Online weighing mechanism and sheet collecting equipment

Abstract

The utility model discloses an on-line weighing mechanism, which comprises a conveying belt, a weighing seat, a jacking piece and a driving piece, the conveying belt is provided with a working face and a belt back face which are opposite. The belt width direction of the conveying belt is the first direction. The weighing seat is fixedly arranged on the side of the first direction of the conveying belt, and the weighing seat comprises a weighing device; the weighing seat is provided with a weighing surface; the jacking piece is provided with a belt jacking face abutting against the belt back face, and the belt jacking face is arranged on the side of the first direction of the weighing face. The driving piece is connected with the jacking piece and is configured to drive the conveying belt to ascend and descend to the position higher than or lower than the weighing face. By adjusting the height of the conveying belt, the pole plate stack on the conveying belt is placed on the weighing seat, and the weighing precision and stability are improved. The utility model also discloses a piece collecting device comprising the on-line weighing mechanism.

Description

Technical Field

[0001] The utility model relates to the technical field of lead-acid battery plate production equipment, in particular to an online weighing mechanism and a plate collecting device. Background Art

[0002] The production process of lead-acid battery plates mainly includes the following steps: coating a continuous lead strip with paste and then coating it with paste paper to obtain a continuous plate, cutting the continuous plate to obtain a single plate, stacking the single plates to obtain a plate stack, and introducing the plate stack into a heating device for curing and drying. The consistency of plate manufacturing quality is the basis for the consistency of the single cell combination of lead-acid batteries, among which the consistency of the coating amount of lead paste is one of the main influencing factors. The weight difference of a single wet plate is small, so a weighing mechanism for the wet plate stack is usually set up in actual production to obtain the weight of the wet plate stack and feed back the adjustment plan to the paste coating equipment.

[0003] CN103940350A discloses a weighing device for wet electrode plate stacks, which is fixed under the conveyor belt. The weighing device includes a telescopic lifting mechanism and a weight sensor arranged under the lifting mechanism. The working process is as follows: the telescopic lifting mechanism lifts the wet electrode plate stack away from the conveyor belt, the weight sensor obtains the weight of the wet electrode plate stack, and then the telescopic lifting mechanism is reset to place the wet electrode plate stack back on the conveyor belt. CN109916481A also discloses a similar weighing mechanism, the difference being that the lifting frame and the weighing sensor move synchronously with the conveyor line along the guide rail.

[0004] The defects of the above weighing device are: the extension and retraction of the telescopic lifting mechanism will exert forces in the direction of gravity and the opposite direction on the weight sensor, and the inertial force of the upward wet electrode plate stack is opposite to the direction of gravity. The above two factors will lead to a decrease in weighing accuracy and stability, and prolong the weighing time for the weight sensor to reach a stable weighing state; in addition to the above influences, the weighing sensor that moves synchronously with the conveyor line is also affected by the inertia of the wet electrode plate stack in the conveying direction.

[0005] The weighing result is fed back to the paste coating equipment, and the paste coating equipment adjusts the paste coating amount accordingly. The lower the weighing accuracy, the greater the deviation between the plate with improved paste coating amount obtained according to the feedback information and the predetermined paste coating amount, which is not conducive to the consistency of the plate combination in the lead-acid battery; in the high-speed production line of the plate, the weighing time must be adapted to the interval between two adjacent stacks of wet plate stacks, so too long a weighing time is not conducive to the high-speed transportation of the plate stack. Utility Model Content

[0006] The purpose of the utility model is to overcome the defects in the prior art and provide an online weighing mechanism, which can adjust the height of the conveyor belt and place the plate stack on the conveyor belt on the weighing seat to improve the weighing accuracy and stability.

[0007] In order to achieve the above technical effects, the technical solution of the utility model is: an online weighing mechanism, comprising:

[0008] A conveyor belt having an opposite working surface and a belt back surface, wherein the belt width direction is a first direction;

[0009] A weighing seat, fixedly arranged on the side of the conveyor belt in the first direction, comprising a weighing device;

[0010] The weighing seat has a weighing surface;

[0011] It also includes a lifting member and a driving member, the lifting member has a top belt surface abutting against the back side of the belt, and the top belt surface is arranged on the side of the first direction of the weighing surface; the driving member is connected to the lifting member and is configured to drive the conveyor belt to rise or fall to a position above or below the weighing surface.

[0012] A preferred technical solution is that it comprises at least two conveyor belts arranged parallel to each other; and / or the weighing surface is arranged on both sides of at least one of the conveyor belts.

[0013] The preferred technical solution is that the conveyor belt includes a conveyor chain, and the driving mechanism of the conveyor belt includes a driving sprocket located at the discharge end and a driven sprocket located at the feed end; a bottom support is fixedly arranged under the back side of the conveyor belt, and the bottom support is provided with a horizontal chain supporting surface.

[0014] A preferred technical solution is that the chain supporting surface is provided with a conveyor chain guide groove extending along the conveying direction.

[0015] The preferred technical solution is that the lifting member includes a lifting base plate and a top belt portion fixedly arranged above the lifting base plate in a plumb direction, and the top belt surface is located on the top belt portion;

[0016] One of the telescopic ends of the driving member is connected to the lifting base plate; a through hole is arranged at the center of the lifting base plate, and the bottom end of the weighing seat is penetrated in the through hole.

[0017] A preferred technical solution is that the bottom support member is provided with a lifting channel penetrating in a vertical direction, the lifting channel is located on the first direction side of the chain guide groove, the lifting member is arranged in the lifting channel, and the top belt surface is rollingly matched with the shaft sleeve of the conveying chain.

[0018] A preferred technical solution is that the weighing seat includes a comb tooth piece and a fixed base plate, and the comb tooth piece is connected to the weighing device via the fixed base plate; the comb tooth piece is detachably fixedly connected to the fixed base plate, or the height of the comb tooth piece is adjustable.

[0019] A preferred technical solution is that the feed side and the discharge side of the lifting member are arranged opposite to each other along the conveying direction of the conveyor belt, and the feed side and the top belt surface have a rounded transition.

[0020] A preferred technical solution is that the length of the weighing surface along the conveying direction of the conveyor belt is smaller than the length of the top belt surface, and the weighing surface is arranged opposite to the middle position of the length of the top belt surface along the first direction.

[0021] The second object of the utility model is to provide a film collecting device, including the above-mentioned online weighing mechanism.

[0022] The advantages and beneficial effects of the utility model are:

[0023] The weighing seat of the online weighing mechanism is fixedly arranged. When the top belt surface of the lifting member is higher than the weighing surface of the weighing seat, the plate stack is in a conveying state; when the top belt surface of the lifting member is lower than the weighing surface of the weighing seat, the plate stack is transferred to the weighing surface for weighing;

[0024] The conveyor belt is deformed by lifting the lifting part, and the height of the plate stack is adjusted to prevent the working process of the weighing machine from being affected by the forces in the vertical direction and the opposite direction of other components, which is conducive to improving the weighing accuracy and stability, and the weighing time for the weighing device to reach a stable weighing state is short;

[0025] The weighing process does not require the conveyor belt to stop conveying, nor does it require the weighing mechanism to move with the conveyor belt. While completing the weighing, it also takes into account the discharge side of the weighing mechanism, meeting the rhythm requirements of rapid output of plate stacks in high-speed production. The number of driving parts is small and the probability of failure is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic diagram of the three-dimensional structure of the online weighing mechanism of the embodiment;

[0027] Figure 2 It is a partial enlarged view of the weighing seat in the embodiment;

[0028] Figure 3 yes Figure 2 A partial enlarged view of middle A;

[0029] Figure 4 yes Figure 3 A partial enlarged view of B in the middle;

[0030] Figure 5 It is a schematic diagram of the assembly structure of the weighing seat, the lifting part and the driving part;

[0031] Figure 6 It is a length comparison chart of the conveyor belt in the tensioned state and the relaxed state;

[0032] In the figure: 1, conveyor belt; 101, conveyor chain; 102, driving sprocket; 103, driven sprocket; 104, support block;

[0033] 2. Weighing seat; 2a. Weighing surface; 201. Weighing device; 202. Comb teeth; 203. Fixed base plate;

[0034] 3. Lifting member; 3a. Top belt surface; 3a. Feeding side surface; 3c. Discharging side surface; 301. Lifting base plate; 302. Top belt portion; 303. Through hole;

[0035] 4. Driving parts;

[0036] 5. Bottom supporting member; 5a. Chain supporting surface; 501. Chain guide groove; 502. Lifting channel. DETAILED DESCRIPTION

[0037] The following is a further description of the specific implementation of the present invention in conjunction with the accompanying drawings and embodiments. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0038] In the description of the present application, it should be noted that, unless otherwise specified, “plurality” means more than two; the terms “upper”, “lower”, “left”, “right”, “inside”, “outside”, etc., indicating directions or positional relationships, are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present application.

[0039] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances. Example

[0040] like Figure 1-5 As shown, the online weighing mechanism of the embodiment includes a conveyor belt 1, a weighing seat 2, a lifting member 3 and a driving member 4; the conveyor belt 1 has a relative working surface and a belt back surface, and the belt width direction of the conveyor belt 1 is a first direction (X direction in the figure); the weighing seat 2 is fixedly arranged on the side of the first direction of the conveyor belt 1, and the weighing seat 2 includes a weighing device 201; the weighing seat 2 has a weighing surface 2a; the lifting member 3 has a top belt surface 3a abutting against the belt back surface, and the top belt surface 3a is arranged on the side of the first direction of the weighing surface 2a; the driving member 4 is connected to the lifting member 3 and is configured to drive the conveyor belt 1 to rise or fall to a position higher than or lower than the weighing surface 2a.

[0041] The driving member 4 drives the lifting member 3 to rise and fall, and the conveyor belt 1 is deformed as the height of the lifting member 3 changes. The conveyor belt 1 before and after the deformation must meet the basic requirements of smoothly conveying the plate stack, including but not limited to adjusting the tension change of the conveyor belt 1 through a tension control mechanism, or preferably the structure of the conveyor belt 1.

[0042] The weighing device 201 is a weight sensor, and the detection accuracy of the weight sensor is selected according to the weighing accuracy requirement of the electrode plate stack.

[0043] It can be understood that the number of conveyor belts 1 along the first direction, the arrangement of the weighing surface 2a relative to the conveyor belt 1, and the arrangement of the top belt surface 3a relative to the conveyor belt 1 are configured according to the size of the electrode plate and the stability of the load-bearing electrode plate stack; including but not limited to: the number of conveyor belts 1 is one, the weighing surface 2a is arranged on two opposite sides of the conveyor belt 1 in the first direction, and the top belt surface 3a is arranged vertically opposite to at least part of the width direction of the conveyor belt 1. The number of conveyor belts 1 is two and they are arranged parallel to each other, the weighing surface 2a is arranged between the two conveyor belts 1, and the top belt surface 3a is arranged vertically opposite to at least part of the width direction of the conveyor belt 1.

[0044] The function of the driving member 4 is to drive the bottom support member to move up and down, including but not limited to a cylinder, a hydraulic cylinder, and an electric cylinder.

[0045] In some preferred embodiments, the continuous conveying device for online weighing comprises at least two conveyor belts 1 arranged parallel to each other; and / or the weighing surfaces 2a are arranged on both sides of at least one conveyor belt 1. Figure 1 Two groups of plate stack conveyor belts are arranged at the same time, and each group of plate stack conveyor belts includes two conveyor belts 1 arranged parallel to each other.

[0046] The existing lifting mechanism rises and falls synchronously with the weight sensor, which has problems such as low weighing accuracy, long weighing time, and short service life of the weight sensor; on the contrary, the weight sensor is fixedly set, and adjusting the height of the conveyor belt 1 and the plate stack on the conveyor belt 1 will introduce problems such as changes in the tension of the conveyor belt 1 and the stability of the bearing surface of the conveyor belt 1 during the adjustment process. In actual production, the number of plates in the plate stack is about 20, and the lack of stability of the bearing surface of the conveyor belt 1 will cause the plate stack to swing left and right; in addition, when the number of conveyor belts 1 carrying the same plate stack is more than two, the difference in the tension of the conveyor belt 1 must also be considered to ensure that the plate stack maintains a predetermined degree of neatness and is transported smoothly.

[0047] The conveyor belt 1 includes at least two belts arranged parallel to each other. The lifting member 3 drives the conveyor belt 1 to rise and fall. During the weighing process, the conveyor belt 1 can maintain a predetermined conveying speed without stopping to wait for the weighing to be completed. A grabbing mechanism or a discharging mechanism for the plate stack is arranged on the discharging side of the weighing seat 2, so that the weighing process does not affect the normal operation of the grabbing mechanism and the discharging mechanism.

[0048] The pole plate stack is pressed against the working surfaces of at least two conveyor belts 1. It can be understood that in order to further improve the weighing accuracy, the outer contour of the weighing surface 2a is equal to or larger than the bottom surface of the pole plate stack, and the pole plate stack is placed in the middle position of the outer contour of the weighing surface 2a.

[0049] In this embodiment, the number of conveyor belts 1 is two, and a weighing frame provided with a weighing surface 2a along the first direction has three comb tooth units, and the conveyor belts 1 and the comb tooth units are alternately arranged along the first direction.

[0050] like Figure 1-4 As shown in Figures 6, in some preferred embodiments, the conveyor belt 1 includes a conveyor chain 101, and the driving mechanism of the conveyor belt 1 includes a driving sprocket 102 located at the discharge end and a driven sprocket 103 located at the feed end; a bottom support member 5 is fixedly arranged under the back side of the conveyor belt 1, and the bottom support member 5 is provided with a horizontal chain supporting surface 5a.

[0051] In order to adapt to the high-speed production of lead-acid battery plates, the lifting speed of the lifting member 3 is relatively fast.

[0052] The lifting member 3 descends, and the raised part of the working surface of the conveyor belt 1 descends and falls to the horizontal chain supporting surface 5a. The length of the conveyor chain 101 between the feed end and the discharge end of the conveyor belt 1 is greater than the length of the conveyor chain 101 in the tensioned state. Therefore, the conveyor chain 101 on the bottom support member 5 is in a relaxed state, and the angle between the chain links of the conveyor chain 101 is reduced (from a straight angle to an obtuse angle, or a larger obtuse angle to a smaller obtuse angle). The chain links with reduced angles are randomly distributed on the chain links of the conveyor chain 101 close to the weighing seat 2, and the above-mentioned deformation margin is stored. The sprocket at the discharge end maintains a predetermined rotation speed, and the sprocket at the feed end stops rotating. After the conveyor chain 101 between the feed end and the discharge end is in a tensioned state, the sprocket at the feed end resumes the synchronous rotation with the sprocket at the discharge end.

[0053] When the lifting member 3 rises, the length of the tensioned conveyor chain 101 required between the feed end and the discharge end of the conveyor belt 1 is greater than the actual length of the conveyor chain before rising, and the driven sprocket 103 rotates with the rising action of the lifting member 3, adaptively supplementing the conveyor chain length, and responding quickly.

[0054] Comparison of the length of the conveyor chain in the tensioned state and the relaxed state Figure 6 As shown, the conveyor chain in the tensioned state is straight, and the conveyor chain in the relaxed state is bent. The horizontal length occupied by the conveyor chain in the relaxed state is slightly smaller. The more chain links there are, the more obvious the difference in length of the conveyor chain in the two states is.

[0055] When the conveyor belt 1 is a flat belt, the conveyor belt 1 is deformed by the lifting member 3, and a flat belt tension adjustment mechanism must be provided to ensure a predetermined smooth working surface, and the flat belt tension adjustment mechanism matches the stroke of the lifting member 3. The bottom support member 5 is used in combination with the conveyor chain 101, so that the conveyor belt 1 can use the driving sprocket 102 and the driven sprocket 103 driving mechanism of the conventional conveyor belt 1, and there is no need to provide a conveyor belt 1 tension adjustment mechanism and a tension detection mechanism that are frequently started and stopped, thereby simplifying the control system.

[0056] The top surface of the conveyor chain 101 is a concave-convex surface. In order to form a flat working surface, further, the chain links of the conveyor chain 101 are fixedly provided with supporting blocks 104 along the vertical direction. The combination of the conveyor chain 101 and the supporting blocks 104 can be selected as an existing cover plate chain.

[0057] As shown in Figures 3 and 4, in some preferred embodiments, the chain supporting surface 5a is provided with a Figure 3 A chain guide groove 501 extending in the Y direction.

[0058] One of the functions of the chain guide groove is to guide the conveyor chain 101 to land. The chain link far away from the weighing seat 2 lands on the chain supporting surface 5a first, and the chain link close to the weighing seat 2 lands on the chain supporting surface 5a later. The relative side walls of the chain guide groove limit the deflection of the chain links in the first direction, especially the chain links close to the weighing seat 2, to ensure that all the chain links are landed and abut against the bottom surface of the chain guide groove 501; the second function of the chain guide groove is to guide the conveyor chain 101 to move toward the discharge end, to avoid the partial displacement of the loose conveyor chain 101 along the axial direction of the chain pin, and to prevent the conveyor chain and the top belt surface 3a from deviating from each other in the vertical direction.

[0059] It can be understood that the chain guide groove based on the conveying chain 101 is continuously arranged along the conveying direction. Further, the chain guide groove 501 includes two unit grooves, and the unit grooves are arranged corresponding to the chain plates of the conveying chain 101. A convex strip is sandwiched between the two unit grooves, and the convex strip is arranged opposite to the shaft sleeve of the conveying chain 101 along the plumb direction. Further, the convex top surface of the convex strip constitutes the bearing surface of the conveying chain shaft sleeve to increase the contact area between the chain support surface 5a and the conveying chain.

[0060] like Figure 2 , 5 As shown, in some preferred embodiments, the lifting member 3 includes a lifting base plate 301, a top belt portion 302 fixedly arranged above the lifting base plate 301 in the plumb direction, and the top belt surface 3a is located at the top belt portion 302; one of the telescopic ends of the driving member 4 is connected to the lifting base plate 301; a through hole 303 is arranged at the center of the lifting base plate 301, and the bottom end of the weighing seat 2 is penetrated through the through hole 303.

[0061] Furthermore, the weighing seat 2 and the driving member 4 are fixedly connected to the same base.

[0062] The weighing seat 2 is inserted into the central through hole 303 of the lifting base plate 301 , and the lifting member 3 and the weighing seat 2 are integrated at a location below the conveyor belt 1 , which has a compact structure and is conducive to the control of the length of the conveyor belt 1 .

[0063] like Figure 4 As shown, in some preferred embodiments, the bottom support member 5 is provided with a lifting channel 502 penetrating in the vertical direction, the lifting channel 502 is located on the first direction side of the chain guide groove 501, the lifting member 3 is arranged in the lifting channel 502, and the top belt surface 3a is in rolling cooperation with the shaft sleeve of the conveying chain 101.

[0064] The bottom surface of the conveyor chain 101 is a groove with an opening downward formed by a combination of chain plates and shaft sleeves. The lifting member 3 is arranged in the groove with a concave-convex fit, and the chain plates on both sides limit the displacement of the conveyor chain 101 along the axial direction of the chain pin; further, the conveyor chain 101 has a large deadweight, which increases the vertical interaction force between the conveyor chain 101 and the top belt surface 3a, ensuring that the positions of the two components are relatively stable during the process of the lifting member 3 pushing the conveyor chain 101 off the chain support surface 5a. When the lifting member 3 pushes the conveyor chain 101 off the chain support surface 5a, the conveyor belt 1 still maintains the conveying state, and the rolling fit is conducive to reducing the wear of the top belt surface 3a and the conveyor belt 1, so that the preset lifting stroke of the top belt surface 3a meets the long-term use requirements, that is, there is no need to adaptively adjust the lifting stroke according to the wear of the components.

[0065] Furthermore, the lifting channel 502 is arranged between two unit grooves of the chain guide groove 501, and the chain guide groove 501 is arranged one-to-one corresponding to the chain plate of the same conveyor chain 101. The convex strip between the two unit grooves and the top belt part 302 are both rollingly matched with the shaft sleeve of the chain plate.

[0066] like Figure 2 , 5 As shown, in some preferred embodiments, the weighing seat 2 includes a comb-tooth member 202 and a fixed base plate 203, and the comb-tooth member 202 is connected to the weighing device 201 through the fixed base plate 203; the comb-tooth member 202 is detachably fixedly connected to the fixed base plate 203, or the height of the comb-tooth member 202 is adjustable. Based on the predetermined driving member 4 and its lifting stroke, the comb-tooth member 202 of different heights is replaced, or the height of the comb-tooth member 202 is adjusted, so as to change the height difference between the weighing surface 2a and the top belt surface 3a, and adapt to the plate stacks of different heights and plate surface sizes. The higher the height of the plate stack, the worse the stability of the plate stack; the larger the plate surface size, the higher the stability of the plate stack.

[0067] like Figure 5 As shown, in some preferred embodiments, the feed side 3b and the discharge side 3c of the lifting member 3 are arranged relatively to each other along the conveying direction of the conveyor belt 1, the feed side 3b and the top belt surface 3a have a rounded transition, and the feed side 3b and the top belt surface 3a are rollingly matched with the shaft sleeve of the conveyor chain 101.

[0068] The rounded transition of the feed side surface 3b and the top belt surface 3a is conducive to the formation of a smooth inclined surface of the chain links of the conveyor chain 101; on the contrary, the feed side surface 3b and the top belt surface 3a transition at a right angle, the angle of the chain links at the right-angle transition is too small, and the working surface is a folded surface. The plate stack with inertia in the conveying direction is easy to fall off the conveyor belt 1 when passing through this place, or the plate stack becomes skewed, and the stability of the plate stack is deteriorated.

[0069] like Figure 5 As shown, in some preferred embodiments, the length of the weighing surface 2a along the conveying direction of the conveyor belt 1 is less than the length of the top belt surface 3a, and the weighing surface 2a is arranged opposite to the middle position of the length of the top belt surface 3a along the first direction.

[0070] It can be understood that the weighing surface 2a and the weight sensor are arranged vertically opposite each other; further, the weighing surface 2a and the top belt surface 3a are both horizontal planes.

[0071] The relative length setting between the weighing surface 2a and the top belt surface 3a in the conveying direction meets the use requirement of the conveyor belt 1 to maintain high-speed conveying. Before the plate stack is pressed onto the weighing surface 2a, the plate stack maintains a high-speed conveying state, and the top belt surface 3a pre-adjusts the conveying direction of the plate stack to be horizontal to ensure the stability of the stacking structure of the plate stack and avoid the displacement and deviation of the top plate in the plate stack relative to the bottom plate.

[0072] It is understandable that the online weighing mechanism also includes electrical control components such as a plate stack position sensor.

[0073] The film collecting device of the embodiment includes the above-mentioned online weighing mechanism.

[0074] It can be understood that the sheet collecting mechanism is arranged on the discharge side of the slitting mechanism, the online weighing mechanism, the stacking mechanism and the discharge mechanism of the plate stack, and the stacking mechanism, the weighing seat and the discharge mechanism are arranged on the conveyor belt along the conveying direction.

[0075] The online weighing method based on the above embodiment comprises the following steps:

[0076] S1: The driving member 4 lowers the conveyor belt 1 from a position higher than the weighing surface 2a to a position lower than the weighing surface 2a. After the conveyor belt 1 is lowered, it is located in a receiving groove with an opening upward formed by the comb member 202 and the fixed base plate 203. The conveyed object is transferred from the conveyor belt 1 to the weighing surface 2a of the weighing seat 2.

[0077] S2: The weighing device 201 obtains the mass of the conveyed object;

[0078] S3: The driving member 4 raises the top belt surface 3a of the lifting member 3 from a position lower than the weighing surface 2a to a position higher than the weighing surface 2a, so that the conveyed object is lifted off the weighing surface 2a of the weighing seat 2, and the conveyed object is transferred from the weighing seat 2 to the conveyor belt 1;

[0079] S4: The conveyor belt 1 transfers the conveyed object to the discharge side of the weighing seat 2.

[0080] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. An online weighing mechanism, characterized in that: include: A conveyor belt having an opposite working surface and a belt back surface, wherein the belt width direction is a first direction; A weighing seat, fixedly arranged on the side of the conveyor belt in the first direction, comprising a weighing device; The weighing seat has a weighing surface; It also includes a lifting member and a driving member, the lifting member has a top belt surface abutting against the back side of the belt, and the top belt surface is arranged on the side of the first direction of the weighing surface; the driving member is connected to the lifting member and is configured to drive the conveyor belt to rise or fall to a position above or below the weighing surface.

2. The online weighing mechanism according to claim 1, characterized in that: It comprises at least two conveyor belts arranged parallel to each other; and / or the weighing surface is arranged on both sides of at least one of the conveyor belts.

3. The online weighing mechanism according to claim 1, characterized in that: The conveyor belt comprises a conveyor chain, and the driving mechanism of the conveyor belt comprises a driving sprocket at the discharging end and a driven sprocket at the feeding end; a bottom support is fixedly arranged below the back surface of the conveyor belt, and the bottom support is provided with a horizontal chain supporting surface.

4. The online weighing mechanism according to claim 3, characterized in that The chain supporting surface is provided with a conveyor belt chain guide groove extending along the conveying direction.

5. The online weighing mechanism according to claim 1, characterized in that: The lifting member includes a lifting base plate and a top belt portion fixedly arranged above the lifting base plate in a plumb direction, and the top belt surface is located on the top belt portion; One of the telescopic ends of the driving member is connected to the lifting base plate; a through hole is arranged at the center of the lifting base plate, and the bottom end of the weighing seat is penetrated in the through hole.

6. The online weighing mechanism according to claim 4, characterized in that: The bottom support is provided with a lifting channel penetrating in a vertical direction, the lifting channel is located on the side of the chain guide groove in the first direction, the lifting member is arranged in the lifting channel, and the top belt surface is in rolling cooperation with the shaft sleeve of the conveying chain.

7. The online weighing mechanism according to claim 1, characterized in that: The weighing seat comprises a comb-tooth piece and a fixed base plate, wherein the comb-tooth piece is connected to the weighing device via the fixed base plate; the comb-tooth piece is detachably fixedly connected to the fixed base plate, or the height of the comb-tooth piece is adjustable.

8. The online weighing mechanism according to claim 3, characterized in that: The feeding side surface and the discharging side surface of the lifting member are arranged opposite to each other along the conveying direction of the conveyor belt, and the feeding side surface and the top belt surface have a rounded transition.

9. The online weighing mechanism according to claim 1, characterized in that: The length of the weighing surface along the conveying direction of the conveyor belt is smaller than the length of the top belt surface, and the weighing surface is arranged opposite to the middle position of the length of the top belt surface along the first direction.

10. A film collecting device, comprising the online weighing mechanism according to any one of claims 1 to 9.

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