Suction type fixing mechanism of carpet cutting device
The suction-type fixing mechanism formed by the suction cup solves the problem of carpet shifting during carpet cutting, achieving stable carpet fixing and efficient cutting.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TONGXIANG PUSHANG HOME FURNISHING CO LTD
- Filing Date
- 2025-03-27
- Publication Date
- 2026-04-14
AI Technical Summary
Existing carpet cutting devices are prone to carpet shifting during the cutting process and lack effective fixation.
It adopts a suction-type fixing mechanism, which uses suction cups to create negative pressure to fix the carpet. The airflow is controlled by a three-position four-way valve to achieve electric switching of the carpet, so as to ensure that the carpet does not shift during the stable cutting process.
It effectively secures the carpet, ensuring it doesn't shift during cutting and improving cutting accuracy and efficiency.
Smart Images
Figure CN224116264U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a carpet cutting device, and more particularly to a suction-type fixing mechanism for a carpet cutting device. Background Technology
[0002] Carpet cutting devices generally include an unwinding mechanism for holding the carpet roll, a conveyor belt, and a cutting mechanism. The upper part of the conveyor belt is horizontal, and the carpet rolled up from the roll is placed on the upper part of the conveyor belt. The carpet is unwound from the roll, and the moving conveyor belt, through friction, moves the carpet horizontally, bringing it into the cutting position. The cutting mechanism cuts the carpet and removes the cut carpet. Existing carpet cutting devices still have shortcomings, such as the lack of fixation after the carpet enters the cutting position, making it prone to shifting during the cutting process. Utility Model Content
[0003] This application provides a suction-type fixing mechanism for a carpet cutting device, which can solve the problems mentioned in the background art.
[0004] This application provides a suction-type fixing mechanism for a carpet cutting device, comprising:
[0005] Installation Department;
[0006] Multiple suction cups are connected to the mounting section;
[0007] The air passage has multiple first ports connected in sequence to multiple suction cups, and a second port connecting all the first ports;
[0008] A suction pump has an air intake port and two interconnected exhaust ports.
[0009] The three-position four-way valve has a first port connected to a second pipe, a second port connected to the outside, a third port connected to an intake port, and a fourth port connected to one of the exhaust ports; it can switch between the following three states: a ready state in which only the second port is connected to the third port; a suction state in which only the first port is connected to the third port; and a backflush state in which the first port is connected to the fourth port and the second port is connected to the third port.
[0010] In some embodiments, the mounting portion includes: a fixed portion, two movable portions that move horizontally relative to the fixed portion, and an adjustment mechanism for adjusting the distance between the two movable portions; all or part of the suction cups are connected to the two movable portions at the connection position of the mounting portion.
[0011] In some embodiments, the first interface corresponds to the position between the third and fourth interfaces, close to the fourth interface; the third interface corresponds to the position between the first and second interfaces, close to the second interface; the valve core has a first plug and a second plug; the first plug acts on the second and third interfaces, and the second plug acts on the first and fourth interfaces.
[0012] In some embodiments, the three-position four-way valve is driven by an electric cylinder.
[0013] In some embodiments, the adjustment mechanism is a bidirectional lead screw module.
[0014] In some embodiments, the exhaust port not connected to the fourth interface is also provided with a backstop.
[0015] In summary, this application provides a suction-type fixing mechanism for a carpet cutting device, including a mounting part, multiple suction cups, an air passage, a suction pump, and a three-position four-way valve. During the conveyor belt's movement carrying the carpet, the three-position four-way valve is in a ready state, allowing outside air to enter the suction pump through the connected second and third ports and exit through the exhaust port not connected to the fourth port. When the carpet reaches the cutting position, the three-position four-way valve switches to suction mode, the suction cups draw in air to create negative pressure, and the air enters the suction pump through the connected first and third ports along the air passage, exiting through the exhaust port not connected to the fourth port. After the carpet is cut, the three-position four-way valve switches to backflushing mode, allowing outside air to enter the suction pump through the connected second and third ports and then enter the air passage through the connected first and fourth ports, rapidly restoring the negative pressure. After the negative pressure is restored, excess air can overflow through the exhaust port not connected to the fourth port. The beneficial effect is that it fixes the carpet, making it less prone to shifting during the cutting process. Attached Figure Description
[0016] To better illustrate the technical solutions in the embodiments of this application or the background art, the accompanying drawings used in the embodiments of this application or the background art will be described below.
[0017] Figure 1 This is a top view of this application;
[0018] Figure 2 A partial cross-sectional view showing the connection between the suction pump and the three-position four-way valve;
[0019] Figure 3 Three sectional views of the valve body and valve core of a three-position four-way valve in three states;
[0020] Figure 4 Top view showing another mounting section and suction cup setup;
[0021] Figure 5 This is a schematic diagram of the anti-reverse circuit.
[0022] In the picture,
[0023] 1. Mounting section; 1-1. Frame; 1-2. First mounting plate; 1-3. Second mounting plate; 1-4. Bidirectional lead screw module; 1-4a. Synchronous belt;
[0024] 2. Suction cup;
[0025] 3. Air passage; 3a. Second port; 3b. Cable chain;
[0026] 4. Suction pump; 4a. Inlet; 4b. Outlet;
[0027] 5. Three-position four-way valve; 5-1. Valve body; 5-1a. First port; 5-1b. Second port; 5-1c. Third port; 5-1d. Fourth port; 5-2. Valve core; 5-2a. First plug; 5-2b. Second plug; 5-3. Electric cylinder;
[0028] 6. Backstop. Specific Implementation
[0029] The following description is provided in conjunction with the accompanying drawings, which are for illustrative purposes only and not strictly to scale. Unless otherwise defined, the technical or scientific terms used in this disclosure should be understood in their ordinary sense by one of ordinary skill in the art to which this disclosure pertains. The terms "first," "second," and similar terms used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships, and these relative positional relationships may change accordingly when the absolute position of the described object changes. Unless otherwise specified, the embodiments in this application can be combined with each other.
[0030] Please see Figure 1 A suction-type fixing mechanism for a carpet cutting device includes an installation part 1, multiple suction cups 2, an air passage 3, a suction pump 4, and a three-position four-way valve 5.
[0031] Mounting section 1 is fixedly connected to the equipment frame of the carpet cutting device; more specifically, the conveyor belt of the carpet cutting device surrounds mounting section 1.
[0032] Multiple suction cups 2 are connected to the mounting part 1. That is, the upper part of the conveyor belt is horizontal, and the conveyor belt material is breathable. The carpet is placed on the upper part of the conveyor belt, and the movement of the conveyor belt moves the carpet horizontally, allowing the carpet to enter the cutting position. The suction cups 2 draw in air to create negative pressure, keeping the carpet fixed to the conveyor belt, thus keeping the carpet stable during the cutting process.
[0033] The air passage 3 has multiple first ports connected sequentially to multiple suction cups 2, and a second port 3a connecting all the first ports. More specifically, the air passage 3 can be constructed using components such as hoses, elbows, and tees.
[0034] In some embodiments, the connection between the suction cup 2 and the mounting part 1 can be a fixed connection, that is, the position of the suction cup 2 relative to the mounting part 1 is fixed. More specifically, the mounting part 1 may include a frame 1-1 and a plurality of first mounting plates 1-2; the frame 1-1 is constructed of aluminum profiles and is used to be fixedly connected to the equipment frame of the carpet cutting device; the first mounting plates 1-2 are fixedly connected to the frame 1-1 and are used for connecting the suction cup 2.
[0035] Correspondingly, for air path 3, for each first mounting plate 1-2, a branch path is built using components such as hoses, elbows, and tees to connect all suction cups 2 on the first mounting plate 1-2, and all branch paths are connected together to form air path 3.
[0036] Please see Figure 4 In some embodiments, the mounting part 1 includes a fixed part, two movable parts, and an adjustment mechanism.
[0037] The fixing part is used for fixed connection with the equipment frame of the carpet cutting device. More specifically, frame 1-1 is the fixing part.
[0038] The two moving parts move horizontally relative to the fixed part. More specifically, the first mounting plate 1-2 consists of two moving parts, and a linear guide rail can be provided between the moving parts and the fixed part.
[0039] The adjustment mechanism is used to adjust the distance between the two moving parts. Regarding the connection position of the suction cups 2 at the mounting part 1, it can be: all suction cups 2 are divided into two groups and connected to the two moving parts; or it can be: some suction cups 2 are divided into two groups and connected to the two moving parts. The mounting part 1, in addition to the frame 1-1 and the two first mounting plates 1-2, also includes a second mounting plate 1-3. The second mounting plate 1-3 is fixedly connected to the frame 1-1 and is located between the two first mounting plates 1-2. The remaining suction cups 2 are connected to the second mounting plate 1-3.
[0040] Accordingly, for air path 3, a branch path is constructed using hoses, elbows, tees, and other components to connect all suction cups 2 on the two first mounting plates 1-2. This branch path is guided by the cable chain 3b and does not affect the movement of the first mounting plates 1-2. If there is a second mounting plate 1-3, a branch path is constructed using hoses, elbows, tees, and other components to connect all suction cups 2 on the second mounting plate 1-3. All branch paths are then connected to form air path 3.
[0041] Please see Figure 4In some embodiments, the adjustment mechanism is further described as a bidirectional lead screw module 1-4. More specifically, the bidirectional lead screw module 1-4 consists of two sets, with the two bidirectional lead screws being driven by a synchronous belt 1-4a. One of the bidirectional lead screws extends out of the equipment frame of the carpet cutting device, and a handwheel is fixedly connected to the extended part.
[0042] By adjusting the spacing between the two moving parts, it can adapt to carpets of different widths.
[0043] Please see Figure 2 The suction pump 4 has an air intake 4a and two interconnected exhaust ports 4b.
[0044] Please see Figure 2 and Figure 3 The three-position four-way valve 5 has a first port 5-1a, a second port 5-1b, a third port 5-1c, and a fourth port 5-1d. The first port 5-1a is connected to the second port 3a. The second port 5-1b is connected to the outside environment; more specifically, an air filter can be fixedly connected to the second port 5-1b. The fourth port 5-1d is connected to one of the exhaust ports 4b.
[0045] The three-position four-way valve 5 switches between the following three states: ready state, only the second port 5-1b is connected to the third port 5-1c, that is, the first port 5-1a and the fourth port 5-1d are both blocked; suction state, only the first port 5-1a is connected to the third port 5-1c, that is, the second port 5-1b and the fourth port 5-1d are both blocked; backflush state, the first port 5-1a is connected to the fourth port 5-1d and the second port 5-1b is connected to the third port 5-1c.
[0046] As the conveyor belt moves the carpet horizontally, the three-position four-way valve 5 is in the ready state. At this time, the suction pump 4 remains running and has no effect on the air circuit 3. Outside air enters the suction pump 4 through the connected second port 5-1b and third port 5-1c and is discharged through the exhaust port 4b that is not connected to the fourth port 5-1d.
[0047] The carpet enters the cutting position, and the three-position four-way valve 5 switches to the suction state. At this time, the suction pump 4 remains running, and the suction cup 2 draws in air to form a negative pressure. The air enters the suction pump 4 through the air passage 3 from the first interface 5-1a and the third interface 5-1c, and is discharged from the exhaust port 4b that is not connected to the fourth interface 5-1d.
[0048] After the carpet is cut, the three-position four-way valve 5 switches to backflushing mode. At this time, the suction pump 4 remains running, and outside air enters the suction pump 4 through the connected second port 5-1b and third port 5-1c, and enters the air passage 3 through the connected first port 5-1a and fourth port 5-1d, allowing the negative pressure to be quickly restored. After the negative pressure is restored, the cut carpet can be easily removed, and excess air can overflow from the exhaust port 4b not connected to the fourth port 5-1d; that is, the exhaust port 4b not connected to the fourth port 5-1d is used for air overflow.
[0049] After the cut carpet is removed, the three-position four-way valve 5 switches to the ready state, and the conveyor belt moves the carpet horizontally, and so on.
[0050] Please see Figure 3 In some embodiments, the first interface 5-1a corresponds to the position between the third interface 5-1c and the fourth interface 5-1d, closer to the fourth interface 5-1d. The third interface 5-1c corresponds to the position between the first interface 5-1a and the second interface 5-1b, closer to the second interface 5-1b. The valve core 5-2 has a first plug 5-2a and a second plug 5-2b. The first plug 5-2a acts on the second interface 5-1b and the third interface 5-1c, while the second plug 5-2b acts on the first interface 5-1a and the fourth interface 5-1d.
[0051] The three-position four-way valve 5 is switched between three states by moving the valve core 5-2.
[0052] Please see Figure 2 In some embodiments, the three-position four-way valve 5 is further driven by an electric cylinder 5-3, more specifically, a planetary roller screw electric cylinder, which provides high precision in linear displacement. The cylinder body of the electric cylinder 5-3 is fixedly connected to the valve body 5-1 of the three-position four-way valve 5, and the telescopic rod is fixedly connected to the valve core 5-2.
[0053] Please see Figure 5 In some embodiments, the exhaust port 4b, which is not connected to the fourth interface 5-1d, is also provided with a check valve 6. Air can be discharged normally from the exhaust port 4b, and the check valve 6 prevents outside air from flowing back into the exhaust port 4b during the switching of the three-position four-way valve 5 between the three states.
Claims
1. A suction-type fixing mechanism for a carpet cutting device, characterized in that, include: Installation section (1); Multiple suction cups (2) are connected to the mounting part (1); The air passage (3) has multiple first ports connected in sequence to multiple suction cups (2) and a second port (3a) connecting all the first ports; The suction pump (4) has an air intake (4a) and two interconnected exhaust ports (4b); The three-position four-way valve (5) has a first port (5-1a) connected to a second port (3a), a second port (5-1b) connected to the outside, a third port (5-1c) connected to an intake port (4a), and a fourth port (5-1d) connected to one of the exhaust ports (4b); and can switch between the following three states: a ready state in which only the second port (5-1b) is connected to the third port (5-1c); a suction state in which only the first port (5-1a) is connected to the third port (5-1c); and a backflush state in which the first port (5-1a) is connected to the fourth port (5-1d) and the second port (5-1b) is connected to the third port (5-1c).
2. The suction-type fixing mechanism of a carpet cutting device according to claim 1, characterized in that, The mounting part (1) includes: a fixed part, two movable parts that move horizontally relative to the fixed part, and an adjustment mechanism for adjusting the distance between the two movable parts; all or part of the suction cup (2) are two movable parts at the connection position of the mounting part (1).
3. The suction-type fixing mechanism of the carpet cutting device according to claim 1, characterized in that, The first port (5-1a) corresponds to the position between the third port (5-1c) and the fourth port (5-1d) near the fourth port (5-1d); the third port (5-1c) corresponds to the position between the first port (5-1a) and the second port (5-1b) near the second port (5-1b); the valve core (5-2) has a first plug (5-2a) and a second plug (5-2b); the first plug (5-2a) acts on the second port (5-1b) and the third port (5-1c), and the second plug (5-2b) acts on the first port (5-1a) and the fourth port (5-1d).
4. The suction-type fixing mechanism of a carpet cutting device according to claim 2, characterized in that, The three-position four-way valve (5) is driven by an electric cylinder (5-3).
5. The suction-type fixing mechanism of a carpet cutting device according to claim 2, characterized in that, The adjustment mechanism is a bidirectional lead screw module (1-4).
6. The suction-type fixing mechanism of a carpet cutting device according to claim 1, characterized in that, The exhaust port (4b) that is not connected to the fourth interface (5-1d) is also equipped with a backstop (6).