Bag clamping and weighing device for material packaging production

Abstract

The utility model discloses a bag clamping weighing device for material packaging production, which comprises a rack (1), a weighing sensor (2), a sensor mounting plate (3), a clamp mounting plate (4) and two bag clamping mechanisms (5), the clamp mounting plate (4) is horizontally arranged in front of the rack (1), the sensor mounting plate (3) is vertically arranged in the center of the top surface of the clamp mounting plate (4), and the two bag clamping mechanisms (5) are arranged on the rack (1). The front end of the weighing sensor (2) is fixedly connected with the sensor mounting plate (3), the rear end of the weighing sensor (2) is fixedly connected with the rack (1), and the two bag clamping mechanisms (5) are symmetrically arranged at the left end and the right end of the clamp mounting plate (4). When materials are reweighed and inspected after being filled and weighed, an upper weighing mode is adopted, a material bag can be kept in a vertical state when being weighed, the gravity center is stable, the weighing mechanism does not shake, the stability is good, the accuracy of weighing data is ensured, and the proceeding of material packaging production is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of material packaging production, in particular to a bag clamping and weighing device used in material packaging production. Background Art

[0002] In a fully automatic packaging production line, materials usually need to be reweighed and inspected after filling and weighing. This process is crucial to whether the products produced by material packaging are qualified.

[0003] In material packaging production, reweighing inspection devices were previously typically installed after the material product packaging was sealed. However, if the reweighing failed, the bag would need to be opened and refilled, which was not only time-consuming and labor-intensive, but also wasteful. Reweighing inspection is now performed after the material is filled and weighed. Currently, reweighing inspection devices are installed on a bag-holding and horizontal machine, with the load cell mounted below the weighing platform. Because the weighing platform is not fixed and easily shakes, resulting in poor stability, and the material bag easily tilts, resulting in an unstable center of gravity, this bottom-up weighing method often leads to inaccurate weighing data, seriously affecting the progress of material packaging production. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a bag clamping weighing device for material packaging production which adopts an upper weighing method when reweighing and inspecting the material after filling and weighing, thereby not only ensuring that the center of gravity of the material bag is stable in the vertical state, but also ensuring that the weighing data is accurate, and has a simple structure.

[0005] In order to solve the above technical problems, the utility model adopts a bag clamping and weighing device for material packaging production, which includes a frame, a weighing sensor, a sensor mounting plate, a clamp mounting plate and two bag clamping mechanisms. The clamp mounting plate is horizontally arranged in front of the frame, and the sensor mounting plate is vertically arranged in the center of the top surface of the clamp mounting plate. The front end of the weighing sensor is fixedly connected to the sensor mounting plate, and the rear end of the weighing sensor is fixedly connected to the frame. The two bag clamping mechanisms are symmetrically arranged at the left and right ends of the clamp mounting plate.

[0006] As a preferred embodiment of the present invention, the bag clamping mechanism includes a cylinder, a fixed plate, a push-pull rod, a front connecting rod, a rear connecting rod, a front clamp arm and a rear clamp arm. The cylinder is installed above one end of the clamp mounting plate, and the driving rod of the cylinder passes downward through the clamp mounting plate. The upper end of the push-pull rod is fixedly connected to the driving rod of the cylinder, and one end of the front connecting rod and one end of the rear connecting rod are rotatably connected to the lower end of the push-pull rod respectively. The other end of the front connecting rod and the other end of the rear connecting rod are rotatably connected to the upper end of the front clamp arm and the upper end of the rear clamp arm respectively. The fixed plate is vertically arranged below one end of the clamp mounting plate and on the side of the driving rod of the cylinder. The upper end of the fixed plate is fixedly connected to the clamp mounting plate, and the arm body of the front clamp arm and the arm body of the rear clamp arm are rotatably connected to the front end and rear end of the fixed plate respectively.

[0007] The two levers have the inner wall of the two guide rails, and the two guide rails are connected along the longitudinal direction of the rotation of the crankshaft to the longitudinal direction of the rotation of the crankshaft, and the two guide rails are connected along the longitudinal direction of the rotation of the crankshaft to the longitudinal direction of the rotation of the crankshaft. The upper end of the rear clamp arm is embedded between the front ends of the two front links and is rotatably connected to the front short pin shaft. The upper end of the rear clamp arm is embedded between the rear ends of the two rear links and is rotatably connected to the front short pin shaft. The arm body of the rear clamp arm is embedded between the rear ends of the lower parts of the two fixed plates and is rotatably connected to the fixed plate through the front long pin shaft. The upper end of the rear clamp arm is embedded between the rear ends of the two rear links and is rotatably connected to the fixed plate through the rear long pin shaft.

[0008] As a preferred embodiment of the present invention, the lower ends of the front clamping arm and the rear clamping arm are respectively fixedly installed with a front clamping plate and a rear clamping plate, and the front bag rubber block and the rear bag rubber block are respectively fixedly installed with the rear end of the lower part of the front clamping plate and the front end of the lower part of the rear clamping plate, and the front bag detection plate and the rear bag detection plate are respectively fixedly installed with the front front end and the rear end of the lower part of the front clamping plate. The inner ends of the front bag rubber block and the rear bag rubber block are respectively provided with a front countersunk hole and a rear countersunk hole, and the front clamping plate and the rear clamping plate are respectively provided with a front through hole and a rear through hole corresponding to the front countersunk hole and the rear countersunk hole, and a front bag detection tube and a rear bag detection tube are respectively provided on the front bag detection plate and the rear bag detection plate, and the front bag detection tube and the rear bag detection tube respectively pass through the front through hole and the rear through hole, and respectively resist the front bag rubber block and the rear bag rubber block in the front countersunk hole and the rear countersunk hole.

[0009] As a preferred embodiment of the present invention, the device also includes a dust hood assembly, which includes a dust hood and a ventilation pipe. The dust hood is arranged above the weighing sensor and is fixedly connected to the frame. The ventilation pipe is arranged at the upper end of the dust hood, one end of the ventilation pipe is connected to the upper end of the dust hood, and the other end of the ventilation pipe is connected to the dust suction device.

[0010] After adopting the above structure, the utility model has the following beneficial effects:

[0011] The present invention relates to a bag-clamping and weighing device for material packaging production, comprising a frame, a weighing sensor, a sensor mounting plate, a clamp mounting plate, and two bag-clamping mechanisms. The clamp mounting plate is horizontally arranged in front of the frame, the sensor mounting plate is vertically arranged in the center of the top surface of the clamp mounting plate, the front end of the weighing sensor is fixedly connected to the sensor mounting plate, and the rear end of the weighing sensor is fixedly connected to the frame. The two bag-clamping mechanisms are symmetrically arranged at the left and right ends of the clamp mounting plate. During operation, the bag-clamping mechanisms are initially in an open state. After material is filled and weighed, the material bag is transported to the bottom of the bag-clamping and weighing device by a translational lifting conveyor device. The conveying lifting platform of the translational lifting conveyor device lifts the material bag into position. The two bag-clamping mechanisms simultaneously clamp the upper ends of the material bag, respectively. The conveying lifting platform descends, the weighing sensor obtains weighing data and transmits it to a processor for processing. The conveying lifting platform then ascends, and the bag-clamping mechanisms release the material bag. If the material bag is of acceptable weight, it is transported to the next process by the translational lifting conveyor device. If the material bag is of unacceptable weight, it returns to the previous process to be added or reduced. In this way, the upper weighing method of the utility model keeps the material bag in a vertical state when weighing, the center of gravity is stable, the weighing mechanism does not shake, and the stability is good, which ensures the accuracy of the weighing data and the progress of the material packaging production.

[0012] The bag clamping mechanism of the present invention includes a cylinder, a fixed plate, a push-pull rod, a front connecting rod, a rear connecting rod, a front clamping arm, and a rear clamping arm. The cylinder is mounted above one end of the clamping mounting plate, and the driving rod of the cylinder passes downward through the clamping mounting plate. The upper end of the push-pull rod is fixedly connected to the driving rod of the cylinder. One end of the front connecting rod and one end of the rear connecting rod are respectively rotatably connected to the lower end of the push-pull rod. The other ends of the front connecting rod and the other ends of the rear connecting rod are respectively rotatably connected to the upper ends of the front clamping arm and the upper ends of the rear clamping arm. The fixed plate is vertically arranged below one end of the clamping mounting plate and on one side of the driving rod of the cylinder. The upper end of the fixed plate is fixedly connected to the clamping mounting plate, and the arm body of the front clamping arm and the arm body of the rear clamping arm are respectively rotatably connected to the front and rear ends of the fixed plate. The bag clamping mechanism of the present invention with this structure is very flexible and reliable in clamping bags.

[0013] The two levers have the upper and lower ends of the levers are connected along the longitudinal axis, and the lower ends of the levers are connected along the longitudinal axis to form a loop of levers that are located adjacent to the top of the levers, and the lower ends of the levers are connected along the longitudinal axis to form a loop of levers that are linked together. The front middle pin is rotatably connected, a front short pin is fixedly arranged between the front ends of the two front links, the front ends of the two rear links are fixedly connected by a rear sleeve, the front ends and rear sleeves of the two rear links are embedded in the lower rear ends between the two push-pull rods and are rotatably connected to the rear middle pin, a rear short pin is fixedly arranged between the rear ends of the two rear links, the upper end of the front clamp arm is embedded between the front ends of the two front links and is rotatably connected to the front short pin, the body of the front clamp arm is embedded between the front ends of the lower parts of the two fixed plates and is rotatably connected to the fixed plates via the front long pin, the upper end of the rear clamp arm is embedded between the rear ends of the two rear links and is rotatably connected to the fixed plates via the rear long pin. In this way, the bag clamping mechanism of the utility model can withstand greater force, is very safe and firm, and further improves flexibility and reliability.

[0014] The utility model describes that the lower end of the front clamping arm and the lower end of the rear clamping arm are respectively fixedly installed with a front clamping plate and a rear clamping plate, and the front bag rubber block and the rear bag rubber block are respectively fixedly installed with the rear end of the lower part of the front clamping plate and the front end of the lower part of the rear clamping plate, and the front bag detection plate and the rear bag detection plate are respectively fixedly installed with the front front end of the lower part of the front clamping plate and the rear end of the lower part of the rear clamping plate, and the front bag rubber block and the rear bag rubber block are respectively opened with a front countersunk hole and a rear countersunk hole, and the front clamping plate and the rear clamping plate are respectively opened with a front through hole and a rear through hole corresponding to the front countersunk hole and the rear countersunk hole, and a front bag detection tube and a rear bag detection tube are respectively provided on the front bag detection plate and the rear bag detection plate, and the front bag detection tube and the rear bag detection tube respectively pass through the front through hole and the rear through hole, and respectively resist the front bag rubber block and the rear bag rubber block in the front countersunk hole and the rear countersunk hole. Such a structure can ensure that the clamp arm does not damage the packaging bag, and further ensures that the bag clamping and weighing are carried out reliably.

[0015] The device of the present invention also includes a dust cover assembly, which includes a dust cover and a ventilation pipe. The dust cover is arranged above the weighing sensor and fixedly connected to the frame. The ventilation pipe is arranged at the upper end of the dust cover, one end of the ventilation pipe is connected to the upper end of the dust cover, and the other end of the ventilation pipe is connected to the dust collection device. In this way, when weighing, the present invention can first remove excess material dust that falls on the material packaging bag before weighing, thereby obtaining more accurate weighing data.

[0016] The utility model has the advantages of simple structure, convenient implementation, easy installation and operation, and low manufacturing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The specific implementation of the present invention will be further described in detail below with reference to the accompanying drawings.

[0018] Figure 1 The utility model is a three-dimensional schematic diagram of a bag clamping and weighing device used in material packaging production.

[0019] Figure 2 for Figure 1 A three-dimensional schematic diagram of the front structure of the bag clamping mechanism.

[0020] Figure 3 for Figure 1 A three-dimensional schematic diagram of the rear structure of the bag clamping mechanism.

[0021] Figure 4 This is a schematic structural diagram of the dust cover assembly installed in the present invention. DETAILED DESCRIPTION

[0022] See also Figure 1 、 Figure 2 、 Figure 3 and Figure 4The bag clamping and weighing device shown in the figure is used for material packaging production, including a frame 1, a weighing sensor 2, a sensor mounting plate 3, a clamp mounting plate 4 and two bag clamping mechanisms 5. The clamp mounting plate 4 is horizontally arranged in front of the frame 1, and the sensor mounting plate 3 is vertically arranged in the center of the top surface of the clamp mounting plate 4. The front end of the weighing sensor 2 is fixedly connected to the sensor mounting plate 3, and the rear end of the weighing sensor 2 is fixedly connected to the frame 1. The two bag clamping mechanisms 5 are symmetrically arranged at the left and right ends of the clamp mounting plate 4.

[0023] As a preferred embodiment of the present invention, Figure 3 、 Figure 4 As shown, the bag clamping mechanism 5 includes a cylinder 5-1, a fixing plate 5-2, a push-pull rod 5-3, a front connecting rod 5-4, a rear connecting rod 5-5, a front clamp arm 5-6 and a rear clamp arm 5-7. The cylinder 5-1 is installed above one end of the clamp mounting plate 4, and the driving rod of the cylinder 5-1 passes downward through the clamp mounting plate 4. The upper end of the push-pull rod 5-3 is fixedly connected to the driving rod of the cylinder 5-1, and one end of the front connecting rod 5-4 and one end of the rear connecting rod 5-5 are respectively connected to the push-pull rod 5- 3 is rotatably connected at the lower end, the other end of the front connecting rod 5-4 and the other end of the rear connecting rod 5-5 are rotatably connected to the upper end of the front clamp arm 5-6 and the upper end of the rear clamp arm 5-7 respectively, the fixed plate 5-2 is vertically arranged below one end of the clamp mounting plate 4 and on the side of the driving rod of the cylinder 5-1, the upper end of the fixed plate 5-2 is fixedly connected to the clamp mounting plate 4, the arm body of the front clamp arm 5-6 and the arm body of the rear clamp arm 5-7 are rotatably connected to the front end and rear end of the fixed plate 5-2 respectively.

[0024] As a preferred embodiment of the present invention, Figure 3 、 Figure 4As shown, the fixed plates 5-2 are two pieces, and the fixed plates 5-2 are in the shape of a frame with an opening downward. The two fixed plates 5-2 are respectively arranged vertically and symmetrically on the left and right sides of the cylinder 5-1 driving rod below one end of the clamp mounting plate 4. A connecting plate 5-8 is fixedly arranged between the front end and the rear end of the upper part of the two fixed plates 5-2. The upper ends of the two connecting plates 5-8 are respectively fixedly connected to the clamp mounting plate 4. There are two push-pull rods 5-3, and the upper ends of the two push-pull rods 5-3 are fixed by a connecting block 5-3-1. The upper end of the connecting block 5-3-1 is fixedly connected to the driving rod of the cylinder 5-1, and a front center pin 5-3-2 and a rear center pin 5-3-3 are fixedly arranged between the front and rear ends of the lower parts of the two push-pull rods 5-3, respectively. There are two front connecting rods 5-4 and two rear connecting rods 5-5. The rear ends of the two front connecting rods 5-4 are fixedly connected by a front shaft sleeve 5-4-1. The rear ends of the two front connecting rods 5-4 and the front shaft sleeve 5-4-1 are embedded in the lower front end between the two push-pull rods 5-3, and are fixed with the front center pin 5- 3-2 is rotatably connected, a front short pin 5-4-2 is fixedly set between the front ends of the two front links 5-4, the front ends of the two rear links 5-5 are fixedly connected by the rear axle sleeve 5-5-1, the front ends of the two rear links 5-5 and the rear axle sleeve 5-5-1 are embedded in the lower rear ends between the two push-pull rods 5-3, and are rotatably connected with the rear middle pin 5-3-3, a rear short pin 5-5-2 is fixedly set between the rear ends of the two rear links 5-5, and the upper end of the front clamp arm 5-6 is embedded between the front ends of the two front links 5-4, The front clamp arm 5-6 is embedded between the front ends of the lower parts of the two fixed plates 5-2 and is rotatably connected to the fixed plates 5-2 through the front long pin 5-2-1. The upper end of the rear clamp arm 5-7 is embedded between the rear ends of the two rear links 5-5 and is rotatably connected to the rear short pin 5-5-2. The rear clamp arm 5-7 is embedded between the rear ends of the lower parts of the two fixed plates 5-2 and is rotatably connected to the fixed plates 5-2 through the rear long pin 5-2-2.

[0025] As a preferred embodiment of the present invention, Figure 3 、 Figure 4As shown, the lower end of the front clamp arm 5-6 and the lower end of the rear clamp arm 5-7 are respectively fixedly installed with the front clamp plate 5-9 and the rear clamp plate 5-10, the lower rear end of the front clamp plate 5-9 and the lower front end of the rear clamp plate 5-10 are respectively fixedly installed with the front bag rubber block 5-11 and the rear bag rubber block 5-12, the lower front end of the front clamp plate 5-9 and the lower rear end of the rear clamp plate 5-10 are respectively fixedly installed with the front bag detection plate 5-13 and the rear bag detection plate 5-14, the inner end of the front bag rubber block 5-11 and the inner end of the rear bag rubber block 5-12 are respectively provided with front sinkers Hole, rear countersunk hole, the front clamping plate 5-9 and the rear clamping plate 5-10 are respectively provided with front through holes and rear through holes corresponding to the front countersunk hole and the rear countersunk hole, the front bag detection plate 5-13 and the rear bag detection plate 5-14 are respectively provided with front bag detection tube 5-13-1 and rear bag detection tube 5-14-1, the front bag detection tube 5-13-1 and the rear bag detection tube 5-14-1 pass through the front through hole and the rear through hole respectively, and respectively abut against the front bag rubber block 5-11 and the rear bag rubber block 5-12 in the front countersunk hole and the rear countersunk hole.

[0026] As a preferred embodiment of the present invention, Figure 4 As shown, the device also includes a dust cover assembly 6, which includes a dust cover 6-1 and a ventilation pipe 6-2. The dust cover 6-1 is arranged above the weighing sensor 2 and is fixedly connected to the frame 1. The ventilation pipe 6-2 is arranged at the upper end of the dust cover 6-1. One end of the ventilation pipe 6-2 is connected to the upper end of the dust cover 6-1, and the other end of the ventilation pipe 6-2 is connected to the dust suction device.

[0027] When the present invention is first working, the front clamping arm 5-6 and the rear clamping arm 5-7 of the bag clamping mechanism are initially in the open state. After the material is filled and weighed, the material bag is sent to the bottom of the bag clamping and weighing device of the present invention by the translation lifting conveyor device, and the conveying lifting platform of the translation lifting conveyor device raises the material bag into place. The driving rod of the cylinder 5-1 of the bag clamping mechanism 5 moves upward, and the push-pull rod 5-3 moves upward. The push-pull rod 5-3 pulls the rear end of the front connecting rod 5-4 and the front end of the rear connecting rod 5-5 to move upward respectively, and the front end of the front connecting rod 5-4 and the rear end of the rear connecting rod 5-5 push the upper end of the front clamping arm 5-6 and the upper end of the rear clamping arm 5-7 to move outward respectively, and the arm body of the front clamping arm 5-6 and the arm body of the rear clamping arm 5-7 are respectively passed through The front long pin 5-2-1 and the rear long pin 5-2-2 rotate inward, so that the lower end of the front clamping arm 5-6 and the lower end of the rear clamping arm 5-7 move inward respectively, thereby pushing the front clamping plate 5-9 and the rear clamping plate 5-10 to close with the front bag clamping rubber block 5-11 and the rear bag clamping rubber block 5-12 respectively. The two bag clamping mechanisms 5 run at the same time and clamp the upper ends of the material bag respectively. The conveying lifting platform descends, the weighing sensor 2 obtains the weighing data and transmits it to the processor for processing, and then the conveying lifting platform rises, and the bag clamping mechanism 5 releases the material bag. If the weight of the material bag is qualified, it will be sent to the next process by the translation lifting conveyor. If the weight of the material bag is unqualified, it will return to the previous process to add or reduce material.

[0028] After testing, the utility model adopts the upper weighing method when reweighing and inspecting the material after filling and weighing. The material bag can remain in a vertical state during weighing, the center of gravity is stable, the weighing mechanism does not shake, and the stability is good, which ensures the accuracy of the weighing data and the progress of the material packaging production, and achieves good results.

Claims

1. A bag-clamping weighing device for material packaging production, comprising a frame (1), characterized in that: It also includes a weighing sensor (2), a sensor mounting plate (3), a clamp mounting plate (4) and two bag clamping mechanisms (5), wherein the clamp mounting plate (4) is horizontally arranged in front of the frame (1), and the sensor mounting plate (3) is vertically arranged in the center of the top surface of the clamp mounting plate (4), the front end of the weighing sensor (2) is fixedly connected to the sensor mounting plate (3), and the rear end of the weighing sensor (2) is fixedly connected to the frame (1), and the two bag clamping mechanisms (5) are symmetrically arranged at the left and right ends of the clamp mounting plate (4).

2. The bag clamping and weighing device for material packaging production according to claim 1 is characterized in that: The bag clamping mechanism (5) comprises a cylinder (5-1), a fixing plate (5-2), a push-pull rod (5-3), a front connecting rod (5-4), a rear connecting rod (5-5), a front clamp arm (5-6) and a rear clamp arm (5-7), wherein the cylinder (5-1) is mounted above one end of the clamp mounting plate (4), a driving rod of the cylinder (5-1) passes downward through the clamp mounting plate (4), an upper end of the push-pull rod (5-3) is fixedly connected to the driving rod of the cylinder (5-1), one end of the front connecting rod (5-4) and one end of the rear connecting rod (5-5) are respectively connected to the push-pull rod ( The front connecting rod (5-4) and the rear connecting rod (5-5) are rotatably connected to the upper end of the front clamp arm (5-6) and the upper end of the rear clamp arm (5-7), respectively. The fixed plate (5-2) is vertically arranged below one end of the clamp mounting plate (4) and on the side of the driving rod of the cylinder (5-1). The upper end of the fixed plate (5-2) is fixedly connected to the clamp mounting plate (4). The arm body of the front clamp arm (5-6) and the arm body of the rear clamp arm (5-7) are rotatably connected to the front end and the rear end of the fixed plate (5-2), respectively.

3. The bag clamping and weighing device for material packaging production according to claim 2 is characterized in that: There are two fixed plates (5-2), and the fixed plates (5-2) are in a frame shape with an opening downward. The two fixed plates (5-2) are respectively and vertically symmetrically arranged on the left and right sides of the cylinder (5-1) driving rod below one end of the clamp mounting plate (4). A connecting plate (5-8) is respectively fixedly arranged between the front ends and the rear ends of the upper parts of the two fixed plates (5-2). The upper ends of the two connecting plates (5-8) are respectively fixedly connected to the clamp mounting plate (4). There are two push-pull rods (5-3), and the upper ends of the two push-pull rods (5-3) are fixedly connected by a connecting block (5-3-1). The upper end of the connecting block (5-3-1) is fixedly connected to the driving rod of the cylinder (5-1); a front center pin shaft (5-3-2) and a rear center pin shaft (5-3-3) are fixedly arranged between the front ends and rear ends of the lower parts of the two push-pull rods (5-3); there are two front connecting rods (5-4) and two rear connecting rods (5-5); the rear ends of the two front connecting rods (5-4) are fixedly connected by a front shaft sleeve (5-4-1); the rear ends of the two front connecting rods (5-4) and the front shaft sleeve (5-4-1) are embedded in the lower front end between the two push-pull rods (5-3) and connected to the front center pin shaft (5-3- 2) Rotational connection, a front short pin shaft (5-4-2) is fixedly arranged between the front ends of the two front links (5-4), the front ends of the two rear links (5-5) are fixedly connected by a rear axle sleeve (5-5-1), the front ends of the two rear links (5-5) and the rear axle sleeve (5-5-1) are embedded in the lower rear end between the two push-pull rods (5-3), and are rotationally connected to the rear middle pin shaft (5-3-3), a rear short pin shaft (5-5-2) is fixedly arranged between the rear ends of the two rear links (5-5), the upper end of the front clamp arm (5-6) is embedded between the front ends of the two front links (5-4), and The front clamp arm (5-6) is rotatably connected to the front short pin (5-4-2), the arm body of the front clamp arm (5-6) is embedded between the front ends of the lower parts of the two fixed plates (5-2), and is rotatably connected to the fixed plates (5-2) through the front long pin (5-2-1), the upper end of the rear clamp arm (5-7) is embedded between the rear ends of the two rear connecting rods (5-5), and is rotatably connected to the rear short pin (5-5-2), the arm body of the rear clamp arm (5-7) is embedded between the rear ends of the lower parts of the two fixed plates (5-2), and is rotatably connected to the fixed plates (5-2) through the rear long pin (5-2-2).

4. The bag clamping and weighing device for material packaging production according to claim 2 is characterized in that: The lower ends of the front clamp arm (5-6) and the rear clamp arm (5-7) are respectively fixedly mounted with a front clamp plate (5-9) and a rear clamp plate (5-10); the rear end of the lower portion of the front clamp plate (5-9) and the front end of the lower portion of the rear clamp plate (5-10) are respectively fixedly mounted with a front bag rubber block (5-11) and a rear bag rubber block (5-12); the front end of the lower portion of the front clamp plate (5-9) and the rear end of the lower portion of the rear clamp plate (5-10) are respectively fixedly mounted with a front bag detection plate (5-13) and a rear bag detection plate (5-14); the inner ends of the front bag rubber block (5-11) and the inner ends of the rear bag rubber block (5-12) are respectively opened. A front countersunk hole and a rear countersunk hole are provided on the front clamping plate (5-9) and the rear clamping plate (5-10), respectively, with a front through hole and a rear through hole corresponding to the front countersunk hole and the rear countersunk hole; a front bag detection tube (5-13-1) and a rear bag detection tube (5-14-1) are respectively provided on the front bag detection plate (5-13) and the rear bag detection plate (5-14); the front bag detection tube (5-13-1) and the rear bag detection tube (5-14-1) respectively pass through the front through hole and the rear through hole, and respectively abut against the front bag rubber block (5-11) and the rear bag rubber block (5-12) in the front countersunk hole and the rear countersunk hole.

5. The bag clamping and weighing device for material packaging production according to claim 1 is characterized in that: The device further comprises a dust removal cover assembly (6), the dust removal cover assembly (6) comprising a dust removal cover (6-1) and a ventilation pipe (6-2), the dust removal cover (6-1) being arranged above the weighing sensor (2) and fixedly connected to the frame (1), the ventilation pipe (6-2) being arranged at the upper end of the dust removal cover (6-1), one end of the ventilation pipe (6-2) being connected to the upper end of the dust removal cover (6-1), and the other end of the ventilation pipe (6-2) being connected to a dust collecting device.

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