardboard 3, the second pressing plate 24 and the first pressing plate 21 move synchronously. The upper part of the first spring 23 is fixedly mounted on the second pressing plate 24.

[0062] The linear actuator 25 is vertically positioned above the second pressing plate 24 and is used to drive the second pressing plate 24 to move.

[0063] Mounting base 26 is mounted on the second pressing plate 24, and upper die-cutting head 22 is fixedly mounted on the bottom of mounting base 26.

[0064] When maintenance is required on the upper die-cutting head 22, the mounting base 26 on the second pressing plate 24 can be removed from the second pressing plate 24. After maintenance, the mounting base 26 can be reinstalled on the second pressing plate 24. During the die-cutting process of the cardboard 3, the second pressing plate 24 is driven by the linear actuator 25. When the first pressing plate 21 is not in contact with the cardboard 3, the first pressing plate 21 and the second pressing plate 24 descend synchronously. When the first pressing plate 21 contacts the cardboard 3, the first pressing plate 21 presses the cardboard 3. The second pressing plate 24 drives the upper die-cutting head 22 to continue to descend through the mounting base 26. The descending die-cutting head passes through the second die-cutting hole 211 and the first die-cutting hole 11 in sequence to complete the die-cutting.

[0065] Reference Figure 6 and Figure 7 The upper die-cutting unit 2 also includes a first extension rod 212 and a limiting ring 213;

[0066] The first extension rod 212 is vertically fixed on the upper part of the first pressing plate 21, and the first extension rod 212 passes vertically through the second pressing plate 24 and slides in cooperation with the second pressing plate 24.

[0067] The limiting ring 213 is fixedly installed on the upper part of the first extension rod 212.

[0068] Before the first pressing plate 21 contacts the cardboard 3, the first pressing plate 21 and the second pressing plate 24 descend synchronously. At this time, the lower part of the limiting ring 213 contacts the upper part of the second pressing plate 24, and the first spring 23 is in a non-stretched state. If the first extension rod 212 and the limiting ring 213 are not provided, the first pressing plate 21 itself has weight during the synchronous descent of the first pressing plate 21 and the second pressing plate 24, and the first pressing plate 21 exerts a pulling force on the first spring 23. When the first pressing plate 21 does not exert pressure on the cardboard 3, the first spring 23 is in a stretched state for a long time, which can easily lead to a reduction in the service life of the first spring 23. However, after the limiting ring 213 is provided, the above situation can be avoided, and the service life of the first spring 23 can be extended.

[0069] Reference Figures 5-7 The upper die-cutting unit 2 also includes a snap-fit ​​block 241, a slide groove 242, and a snap-fit ​​slot 243;

[0070] The snap-fit ​​block 241 is vertically moved and positioned on the upper part of the second pressing plate 24 and passes through the second pressing plate 24;

[0071] The slide groove 242 is horizontally opened on the side of the second pressing plate 24, and the mounting base 26 slides in cooperation with the slide groove 242;

[0072] The snap-fit ​​groove 243 is vertically formed on the upper part of the mounting base 26, and the snap-fit ​​block 241 engages with the snap-fit ​​groove 243.

[0073] When maintenance is required on the upper die-cutting head 22, the locking block 241 is raised and disengaged from the locking groove 243. Then, the mounting base 26 is pulled out horizontally from the slide 242. After the maintenance work on the upper die-cutting head 22 is completed, the mounting base 26 is reinserted into the slide 242. When the mounting base 26 is fully inserted into the slide 242, the locking block 241 engages the locking groove 243. Compared with traditional screw fixing, the fixing speed of the locking block 241 and the locking groove 243 is faster.

[0074] Reference Figure 6 and Figure 7 Above the second pressing plate 24, there is also a second compression rod, a second spring 245, an unlocking bar 246 and a connecting bracket 247;

[0075] The connecting bracket 247 is fixedly mounted on the upper part of the snap-fit ​​block 241;

[0076] The second compression rod is vertically fixed on the upper part of the second pressing plate 24 and passes through the connecting frame 247. The second compression rod and the connecting frame 247 slide in the vertical direction.

[0077] The second spring 245 is vertically arranged on the upper part of the connecting frame 247, and the two ends of the second spring 245 are fixedly connected to the upper part of the second compression rod and the upper part of the connecting frame 247, respectively.

[0078] The unlocking bar 246 is horizontally movable below the connecting frame 247, and a protrusion 2461 for guiding the connecting frame 247 to rise and fall is fixedly provided on the upper part of the unlocking bar 246.

[0079] When the mounting base 26 needs to be removed, push the unlocking bar 246, causing it to move the protrusion 2461 towards the connecting bracket 247. Guided by the protrusion 2461, the connecting bracket 247 gradually rises. At this time, the second spring 245 gradually compresses. When the locking block 241 completely slides out of the locking groove 243, the mounting base 26 can be removed. After maintenance, when the mounting base 26 is inserted into the slide groove 242, the unlocking bar 246 moves in the opposite direction. The compressed second spring 245 presses down on the connecting bracket 247, causing the locking block 241 to engage with the locking groove 243.

[0080] Reference Figure 4 A lead screw 248 is horizontally rotatably mounted on the side wall of the unlocking bar 246. The lead screw 248 passes horizontally through the second pressing plate 24 and is threadedly engaged with the second pressing plate 24. A rotating handle 249 is provided at the end of the lead screw 248.

[0081] Rotating the handle 249 drives the lead screw 248 to rotate, causing the unlocking bar 246 to move horizontally. When the handle 249 stops rotating, the unlocking bar 246 will not move on its own, making disassembly and assembly more convenient. Two limit blocks 2481 are also fixedly installed on the lead screw 248. These limit blocks 2481 restrict the horizontal movement of the lead screw 248. When the two limit blocks 2481 contact the second pressing plate 24, it indicates that the mounting base 26 is unlocked and locked, respectively.

[0082] Reference Figure 6 A guide groove 214 is provided on the upper part of the first pressing plate 21. The guide groove 214 slides with the lower part of the mounting base 26. The second die-cutting hole 211 is provided at the bottom of the guide groove 214.

[0083] Since the mounting base 26 is prone to shaking after installation due to increased usage frequency, a guide groove 214 is provided above the second die-cutting hole 211 to ensure that the upper die cutter head 22 can slide stably into the second die-cutting hole 211 and the first die-cutting hole 11 after descent. The guide groove 214 guides the upper die cutter head 22, improving the accuracy of the upper die cutter head 22 when it mates with the first die-cutting hole 11.

[0084] Reference Figure 6 and Figure 7 A ventilation groove 215 is provided on one side of the guide groove 214.

[0085] By opening a ventilation groove 215 on one side of the guide groove 214, the upper die cutter head 22 will not be hindered by the air pressure in the guide groove 214 when it slides into the guide groove 214, thus ensuring that the upper die cutter head 22 can slide smoothly in the ventilation groove 215.

[0086] Reference Figure 2 A conveyor wheel 12, a support wheel 13, and a motor 14 are provided on the side of the first die-cutting hole 11.

[0087] The support wheel 13 is rotatably mounted on the base 1 and provides support for the cardboard 3. The support wheel 13 is in rolling engagement with the lower part of the cardboard 3.

[0088] The conveyor wheel 12 is rotatably mounted above the support wheel 13, and the conveyor wheel 12 rolls in contact with the upper part of the cardboard 3;

[0089] The motor 14 is located at the end of the conveyor wheel 12 and is used to drive the conveyor wheel 12 to rotate.

[0090] The combined action of the support wheel 13 and the conveyor wheel 12 allows the cardboard 3 to move smoothly on the base 1.

[0091] Reference Figure 3 An inclined plate 15 is provided below the first die-cutting hole 11.

[0092] After die-cutting, the cardboard 3 falls onto the inclined plate 15, which guides the die-cut cardboard 3 out.

[0093] This utility model provides a die-cutting machine for paper cup processing. During operation, the rolled cardboard 3 is first guided between the upper die cutter head 22 and the first die-cutting hole 11. At this time, the first pressing plate 21 is in a non-contact state with the upper part of the cardboard 3, and the cardboard 3 can smoothly pass under the first pressing plate 21 and move along the length direction of the base 1. When the cardboard 3 moves to the designated position, it stops moving. The first pressing plate 21 and the upper die cutter head 22 descend synchronously. First, the first pressing plate 21 presses the upper part of the cardboard 3. The first pressing plate 21 stops descending, and the upper die cutter head 22 continues to descend. The first spring 23 is gradually compressed, and the first spring 23 provides pressure to the first pressing plate 21, so that the first pressing plate 21 presses the cardboard 3 tightly onto the base 1. At this time, the second die-cutting hole 211 on the first pressing plate 21 is aligned with the first die-cutting hole 11. The upper die-cutting head 22 continues to descend and passes through the second die-cutting hole 211 and the first die-cutting hole 11 in the vertical direction. At this time, the upper die-cutting head 22 completes the die-cutting of the cardboard 3. The upper die-cutting head 22 rises and the die-cut cardboard 3 is discharged from the lower part of the base 1. The first spring 23 gradually returns to its original state as the upper die-cutting head 22 rises. When the first spring 23 is fully restored, the first pressing plate 21 rises synchronously with the upper die-cutting head 22. The first pressing plate 21 is released from pressing the cardboard 3. The cardboard 3 moves a specified distance along the length direction of the base 1 according to the preset setting and then stops moving. Then the upper die-cutting head 22 and the first pressing plate 21 descend again and repeat the cycle.

[0094] The above embodiments only illustrate one or more implementation methods of this utility model application, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of this utility model application, and these all fall within the protection scope of this utility model application. Therefore, the protection scope of this utility model application should be determined by the appended claims.

Claims

1. A die-cutting machine for paper cup processing, comprising a base (1) and an upper die-cutting unit (2), wherein a first die-cutting hole (11) is vertically provided on the base (1), and a cardboard (3) for die-cutting is provided between the first die-cutting hole (11) and the upper die-cutting unit (2). characterized in that The upper die-cutting unit (2) includes a first pressing plate (21), a second die-cutting hole (211), an upper die-cutting head (22), and a first spring (23); The first pressing plate (21) is moved vertically and positioned directly above the first die-cutting hole (11); The second die-cutting hole (211) is opened through the first pressing plate (21), and the projection of the second die-cutting hole (211) in the vertical direction coincides with the first die-cutting hole (11); The upper die-cutting head (22) is vertically moved and positioned above the second die-cutting hole (211); The first spring (23) is vertically set on one side of the upper die-cutting head (22). The bottom of the first spring (23) is fixedly connected to the upper part of the first pressing plate (21). Before the first pressing plate (21) contacts the cardboard (3), the upper die-cutting head (22) and the first pressing plate (21) move synchronously and the first spring (23) is not compressed. After the first pressing plate (21) contacts the cardboard (3), the upper die-cutting head (22) passes through the second die-cutting hole (211) and the first die-cutting hole (11) from top to bottom and the first spring (23) is compressed.

2. The die cutting machine for paper cup processing according to claim 1, characterized in that, The upper die-cutting unit (2) also includes a second pressing plate (24), a linear driver (25), and a mounting base (26); The second pressing plate (24) is vertically moved above the first pressing plate (21). Before the first pressing plate (21) presses the cardboard (3), the second pressing plate (24) and the first pressing plate (21) move synchronously. The upper part of the first spring (23) is fixedly set on the second pressing plate (24). The linear actuator (25) is vertically positioned above the second pressing plate (24) and is used to drive the second pressing plate (24) to move; The mounting base (26) is set on the second pressing plate (24), and the upper die-cutting head (22) is fixedly set at the bottom of the mounting base (26).

3. The die cutting machine for paper cup processing according to claim 2, characterized in that, The upper die-cutting unit (2) also includes a first extension rod (212) and a limiting ring (213); The first extension rod (212) is vertically fixed on the upper part of the first pressing plate (21), and the first extension rod (212) passes vertically through the second pressing plate (24) and slides with the second pressing plate (24); The limiting ring (213) is fixedly installed on the upper part of the first extension rod (212).

4. The die cutting machine for paper cup processing according to claim 2, characterized in that, The upper die-cutting unit (2) also includes a snap-fit ​​block (241), a slide (242), and a snap-fit ​​groove (243). The snap-fit ​​block (241) is vertically moved and positioned on the upper part of the second pressing plate (24) and passes through the second pressing plate (24); The slide groove (242) is horizontally opened on the side of the second pressing plate (24), and the mounting base (26) slides in conjunction with the slide groove (242); The snap-fit ​​groove (243) is vertically opened on the upper part of the mounting base (26), and the snap-fit ​​block (241) engages with the snap-fit ​​groove (243).

5. The die cutting machine for paper cup processing according to claim 4, characterized in that, Above the second pressing plate (24) are also provided a second compression rod, a second spring (245), an unlocking bar (246) and a connecting bracket (247); The connecting bracket (247) is fixedly mounted on the upper part of the snap-fit ​​block (241); The second compression rod is vertically fixed on the upper part of the second pressing plate (24) and passes through the connecting frame (247). The second compression rod and the connecting frame (247) slide in the vertical direction. The second spring (245) is vertically installed on the upper part of the connecting frame (247), and the two ends of the second spring (245) are fixedly connected to the upper part of the second compression rod and the upper part of the connecting frame (247), respectively. The unlocking bar (246) is horizontally movable below the connecting frame (247), and a protrusion (2461) for guiding the lifting and lowering of the connecting frame (247) is fixedly provided on the upper part of the unlocking bar (246).

6. A die-cutting machine for paper cup processing according to claim 5, characterized in that, A lead screw (248) is horizontally rotatably mounted on the side wall of the unlocking bar (246). The lead screw (248) passes horizontally through the second pressing plate (24) and is threadedly engaged with the second pressing plate (24). A rotating handle (249) is provided at the end of the lead screw (248).

7. The die cutting machine for paper cup processing according to claim 2, characterized in that, A guide groove (214) is provided on the upper part of the first pressing plate (21), and the guide groove (214) slides with the lower part of the mounting base (26). The second die-cutting hole (211) is provided at the bottom of the guide groove (214).

8. The die cutting machine for paper cup processing according to claim 7, characterized in that, A ventilation groove (215) is provided on one side of the guide groove (214).

9. The die cutting machine for paper cup processing according to claim 1, characterized in that, A conveyor wheel (12), a support wheel (13) and a motor (14) are provided on the side of the first die-cutting hole (11). The support wheel (13) is rotatably mounted on the base (1) and provides support for the cardboard (3). The support wheel (13) rolls with the lower part of the cardboard (3). The conveyor wheel (12) is rotatably mounted above the support wheel (13), and the conveyor wheel (12) rolls in contact with the upper part of the cardboard (3); The motor (14) is located at the end of the conveyor wheel (12) and is used to drive the conveyor wheel (12) to rotate.

10. The die cutting machine for paper cup processing according to claim 1, characterized in that, An inclined plate (15) is provided below the first die-cutting hole (11).

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