CN221641020U - Full-automatic cutting device of foam adhesive tape - Google Patents

Abstract

The utility model discloses a fully automatic cutting device for foam tape, including a bottom plate and an auxiliary pressing device. The utility model is provided with an auxiliary pressing device, that is, before the foam tape is cut, the first pressing strip and the second pressing strip provided inside the pressing component can be stably pressed against each other by the elastic force of the compression spring provided outside the connecting rod, thereby ensuring that when the cutting tool is cut and removed, it is not easy to cause adhesion and pulling damage to the tape, thereby achieving the advantages of auxiliary pressing and matching for cutting, reducing the adhesion and pulling phenomenon between the foam tape and the cutting tool, and providing an adjustment component, that is, under the transmission of the worm and the gear, the gear can be equidistant from the tooth block inside the fixed shaft to achieve the upward adjustment of the entire connecting strip, so that the pressing component provided at the bottom of the connecting strip can be adjusted accordingly to change the pressing position, thereby achieving the advantages of flexible adjustment of the pressing position to meet the use requirements of larger-sized foam tapes.

Description

A fully automatic cutting device for foam tape

Technical Field

The utility model relates to the field related to the production of foam tapes, in particular to a fully automatic cutting device for foam tapes.

Background Art

Foam tape is made of EVA or PE foam as the base material, with solvent-based pressure-sensitive adhesive coated on one or both sides and then covered with release paper. It has the functions of sealing and shock absorption, and has excellent sealing, compression deformation resistance, flame retardancy, wettability, etc. The product is widely used in electronic and electrical products, mechanical parts, various small household appliances, mobile phone accessories, industrial instruments, computers and peripheral equipment, auto parts, audio-visual equipment, toys, cosmetics, etc.

After the foam tape is produced, it has a long length and needs to be cut into small rolls for subsequent packaging, sales and terminal use. The general structure of the existing foam tape slitting machine includes an electric rotary blade and a fixed table.

The existing application number is CN202320958363.0, which is an automatic foam tape slitting machine, including a power module, a workbench, an electric slitting machine body, a slitting cylinder, an electric linear slide, and an electric drive mechanism. The slitting cylinder is installed on the workbench, and a guide groove is provided on the side of the slitting cylinder. The electric drive mechanism includes a motor reduction mechanism and a traction wheel installed together, and the inner side of the traction wheel is located on the inner side of the guide groove; the outer shell of the electric linear slide is installed on one side of the lower end of the workbench, and the motor housing of the electric slitting machine body is installed on the sliding block of the electric linear slide; the power module, the control circuit, the detection circuit, and the power switch are installed in the electric control box and electrically connected. The new type does not require manual operation. After the staff puts the foam tape to be slit vertically in the slitting cylinder, the relevant equipment can automatically cut the foam tape into small sections according to the set length, thereby bringing convenience to the staff, improving the slitting efficiency, and reducing the probability of personal injury to the staff;

The above-mentioned existing cutting device places the foam tape roll vertically in the slitting cylinder and quickly rotates the blade to achieve rapid cutting of the foam tape. However, during the cutting process, due to the stickiness of the side of the foam tape, when the blade is removed after cutting, it is easy to cause pulling on other foam tapes, thereby affecting the quality of the small rolls of foam tape cut subsequently.

Utility Model Content

Therefore, in order to solve the above-mentioned shortcomings, the utility model provides a foam tape fully automatic cutting device.

In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a fully automatic cutting device for foam tape, comprising a base plate and a cutting tool, a controller is installed on the upper right end of the base plate, a support plate is fastened to the left side of the base plate, a clamp is connected to the inner side of the upper end of the support plate, and the left side of the clamp is connected to the first motor, the right side of the clamp is connected to the rotating shaft, a slider is built into the upper end of the support plate, and the left side of the slider is connected to the second motor, and also includes an auxiliary clamping device arranged on the outside of the cutting tool, the auxiliary clamping device includes a connecting strip arranged at the upper end of the cutting tool, side strips arranged on both sides of the lower end of the connecting strip, a limiting strip fixed on the inner side of the side strip, a connecting rod inserted at the lower end of the side strip, a compression spring installed on the outside of the connecting rod, a clamping assembly connected to the bottom of the connecting rod, and an adjusting assembly installed in the middle of the connecting strip.

Preferably, a screw and a guide rod are respectively provided at the middle part and the front and rear sides of the second motor, and the outer sides of the screw and the guide rod are connected to the upper end of the cutting tool, the top of the support plate is fastened with a connecting frame, the upper ends of both sides of the connecting frame are equipped with a first cylinder, and the lower ends of the first cylinders on both sides are connected to the slider, a movable plate is relatively provided at the lower end of the right side of the connecting frame, and the bottom of the movable plate is slidably connected to the guide rail, a second cylinder is provided at the upper end of the guide rail, and the left side of the second cylinder is connected to the movable plate, the upper end of the movable plate is rotatably connected with a connecting tube, and the left side of the connecting tube is plugged into the rotating shaft.

Preferably, the clamping assembly includes a connecting plate fastened to the lower end of the connecting rod, a connecting shaft inserted in the middle of the connecting plate, a first pressure strip connected to the lower end of the connecting shaft, a pin shaft inserted on both sides of the outer end of the first pressure strip, and a second pressure strip connected to the outer side of the pin shaft.

Preferably, the adjustment assembly includes a shell fastened to the middle part of the connecting strip, a fixed shaft inserted into the shell and fastened to the upper end of the cutting tool, tooth blocks equidistantly arranged inside the fixed shaft, a gear meshed with the outer side of the tooth block and rotatably connected to the inside of the shell, a worm connected to the upper end of the gear, and a knob connected to the outer end of the worm.

Preferably, the side strips are symmetrically installed along the lower end of the connecting strip, and the side strips on both sides are slidably connected to the outer sides of the two ends of the cutting tool through the limiting strips arranged on the inner sides.

Preferably, the first pressure strip and the second pressure strip are both arranged in an arc-shaped strip shape, and the arc-shaped surfaces at the bottom of the first pressure strip and the second pressure strip are both polished to be smooth and without barbs.

Preferably, the first pressure strip is symmetrically plugged with pins at the front and rear ends, and the first pressure strip is installed relative to the second pressure strip via the pins at the front and rear ends.

Preferably, the tooth blocks are vertically equidistantly arranged inside one side of the tooth block along the fixed shaft, and the tooth blocks are meshed and connected with the tooth angles arranged on the outer side of the gear in a matching manner.

Beneficial effects of the utility model:

Advantage 1: The utility model is provided with an auxiliary pressing device, that is, before the foam tape is cut, the first pressing strip and the second pressing strip arranged inside the pressing assembly can stably press against the foam tape under the cooperation of the elastic force of the compression spring arranged on the outside of the connecting rod, thereby ensuring that the tape is not easily damaged by adhesion and pulling when the cutting tool is cut and removed, thereby achieving the advantage of auxiliary pressing cooperation for cutting and reducing the adhesion and pulling phenomenon between the foam tape and the cutting tool.

Advantage 2: The utility model provides an adjustment component, that is, under the transmission of the worm and the gear, the gear can be equidistant from the tooth block along the inside of the fixed axis to achieve the upward adjustment of the entire connecting strip. In this way, the clamping component provided at the bottom of the connecting strip can be adjusted accordingly to change the clamping position, thereby achieving the advantage of flexible adjustment of the clamping position to meet the needs of using larger-sized foam tapes.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1 is a schematic diagram of the structure of the utility model;

Figure 2 is an enlarged schematic diagram of the structure of point A of the utility model;

Figure 3 is a schematic diagram of the structure of the auxiliary pressing device of the utility model;

FIG4 is a schematic diagram of the disassembled structure of the clamping assembly of the utility model;

FIG. 5 is a schematic diagram of the internal structure of the adjustment component of the utility model from the front view.

Among them: base plate-1, controller-2, support plate-3, clamp-4, first motor-5, rotating shaft-6, slider-7, second motor-8, screw-9, guide rod-10, cutting tool-11, connecting frame-12, first cylinder-13, movable plate-14, guide rail-15, second cylinder-16, connecting tube-17, auxiliary clamping device-18, connecting strip-181, side strip-182, limit strip-183, connecting rod-184, compression spring-185, clamping assembly-186, connecting plate-1861, connecting shaft-1862, first pressure strip-1863, pin shaft-1864, second pressure strip-1865, adjustment assembly-187, housing-1871, fixed shaft-1872, gear block-1873, gear-1874, worm-1875, knob-1876.

DETAILED DESCRIPTION

In order to further explain the technical solution of the present utility model, it is described in detail through specific embodiments below.

Please refer to Figures 1-2. The utility model provides a fully automatic cutting device for foam tape, including a bottom plate 1 and a cutting tool 11. A controller 2 is installed on the front side of the upper right end of the bottom plate 1. A support plate 3 is vertically and fastened to the left side of the bottom plate 1. A clamp 4 is connected to the inner side of the upper end of the support plate 3, and the left side of the clamp 4 is connected to the first motor 5. The right side of the clamp 4 is connected to the rotating shaft 6. A slider 7 is built-in and slidably arranged inside the upper end of the support plate 3, and the left side of the slider 7 is connected to the second motor 8. A screw 9 and a guide rod 10 are respectively arranged in the middle and front and rear sides of the second motor 8, and the outer sides of the screw 9 and the guide rod 10 are connected to the upper end of the cutting tool 11. The left side of the screw rod 9 is connected to the second motor 8, the top of the support plate 3 is fastened with a connecting frame 12, the upper ends of both sides of the connecting frame 12 are installed with first cylinders 13, and the lower ends of the first cylinders 13 on both sides are connected to the slider 7, a movable plate 14 is relatively provided at the lower end of the right side of the connecting frame 12, and the bottom of the movable plate 14 is slidably connected to the guide rail 15, a second cylinder 16 is provided at the upper end of the guide rail 15, and the left side of the second cylinder 16 is connected to the movable plate 14, the upper end of the movable plate 14 is rotatably connected with a connecting tube 17, and the left side of the connecting tube 17 is plugged with the rotating shaft 6, and also includes an auxiliary clamping device 18 arranged on the outside of the cutting tool 11;

Among them, another slider 7 is slidably built into the right side of the connecting frame 12, and the middle of the upper end of the other slider 7 is connected to the first cylinder 13, and the middle and front and rear sides of the other slider 7 are respectively connected to the screw rod 9 and the guide rod 10.

Please refer to Figure 3. The auxiliary clamping device 18 in this embodiment includes a connecting strip 181 longitudinally installed on the upper end of the cutting tool 11 for supporting cooperation, side strips 182 symmetrically and tightly connected to both sides of the lower end of the connecting strip 181, and the side strips 182 slide against the front and rear side walls of the cutting tool 11, so as to ensure the stability of the subsequent clamping state and the stability of the lifting and adjustment activities, a limit strip 183 vertically fixedly connected to the inner ends of the side strips 182 on both sides to realize vertical limit connection cooperation, a connecting rod 184 vertically inserted into the lower ends of the side strips 182 on both sides for telescopic cooperation, a compression spring 185 provided at the outer ends of the connecting rods 184 on both sides for elastic compression cooperation, a compression component 186 connected to the bottom of the connecting rods 184 on both sides to realize foam tape cutting and compression cooperation, and an adjustment component 187 installed in the middle of the connecting strip 181 to realize auxiliary upward adjustment of the clamping position.

Specifically, the side strips 182 are symmetrically installed along the front and rear ends of the lower end of the connecting strip 181, and the side strips 182 on both sides are slidably connected to the outer sides of the two ends of the cutting tool 11 through the limit strips 183 set on the inner side, ensuring that the side strips 182 on both sides cooperate with the limit strips 183 set at the inner ends to achieve stable vertical movement along the front and rear sides of the cutting tool 11.

Please refer to Figure 4. The clamping assembly 186 in this embodiment includes a connecting plate 1861 that is correspondingly fastened to the lower ends of the connecting rods 184 on both sides to achieve support connection cooperation, a connecting shaft 1862 that is correspondingly vertically inserted in the middle of the connecting plate 1861, a first pressure strip 1863 is arranged at the lower end of the connecting shaft 1862 to achieve left-side auxiliary clamping cooperation, a pin shaft 1864 that is symmetrically inserted at both sides of the outer end of the first pressure strip 1863 to achieve quick plug-in, and a second pressure strip 1865 that is connected to the outer ends of the pin shafts 1864 on both sides to perform right-side auxiliary clamping cooperation, and there is a cutting distance between the first pressure strip 1863 and the second pressure strip 1865.

Among them, the first pressure strip 1863 and the second pressure strip 1865 are both arranged in an arc-shaped strip shape, and the arc-shaped surfaces at the bottom of the first pressure strip 1863 and the second pressure strip 1865 are both polished to be smooth and without barbs, ensuring that the first pressure strip 1863 and the second pressure strip 1865 cooperate with each other to achieve efficient abutment and compression, and avoid wear and tear on the outer side of the foam tape; the first pressure strip 1863 is symmetrically inserted with a pin shaft 1864 at the front and rear, and the first pressure strip 1863 is installed relative to the second pressure strip 1865 through the front and rear pin shafts 1864, and the first pressure strip 1863 and the second pressure strip 1865 can achieve a rapid formation of a left and right compression state through the pin shaft 1864.

Please refer to FIG. 5 . The adjustment assembly 187 in this embodiment includes a housing 1871 which is fastened to the middle of the upper end of the connecting strip 181 to realize the protection of the internal parts, a fixed shaft 1872 which is vertically inserted into the middle end of the housing 1871 and fastened to the upper end of the cutting tool 11, so that the fixed shaft 1872 in the vertical state can be matched to realize the efficient vertical upward adjustment, and a tooth block 1873 which is equidistantly fastened to the left side of the fixed shaft 1872 and can be meshed with the transmission, and meshed with the The gear 1874 at the lower left end of the tooth block 1873 is rotatably connected to the inside of the shell 1871, and the worm 1875 is connected to the upper end of the gear 1874. The worm 1875 is laterally rotatably connected to the upper left end of the inside of the shell 1871, and the spiral tooth angle opened on the outside of the worm 1875 is transmission-connected to the tooth angle opened on the outside of the gear 1874. A knob 1876 connected to the left side of the worm 1875 can be manually rotated, and the outside of the knob 1876 is provided with anti-slip grooves.

Further explanation: the tooth block 1873 is vertically equidistantly arranged inside one side of the fixed shaft 1872 relative to the tooth block 1873, and the tooth block 1873 is meshed and connected with the tooth angle set on the outside of the gear 1874 to ensure that the gear 1874 and the tooth block 1873 are stably meshed and connected, thereby achieving efficient meshing and lifting adjustment.

Here’s how it works:

When the fully automatic foam tape cutting device is to be used, a large roll of foam tape can be sleeved onto the outside of the rotating shaft 6, and under the relative cooperation of the connecting tube 17 provided on the right side of the rotating shaft 6, the right side of the rotating shaft 6 can be closed in advance to prevent the small roll of foam tape from falling after cutting. Then, the first motor 5 and the second motor 8 can be operated respectively through the controller 2 provided on the top of the front end of the right side of the bottom plate 1. When the first motor 5 is running, the clamp 4 can be driven to rotate in a circle. In this way, the rotating shaft 6 clamped in the middle of the right side of the clamp 4 will quickly drive the foam tape placed on the outside to rotate quickly, and under the drive of the second motor 8, the screw 9 connected to the output end can be rotated, and when the screw 9 rotates, the screw 9 is connected to the output end. The cutting tool 11 connected with the thread on the outside will cooperate with the lateral guide rod 10 inserted in the upper front and rear ends to realize stable lateral adjustment, so as to flexibly adjust the cutting spacing and position. Then, the first cylinders 13 arranged on the upper ends of the left and right sides of the connecting frame 12 can be driven at the same time, so that the first cylinders 13 on both sides can synchronously push down the slider 7 connected at the bottom. As the sliders 7 on both sides move down, the screws 9 and the guide rods 10 connected to the middle and front and rear sides of the sliders 7 on both sides will move down and drive the cutting tool 11, so that the cutting tool 11 in operation will contact the outer side of the rapidly rotating foam tape, so as to cut the large roll of foam tape into small rolls of foam tape to meet the subsequent packaging and sales needs.

After the cutting is completed, the first motor 5, the second motor 8 and the first cylinder 13 need to be stopped respectively, and then the second cylinder 16 is operated to make the second cylinder 16 pull the movable plate 14 connected to the left side to the right, so that the movable plate 14 can move to the right along the guide rail 15 connected to the bottom to release the combined connection between the connecting tube 17 and the rotating shaft 6 at the upper end of the left side, thereby, the right side of the rotating shaft 6 can be opened, and the staff can remove the small roll of foam tape that has been cut from the outside of the rotating shaft 6, and automatically cut another large roll of foam tape;

When the cutting tool 11 moves up and down for cutting, in order to avoid the cutting tool 11 from adhering to the side of the foam tape and causing the pulling damage of the tape, an auxiliary pressing device 18 is provided on the outside of the cutting tool 11, that is, when the cutting tool 11 moves down for cutting, the pressing component 186 provided inside the auxiliary pressing device 18 can be preliminarily made to abut against the outside of the foam tape, that is, the smooth arc surface at the bottom of the first pressure strip 1863 and the second pressure strip 1865 is in contact with the outside of the foam tape, and then, as the cutting tool 11 moves down, the side strips 182 provided at the lower ends of the front and rear sides of the connecting strip 181 will squeeze the compression spring 185 on the outside of the connecting rod 184 that is plugged in at the bottom, so that the compression spring 185 is compressed as a whole, thereby improving the first The first pressure strip 1863 and the second pressure strip 1865 are against the outer side of the foam tape to stabilize the abutment, and the downward-moving cutting tool 11 can pass through the cutting distance between the first pressure strip 1863 and the second pressure strip 1865 to stably realize the small roll cutting activity of the foam tape. When the cutting is completed and the cutting tool 11 is moved up and reset, the first pressure strip 1863 and the second pressure strip 1865 can still be against the left and right foam tapes stably under the elastic force of the compression springs 185 on both sides, so that the side of the foam tape is not easy to adhere to the outer side of the cutting tool 11, and the occurrence of the pulling and damage of the foam tape is reduced, thereby achieving the advantages of cutting auxiliary pressing and reducing the adhesion and pulling of the foam tape and the cutting tool 11.

At the same time, an adjustment component 187 is provided at the middle of the upper end of the connecting strip 181 to meet the need for the relative compression of larger foam tapes. That is, when the height adjustment is required, the knob 1876 connected to the left side of the worm 1875 can be rotated to make the worm 1875 rotate stably as a whole. When the worm 1875 rotates, the gear 1874 meshing with the spiral tooth angle on the outer side of the worm 1875 will realize clockwise rotation. The clockwise rotating gear 1874 will mesh with the tooth block 1873 equidistantly arranged inside the left side of the fixed shaft 1872 to realize the housing 1871. Driven by the overall upward movement, and because the shell 1871 is tightly connected to the middle part of the upper end of the connecting strip 181, the connecting strip 181 can be stably moved vertically upward along the fixed axis 1872, so as to realize the flexible adjustment of the clamping position of the clamping assembly 186 set at the bottom, to meet the needs of auxiliary cutting and clamping of larger-sized foam tapes. At the same time, the limiting strips 183 set inside the side strips 182 on both sides and the sliding connection between the front and back of the cutting tool 11 can ensure the stability of the overall upward adjustment state of the clamping assembly 186, thereby achieving the advantages of flexible adjustment of the clamping position to meet the needs of using larger-sized foam tapes.

The utility model provides a fully automatic cutting device for foam tape, which is provided with an auxiliary pressing device 18, that is, before the foam tape is cut, the first pressing strip 1863 and the second pressing strip 1865 provided inside the pressing component 186 can be stably pressed against the foam tape under the elastic cooperation of the compression spring 185 provided on the outer side of the connecting rod 184, so as to ensure that when the cutting tool 11 is cut and removed, it is not easy to cause adhesion and pulling damage to the tape, thereby achieving the cutting auxiliary pressing cooperation and reducing the foam tape. In order to avoid the phenomenon of adhesion and pulling with the cutting tool 11, an adjustment component 187 is provided, that is, under the transmission of the worm 1875 and the gear 1874, the gear 1874 can be moved along the equidistant tooth block 1873 inside the fixed axis 1872 to realize the upward adjustment of the connecting strip 181 as a whole. In this way, the clamping component 186 provided at the bottom of the connecting strip 181 can be adjusted accordingly to change the clamping position, thereby achieving the advantage of flexible adjustment of the clamping position to meet the needs of using larger-sized foam tapes.

The above description is only a preferred example of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims (8)

1. The utility model provides a full-automatic cutting device of bubble cotton sticky tape, includes bottom plate (1) and cuts cutter (11), controller (2) are installed to bottom plate (1) right side upper end, bottom plate (1) left side fastening connection has backup pad (3), backup pad (3) upper end inboard meets has anchor clamps (4), and anchor clamps (4) left side meets with first motor (5), anchor clamps (4) right side is connected with pivot (6), slider (7) are built-in backup pad (3) upper end, and slider (7) left side meets with second motor (8);

The method is characterized in that: the automatic cutting device is characterized by further comprising an auxiliary pressing device (18) arranged on the outer side of the cutting tool (11), wherein the auxiliary pressing device (18) comprises a connecting strip (181) arranged on the upper end of the cutting tool (11), side strips (182) arranged on two sides of the lower end of the connecting strip (181), a limiting strip (183) fixedly arranged on the inner side of the side strips (182), a connecting rod (184) spliced at the lower end of the side strips (182), a pressure spring (185) arranged on the outer side of the connecting rod (184), a pressing assembly (186) connected to the bottom of the connecting rod (184) and an adjusting assembly (187) arranged in the middle of the connecting strip (181).

2. The full-automatic cutting device of foam tape according to claim 1, wherein: the middle part and the front and back both sides of second motor (8) are equipped with screw rod (9) and guide arm (10) respectively, and screw rod (9) and guide arm (10) outside meet with cut cutter (11) upper end, backup pad (3) top fastening connection has link (12), first cylinder (13) are all installed to link (12) both sides upper end, and both sides first cylinder (13) lower extreme all meets with slider (7), link (12) right side lower extreme is equipped with movable plate (14) relatively, and movable plate (14) bottom and guide rail (15) sliding connection, guide rail (15) upper end is equipped with second cylinder (16), and second cylinder (16) left side meets with movable plate (14), movable plate (14) upper end rotation is connected with connecting cylinder (17), and connecting cylinder (17) left side is pegged graft with pivot (6).

3. The full-automatic cutting device of foam tape according to claim 1, wherein: the compressing assembly (186) comprises a connecting plate (1861) fastened at the lower end of the connecting rod (184), a connecting shaft (1862) inserted in the middle of the connecting plate (1861), a first pressing strip (1863) connected to the lower end of the connecting shaft (1862), pin shafts (1864) inserted at two sides of the outer end of the first pressing strip (1863) and a second pressing strip (1865) connected with the outer side of the pin shafts (1864).

4. The full-automatic cutting device of foam tape according to claim 1, wherein: the adjusting component (187) comprises a shell (1871) fastened in the middle of the connecting strip (181), a fixed shaft (1872) inserted in the shell (1871) and fastened and connected with the upper end of the cutting tool (11), a tooth block (1873) equidistantly arranged in the fixed shaft (1872), a gear (1874) meshed with the outer side of the tooth block (1873) and rotationally connected with the interior of the shell (1871), a worm (1875) connected with the upper end of the gear (1874) and a rotating button (1876) connected with the outer end of the worm (1875).

5. The full-automatic cutting device of foam tape according to claim 1, wherein: the side bars (182) are symmetrically arranged in front and back along the lower ends of the connecting bars (181), and the side bars (182) on two sides are slidably connected with the outer sides of the two ends of the cutting tool (11) through limiting bars (183) arranged on the inner sides.

6. A full-automatic cutting device for foam tapes according to claim 3, characterized in that: the first pressing strip (1863) and the second pressing strip (1865) are in arc-shaped strip arrangement, and arc surfaces at the bottoms of the first pressing strip (1863) and the second pressing strip (1865) are smooth and barb-free polishing arrangement.

7. A full-automatic cutting device for foam tapes according to claim 3, characterized in that: the first pressing strip (1863) is symmetrically inserted with a pin shaft (1864) in front and back, and the first pressing strip (1863) and the second pressing strip (1865) are oppositely arranged through the pin shaft (1864) arranged in front and back.

8. The full-automatic cutting device for foam tapes according to claim 4, wherein: the tooth blocks (1873) are vertically arranged at equal intervals along the fixed shaft (1872) opposite to the inside of one side of the tooth block (1873), and the tooth blocks (1873) are in matched meshing connection with tooth angles arranged on the outer side of the gear (1874).