A kind of folding-resistant transfer silver card paper and silver card paper box processing equipment

CN224855957UActive Publication Date: 2026-10-16ZHEJIANG TIANQI PACKAGE MATERIAL
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Patent Information

Application Number
CN202522785997.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-12-29
Publication Date
2026-10-16
Estimated Expiration
2035-12-29

AI Technical Summary

Technical Problem

针对现有技术的不足,本实用新型提供了一种耐折转移银卡纸及银卡纸盒加工设备,解决了现有装置无法阻挡刀具碎片崩碎飞溅和现有装置需要人工将卡板压到银卡纸上,防止其与刀具粘黏,易降低生产效率的问题

Benefits of technology

1、本实用新型结构合理,通过设置切割防护模块,在刀具下落时,该模块即可被触发启动,从而在切割位置的四周升起用于防止刀具崩碎飞溅的防具,这在一定程度上可以减少因为刀具长期使用导致刀具硬度降低,从而在切割时发生刀具崩碎飞溅,继而造成周围人员受伤的可能性。

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Abstract

The utility model relates to silver card paper and silver card paper box processing equipment technical field, and disclose a kind of folding-resistant transfer silver card paper and silver card paper box processing equipment, including table board, table leg, cutting protection module, inverted U-shaped plate, cutting table and first cylinder machine, the bottom of the table board is sequentially equipped with table leg and cutting protection module from front to back, the top of the table board is sequentially fixedly connected with inverted U-shaped plate and cutting table from left to right, the top of the inverted U-shaped plate is equipped with square groove, the top of the inverted U-shaped plate is equipped with first cylinder machine.The utility model structure is reasonable, by setting cutting protection module, when cutter falls, the module can be triggered to start, so as to rise around cutting position for preventing cutter collapse splashing of shield, which can reduce the hardness of cutter due to long-term use to a certain extent, so that cutter collapse splashing occurs when cutting, in turn cause the possibility of surrounding personnel injury.
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Description

Technical Field

[0001] This utility model relates to the technical field of silver cardboard and silver cardboard box processing equipment, specifically to a fold-resistant transfer silver cardboard and silver cardboard box processing equipment. Background Technology

[0002] Fold-resistant transfer silver cardboard is a type of packaging paper with an aluminized transfer surface and high fold-resistance. It is widely used in high-end paper box packaging for food, cosmetics, tobacco, and alcohol. Its supporting processing equipment needs to be adapted to the fold-resistance characteristics and metallic surface of the paper to realize the whole process from paper cutting to paper box forming. The cross-cutting machine is the first machine used among all the processing equipment. The quality of the silver cardboard after it is processed determines the quality of the silver cardboard boxes produced by subsequent machines.

[0003] A cutting device for producing high-grade coated white cardboard, disclosed in Chinese Utility Model Patent Application Publication No. CN211362497U, although the device uses a crossbar to position the coated white cardboard body, adjusts the threaded tube to press the pressure plate against the coated white cardboard body, and presses down the crossbar to drive the cutter to cut the coated white cardboard body, and when the cutter is pulled up, the pressure plate will press the coated white cardboard body to prevent the blade from sticking, and the whole device has a simple and compact structure, making it convenient for users. However, the device ignores the fact that the hardness of the blade may decrease after long-term use, which may cause the blade to break and fly during cutting, injuring people around. The device also ignores the fact that manually attaching or removing the cardboard plate to or from the silver cardboard before and after cutting is labor-intensive and reduces production efficiency. Utility Model Content

[0004] (a) Technical problems to be solved To address the shortcomings of existing technologies, this utility model provides a fold-resistant transfer silver cardboard and silver cardboard box processing equipment, which solves the problems that existing devices cannot prevent blade fragments from shattering and flying, and that existing devices require manual pressing of the cardboard onto the silver cardboard to prevent it from sticking to the blade, which easily reduces production efficiency.

[0005] (II) Technical Solution To achieve the above objectives, this utility model provides the following technical solution: a processing equipment for fold-resistant transfer silver cardboard and silver cardboard boxes, comprising a table, with table legs and a cutting protection module arranged sequentially from front to back on the bottom of the table, and an inverted U-shaped plate and a cutting table fixedly connected sequentially from left to right on the top of the table, the top of the inverted U-shaped plate having a square groove, a first cylinder machine on the top of the inverted U-shaped plate, the first cylinder machine being threadedly connected to the inverted U-shaped plate via a first cylinder machine bolt, a cylinder rod at the bottom of the first cylinder machine, a circular plate fixedly connected to one end of the cylinder rod, a tool clamping plate at the bottom of the circular plate, a tool clamping plate being threadedly connected to the circular plate via a circular plate bolt, a tool being installed inside the tool clamping plate, the tool being threadedly connected to the tool clamping plate via a tool bolt, a cutting anti-sticking module being provided on both the front and back of the tool, a limiting block on the top of the cutting table, the limiting block being threadedly connected to the cutting table via a limiting block bolt, and a strip groove and a circular hole arranged sequentially from left to right on the top of the table.

[0006] Optionally, the cutting protection module includes a grooved plate, a protective plate is installed inside the grooved plate, a table is fixedly connected to the bottom of the grooved plate, an upper plate is fixedly connected to the bottom of the protective plate, and a second cylinder is provided at the bottom of the upper plate.

[0007] Optionally, the bottom of the second cylinder is provided with a base plate, the second cylinder is connected to the base plate by bolts, the top of the base plate is fixedly connected with a vertical plate, and the side of the base plate is fixedly connected with an extension plate.

[0008] Optionally, the top of the extension plate is provided with a trigger, the trigger is threadedly connected to the extension plate by a trigger bolt, the top of the trigger is provided with a trigger button, the surface of the trigger is provided with a connecting wire, and the trigger is mounted with an starter through the connecting wire.

[0009] Optionally, a second cylinder is fixedly connected to one side of the starter, a first spring is fixedly connected to the top of the trigger, a vertical column is fixedly connected to the top of the first spring, and a trigger rod is fixedly connected to the bottom of the vertical column.

[0010] Optionally, a connecting plate is fixedly connected to the top of the vertical column, and a cylinder rod is fixedly connected to one side of the connecting plate. The protective plate and the strip groove are mutually adapted to each other, and the vertical column and the circular hole are mutually adapted to each other.

[0011] Optionally, the cutting anti-sticking module includes a front connecting strip and a back connecting strip, with a second spring fixedly connected to the bottom of the front connecting strip and the back connecting strip, and a sponge base plate fixedly connected to the bottom of the second spring, with sponge provided at the bottom of the sponge base plate.

[0012] Optionally, the front connecting strip and the back connecting strip have threaded holes on their front sides, and connecting bolts are threaded into the internal threads of the threaded holes. Both the front connecting strip and the back connecting strip are fitted with cutting tools via connecting bolts.

[0013] In summary, the technical effects and advantages of this utility model are as follows: 1. This utility model has a reasonable structure. By setting a cutting protection module, the module can be triggered and activated when the blade falls, thereby raising protective gear around the cutting position to prevent the blade from breaking and flying. This can reduce the possibility of the blade breaking and flying during cutting due to the hardness of the blade decreasing due to long-term use, which could cause injury to people around it.

[0014] 2. In this utility model, by setting a cutting anti-sticking module, after the cutter finishes cutting, the module can fix the silver cardboard in place. After the cutter is lifted, the silver cardboard separates from the cutter. Then the module can be lifted to a higher position together with the cutter, and the silver cardboard and the cutter will not stick. Compared with the existing device that requires manual clamping of the cardboard onto the silver cardboard and removal of the cardboard after cutting, this device does not require manual intervention throughout the process. This can reduce the workload of workers to a certain extent and improve production efficiency to a certain extent. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 for Figure 1 A schematic diagram of the second form; Figure 3 for Figure 1 A schematic diagram of the exploded structure; Figure 4 for Figure 3 Enlarged schematic diagram of a local part of the structure; Figure 5 for Figure 1 Schematic diagram of the tool assembly; Figure 6 for Figure 1 Schematic diagram of the cutting protection module; Figure 7 for Figure 6 Schematic diagram of the protective plate assembly; Figure 8 for Figure 6 A schematic diagram of the trigger assembly; Figure 9 for Figure 1 A schematic diagram of the cutting and anti-sticking module.

[0016] In the diagram: 1. Tabletop; 2. Table legs; 3. Cutting protection module; 301. Grooved plate; 302. Protective plate; 303. Top plate; 304. Second cylinder; 305. Base plate; 306. Vertical plate; 307. Extension plate; 308. Trigger; 309. Trigger button; 310. Connecting wire; 311. Starter; 312. First spring; 313. Vertical column; 314. Trigger rod; 315. Connecting long plate; 4. Inverted U-shaped plate; 5. Cutting table; 6. First cylinder; 7. Cylinder rod; 8. Circular plate; 9. Tool clamp; 10. Tool; 11. Cutting anti-sticking module; 1101. Front connecting strip; 1102. Back connecting strip; 1103. Second spring; 1104. Sponge base plate; 1105. Sponge; 1106. Connecting bolt; 12. Limiting block. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Example: Reference Figures 1-5 The illustrated equipment for processing fold-resistant transfer silver cardboard and silver cardboard boxes includes a table 1. The bottom of the table 1 has table legs 2 and a cutting protection module 3 arranged sequentially from front to back. The top of the table 1 has an inverted U-shaped plate 4 and a cutting table 5 fixedly connected sequentially from left to right. A square groove is formed at the top of the inverted U-shaped plate 4. A first cylinder machine 6 is mounted on the top of the inverted U-shaped plate 4. The inverted U-shaped plate 4 is connected to the first cylinder machine 6 via bolts. A cylinder rod 7 is located at the bottom of the first cylinder machine 6, with one end of the cylinder rod 7 fixed... A circular plate 8 is connected, and a tool clamping plate 9 is provided at the bottom of the circular plate 8. The circular plate 8 is connected to the tool clamping plate 9 by a circular plate bolt thread. A tool 10 is installed inside the tool clamping plate 9. The tool 10 is connected to the tool clamping plate 9 by a tool bolt thread. Cutting anti-sticking modules 11 are provided on both the front and back of the tool 10. A limiting block 12 is provided on the top of the cutting table 5. The limiting block 12 is connected to the cutting table 5 by a limiting block bolt thread. A strip groove and a circular hole are opened sequentially from left to right on the top of the table 1.

[0019] Table legs 2 are welded to the bottom of tabletop 1. Cutting protection module 3 is installed to the bottom of tabletop 1. Inverted U-shaped plate 4 and cutting table 5 are welded to the top of tabletop 1. Square groove and inverted U-shaped plate 4 are integrally formed. First cylinder machine 6 is installed to the top of inverted U-shaped plate 4 by first cylinder machine bolt. Cylinder rod 7 is integrally connected to first cylinder machine 6. Circular plate 8 is welded to the bottom of cylinder rod 7. Tool clamp 9 is installed to the bottom of circular plate 8 by circular plate bolt. Tool 10 is installed inside tool clamp 9 and fixed with tool bolt. Cutting anti-sticking module 11 is installed on tool 10. Limiting block 12 is installed to the top of cutting table 5 by limiting block bolt. Strip groove and circular hole are integrally formed with tabletop 1.

[0020] Place the silver cardstock that needs to be precisely cut onto the cutting table 5. The limiting block 12 prevents the silver cardstock from moving around during cutting. Start the first cylinder 6, which drives the cylinder rod 7 to descend, thereby driving the cutter 10 to descend and cut. At the same time as the cylinder rod 7 descends, the cutting protection module 3 is triggered and activated to prevent the cutter 10 from breaking and splashing. When the cutter is about to fall onto the silver cardstock, the cutting anti-sticking module 11 reaches the silver cardstock in advance. After the cutter 10 has finished cutting the silver cardstock, the cutting anti-sticking module 11 separates the silver cardstock from the cutter 10 without manual intervention, and the silver cardstock and the cutter 10 will not stick together.

[0021] As a preferred embodiment of this example, Figure 6 and Figure 8 As shown, the cutting protection module 3 includes a grooved plate 301, a protective plate 302 is installed inside the grooved plate 301, a table 1 is fixedly connected to the bottom of the grooved plate 301, an upper top plate 303 is fixedly connected to the bottom of the protective plate 302, and a second cylinder 304 is provided at the bottom of the upper top plate 303.

[0022] The bottom of the second cylinder 304 is provided with a base plate 305. The second cylinder 304 is connected to the base plate 305 by bolts. The top of the base plate 305 is fixedly connected with a vertical plate 306, and the side of the base plate 305 is fixedly connected with an extension plate 307.

[0023] The top of the extension plate 307 is provided with a trigger 308, which is connected to the extension plate 307 by a trigger bolt. The top of the trigger 308 is provided with a trigger button 309, and the surface of the trigger 308 is provided with a connecting wire 310. The trigger 308 is equipped with an starter 311 through the connecting wire 310.

[0024] A second cylinder 304 is fixedly connected to one side of the starter 311, a first spring 312 is fixedly connected to the top of the trigger 308, a vertical column 313 is fixedly connected to the top of the first spring 312, and a trigger rod 314 is fixedly connected to the bottom of the vertical column 313.

[0025] A connecting plate 315 is fixedly connected to the top of the vertical column 313, and a cylinder rod 7 is fixedly connected to one side of the connecting plate 315. The protective plate 302 and the strip groove are mutually adapted, and the vertical column 313 and the circular hole are mutually adapted.

[0026] The grooved plate 301 is welded to the top of the table 1. The protective plate 302 is inserted into the grooved plate 301. The upper top plate 303 is welded to the bottom of the protective plate 302. The second cylinder 304 is installed to the top of the base plate 305 by the second cylinder bolt. The upper top plate 303 is fixed to the second cylinder 304 by bolts. The upright plate 306 is welded to the top of the base plate 305. The extension plate 307 is welded to the side of the base plate 305. The trigger 308 is installed to the top of the extension plate 307 by the trigger bolt. The trigger button 309 and the trigger 308 are connected as one unit. The connecting wire 310 is installed between the starter 311 and the trigger 308. The starter 311 and the trigger 308 are connected as one unit. The first spring 312 is welded between the trigger 308 and the vertical column 313. The trigger rod 314 is welded to the bottom of the vertical column 313. The connecting long plate 315 is welded between the vertical column 313 and the cylinder rod 7.

[0027] When the cutter 10 is not falling to make a cutting motion, the top of the protective plate 302 is exactly at the top of the slot, so that the top of the protective plate 302 is flush with the table 1. When the cutter 10 falls, the cylinder rod 7 descends, and the connecting plate 315 and the vertical column 313 descend together. The vertical column 313 compresses and deforms the first spring 312, and the vertical column 313 drives the trigger rod 314 to move downward. The trigger rod 314 presses the trigger button 309, so that the start signal is transmitted to the starter 311 through the connecting line 310, which then starts the second cylinder 304, thereby lifting the upper plate 303 upward, and the protective plate 302 also moves upward. When the cutter 10 falls completely, the protective plate 302 completely protects the cutter 10 from all sides, and the protective plate 302 slides up and down in the grooved plate 301.

[0028] By setting up the cutting protection module 3, the module can be triggered and activated when the blade 10 falls, thereby raising protective gear around the cutting position to prevent the blade 10 from shattering and flying. This can reduce the possibility of the blade 10 shattering and flying during cutting due to the decrease in hardness caused by long-term use, which could then injure people in the surrounding area.

[0029] like Figure 9As shown, in this embodiment, the cutting anti-sticking module 11 includes a front connecting strip 1101 and a back connecting strip 1102. A second spring 1103 is fixedly connected to the bottom of the front connecting strip 1101 and the back connecting strip 1102. A sponge base plate 1104 is fixedly connected to the bottom of the second spring 1103. A sponge 1105 is provided at the bottom of the sponge base plate 1104.

[0030] The front connecting strip 1101 and the back connecting strip 1102 have threaded holes on their front sides, and connecting bolts 1106 are threaded into the internal threads of the threaded holes. Both the front connecting strip 1101 and the back connecting strip 1102 are fitted with cutting tools 10 via the connecting bolts 1106.

[0031] Both the front connecting strip 1101 and the back connecting strip 1102 are installed to the front and back of the cutter 10 by connecting bolts 1106. The second spring 1103 is welded between the front connecting strip 1101, the back connecting strip 1102 and the sponge base plate 1104, while the sponge 1105 is glued to the bottom of the sponge base plate 1104.

[0032] As the cutter 10 falls, the sponge 1105 will land on the silver cardboard before the cutter 10. As the cutter 10 continues to fall, the second spring 1103 is compressed and deformed. Since the sponge 1105 is soft, it will not damage the silver paint on the silver cardboard. After the cutter 10 has completely cut the silver cardboard, the cutter 10 will lift up. After lifting up, the cutter 10 will detach from the silver cardboard by a certain distance. The second spring 1103 will return to its original state after compression and deformation. At the moment the second spring 1103 returns to its original state, the sponge 1105 will push the silver cardboard away, thereby separating the silver cardboard from the cutter 10.

[0033] By setting up a cutting anti-sticking module 11, after the cutter 10 finishes cutting, the module can fix the silver card paper in place. After the cutter 10 is lifted, the silver card paper separates from the cutter 10. Then the module can be lifted to a higher position together with the cutter 10, and the silver card paper and the cutter 10 will not stick together. Compared with the existing device that requires manual clamping of the card plate onto the silver card paper and removal of the card plate after cutting, this device does not require manual intervention throughout the process. This can reduce the workload of workers to a certain extent and improve production efficiency to a certain extent.

[0034] The working principle of this practical application is as follows: The silver cardstock requiring fine cutting is placed on the cutting table 5. The limiting block 12 prevents the silver cardstock from moving during cutting. The first cylinder 6 is activated, driving the cylinder rod 7 to descend, which in turn lowers the cutter 10 for cutting. Simultaneously with the descent of the cylinder rod 7, the cutting protection module 3 is triggered and activated to prevent the cutter 10 from shattering and splashing. Just as the cutter is about to land on the silver cardstock, the cutting anti-sticking module 11 reaches the silver cardstock in advance. After the cutter 10 has finished cutting the silver cardstock, the cutting anti-sticking module 11 then separates the silver cardstock from the cutter. The separation of the 10-piece cutter and the silver cardboard does not require manual intervention, and the silver cardboard and the cutter 10 do not stick together. When the cutter 10 is not falling to make a cutting motion, the top of the protective plate 302 is exactly at the top of the strip groove, so that the top of the protective plate 302 is flush with the tabletop 1. When the cutter 10 falls, the cylinder rod 7 descends, and the connecting long plate 315 and the vertical column 313 descend together. This causes the vertical column 313 to compress and deform the first spring 312, and the vertical column 313 will drive the trigger rod 314 to move downward. When the trigger lever 314 is pressed to the trigger button 309, the start signal is transmitted to the starter 311 through the connecting wire 310, which in turn starts the second cylinder 304, thereby lifting the upper plate 303 upwards. This causes the protective plate 302 to follow suit. When the cutter 10 falls completely, the protective plate 302 completely protects the cutter 10 from all sides. The protective plate 302 slides up and down within the grooved plate 301. As the cutter 10 falls, the sponge 1105 will land before the cutter 10. As the blade 10 continues to fall onto the silver cardstock, the second spring 1103 is compressed and deformed, while the sponge 1105 is soft and will not damage the silver paint on the silver cardstock. After the blade 10 has completely cut the silver cardstock, it will lift up. After lifting up, the blade 10 will detach from the silver cardstock by a certain distance. The second spring 1103 will return to its original state from compression deformation. At the moment the second spring 1103 returns to its original state, the sponge 1105 will push the silver cardstock away, thereby separating the silver cardstock from the blade 10.

[0035] All electrical components mentioned in this article are connected to an external main controller and 220V AC mains power, and the main controller can be a conventional known device such as a computer that can control it.

[0036] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A processing equipment for fold-resistant transfer silver cardboard and silver cardboard boxes, comprising a table (1), characterized in that: The bottom of the tabletop (1) is provided with table legs (2) and a cutting protection module (3) from front to back. The top of the tabletop (1) is fixedly connected with an inverted U-shaped plate (4) and a cutting table (5) from left to right. The top of the inverted U-shaped plate (4) is provided with a square groove. The top of the inverted U-shaped plate (4) is provided with a first cylinder machine (6). The first cylinder machine (6) is threadedly connected to the inverted U-shaped plate (4) by a first cylinder machine bolt. The bottom of the first cylinder machine (6) is provided with a cylinder rod (7). One end of the cylinder rod (7) is fixedly connected with a circular plate (8). The circular plate (8) The bottom of the cutting table (5) is provided with a tool clamp (9). The circular plate (8) is connected to the tool clamp (9) by a circular plate bolt. The tool (10) is installed inside the tool clamp (9). The tool (10) is connected to the tool clamp (9) by a tool bolt. The front and back of the tool (10) are provided with a cutting anti-sticking module (11). The top of the cutting table (5) is provided with a limiting block (12). The limiting block (12) is connected to the cutting table (5) by a limiting block bolt. The top of the table (1) is provided with a strip groove and a circular hole from left to right.

2. The equipment for processing fold-resistant transfer silver cardboard and silver cardboard boxes according to claim 1, characterized in that: The cutting protection module (3) includes a grooved plate (301), a protective plate (302) is installed inside the grooved plate (301), a table (1) is fixedly connected to the bottom of the grooved plate (301), an upper plate (303) is fixedly connected to the bottom of the protective plate (302), and a second cylinder (304) is provided at the bottom of the upper plate (303).

3. The equipment for processing fold-resistant transfer silver cardboard and silver cardboard boxes according to claim 2, characterized in that: The bottom of the second cylinder (304) is provided with a base plate (305). The second cylinder (304) is connected to the base plate (305) by bolts. The top of the base plate (305) is fixedly connected with a vertical plate (306). The side of the base plate (305) is fixedly connected with an extension plate (307).

4. The equipment for processing fold-resistant transfer silver cardboard and silver cardboard boxes according to claim 3, characterized in that: The top of the extension plate (307) is provided with a trigger (308), the trigger (308) is threadedly connected to the extension plate (307) by a trigger bolt, the top of the trigger (308) is provided with a trigger button (309), the surface of the trigger (308) is provided with a connecting line (310), and the trigger (308) is equipped with an starter (311) through the connecting line (310).

5. The equipment for processing fold-resistant transfer silver cardboard and silver cardboard boxes according to claim 4, characterized in that: A second cylinder (304) is fixedly connected to one side of the starter (311), a first spring (312) is fixedly connected to the top of the trigger (308), a vertical column (313) is fixedly connected to the top of the first spring (312), and a trigger rod (314) is fixedly connected to the bottom of the vertical column (313).

6. The equipment for processing fold-resistant transfer silver cardboard and silver cardboard boxes according to claim 5, characterized in that: The top of the vertical column (313) is fixedly connected to a connecting plate (315), and a cylinder rod (7) is fixedly connected to one side of the connecting plate (315). The protective plate (302) and the strip groove are mutually adapted to each other, and the vertical column (313) and the circular hole are mutually adapted to each other.

7. The equipment for processing fold-resistant transfer silver cardboard and silver cardboard boxes according to claim 1, characterized in that: The cutting anti-sticking module (11) includes a front connecting strip (1101) and a back connecting strip (1102). A second spring (1103) is fixedly connected to the bottom of the front connecting strip (1101) and the back connecting strip (1102). A sponge base plate (1104) is fixedly connected to the bottom of the second spring (1103). A sponge (1105) is provided at the bottom of the sponge base plate (1104).

8. The equipment for processing fold-resistant transfer silver cardboard and silver cardboard boxes according to claim 7, characterized in that: The front connecting strip (1101) and the back connecting strip (1102) have connecting threaded holes on their front sides. Connecting bolts (1106) are threaded into the internal parts of the connecting threaded holes. Both the front connecting strip (1101) and the back connecting strip (1102) are fitted with cutting tools (10) via connecting bolts (1106).

Citation Information

Patent Citations

  • Cutting equipment for producing high-grade coated ivory board

    CN211362497U