A sponge sheet cutting machine and its cutting production line

Abstract

The present invention relates to a new type of sponge sheet cutting machine, which includes a conveying support on which a conveyor belt is installed; a cutting gantry that straddles both sides of the conveying support; a cutting unit installed on the cutting gantry, the cutting unit includes an annular knife belt, and both sides of the annular knife belt are installed on the cutting gantry through knife belt mounting seats. The knife belt mounting seats are driven by a lifting mechanism to drive the annular knife belt to move up and down, and the annular knife belt is driven by a flipping mechanism to flip; it also relates to a sponge cutting production line. The advantages of the present invention are as follows: the annular knife belt is flipped within the range of 0-90° through the cooperation of the flipping mechanism, and by adjusting different flipping angles of the annular knife belt, simultaneous two-knife cutting of sponges with different thicknesses is achieved, greatly improving the work efficiency and enhancing the utilization rate of the annular knife belt.

Description

Technical Field

[0001] The present invention relates to the field of sponge cutting, and particularly relates to a sponge sheet cutting machine, and also relates to a cutting production line based on the above-mentioned cutting machine. Background Art

[0002] Sponge is a porous material with good water absorption and can be used for cleaning items. It is usually formed by mixing foaming resin, foaming aids and adhesive resin. A foaming machine is a device for manufacturing sponges. Through the stirring action of the foaming machine, air is introduced into the aqueous solution of the foaming agent and evenly dispersed, so that the liquid-phase foaming agent and the introduced air in the gas phase have the largest possible contact surface and react to form bubbles one by one, thus forming a sponge. After the sponge is formed as a whole, it needs to be cut into sheets of different sizes and specifications according to different requirements.

[0003] When cutting the sponge into sheets, it is inevitable to use a sponge cutting machine. At present, most of the cutting tools in the cutting equipment used in the existing market use a ring knife for cutting, and only one sheet can be cut at a time.

[0004] For example, Patent CN203045809U mentions a ring horizontal knife special-shaped sponge cutting machine, which includes a gantry, a conveying workbench, a knife belt wheel set and a ring knife belt. A conveying workbench is arranged below the gantry, and the conveying direction of the conveying workbench is perpendicular to the gantry. A knife belt wheel set for tensioning and driving the ring knife belt is arranged on the gantry. The knife belt wheel set includes four knife belt wheels, and every two knife belt wheels are a group, which are respectively installed on both sides of the gantry. A frame-shaped knife rest that can move vertically is arranged on the gantry. An annular knife belt tensioned and driven by four knife belt wheels is arranged on the knife rest, and a mechanism for twisting the knife belt is fixed on the knife rest.

[0005] When the above-mentioned sponge cutting machine cuts the sponge, it uses the ring knife belt to cut the sponge. During the cutting process, the cutting of the sponge is realized by the high-speed movement of the ring knife belt. In this process, only the ring knife belt that moves to the lower layer position will cut the sponge, while the ring knife belt that moves to the upper layer position at this time does not perform the cutting action. This cutting method can only utilize the cutting of the single-layer ring knife belt on the sponge, that is, only one sponge sheet can be cut from the whole sponge at a time, and the cutting efficiency is not very high. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide a sponge sheet cutting machine with high cutting efficiency, and a sponge cutting production line based on the above-mentioned cutting machine.

[0007] To solve the above technical problem, the technical solution of the present invention is: A sponge sheet cutting machine, the innovation of which lies in: including

[0008] A conveying support, on which a conveyor belt is installed;

[0009] A cutting gantry, which spans both sides of the conveying support;

[0010] A cutting unit installed on the cutting gantry, the cutting unit includes an annular knife belt, both sides of the annular knife belt are installed on the cutting gantry through knife belt mounting seats, the knife belt mounting seats are driven by a lifting mechanism and drive the annular knife belt to move up and down, and the annular knife belt is driven by a flipping mechanism to flip.

[0011] Further, the flipping mechanism is: a knife box is installed on the knife belt mounting seat, a knife belt wheel and a knife twisting seat that cooperate with the annular knife belt are installed in the knife box, the knife belt wheel is driven by a tensioning mechanism to move horizontally and realize the tensioning of the annular knife belt, the knife twisting seat is driven by a knife twisting motor to rotate and realize the rotation of the cutting edge of the annular knife belt, a through hole for the annular knife belt to pass through is also opened at the side end of the knife box, the knife box is connected to the knife belt mounting seat through a flipping shaft, both sides of the flipping shaft are installed on the knife belt mounting seat through the cooperation of bearings and bearing seats, the flipping shaft is fixedly connected to the knife box, the flipping shaft is driven by a flipping motor installed on the knife belt mounting seat to rotate, and drives the knife box to flip, thereby realizing the flipping of the annular knife belt.

[0012] Further, the lifting mechanism is: a pair of lifting guide rails are provided on both sides of the cutting gantry, lifting sliders that cooperate with the lifting guide rails are provided at the side end of the knife belt mounting seat, a pair of lifting chains are also provided between the two lifting guide rails in the same pair, at the same time, sprockets that cooperate with the lifting chains are respectively provided on the upper and lower sides of the cutting gantry, the lifting chains are fixed to the knife belt mounting seat and drive the knife belt mounting seat to move up and down.

[0013] Further, the annular knife belt is a double-edge knife belt.

[0014] A sponge cutting production line based on the above sponge sheet cutter, the innovation point is: it is composed of several cutting gantries arranged side by side in a straight line, and each cutting gantry shares the same conveying unit, and the heights of the cutting units on each cutting gantry are all different.

[0015] Further, the cutting units on each cutting gantry are all located on the same side of the cutting gantry.

[0016] The advantages of the present invention are as follows: The cutting machine of the present invention realizes the flipping of the annular knife belt within the range of 0 - 90° through the cooperation of the flipping mechanism. By adjusting the different flipping angles of the annular knife belt, simultaneous two-knife cutting of sponges with different thicknesses is achieved, greatly improving the working efficiency and enhancing the utilization rate of the annular knife belt.

[0017] For the design of the flipping mechanism, the cooperation of a flipping shaft, a flipping motor, etc. is adopted to realize the flipping of the annular knife belt, ensuring the stable flipping of the annular knife belt and providing a good foundation for the subsequent cutting of the sponge mattress.

[0018] For the design of the lifting mechanism, the common cooperation of components such as lifting guide rails and lifting chains is adopted, thereby realizing the stable movement of the knife belt mounting seat up and down, avoiding adverse phenomena such as deviation during the lifting process of the knife belt mounting seat, and ensuring the stability of cutting.

[0019] The cutting production line of the present invention uses the cooperation of multiple cutting gantries arranged in a straight line and cutting units to cut the passing sponge. The overall sponge can be cut into multiple sponge sheets with various thicknesses with just one pass, without the need for the sponge to move back and forth for cutting, greatly improving the efficiency of sponge cutting.

[0020] Designing the cutting units on the same side of the cutting gantry is for the convenience of subsequent design of parameters such as the conveying distance of the conveyor belt and the horizontal distance between adjacent cutting units. Brief Description of the Drawings

[0021] The present invention will be further described in detail below with reference to the drawings and specific embodiments.

[0022] Figure 1 It is a schematic diagram of the sponge sheet cutting machine of the present invention.

[0023] Figure 2 It is a front view of the sponge sheet cutting machine of the present invention.

[0024] Figure 3 It is a side view of the sponge sheet cutting machine of the present invention.

[0025] Figure 4 It is a top view of the sponge sheet cutting machine of the present invention.

[0026] Figure 5 It is a schematic diagram of the cutting gantry in the present invention.

[0027] Figure 6 It is a schematic diagram of the flipping of the annular knife belt in the present invention.

[0028] Figure 7 It is an internal schematic diagram of the knife box in the present invention.

[0029] Figure 8 Schematic diagram of the tensioning mechanism in the present invention.

[0030] Figure 9 Schematic diagram of the sponge cutting production line in the present invention.

[0031] Figure 10 Top view of the sponge cutting production line in the present invention.

[0032] Figure 11 First structural schematic diagram of the annular knife belt in the present invention.

[0033] Figure 12 Second structural schematic diagram of the annular knife belt in the present invention.

[0034] Figure 13 Third structural schematic diagram of the annular knife belt in the present invention.

[0035] Figure 14 Fourth structural schematic diagram of the annular knife belt in the present invention. Detailed implementation mode

[0036] The following embodiments can enable those skilled in the art to understand the present invention more comprehensively, but do not limit the present invention to the scope of the described embodiments.

[0037] As Figures 1-8 shown, a sponge sheet cutting machine includes

[0038] a conveying support 1, the bottom end of the conveying support 1 is supported by several support feet 12, and a conveyor belt 11 is installed on the conveying support 1, and the conveyor belt 11 is driven by a conveying motor 13 installed on the conveying support 1 to rotate.

[0039] a cutting gantry 2, the cutting gantry 2 straddles both sides of the conveying support 1 in the width direction, and the bottom end of the cutting gantry 2 is supported by a base 21.

[0040] a cutting unit installed on the cutting gantry 2, the cutting unit includes an annular knife belt 3, both sides of the annular knife belt 3 are respectively installed on the cutting gantry 2 through knife belt mounting seats 31. In this embodiment, the annular knife belt 3 is a double-edged knife belt. When cutting the sponge with a double-edged knife belt, compared with a single-edged knife belt, when the sponge needs to be cut back and forth, the double-edged knife belt does not need to twist the knife, while the single-edged knife belt needs to twist the knife. Therefore, using a double-edged knife belt can further improve the cutting efficiency. In addition, there are various different structures for the tooth profile structure of the double-edged knife belt. As Figures 11-14 shown, different tooth profile structures can be selected according to different cutting conditions. Figure 11 is a U-shaped tooth structure. Figure 12 is a triangular tooth structure. Figure 13It is an O-shaped tooth structure. Figure 14 It is a flat tooth structure. For sponges with low processing requirements and low density of cut products, annular knife belts with O-shaped tooth structures and flat tooth structures are usually used. For sponges with high processing requirements and certain density and hardness requirements for cut products, annular knife belts with U-shaped tooth structures are usually used. For sponges with high processing requirements, high density of cut products and difficult to process, annular knife belts with triangular tooth structures are usually used.

[0041] There are two knife belt mounting seats 31 in total, which are respectively installed on both sides of the cutting gantry 2, and the annular knife belt 3 is driven by a rotating motor to rotate.

[0042] The knife belt mounting seat 31 is driven by a lifting mechanism to drive the annular knife belt 3 to move up and down. The lifting mechanism is as follows: on both sides of the cutting gantry 2, there is a pair of parallel distributed lifting guide rails 311, and the lifting guide rails 311 extend along the vertical direction. At the side end of the knife belt mounting seat 31, there are lifting sliders that cooperate with the lifting guide rails 311. Between the two lifting guide rails 311 in the same pair, a pair of lifting chains 312 are also arranged. At the same time, an upper sprocket 313 and a lower sprocket 314 that cooperate with the lifting chains 312 are respectively arranged on the upper and lower sides of the cutting gantry 2. The upper sprocket 313 and the lower sprocket 314 are both movably installed on the cutting gantry 2 through sprocket shafts. Both sides of the sprocket shafts are installed on the cutting gantry 2 through the cooperation of bearings and bearing seats. One side of the lifting chain 312 is fixed to the top end of the knife belt mounting seat 31, and the other side of the lifting chain 312 sequentially bypasses the upper sprocket 313 and the lower sprocket 314 and then is fixed to the bottom end of the knife belt mounting seat 31, thus forming a closed loop. The four upper sprockets 313 on the upper side are connected by a first linkage rod to achieve linkage, and the four lower sprockets 314 on the lower side are connected by a second linkage rod to achieve linkage. Any one of the first linkage rod and the second linkage rod is driven by a lifting motor to rotate, and drives all the upper sprockets 313 and the lower sprockets 314 to rotate. The rotation of the upper sprocket 313 and the lower sprocket 314 will drive the four lifting chains 312 to move up and down synchronously, and the synchronous up and down movement of the lifting chains 312 will drive the two knife belt mounting seats 31 to move up and down synchronously, finally realizing the up and down movement of the annular knife belt 3. For the design of the lifting mechanism, the common cooperation of components such as the lifting guide rails 311 and the lifting chains 312 is adopted, thus realizing the stable movement of the knife belt mounting seat 31 up and down, avoiding bad phenomena such as deviation during the lifting process of the knife belt mounting seat 31, ensuring the stable movement of the annular knife belt 3, and guaranteeing the stability of cutting.

[0043] The annular knife belt 3 is driven to flip by a flipping mechanism. The flipping mechanism is as follows: A knife box 32 is installed on each knife belt mounting seat 31. The knife box 32 is directly fixed on the knife belt mounting seat 31. A knife belt wheel 321 and a knife twisting seat 322 that cooperate with the annular knife belt 3 are installed in the knife box 32.

[0044] Among them, the knife belt wheel 321 is driven to rotate by a rotating motor and drives the annular knife belt 3 to perform a cutting action. And the knife belt wheel 321 is driven by a tensioning mechanism to move horizontally, thereby realizing the tensioning of the annular knife belt 3. As can be seen from the schematic diagram shown, the tensioning mechanism is as follows: A pair of tensioning guide rails 3211 distributed up and down are installed in the knife box 32, and the tensioning guide rails 3211 extend along the horizontal direction. The knife belt wheel 321 is installed on a knife belt wheel fixing seat 3212. Tensioning sliders 3213 that cooperate with the two tensioning guide rails 3211 are respectively installed on the upper and lower sides of the side end of the knife belt wheel fixing seat 3212. The knife belt wheel fixing seat 3212 is driven by a tensioning cylinder 3214 installed in the knife box 32 to move horizontally along the tensioning guide rails 3211. The tensioning cylinder 3214 is fixed in the knife box 32 through a cylinder mounting seat 3215. Figure 8 As shown in the schematic diagram, the tensioning mechanism is as follows: A pair of tensioning guide rails 3211 distributed up and down are installed in the knife box 32, and the tensioning guide rails 3211 extend along the horizontal direction. The knife belt wheel 321 is installed on a knife belt wheel fixing seat 3212. Tensioning sliders 3213 that cooperate with the two tensioning guide rails 3211 are respectively installed on the upper and lower sides of the side end of the knife belt wheel fixing seat 3212. The knife belt wheel fixing seat 3212 is driven by a tensioning cylinder 3214 installed in the knife box 32 to move horizontally along the tensioning guide rails 3211. The tensioning cylinder 3214 is fixed in the knife box 32 through a cylinder mounting seat 3215.

[0045] The knife twisting seat 322 is driven to rotate by a knife twisting motor 323 installed in the knife box 32, thereby realizing the adjustment of the cutting edge of the annular knife belt 3. And the adjustment of the cutting edge of the annular knife belt 3 is to be able to cooperate with the overall flipping of the annular knife belt 3 to ensure the cutting of the passing sponge. The knife twisting seat 322 and the knife twisting motor 323 in this embodiment are the knife twisting mechanisms of the annular knife belt in a conventional ring knife cutting machine, which are prior arts. The specific knife twisting principle will not be elaborated in this embodiment. A through hole for the annular knife belt 3 to pass through is also opened at the side end of the knife box 32. The two sides of the annular knife belt 3 are respectively sleeved on the knife belt wheels 321. After the middle position of the annular knife belt 3 passes through the knife twisting seat 322, it extends out from the through hole of the knife box 32. The two sections of the annular knife belt 3 extending outside the knife box 32 are the upper cutting area and the lower cutting area.

[0046] The knife box 32 is connected to the knife belt mounting seat 31 through a flipping shaft 324. The two sides of the flipping shaft 324 are installed on the knife belt mounting seat 31 through the cooperation of bearings and bearing seats, thereby realizing the rolling cooperation between the flipping shaft 324 and the knife belt mounting seat 31. The flipping shaft 324 is fixedly connected to the knife box 32. The flipping shaft 324 is driven to rotate by a flipping motor 325 installed on the knife belt mounting seat 31, thereby driving the knife box 32 to flip, and further realizing the flipping of the annular knife belt 3. For the design of the flipping mechanism, the cooperation of the flipping shaft 324, the flipping motor 325, etc. is used to realize the flipping of the annular knife belt 3, ensuring the stable flipping of the annular knife belt 3 and providing a good basis for the subsequent cutting of the sponge mattress.

[0047] Working principle: When cutting the sponge, first, according to the thickness requirement of the sponge to be cut, the two flipping motors 325 work to drive the two knife boxes 31 to flip in the same direction at the same time, thereby driving the entire annular knife belt 3 to flip. After flipping in place, the flipping motor 325 stops working, and then the sponge to be cut is transported to the cutting gantry 2 by the conveyor belt 11. The conveyor belt 11 stops conveying, and then the lifting motor works to drive the knife belt mounting seat 31 to move downward, thereby driving the annular knife belt 3 to move downward, and when the annular knife belt 3 moves to the position where the sponge is to be cut, the conveyor belt 11 drives the sponge to move again, and at the same time, the annular The knife belt 3 works to slice the sponge, and the upper and lower layers of the annular knife belt 3 work simultaneously, so as to cut two sponge sheets of the same thickness or different thicknesses at one time. After the cutting is completed, the sponge leaves the annular knife belt 3 as it is transported by the conveyor belt 11. Then, according to the thickness requirement of the sponge to be cut, it is selected whether to drive the annular knife belt 3 to be flipped again by the flipping motor 325. After the annular knife belt 3 is in place, the lifting motor drives the annular knife belt 3 to move downward to a certain position. At the same time, the conveyor belt 11 transports in the reverse direction, and the sponge is cut for the second time by the annular knife belt 3. This process is repeated to complete the cutting of the entire sponge.

[0048] The sponge sheet cutting machine of the present invention realizes the flipping of the annular knife belt within the range of 0-90 degrees through the cooperation of the flipping mechanism, and realizes simultaneous two-knife cutting of sponges of different thicknesses by adjusting different flipping angles of the annular knife belt, which greatly improves the work efficiency and the utilization rate of the annular knife belt.

[0049] The present invention also relates to a sponge cutting production line based on the above-mentioned sponge sheet cutting machine, such as Figure 9 , Figure 10 As shown, the sponge cutting production line is composed of several cutting gantries 2 arranged in parallel in a straight line, and each cutting gantries 2 shares the same conveying unit. The conveying belt in the conveying unit is composed of several strip conveying belts arranged in parallel, and there is a gap between adjacent strip conveying belts. The heights of each cutting unit on each cutting gantries 2 are different. When using this production line for cutting, a double-edged knife belt can also be used for the annular knife belt, which can reduce the time for replacing the knife belt and reduce downtime.

[0050] The cutting units on each cutting gantry 2 are all located on the same side of the cutting gantry 2. Designing the cutting units on the same side of the cutting gantry 2 is to facilitate the subsequent design of parameters such as the conveying distance of the conveyor belt and the horizontal distance between adjacent cutting units.

[0051] When using this sponge cutting production line to cut sponges, first adjust the height of the cutting units on each cutting gantry 2 and the flipping angle of the corresponding annular knife belt 3 according to the thickness of the sponge to be cut into sheets. Then, the sponge to be cut is conveyed by the conveyor belt 11 and sequentially passes through the cutting units of each cutting gantry 2, and the corresponding annular knife belts 3 are used to sequentially cut the sponge.

[0052] With this cutting production line, multiple cutting gantries arranged in a straight line cooperate with the cutting units to cut the passing sponges. The whole sponge can be cut into multiple sponge sheets of various thicknesses with just one pass, without the need for the sponge to move back and forth for cutting, greatly improving the efficiency of sponge cutting.

[0053] Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sponge sheet cutting machine, characterized in that: including a conveying unit, the conveying unit includes a conveying bracket, and a conveyor belt is installed on the conveying bracket; a cutting gantry, the cutting gantry straddles both sides of the conveying bracket; a cutting unit installed on the cutting gantry, the cutting unit includes an annular knife belt, both sides of the annular knife belt are installed on the cutting gantry through knife belt mounting seats, the knife belt mounting seats are driven by a lifting mechanism and drive the annular knife belt to move up and down, and the annular knife belt is driven by a flipping mechanism to flip; The flipping mechanism is: a knife box is installed on the knife belt mounting seat, a knife belt wheel and a knife twisting seat that cooperate with the annular knife belt are installed in the knife box, the knife belt wheel is driven by a tensioning mechanism to move horizontally and realize the tensioning of the annular knife belt, the knife twisting seat is driven by a knife twisting motor to rotate and realize the rotation of the cutting edge of the annular knife belt, a through hole for the annular knife belt to pass through is also opened at the side end of the knife box, the knife box is connected to the knife belt mounting seat through a flipping shaft, both sides of the flipping shaft are installed on the knife belt mounting seat through the cooperation of bearings and bearing seats, the flipping shaft is fixedly connected to the knife box, the flipping shaft is driven by a flipping motor installed on the knife belt mounting seat to rotate, and drives the knife box to flip, thereby realizing the flipping of the annular knife belt; the annular knife belt is a double-edge knife belt; the flipping of the annular knife belt within the range of 0-90° is realized through the cooperation of the flipping mechanism; When cutting the sponge, first, according to the thickness requirement of the sponge to be cut, two flipping motors work to drive the two knife boxes to flip in the same direction at the same time, thereby driving the entire annular knife belt to flip. After flipping in place, the flipping motors stop working. Then, the sponge to be cut is conveyed by the conveyor belt to the cutting gantry, the conveyor belt stops conveying, and then the lifting mechanism works to drive the knife belt mounting seat to move downward, thereby driving the annular knife belt to move downward. When the annular knife belt moves to the position where the sponge is to be cut, the conveyor belt drives the sponge to move again, and at the same time the annular knife belt works to slice the sponge. By the simultaneous work of the upper and lower layers of the annular knife belt, two sponge sheets with the same thickness or different thicknesses can be cut out at one time. After cutting is completed, with the conveying of the conveyor belt, the sponge leaves the annular knife belt. Then, according to the thickness requirement of the sponge to be cut, it is selected whether to drive the annular knife belt to flip again through the flipping motor. After the annular knife belt is in place, the lifting mechanism drives the annular knife belt to move downward by a certain position. At the same time, the conveyor belt conveys in the reverse direction, and the sponge is sent through the annular knife belt again for the second cutting. This is repeated to complete the cutting of the entire sponge.

2. The sponge sheet cutting machine according to claim 1, wherein: The lifting mechanism is: a pair of lifting guide rails are provided on both sides of the cutting gantry, lifting sliders that cooperate with the lifting guide rails are provided at the side end of the knife belt mounting seat, a pair of lifting chains are also provided between the two lifting guide rails in the same pair, and at the upper and lower sides of the cutting gantry, sprockets that cooperate with the lifting chains are respectively provided. The lifting chains are fixed to the knife belt mounting seat and drive the knife belt mounting seat to move up and down.

3. A sponge cutting production line for the sponge sheet cutter according to claims 1-2, characterized in that: It is composed of several cutting gantries arranged side by side in a straight line, and each cutting gantry shares the same conveying unit, and the heights of the cutting units on each cutting gantry are all different.

4. The sponge cutting production line according to claim 3, wherein: The cutting units on each cutting gantry are all located on the same side of the cutting gantry.

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