Adjustable counterweight type compression roller mechanism

Abstract

The utility model relates to the technical field of compression roller production equipment, in particular to an adjustable counter weight type compression roller mechanism which comprises a rotating frame and a dough pressing roller rotationally connected with one end of the rotating frame, the rotating frame comprises rotating rods which are connected side by side in parallel, and a counter weight and an adjusting assembly are installed at the other end of the rotating frame. The balancing weight is slidably connected with the rotating frame, and the adjusting assembly drives the balancing weight to be close to or away from the rotating frame. A rotating shaft part used for being rotationally connected with an external rack is arranged between the two ends of the rotating frame. Through cooperation of the balancing weight and the adjusting assembly, an air cylinder or a hydraulic cylinder is not needed to drive the rotating frame to swing and apply pressure, the pressure applied by the noodle pressing roller can be controlled to be 500 N or below, and when the pressure changes or exceeds the pressure, the adjusting assembly drives the balancing weight to move so that the pressure can be stabilized to be 500 N or below. The dough pressing roller can exert small pressure on the surface of the aluminum coil, and the pressure is kept stable.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure roller production equipment, and more specifically, to an adjustable counterweight type pressure roller mechanism. Background Art

[0002] During the production process of aluminum coils, a certain amount of pressure needs to be applied to their surface for transportation. However, if the pressure is too high, the surface of the aluminum coil will be damaged. Figure 1 As shown, both methods apply pressure to the surface pressure rollers by driving the rotating frame with hydraulic or pneumatic cylinders. Auxiliary equipment requires hydraulic and pneumatic stations, respectively. To stabilize the pressure, the pneumatic station also requires an air tank. Furthermore, due to resistance from sealing rings and other factors, the actual output pressure of these two methods is high, resulting in relatively high surface pressure on the pressure rollers. Generally, the pressure of the hydraulic cylinder exceeds that of the pneumatic cylinder, and the pneumatic cylinder pressure is greater than 500N. Not only is the equipment complex and investment costly, but there are also many uncontrollable factors, often leading to unstable surface pressure due to problems such as poor sealing. Furthermore, this method makes it difficult to apply small surface pressures less than 500N. If the surface pressure roller is directed downward, the surface pressure on the aluminum coil is not only exerted by the pneumatic cylinder, but also by the weight of the surface pressure roller. Furthermore, gravity varies with the angle of the support arm, causing the surface pressure to far exceed 500N, ultimately affecting the surface quality of the aluminum coil and causing wrinkling and foil sticking during the slitting process. Utility Model Content

[0003] The purpose of the utility model is to overcome the deficiency of the pressure roller mechanism in the prior art that it cannot apply stable and small pressure to the surface of the aluminum coil, and to provide an adjustable counterweight pressure roller mechanism that can apply smaller pressure to the surface of the aluminum coil and the pressure is more stable.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0005] An adjustable counterweight-type pressing roller mechanism is provided, comprising a rotating frame and a pressing roller rotatably connected to one end of the rotating frame, the rotating frame comprising rotating rods connected in parallel, a counterweight block and an adjustment component are installed on the other end of the rotating frame, the counterweight block is slidably connected to the rotating frame, and the adjustment component drives the counterweight block to move closer to or away from the rotating frame; a rotating shaft portion for rotatably connecting to an external frame is provided between the two ends of the rotating frame.

[0006] In the above-described technical solution, the counterweight and the dough roller are located at either end of the rotating shaft. Counterweights of varying weights are installed depending on the required surface pressure of the aluminum coil. According to the principle of leverage, changes in the weight of the counterweight affect the pressure applied by the dough roller to the aluminum coil. Because there is no need for a pneumatic or hydraulic cylinder to change the swing amplitude of the rotating rod to alter the pressure applied by the dough roller, the lightweight and adjustable counterweight changes the pressure applied by the pressure roller, thereby enabling a smaller pressure to be applied to the surface of the aluminum coil. Furthermore, depending on the thickness of the aluminum coil being produced, the pressure applied by the dough roller will also vary due to changes in the angle of the rotating frame. In this case, the position of the counterweight can be adjusted by adjusting the assembly. According to the principle of leverage, the distance between the counterweight and the rotating shaft changes, and the pressure applied by the dough roller can be adjusted accordingly. This allows the pressure applied by the dough roller to remain constant or below 500N even if the thickness of the aluminum coil changes, effectively maintaining a stable pressure.

[0007] Furthermore, the adjustment assembly includes a linear drive member, the output end of which is connected to the end of the rotating frame, and the fixed end of which is connected to the counterweight. When the pressure of the counterweight needs to be changed, the linear drive member is activated, and the linear drive member and the counterweight are moved away from or closer to the rotating frame.

[0008] Furthermore, two sets of counterweights and adjustment assemblies are provided, one connected to the end of the rotating rod away from the dough pressing roller; the output end of the linear drive element is connected to the end of the rotating rod. Normally, the adjustment assemblies and counterweights on the two rotating rods maintain consistent movement while changing distance. However, providing two sets of counterweights and adjustment assemblies allows for independent pressure adjustment if the pressure applied at both ends of the dough pressing roller varies due to inconsistent wear.

[0009] Furthermore, the linear drive member is an electric push rod. The electric push rod has a light weight, and even with the weight of the counterweight, the pressure applied by the dough pressing roller will not exceed 500N.

[0010] Furthermore, the adjustment assembly further includes a stroke sensing assembly for sensing the travel distance of the counterweight. By sensing the travel of the counterweight through the stroke sensing assembly, the lever arm distance between the counterweight and the rotating shaft can be determined. By recording different lever arm distances, during adjustment, once the stroke sensing assembly senses a certain distance that meets the requirement, the linear drive member can be stopped, thereby enabling more accurate adjustment of the counterweight's travel distance.

[0011] Furthermore, the travel sensing assembly includes a displacement sensor and a sensing plate; the displacement sensor is mounted on the counterweight, and the sensing plate is mounted on the rotating rod, or the displacement sensor is mounted on the rotating rod, and the sensing plate is mounted on the counterweight. The displacement sensor can be an infrared sensor or an ultrasonic sensor, and determines the travel distance of the counterweight by sensing the distance from the sensing plate.

[0012] Furthermore, a sleeve is provided on the end surface of the counterweight connected to the linear drive member, the other end of the sleeve being sleeved onto the outer surface of the rotating rod, with the axis of the sleeve being parallel to the axis of the rotating rod. The sleeve can restrict the counterweight and the rotating rod, and the sleeve can only slide along the surface of the rotating rod, thereby better limiting the movement of the counterweight.

[0013] Furthermore, the displacement sensor is mounted on the sleeve, and the sensing plate is mounted on the rotating rod. The axis of the sleeve is parallel to the axis of the rotating rod, and the displacement sensor moves with the sleeve, that is, the displacement sensor can move parallel to the axis of the rotating rod. This allows the line connecting the sensing end of the displacement sensor and the sensing plate to be parallel to the axis of the rotating rod. The distance moved by the displacement sensor is completely equivalent to the distance moved by the counterweight, resulting in more accurate measurement by the displacement sensor and easier conversion of the displacement sensor's movement distance into pressure changes.

[0014] Furthermore, the rotating frame is equipped with a pressure sensor for measuring the pressure of the dough pressing roller. The pressure sensor can be used to know at any time whether the pressure applied by the pressure roller changes, and if so, the adjustment component can be activated.

[0015] Furthermore, the rotating frame is connected to the noodle pressing roller via a support assembly; the support assembly includes support members connected to the two rotating rods, and a pin sensor mounted between the two support members; the noodle pressing roller is sleeved outside the pin sensor and is rotationally connected to the pin sensor. The pin sensor can both measure pressure and provide a rotational connection to the noodle pressing roller, resulting in a simple installation structure.

[0016] Compared with the prior art, the beneficial effects of the present invention are: (1) through the cooperation of the counterweight block and the adjustment component, there is no need for a cylinder or hydraulic cylinder to drive the rotating frame to swing and apply pressure, so that the pressure applied by the pressing roller can be controlled below 500N, and when the pressure changes or exceeds the pressure, the counterweight block can be driven by the adjustment component to move to stabilize the pressure below 500N, so that the pressing roller can apply a smaller pressure to the surface of the aluminum coil and maintain the pressure stable.

[0017] (2) By detecting the pressure of the noodle pressing roller, the distance between the counterweight block and the transmission frame is adjusted in real time according to the real-time change of the pressure of the noodle pressing roller to change the pressure of the noodle pressing roller, so that the pressure can be adjusted in real time and the pressure can be kept below 500N more stably. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the prior art of the pressing roller mechanism;

[0019] Figure 2 This is a structural schematic diagram of a first embodiment of an adjustable counterweight pressure roller mechanism;

[0020] Figure 3 It is a schematic structural diagram of a second embodiment of an adjustable counterweight pressure roller mechanism from a top perspective;

[0021] Figure 4 It is a structural schematic diagram of the front-end perspective of Example 2 or Example 3 of an adjustable counterweight pressure roller mechanism;

[0022] In the accompanying drawings: 100, rotating frame; 110, rotating rod; 120, rotating shaft; 200, pressing roller; 300, counterweight; 400, adjusting component; 410, linear drive component; 420-displacement sensor; 430-sensing plate; 500-support member; 600-pin shaft sensor. DETAILED DESCRIPTION

[0023] The present invention is further described below in conjunction with specific embodiments. The accompanying drawings are for illustrative purposes only and are schematic, not actual, representations. They should not be construed as limiting this patent. To better illustrate the embodiments of the present invention, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted from the drawings.

[0024] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right" and so on indicate the orientation or position relationship, they are based on the orientation or position relationship shown in the drawings. This is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0025] Example 1

[0026] This embodiment is the first embodiment of an adjustable counterweight type pressure roller mechanism. Figure 2 As shown, it includes a rotating frame 100 and a pressing roller 200 rotatably connected to one end of the rotating frame 100, the rotating frame 100 includes a rotating rod 110 connected in parallel, and the other end of the rotating frame 100 is installed with a counterweight block 300 and an adjustment component 400. The counterweight block 300 is slidably connected to the rotating frame 100, and the adjustment component 400 drives the counterweight block 300 to approach or move away from the rotating frame 100; a rotating shaft portion 120 for rotatably connecting to an external frame is provided between the two ends of the rotating frame 100.

[0027] Specifically, the adjustment assembly 400 includes a linear drive 410. The output end of the linear drive 410 is connected to the end of the turret 100, and the fixed end of the linear drive 410 is connected to the counterweight 300. When the pressure of the counterweight 300 needs to be changed, the linear drive 410 is activated, and the linear drive 410 and the counterweight 300 move away from or closer to the turret 100 together.

[0028] In this embodiment, a connecting rod connecting the two rotating rods 110 is provided at one end of the rotating frame 100 away from the pressing roller 200, the fixed end of the linear drive member 410 is connected to the counterweight block 300, and the output end of the linear drive member 410 is connected to the connecting rod.

[0029] In this embodiment, the linear drive member 410 is an electric push rod. The electric push rod has a relatively light weight, and even with the weight of the counterweight 300, the pressure applied by the dough pressing roller 200 will not exceed 500N.

[0030] Existing technologies such as Figure 1 As shown, the rotating frame 100 is driven by a cylinder to swing to apply pressure to the surface pressure roller.

[0031] The working principle of the adjustable counterweight pressure roller mechanism of this embodiment is as follows:

[0032] The counterweight block 300 and the pressing roller 200 are respectively located at the two ends of the rotating shaft portion 120. Counterweight blocks 300 of different weights are installed according to the surface pressure required by the aluminum coil. According to the principle of leverage, the change in the weight of the counterweight block 300 will affect the pressure applied to the aluminum coil by the pressing roller 200. Since there is no need for a cylinder or a hydraulic cylinder to change the swing amplitude of the rotating rod 110 to change the pressure applied by the pressing roller 200, the pressure applied to the outside by the pressure roller is changed by the counterweight block 300 with a lighter weight and adjustable weight, thereby applying less pressure to the surface of the aluminum coil. At the same time, depending on the thickness of the aluminum coil produced, the pressure of the pressing roller 200 will change due to the change in the angle of the rotating frame 100. At this time, the position of the counterweight 300 can be changed by starting the electric push rod. According to the lever principle, the distance between the counterweight 300 and the rotating shaft 120 changes, and the pressure applied to the aluminum coil by the pressing roller 200 can change immediately. Even if the thickness of the aluminum coil changes, the position of the counterweight 300 can be changed by adjusting the component 400 at a faster efficiency to keep the pressure applied to the surface of the aluminum coil by the pressing roller 200 unchanged or maintained below 500N, so that the pressure applied by the pressing roller 200 remains stable.

[0033] The beneficial effects of this embodiment are as follows: through the cooperation of the counterweight block 300 and the adjustment component 400, there is no need for a cylinder or hydraulic cylinder to drive the rotating frame 100 to swing and apply pressure, so that the pressure applied by the pressing roller 200 can be controlled below 500N, and when the pressure changes or exceeds the pressure, the adjustment component 400 can be used to drive the counterweight block 300 to move to stabilize the pressure below 500N, so that the pressing roller 200 can apply a smaller pressure to the surface of the aluminum coil and maintain a stable pressure.

[0034] Example 2

[0035] This embodiment is the second embodiment of the adjustable counterweight type pressure roller mechanism. Figure 3-4 As shown, it includes a rotating frame 100 and a pressing roller 200 rotatably connected to one end of the rotating frame 100, the rotating frame 100 includes a rotating rod 110 connected in parallel, and the other end of the rotating frame 100 is installed with a counterweight block 300 and an adjustment component 400. The counterweight block 300 is slidably connected to the rotating frame 100, and the adjustment component 400 drives the counterweight block 300 to approach or move away from the rotating frame 100; a rotating shaft portion 120 for rotatably connecting to an external frame is provided between the two ends of the rotating frame 100.

[0036] Specifically, the adjustment assembly 400 includes a linear drive 410, and two sets of counterweights 300 and adjustment assemblies 400 are provided, each connected to the end of the rotating rod 110 away from the dough pressing roller 200. The output end of the linear drive 410 is connected to the end of the rotating rod 110, and the fixed end of the linear drive 410 is connected to the counterweight 300. Generally, the adjustment assemblies 400 and counterweights 300 on the two rotating rods 110 maintain consistency in movement while changing distance. However, providing two sets of counterweights 300 and adjustment assemblies 400 allows for independent pressure adjustment when the pressure applied to the two ends of the dough pressing roller 200 changes due to inconsistent wear.

[0037] To further stabilize the movement of the counterweight 300, a sleeve 310 is provided on the end surface of the counterweight 300 connected to the linear drive member 410. The other end of the sleeve 310 is sleeved onto the outer surface of the rotating rod 110, and the axis of the sleeve 310 is parallel to the axis of the rotating rod 110. The sleeve 310 can restrict the counterweight 300 and the rotating rod 110. The sleeve 310 can only slide along the surface of the rotating rod 110, thereby better limiting the movement of the counterweight 300.

[0038] In this embodiment, the linear drive member 410 is an electric push rod. The electric push rod has a relatively light weight, and even with the weight of the counterweight 300, the pressure applied by the dough pressing roller 200 will not exceed 500N.

[0039] The adjustment assembly 400 also includes a travel sensing assembly for sensing the travel distance of the counterweight 300. In this embodiment, the travel sensing assembly includes a displacement sensor 420 and a sensing plate 430. The displacement sensor 420 and the sensing plate 430 are mounted on the counterweight 300 and the rotating rod 110, respectively, and their positions are interchangeable. In this embodiment, the displacement sensor 420 is mounted on the sleeve 310, and the sensing plate 430 is mounted on the rotating rod 110.

[0040] The travel of the counterweight 300 is sensed by sensing the change in distance between the displacement sensor 420 and the sensing plate 430. This means the moment arm distance between the counterweight 300 and the rotating shaft 120 can be determined. By recording different moment arm distances, during adjustment, the linear actuator 410 can be stopped once the travel sensing assembly senses a certain distance and meets the desired distance, allowing for more accurate adjustment of the travel distance of the counterweight 300. The axis of the sleeve 310 is parallel to the axis of the rotating rod 110, and the displacement sensor 420 moves with the sleeve 310, meaning that the displacement sensor 420 can move parallel to the axis of the rotating rod 110. This ensures that the line connecting the sensing end of the displacement sensor 420 and the sensing plate 430 is also parallel to the axis of the rotating rod 110. The distance traveled by the displacement sensor 420 is completely equivalent to the distance traveled by the counterweight 300, resulting in more accurate measurements by the displacement sensor 420 and making it easier to convert the distance traveled by the displacement sensor 420 into a change in pressure.

[0041] The working principle of this embodiment is as follows: the counterweight block 300 and the pressing roller 200 are respectively located at the two ends of the rotating shaft portion 120. Counterweight blocks 300 of different weights are installed according to the surface pressure required by the aluminum coil. According to the principle of leverage, the change in the weight of the counterweight block 300 will affect the pressure applied to the aluminum coil by the pressing roller 200. Since there is no need for a cylinder or a hydraulic cylinder to change the swing amplitude of the rotating rod 110 to change the pressure applied by the pressing roller 200, the pressure applied to the outside by the pressure roller is changed by the counterweight block 300 with a lighter weight and adjustable weight, thereby applying less pressure to the surface of the aluminum coil. At the same time, depending on the thickness of the aluminum coil being produced, the pressure of the dough roller 200 will change due to the change in the angle of the rotating frame 100. At this time, the position of the counterweight 300 can be changed by activating the electric push rod. According to the principle of leverage, the distance between the counterweight 300 and the rotating shaft 120 changes. At the same time, the displacement sensor 420 senses the distance with the sensing plate 430 to determine the distance change value of the counterweight 300 and determine the movement distance of the counterweight 300. When the pressure change caused by the movement distance of the counterweight 300 causes the pressure of the dough roller 200 to return to the original value or stabilize below 500N, the electric push rod stops moving, and the dough roller 200 can complete the adjustment of the pressure applied to the aluminum coil and stabilize it to the pressure required to meet the production requirements of the aluminum coil. Even if the thickness of the aluminum coil changes, the position of the counterweight 300 can be changed by adjusting the assembly 400 with high efficiency to keep the pressure applied to the surface of the aluminum coil by the dough roller 200 unchanged or below 500N, so that the pressure applied by the dough roller 200 remains stable.

[0042] Compared with the first embodiment, this embodiment has the following advantages: through the action of the stroke sensing component, the moving distance of the counterweight block 300 can be more accurately controlled according to the need of applying pressure by the pressing roller 200, so that the pressure applied by the pressing roller 200 to the aluminum coil can be better controlled and more stable.

[0043] Example 3

[0044] This embodiment is the third embodiment of the adjustable counterweight type pressing roller mechanism. This embodiment is similar to the second embodiment, except that: Figure 4 As shown, the rotating frame 100 is equipped with a pressure sensor for measuring the pressure of the pressing roller 200. The pressure sensor can be used to know at any time whether the pressure applied by the pressure roller changes, and if so, the adjustment component 400 can be activated.

[0045] In this embodiment, the rotating frame 100 is connected to the noodle pressing roller 200 via a support assembly. The support assembly includes support members 500, each connected to the two rotating rods 110, and a pin sensor 600 mounted between the two support members 500. The noodle pressing roller 200 is mounted outside the pin sensor 600 and is rotatably connected to the pin sensor 600. The pin sensor 600 can both measure pressure and provide a rotatable connection to the noodle pressing roller 200, resulting in a simple installation structure.

[0046] The operating principle of this embodiment is as follows: the pressure sensor, displacement sensor 420, and electric push rod can all be electrically connected to the controller. When the pressure sensor senses a change in pressure on the dough roller 200, the controller determines the required movement distance of the counterweight 300 based on the pressure change. The electric push rod then activates, driving the counterweight 300 to move until the distance change sensed by the displacement sensor 420 equals the required movement distance of the counterweight 300. The pressure change value and the required movement distance of the counterweight 300 can be preset. Of course, the above process can also be manually controlled. Through the above method, the pressure applied by the dough roller 200 on the surface of the aluminum coil can be adjusted to stabilize the pressure at a set value below 500N.

[0047] The beneficial effects of this embodiment are as follows: by detecting the pressure of the noodle pressing roller 200, the distance between the counterweight block 300 and the transmission frame is adjusted in real time according to the real-time changes in the pressure of the noodle pressing roller 200 to change the pressure of the noodle pressing roller 200, so that the pressure can be adjusted in real time and the pressure can be kept below 500N more stably.

[0048] In the specific contents of the above-mentioned specific implementation methods, the various technical features can be combined in any non-contradictory manner. In order to make the description concise, not all possible combinations of the above-mentioned technical features are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0049] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. A person skilled in the art will be able to make other variations or modifications based on the above description. It is not necessary and impossible to enumerate all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. An adjustable counterweight pressing roller mechanism, comprising a rotating frame (100) and a pressing roller (200) rotatably connected to one end of the rotating frame (100), wherein the rotating frame (100) comprises rotating rods (110) connected in parallel, characterized in that: A counterweight (300) and an adjustment assembly (400) are installed at the other end of the rotating frame (100), the counterweight (300) is slidably connected to the rotating frame (100), and the adjustment assembly (400) drives the counterweight (300) to approach the rotating frame (100) or to move away from the rotating frame (100); a rotating shaft portion (120) for rotationally connecting to an external frame is provided between the two ends of the rotating frame (100).

2. The adjustable counterweight pressure roller mechanism according to claim 1, characterized in that: The adjustment assembly (400) includes a linear drive member (410), an output end of the linear drive member (410) is connected to the end of the rotating frame (100), and a fixed end of the linear drive member (410) is connected to the counterweight (300).

3. The adjustable counterweight pressure roller mechanism according to claim 2, characterized in that: The counterweight (300) and the adjustment assembly (400) are provided in two groups, which are respectively connected to one end of the rotating rod (110) away from the pressing roller (200); the output end of the linear drive member (410) is connected to the end of the rotating rod (110).

4. The adjustable counterweight pressure roller mechanism according to claim 3, characterized in that: The linear drive member (410) is an electric push rod.

5. The adjustable counterweight pressure roller mechanism according to claim 3, characterized in that: The adjustment component (400) further comprises a travel sensing component for sensing the moving distance of the counterweight (300).

6. The adjustable counterweight pressure roller mechanism according to claim 5, characterized in that: The stroke sensing component includes a displacement sensor (420) and a sensing plate (430); the displacement sensor (420) is mounted on the counterweight (300), and the sensing plate (430) is mounted on the rotating rod (110), or the displacement sensor (420) is mounted on the rotating rod (110), and the sensing plate is mounted on the counterweight (300).

7. The adjustable counterweight pressure roller mechanism according to claim 6, characterized in that: The end surface of the counterweight block (300) connected to the linear drive member (410) is provided with a sleeve (310), the other end of the sleeve (310) is sleeved on the outer surface of the rotating rod (110), and the axis of the sleeve (310) is parallel to the axis of the rotating rod (110).

8. The adjustable counterweight pressure roller mechanism according to claim 7, characterized in that: The displacement sensor (420) is mounted on the sleeve (310), and the sensing plate (430) is mounted on the rotating rod (110).

9. The adjustable counterweight pressure roller mechanism according to any one of claims 6 to 8, characterized in that: The rotating frame (100) is equipped with a pressure sensor for measuring the pressure of the dough pressing roller (200).

10. The adjustable counterweight type pressing roller mechanism according to claim 9, characterized in that: The rotating frame (100) is connected to the dough pressing roller (200) via a support assembly; the support assembly comprises support members (500) respectively connected to the two rotating rods (110) and a pin sensor (600) installed between the two support members (500); the dough pressing roller (200) is sleeved outside the pin sensor (600) and is rotationally connected to the pin sensor (600).

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