An automatic packaging device for chemical raw materials

Abstract

The present invention discloses an automatic chemical raw material packaging device, which relates to the technical field of chemical raw material packaging. The automatic packaging device includes a quantitative feeding mechanism, a longitudinal heat sealing mechanism, and a transverse heat sealing mechanism. The output end of the quantitative feeding mechanism is communicated with a feeding pipe. The longitudinal heat sealing mechanism is used for heat sealing the longitudinal opening of the packaging bag. The solid raw material conveyed quantitatively is conveyed to the packaging bag through the feeding end of the feeding pipe. The transverse heat sealing mechanism is used for heat sealing the transverse opening of the packaging bag. The transverse heat sealing mechanism includes a first transverse clamping plate, a second transverse clamping plate, a transverse heat sealing driving component, and a material supporting component. The transverse heat sealing driving component is used for controlling the relative movement of the first transverse clamping plate and the second transverse clamping plate. When the first transverse clamping plate and the second transverse clamping plate move towards each other, the lifting plate in the material supporting component intermittently supports the packaging bag loaded with the quantitative solid raw material laterally, so that the packaging bag at the loading position receives a sense of jerk, prompting the solid raw material to be filled and compacted.

Description

Technical Field

[0001] The present invention belongs to the technical field of chemical raw material packaging, and particularly relates to an automatic chemical raw material encapsulation device. Background Art

[0002] Chemical raw materials refer to the basic substances used in the chemical industry to produce various chemicals. According to different uses and properties, chemical raw materials can be divided into many categories, such as inorganic chemical raw materials, organic chemical raw materials, etc., and according to the raw material form, they can be divided into solids, liquids and gases. Among them, most solid chemical raw materials are in powder or granular form. After the production of solid chemical raw materials is completed, a packaging machine is needed to quantitatively encapsulate the solid raw materials in a packaging unit, such as a packaging bag, for easy storage and transportation of chemical raw materials.

[0003] However, in the process of quantitatively encapsulating solid chemical raw materials by traditional chemical raw material sealing and packaging equipment, when the solid raw materials are filled unevenly due to gravity feeding and accumulation, local irregular swelling or extrusion wrinkles will occur in the packaging bag, resulting in an irregular shape of the bag and increasing the difficulty of sealing. In severe cases, it may lead to insecure sealing, causing product leakage or damage. Summary of the Invention

[0004] The purpose of the present invention is to provide an automatic chemical raw material encapsulation device with a simple structure and reasonable design to solve the above problems.

[0005] The present invention achieves the above purpose through the following technical solutions:

[0006] An automatic chemical raw material encapsulation device, comprising:

[0007] A quantitative feeding mechanism, the quantitative feeding mechanism is arranged on the workbench, and the output end of the quantitative feeding mechanism is communicated with a feeding pipe fixedly arranged on one side of the workbench. The quantitative feeding mechanism is used to quantitatively transport solid raw materials into the feeding pipe, and the outer side of the feeding pipe is covered with a packaging bag to be heat-sealed;

[0008] A longitudinal heat-sealing mechanism, the longitudinal heat-sealing mechanism is arranged on the workbench. The longitudinal heat-sealing mechanism is used to heat-seal the longitudinal opening of the packaging bag covered on the outer side of the feeding pipe. After longitudinal heat-sealing, the packaging bag is shifted to the loading position by a material pulling mechanism;

[0009] A transverse heat sealing mechanism, wherein the transverse heat sealing mechanism is arranged on a workbench, and the transverse heat sealing mechanism is located below the longitudinal heat sealing mechanism, and the quantitatively conveyed solid raw materials are conveyed to the packaging bag through the discharge end of the discharge pipe, and the transverse heat sealing mechanism is used to heat seal the transverse opening of the packaging bag, wherein the transverse heat sealing mechanism includes a first transverse splint, a second transverse splint, a transverse heat sealing drive assembly and a supporting assembly, wherein the output end of the transverse heat sealing drive assembly is respectively connected to the first transverse splint and the second transverse splint for transmission, and the transverse heat sealing drive assembly is used to control the relative movement of the first transverse splint and the second transverse splint, and when the first transverse splint and the second transverse splint move toward each other, the lifting plate in the supporting assembly intermittently supports the packaging bag loaded with quantitative solid raw materials laterally.

[0010] As a further optimization scheme of the present invention, the material supporting assembly includes a rack, a meshing gear, a turntable and a limit rod, the first transverse clamping plate and the second transverse clamping plate are respectively fixedly connected to a connecting rod, the connecting rod is fixedly connected to the rack, the rack meshes with the meshing gear, the meshing gear is rotatably connected to the bracket through the gear shaft, the bracket is fixedly arranged on the workbench, the gear shaft output end of the meshing gear is fixedly connected to the turntable, and the end edge of the turntable away from the meshing gear is rotatably connected to the lifting plate, and the bracket is also fixedly connected to the limit rod, and a limit slot is provided on the material lifting plate, and the limit rod is slidably connected to the material lifting plate through the limit slot, wherein the material lifting plates arranged in pairs are symmetrically arranged on both sides of the packaging bag;

[0011] When the first transverse splint and the second transverse splint move relative to each other, the racks corresponding to the first transverse splint and the second transverse splint move synchronously, wherein when the lifting end of the lifting plate moves toward the side of the packaging bag, the lifting end of the lifting plate moves upward; when the lifting end of the lifting plate moves toward the side of the packaging bag, the lifting end of the lifting plate moves downward.

[0012] As a further optimization scheme of the present invention, the bracket is fixed on the base, the base is fixed on one side of the workbench, a support plate is provided above the base, a first spring is provided between the support plate and the base, one end of the first spring is fixedly connected to the base, and the other end of the first spring is fixedly connected to the support plate, and the packaging bag to be loaded with quantitative solid raw materials is located on the side of the support plate away from the base.

[0013] As a further optimization scheme of the present invention, the material supporting assembly also includes a cutting assembly, which includes a dividing knife and a clamping and extending assembly. The dividing knife is fixedly arranged on the second transverse splint and is arranged toward the first transverse splint. The clamping and extending assembly is arranged on the second transverse splint. A giveway groove is provided on the first transverse splint, and the giveway groove is arranged corresponding to the dividing knife. When the first transverse splint and the second transverse splint move toward each other until the dividing knife is located before the giveway groove, the clamping and extending assembly is used to first clamp and seal the transverse opening of the packaging bag above the dividing knife, and then clamp and seal the transverse opening of the packaging bag below the dividing knife.

[0014] As a further optimization scheme of the present invention, the clamping and extending assembly includes a first sub-clamp and a second sub-clamp, and the first sub-clamp and the second sub-clamp are respectively slidably connected to the second transverse clamp, and one end of the first sub-clamp located inside the second transverse clamp and one end of the second sub-clamp located inside the second transverse clamp are respectively fixedly connected to the second spring, the first sub-clamp is located above the dividing knife, and the second sub-clamp is located below the dividing knife, and when the second transverse clamp is in the initial position, the position of one end of the second sub-clamp facing the first transverse clamp is between the position of one end of the first sub-clamp facing the first transverse clamp and the blade position of the dividing knife.

[0015] As a further optimized solution of the present invention, the transverse heat-sealing driving assembly includes a transverse heat-sealing driving member, a main shaft, a second driving cam, a second driven cam, a first shifting plate, a second shifting plate, a first moving frame and a second moving frame. The transverse heat-sealing driving member is fixedly arranged on the workbench through a mounting seat. The output end of the transverse heat-sealing driving member is fixedly connected with the main shaft. A pair of second driving cams are fixedly connected to the main shaft. The pair of second driving cams are symmetrically arranged about the axis of the main shaft. The arc side wall of the second driving cam frictionally abuts against the second driven cam. The second driven cam corresponding to the first transverse clamping plate is fixedly arranged on the first shifting plate. The first shifting plate is fixedly connected with the first moving frame. One end of the first moving frame located outside the workbench is fixedly connected with the first transverse clamping plate. The first moving frame is slidably mounted on a pair of first guide wheels. The first guide wheels are rotatably mounted on a mounting frame. The mounting frame is fixedly arranged on the mounting seat. The second driven cam corresponding to the second transverse clamping plate is fixedly arranged on the second shifting plate. The second shifting plate is fixedly connected with the second moving frame. One end of the second moving frame located outside the workbench is fixedly connected with the second transverse clamping plate. The second moving frame is slidably connected to the first moving frame. And a pair of second guide wheels are arranged on the side of the second shifting plate. The first moving frame is slidably connected to the second guide wheels. Wherein, guide rods are respectively fixedly connected to the sides of the first shifting plate and the second shifting plate away from the main shaft. The ends of the guide rods away from the main shaft penetrate through the side plate and are slidably connected with the side plate. The side plate is fixedly connected with the mounting frame. A third spring is sleeved on the guide rod.

[0016] As a further optimized solution of the present invention, the longitudinal heat-sealing mechanism includes a longitudinal clamping plate, a driven swing rod, a driving swing rod, a swing limiting shaft, a first driven cam and a first driving cam. A first driving cam is fixedly connected to the main shaft. The arc side of the first driving cam frictionally abuts against the first driven cam. The first driven cam is rotatably connected to the driving swing rod. One end of the driving swing rod away from the first driven cam is fixedly connected with the driven swing rod. One end of the driven swing rod away from the driving swing rod penetrates to the outside of the workbench and is fixedly connected with the longitudinal clamping plate. The fixed connection part of the driven swing rod and the driving swing rod is rotatably connected to the swing limiting shaft. A torsion spring is sleeved on the swing limiting shaft. And the swing limiting shaft is fixedly arranged on the inner wall of the workbench. Wherein, the first driving cams are arranged in pairs. The longitudinal clamping plate corresponds to the first cam. And the pair of first driving cams are symmetrically arranged about the axis of the main shaft.

[0017] As a further optimization scheme of the present invention, the pulling mechanism includes a pulling wheel, a pulling drive and a transmission gear. The pulling wheels are arranged in pairs, and the paired pulling wheels are located between the longitudinal heat sealing mechanism and the transverse heat sealing mechanism, and the longitudinal heat sealing position of the packaging bag wrapped on the outside of the discharge tube is located between the pulling wheels and frictionally abuts against the pulling wheels. The input ends of the pulling wheels are respectively fixedly connected to the transmission shafts, and the transmission shafts are correspondingly fixedly connected to transmission gears. The input end of one of the transmission gears is transmission-connected to the pulling drive, and the pulling drive is fixedly arranged on the workbench. Driven by the pulling drive, the paired pulling wheels rotate in opposite directions and pull the longitudinally heat-sealed packaging bags toward the loading position.

[0018] As a further optimization scheme of the present invention, the quantitative unloading mechanism includes a unloading drive, a lower limit plate, an upper limit plate, a limit cylinder and a unloading hopper, the unloading drive is arranged on the workbench, the output shaft end of the unloading drive is fixedly connected to the limit cylinder, and the limit cylinder is located between the upper limit plate and the lower limit plate, the upper limit plate is fixedly arranged on the material storage box, the material storage box is arranged on one side of the workbench, and a transition pipe is installed at the discharge end of the material storage box, the lower limit plate is fixedly arranged on the workbench through a support seat, wherein a unloading cavity is opened on the limit cylinder, the transition pipe is connected with the unloading cavity through the upper through hole opened on the upper limit plate, the unloading hopper is fixedly arranged on one side of the workbench and connected with the input end of the unloading pipe, and the unloading hopper is connected with the unloading cavity through the lower through hole opened on the lower limit plate.

[0019] As a further optimization scheme of the present invention, the outside of the discharge tube is provided with a gathering frame, which is fixedly arranged on one side of the workbench. The workbench is also provided with a discharge mechanism, which includes a limit frame, a first guide rod, a second guide rod and a vertical frame. The vertical frame is fixedly arranged on the workbench, and the limit frame, the first guide rod and the second guide rod are rotatably connected on the vertical frame. The limit frame is provided with a packaging bag reel, and the discharge end of the packaging bag successively bypasses the first guide rod and the second guide rod and passes through the gap between the gathering frame and the discharge tube.

[0020] The present invention has at least the following beneficial effects: An automatic packaging device for chemical raw materials provided by the present invention is provided with a quantitative feeding mechanism, a longitudinal heat-sealing mechanism and a transverse heat-sealing mechanism. By means of the longitudinal heat-sealing mechanism, the longitudinal opening of the sheet-shaped packaging bag is heat-sealed, and based on the quantitative feeding mechanism, a fixed volume of solid chemical raw materials is conveyed into the packaging bag. After the packaging bag at the loading position is filled with solid raw materials, when the first transverse clamping plate and the second transverse clamping plate move towards each other, the paired lifting plates laterally push the packaging bag obliquely upwards, so as to gather the expansion caused by uneven local filling distribution, or the packaging bag that is locally squeezed and wrinkled is pushed and flattened again. When the lifting plate moves away from the packaging bag, the chemical raw materials pull down the packaging bag under the action of gravity to make the bag stretch regularly. When the lifting plate repeats the above actions, and the chemical raw materials are repeatedly subjected to a sense of jerk, it is ensured that the raw materials are evenly and fully filled in the packaging bag;

[0021] And after the packaging bag is laterally lifted and lowered, under the action of gravity, the packaging bag presses down on the supporting plate, so that under the elastic force of the first spring, the supporting plate vibrates, prompting the sense of jerk received by the packaging bag each time to be buffered and weakened in a decreasing manner, so that the chemical raw materials in the packaging bag are filled solidly;

[0022] In addition, when the first transverse clamping plate and the second transverse clamping plate move towards each other, first, the first auxiliary clamping plate abuts against the first transverse clamping plate to clamp and fix the packaging bag, and then by means of the abutment of the first transverse clamping plate and the second auxiliary clamping plate to clamp and fix the packaging bag, the part of the packaging bag to be divided corresponding to the dividing knife is straightened, which is convenient for the dividing knife to divide. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is the overall structural schematic diagram of the present invention;

[0024] Figure 2 is of the present invention Figure 1 side structural schematic diagram;

[0025] Figure 3 is the partial structural schematic diagram of the transverse heat-sealing mechanism of the present invention;

[0026] Figure 4 is of the present invention Figure 3 side structure and the position schematic diagram of the feeding pipe;

[0027] Figure 5 is of the present invention Figure 4 enlarged view at A in;

[0028] Figure 6 is the partial cross-sectional structural schematic diagram of the first transverse clamping plate and the second transverse clamping plate of the present invention when they are in the clamping and heat-sealing position;

[0029] Figure 7It is another partial structural schematic diagram of the transverse heat-sealing mechanism of the present invention;

[0030] Figure 8 It is a partial sectional structural schematic diagram of the quantitative feeding mechanism of the present invention;

[0031] Figure 9 It is a partial structural schematic diagram of the material pulling mechanism and the feeding pipe of the present invention;

[0032] Figure 10 It is a structural schematic diagram of the longitudinal heat-sealing mechanism and the transverse heat-sealing assembly of the present invention;

[0033] Figure 11 It is a partial top-view structural schematic diagram of the transverse heat-sealing assembly of the present invention;

[0034] Figure 12 It is an assembly structural schematic diagram of components such as the second shifting plate, the second shifting frame, and the second driven cam of the present invention;

[0035] Figure 13 It is an assembly structural schematic diagram of the mounting seat and the first guide wheel of the present invention.

[0036] In the figure: 1. Transverse heat-sealing mechanism; 101. First transverse clamping plate; 102. Second transverse clamping plate; 103. First auxiliary clamping plate; 104. Second auxiliary clamping plate; 105. Cutting knife; 106. Connecting rod; 107. Rack; 108. Meshing gear; 109. Turntable; 111. Lifting plate; 112. Limiting groove; 113. Limiting rod; 114. Bracket; 115. Base; 116. Support plate; 117. First spring; 118. Relief groove; 119. Second spring; 120. Unloading driving part; 121. Pushing plate; 122. Second moving frame; 123. First moving frame; 124. Second shifting plate; 125. Mounting seat; 126. Second driving cam; 127. Second driven cam; 128. Mounting frame; 129. First guide wheel; 130. First shifting plate; 131. Side plate; 132. Guide rod; 133. Third spring; 134. Second guide wheel;

[0037] 2. Material pulling mechanism; 21. Material pulling wheel; 22. Material pulling driving part; 23. Transmission gear; 24. Transmission shaft;

[0038] 3. Longitudinal heat-sealing mechanism; 31. Longitudinal clamping plate; 32. Driven swing rod; 321. Driving swing rod; 33. Swing limiting shaft; 34. First driven cam; 35. First driving cam; 36. Main shaft; 4. Workbench; 5. Storage bin;

[0039] 6. Quantitative feeding mechanism; 61. Transition pipe; 62. Upper limiting plate; 63. Limiting cylinder; 631. Feeding cavity; 64. Lower limiting plate; 65. Support seat; 66. Feeding driving part;

[0040] 7. Discharging mechanism; 71. Vertical frame; 72. Limiting frame; 73. First guide rod; 74. Second guide rod; 8. Discharging pipe; 81. Discharging hopper; 82. Retracting frame. DETAILED DESCRIPTION

[0041] The present application is described in further detail below in conjunction with the accompanying drawings. It is necessary to point out that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technicians in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0042] In one embodiment, if Figure 1 、 Figure 2 and Figure 3 As shown, the present invention provides an automatic packaging device for chemical raw materials, comprising:

[0043] A quantitative feeding mechanism 6 is provided on the workbench 4, and an output end of the quantitative feeding mechanism 6 is connected to a feeding pipe 8 fixedly provided on one side of the workbench 4. The quantitative feeding mechanism 6 is used to quantitatively feed the solid raw material into the feeding pipe 8. The outer side of the feeding pipe 8 is covered with a packaging bag to be heat-sealed;

[0044] A longitudinal heat-sealing mechanism 3 is provided on a workbench 4 and is used to heat-seal the longitudinal opening of the packaging bag wrapped around the outer side of the discharge tube 8. The longitudinally heat-sealed packaging bag is shifted to the loading position by the pulling mechanism 2. At this time, the discharge end of the discharge tube 8 is located in the longitudinally heat-sealed packaging bag, thereby quantitatively conveying the chemical solid raw material into the packaging bag through the discharge tube 8, waiting to be laterally sealed by the transverse heat-sealing mechanism 1, thereby realizing automatic packaging of the chemical raw material;

[0045] Transverse heat sealing mechanism 1, such as Figure 2 and Figure 3 As shown, the transverse heat sealing mechanism 1 is arranged on the workbench 4, and the transverse heat sealing mechanism 1 is located below the longitudinal heat sealing mechanism 3, and the quantitatively conveyed solid raw materials are conveyed to the packaging bag through the discharge end of the discharge pipe 8, and the transverse heat sealing mechanism 1 is used to heat seal the transverse opening of the packaging bag, wherein the transverse heat sealing mechanism 1 includes a first transverse splint 101, a second transverse splint 102, a transverse heat sealing drive assembly and a supporting assembly, and the output end of the transverse heat sealing drive assembly is respectively connected to the first transverse splint 101 and the second transverse splint 102 for transmission, and the transverse heat sealing drive assembly is used to control the relative movement of the first transverse splint 101 and the second transverse splint 102. When the first transverse splint 101 and the second transverse splint 102 move toward each other, the lifting plate 111 in the supporting assembly intermittently supports the packaging bag loaded with quantitative solid raw materials laterally.

[0046] Through the above device, the sheet-shaped packaging bag is subjected to step-by-step automatic heat sealing, and the chemical solid raw materials are quantitatively packaged in the packaging bag. During the horizontal heat sealing, that is, when the first horizontal clamping plate 101 and the second horizontal clamping plate 102 move relative to each other, with the help of the lifting plate 111 in the material supporting assembly, the packaging bag loaded with the quantitative solid raw materials is intermittently supported laterally, so that the packaging bag is laterally pushed, promoting the gathering of the expansion caused by uneven local filling distribution, or the packaging bag that is locally squeezed and wrinkled is pushed and flattened again. When the lifting plate 111 moves away from the packaging bag, the chemical raw materials pull down the packaging bag under the action of gravity to make the bag stretch regularly, and make the chemical raw materials feel a sense of jerk, ensuring that the raw materials are evenly and fully filled in the packaging bag.

[0047] It should be noted that the packaging bag used for packaging the chemical solid raw materials in the present invention is a plastic bag, such as a polyethylene (PE) bag, a polypropylene (PP) bag, etc. commonly used, which has good chemical corrosion resistance and compressive resistance, and is sealed by heat sealing. Through the heat sealing technology, the opening part of the plastic bag can be completely sealed, effectively preventing the entry of external air, moisture, humidity, pollutants or other impurities, and maintaining the quality and purity of the raw materials.

[0048] Exemplarily, continue to refer to Figure 3 and Figure 4 , the material supporting assembly includes a rack 107, a meshing gear 108, a turntable 109 and a limiting rod 113. The first horizontal clamping plate 101 and the second horizontal clamping plate 102 are respectively fixedly connected with a connecting rod 106, and a rack 107 is fixedly connected to the connecting rod 106. The rack 107 is meshed and driven with a meshing gear 108. The meshing gear 108 is rotatably connected to a bracket 114 through a gear shaft. The bracket 114 is fixedly arranged on the workbench 4. The output end of the gear shaft of the meshing gear 108 is fixedly connected with a turntable 109. One end edge of the turntable 109 away from the meshing gear 108 is rotatably connected with a lifting plate 111. A limiting rod 113 is also fixedly connected to the bracket 114. A limiting groove 112 is formed on the lifting plate 111. The limiting rod 113 is slidably connected with the lifting plate 111 through the limiting groove 112. Among them, the paired lifting plates 111 are symmetrically arranged on both sides of the packaging bag;

[0049] When the first horizontal clamping plate 101 and the second horizontal clamping plate 102 move relative to each other, the racks 107 correspondingly arranged on the first horizontal clamping plate 101 and the second horizontal clamping plate 102 move synchronously. Among them, when the lifting end of the lifting plate 111 moves towards the side of the packaging bag, the lifting end of the lifting plate 111 moves upward; when the lifting end of the lifting plate 111 moves away from the side of the packaging bag, the lifting end of the lifting plate 111 moves downward.

[0050] Such as Figure 4As shown, the first horizontal clamping plate 101 and the second horizontal clamping plate 102 are in the initial position. After the chemical raw materials are quantitatively filled in the packaging bag, the packaging bag is laterally expanded by the chemical raw materials, and the first horizontal clamping plate 101 and the second horizontal clamping plate 102 move relative to each other. At this time, under the meshing transmission of the rack 107 and the meshing gear 108, the rotating directions of the two lifting plates 111 corresponding to the turntables 109 are opposite. Taking the turntable 109 corresponding to the first horizontal clamping plate 101 as an example, the corresponding rack 107 moves to the right, and the turntable 109 rotates counterclockwise. During the process that the rotation connection point of the lifting plate 111 and the turntable 109 moves from the lowest position of the rotation trajectory to the highest position, the lifting end of the lifting plate 111, that is Figure 4 the turning structure part of the L-shaped lifting plate 111 shown approaches the packaging bag first and then moves away from the packaging bag during the upward movement, so as to realize the lateral extrusion of the packaging bag, promote the gathering of the expansion caused by uneven local filling distribution, or re-push and flatten the locally squeezed and wrinkled packaging bag. When the lifting plate 111 moves away from the packaging bag, the chemical raw materials pull down the packaging bag under the action of gravity to make the bag stretch regularly, and make the chemical raw materials feel a sense of jerk, breaking the filling distribution mode of the chemical raw materials and ensuring that the raw materials are evenly and fully filled in the packaging bag.

[0051] It should be noted that continue to refer to Figure 3 and Figure 4 , the bracket 114 is fixedly arranged on the base 115, the base 115 is fixedly arranged on one side of the workbench 4, a support plate 116 is arranged above the base 115, a first spring 117 is arranged between the support plate 116 and the base 115, one end of the first spring 117 is fixedly connected with the base 115, and the other end of the first spring 117 is fixedly connected with the support plate 116. The packaging bag to be loaded with a fixed amount of solid raw materials is located on the side of the support plate 116 away from the base 115. After the packaging bag is filled with a fixed amount of chemical raw materials, the support plate 116 is pressed down. When the lifting plate 111 dynamically and intermittently extrudes the side of the packaging bag, during the process of being pushed obliquely upward, the packaging bag is lifted, and after the lifting plate 111 moves away from the packaging bag, under the action of gravity, the packaging bag presses down the support plate 116 again. Under the elastic force of the first spring 117, the support plate 116 drives the packaging bag to vibrate, so that the sense of jerk of the packaging bag continues, thereby promoting the compaction of the chemical raw materials in the packaging bag, avoiding the bulging of the chemical raw materials near the horizontal heat seal, and reducing the sealing difficulty.

[0052] Exemplarily, continue to refer to Figure 4 and Figure 5The material supporting assembly also includes a cutting assembly, which includes a dividing knife 105 and a clamping and stretching assembly. The dividing knife 105 is fixedly arranged on the second transverse splint 102 and is arranged toward the first transverse splint 101. The clamping and stretching assembly is arranged on the second transverse splint 102. A clearance groove 118 is provided on the first transverse splint 101. The clearance groove 118 is arranged corresponding to the dividing knife 105. When the first transverse splint 101 and the second transverse splint 102 move toward each other until the dividing knife 105 is located before the clearance groove 118, the clamping and stretching assembly is used to first clamp and seal the transverse opening of the packaging bag above the dividing knife 105, and then clamp and seal the transverse opening of the packaging bag below the dividing knife 105.

[0053] In the above embodiment, the transverse heat seal of the packaging bag above the cutting blade 105 is first clamped and fixed, so that the packaging bag is straightened and tightened under the gravity of the chemical raw material. Then, the transverse heat seal of the packaging bag below the cutting blade 105 is clamped and fixed, so that the packaging bag corresponding to the position where the cutting blade 105 is cutting is in a straightened and tightened state, which facilitates the cutting by the cutting blade 105. After the cutting, the packaging bag filled with a fixed amount of chemical raw material is automatically packaged. After the first transverse clamping plate 101 and the second transverse clamping plate 102 move away from each other to the initial position, the unloading drive member 120 drives the push plate 121 to push the packaged chemical raw material away from the loading position. Exemplarily, the unloading drive member 120 is a hydraulic telescopic cylinder, an electric telescopic cylinder, an electrical telescopic cylinder, etc., which are not limited here. After the unloading is completed, the longitudinally heat-sealed packaging bag can continue to be pulled by the pulling mechanism 2 to move to the loading position.

[0054] For example, see Figure 5 and Figure 6 The clamping and extending assembly includes a first sub-clamping plate 103 and a second sub-clamping plate 104, and the first sub-clamping plate 103 and the second sub-clamping plate 104 are respectively slidably connected to the second transverse clamping plate 102, and one end of the first sub-clamping plate 103 is located inside the second transverse clamping plate 102 and the second sub-clamping plate 104 is located inside the second transverse clamping plate 102, and are respectively fixedly connected to the second spring 119, the first sub-clamping plate 103 is located above the dividing knife 105, and the second sub-clamping plate 104 is located below the dividing knife 105, and when the second transverse clamping plate 102 is in the initial position, the position of one end of the second sub-clamping plate 104 toward the first transverse clamping plate 101 is between the position of one end of the first sub-clamping plate 103 toward the first transverse clamping plate 101 and the blade position of the dividing knife 105.

[0055] During the process of the first transverse clamping plate 101 and the second transverse clamping plate 102 moving towards each other to the heat-sealing position, the first auxiliary clamping plate 103 first abuts against and clamps the packaging bag with the first transverse clamping plate 101. The first auxiliary clamping plate 103 is squeezed and slides away from the first transverse clamping plate 101, compressing the corresponding second spring 119. Then, the second auxiliary clamping plate 104 abuts against and clamps the packaging bag with the first transverse clamping plate 101. The second auxiliary clamping plate 104 is squeezed and slides away from the first transverse clamping plate 101, compressing the corresponding second spring 119, so that the cutting knife 105 fits against the straightened and tightened packaging bag and cuts it open.

[0056] Exemplarily, continue to refer to Figure 10 and Figure 11 As shown in FIGS. 4 and 5, the transverse heat-sealing driving assembly includes a transverse heat-sealing driving member, a main shaft 36, a second driving cam 126, a second driven cam 127, a first shifting plate 130, a second shifting plate 124, a first moving bracket 123 and a second moving bracket 122. The transverse heat-sealing driving member is fixedly arranged on the workbench 4 through a mounting seat 125. The output end of the transverse heat-sealing driving member is fixedly connected with the main shaft 36. A pair of second driving cams 126 are fixedly connected to the main shaft 36. The pair of second driving cams 126 are symmetrically arranged about the axis of the main shaft 36. The arc side wall of the second driving cam 126 frictionally abuts against the second driven cam 127. The second driven cam 127 corresponding to the first transverse clamping plate 101 is fixedly arranged on the first shifting plate 130. The first shifting plate 130 is fixedly connected with the first moving bracket 123. One end of the first moving bracket 123 located outside the workbench 4 is fixedly connected with the first transverse clamping plate 101. The first moving bracket 123 is slidably mounted on a pair of first guide wheels 129. The first guide wheels 129 are rotatably mounted on a mounting frame 128. The mounting frame 128 is fixedly arranged on the mounting seat 125. The second driven cam 127 corresponding to the second transverse clamping plate 102 is fixedly arranged on the second shifting plate 124. The second shifting plate 124 is fixedly connected with the second moving bracket 122. One end of the second moving bracket 122 located outside the workbench 4 is fixedly connected with the second transverse clamping plate 102. The second moving bracket 122 is slidably connected to the first moving bracket 123. A pair of second guide wheels 134 are mounted on the side of the second shifting plate 124, as shown in Figure 12As shown, the first moving frame 123 is slidably connected to the second guide wheel 134. Through the limiting constraints of the second moving frame 122 and the second guide wheel 134 on the first moving frame 123 respectively, the reciprocating movement of the second displacement plate 124 is ensured to be stable. Among them, guide rods 132 are fixedly connected to the sides of the first displacement plate 130 and the second displacement plate 124 that are away from the main shaft 36 respectively. The ends of the guide rods 132 away from the main shaft 36 penetrate through the side plate 131 and are slidably connected to the side plate 131. The side plate 131 is fixedly connected to the mounting frame 128. A third spring 133 is sleeved on the guide rod 132. Among them, the third spring 133 on one side of the first displacement plate 130 is located between the first displacement plate 130 and the side plate 131, and the third spring 133 on one side of the second displacement plate 124 is located between the second displacement plate 124 and the side plate 131.

[0057] In the above embodiment, driven by the lateral heat-sealing driving member, the main shaft 36 drives the second driving cam 126 to rotate. Under the transmission of the second driven cam 127, the first displacement plate 130 drives the first lateral clamping plate 101 to move synchronously through the first moving frame 123. At the same time, the second displacement plate 124 drives the second lateral clamping plate 102 to move synchronously through the second moving frame 122. Among them, since the first displacement plate 130 and the second displacement plate 124 move relatively, the first lateral clamping plate 101 and the second lateral clamping plate 102 move relatively, so as to realize the heat-sealing processing of the lateral heat-sealing opening of the packaging bag. Among them, under the elastic force of the third spring 133, the second driven cam 127 is always in frictional contact with the second driving cam 126 for transmission.

[0058] It should be noted that the lateral heat-sealing driving member in the above embodiment is a driving motor.

[0059] Exemplarily, continue to refer to Figure 2 and Figure 10, the longitudinal heat-sealing mechanism 3 includes longitudinal clamping plates 31, driven swing rods 32, driving swing rods 321, swing limiting shafts 33, first driven cams 34 and first driving cams 35. A first driving cam 35 is fixedly connected to the main shaft 36. The arc side of the first driving cam 35 is in frictional contact with a first driven cam 34. The first driven cam 34 is rotatably connected to the driving swing rod 321. One end of the driving swing rod 321 away from the first driven cam 34 is fixedly connected to a driven swing rod 32. One end of the driven swing rod 32 away from the driving swing rod 321 penetrates outside the workbench 4 and is fixedly connected to the longitudinal clamping plate 31. The fixed connection part of the driven swing rod 32 and the driving swing rod 321 is rotatably connected to the swing limiting shaft 33. A torsion spring is sleeved on the swing limiting shaft 33, and the swing limiting shaft 33 is fixedly arranged on the inner wall of the workbench 4. Among them, the first driving cams 35 are arranged in pairs, the longitudinal clamping plates 31 are arranged corresponding to the first cams, and the paired first driving cams 35 are symmetrically arranged about the axis of the main shaft 36. Among them, the relative movement period of the longitudinal clamping plates 31 is the same as the relative movement period of the first transverse clamping plate 101 and the second transverse clamping plate 102.

[0060] Continue to refer to Figure 9 , the material pulling mechanism 2 includes material pulling wheels 21, a material pulling driving member 22 and transmission gears 23. The material pulling wheels 21 are arranged in pairs. The paired material pulling wheels 21 are located between the longitudinal heat-sealing mechanism 3 and the transverse heat-sealing mechanism 1, and the longitudinal heat-sealing position of the packaging bag covering the outside of the blanking pipe 8 is located between the material pulling wheels 21 and is in frictional contact with the material pulling wheels 21. The input ends of the material pulling wheels 21 are respectively fixedly connected with transmission shafts 24, and transmission gears 23 are correspondingly fixedly connected to the transmission shafts 24. The input end of one of the transmission gears 23 is in transmission connection with a material pulling driving member 22. The material pulling driving member 22 is fixedly arranged on the workbench 4. Driven by the material pulling driving member 22, the paired material pulling wheels 21 rotate in opposite directions and pull the longitudinally heat-sealed packaging bag towards the loading position. Among them, the material pulling driving member 22 is a driving motor.

[0061] After the longitudinal heat-sealing is completed by the longitudinal clamping plates 31, the packaging bag can be pulled to the loading position by the material pulling wheels 21. Among them, by means of the reverse rotation of the paired material pulling wheels 21, and the rotation direction of the material pulling wheels 21 is tangent to the blanking direction of the packaging bag. Among them, the circumferential surface of the material pulling wheels 21 is provided with patterns to increase the friction force of the material pulling wheels 21 on the packaging bag.

[0062] Continue to refer to Figure 8, the quantitative feeding mechanism 6 includes a feeding driving member 66, a lower limiting plate 64, an upper limiting plate 62, a limiting cylinder 63, and a feeding hopper 81. The feeding driving member 66 is arranged on the workbench 4, and the output shaft end of the feeding driving member 66 is fixedly connected to the limiting cylinder 63. The limiting cylinder 63 is located between the upper limiting plate 62 and the lower limiting plate 64. The upper limiting plate 62 is fixedly arranged on the storage box 5. The storage box 5 is arranged on one side of the workbench 4, and a transition pipe 61 is installed at the discharging end of the storage box 5. The lower limiting plate 64 is fixedly arranged on the workbench 4 through a support seat 65. Among them, a feeding cavity 631 is formed on the limiting cylinder 63. The transition pipe 61 is communicated with the feeding cavity 631 through an upper through hole formed on the upper limiting plate 62. The feeding hopper 81 is fixedly arranged on one side of the workbench 4 and is communicated with the input end of the feeding pipe 8. The feeding hopper 81 is communicated with the feeding cavity 631 through a lower through hole formed on the lower limiting plate 64.

[0063] The feeding driving member 66 drives the limiting cylinder 63 to rotate intermittently and periodically, so that the feeding cavity 631 communicated with the transition pipe 61 is filled with a fixed amount of chemical raw materials and rotates with the limiting cylinder 63 until the feeding cavity 631 is communicated with the feeding hopper 81, thereby realizing the quantitative feeding of the chemical raw materials into the feeding hopper 81. For example, the feeding driving member 66 is a driving motor.

[0064] Continue to refer to Figure 2 , a converging frame 82 is sleeved outside the feeding pipe 8. The converging frame 82 is fixedly arranged on one side of the workbench 4. A discharging mechanism 7 is further arranged on the workbench 4. The discharging mechanism 7 includes a limiting frame 72, a first guide rod 73, a second guide rod 74, and a vertical frame 71. The vertical frame 71 is fixedly arranged on the workbench 4. The limiting frame 72, the first guide rod 73, and the second guide rod 74 are respectively rotatably connected to the vertical frame 71. A packaging bag reel is sleeved on the limiting frame 72. The discharging end of the packaging bag successively bypasses the first guide rod 73 and the second guide rod 74 and passes through the gap between the converging frame 82 and the feeding pipe 8. As Figure 2 shown by the dotted line in the figure, which indicates the winding track of the packaging bag. The converging frame 82 gradually converges the sheet-shaped packaging bag until the packaging bag is wrapped around the outside of the feeding pipe 8, so as to facilitate the longitudinal splint 31 to heat-seal the longitudinal opening of the packaging bag.

[0065] It should be noted that the longitudinal splint 31, the first transverse splint 101, the second transverse splint 102, the first auxiliary splint 103, and the second auxiliary splint 104 in this application are all electric heating plates.

[0066] It should be noted that when the automatic chemical raw material packaging device is in use, first place the sheet-shaped packaging bag in accordance with Figure 2It is arranged along the dotted track shown. Under the restraint of the folding frame 82 during folding, the packaging bag is wrapped around the outside of the blanking pipe 8, and the longitudinal opening of the packaging bag is heat-sealed by the longitudinal clamping plates 31 in the longitudinal heat-sealing mechanism 3. Then, the longitudinally heat-sealed packaging bag is displaced to the loading position under the action of the pulling wheel 21 in the pulling mechanism 2, as Figure 4 shown. At this time, the first transverse clamping plate 101 and the second transverse clamping plate 102 are in the initial positions, and the packaging bag at the loading position is located between the paired lifting plates 111. Then, the blanking driving member 66 is started, so that the dosing cavity 631 filled with a fixed amount of material in the limiting cylinder 63 rotates and is displaced to a position communicating with the hopper 81, and thus is conveyed through the hopper 81 and the blanking pipe 8 into the packaging bag at the loading position. At this time, the operation of the blanking driving member 66 is stopped, and the packaging bag loaded with a fixed amount of chemical raw materials is supported on the support plate 116;

[0067] Driven by the transverse heat-sealing driving assembly, the first transverse clamping plate 101 and the second transverse clamping plate 102 move towards each other, so that the rack 107 and the meshing gear 108 are engaged and driven. Under the restraint of the turntable 109 and the limiting rod 113, the lifting end of the lifting plate 111 laterally pushes the packaging bag obliquely upward, promoting the gathering of the expansion caused by uneven local filling distribution, or the packaging bag that is locally squeezed and wrinkled is pushed flat again. When the lifting plate 111 moves away from the packaging bag, the chemical raw materials pull down the packaging bag under the action of gravity to make the bag stretch regularly. When the lifting plate 111 repeats the above actions, and the chemical raw materials are repeatedly subjected to a sense of jerk, ensuring that the raw materials are evenly and fully filled in the packaging bag. Among them, while the first transverse clamping plate 101 and the second transverse clamping plate 102 move towards each other to heat-seal the transverse opening of the packaging bag, the paired longitudinal clamping plates 31 also move towards each other to heat-seal the longitudinal opening of the packaging bag that is re-wrapped around the outside of the blanking pipe 8, improving work efficiency;

[0068] At the same time, due to the action of the self-gravity of the chemical raw materials, the packaging bag repeatedly presses down on the support plate 116, so that under the elastic force of the first spring 117, the support plate 116 vibrates, promoting the sense of jerk received by the packaging bag each time to be buffered and weakened in a decreasing manner, making the chemical raw materials in the packaging bag filled fully;

[0069] Next, the first transverse clamping plate 101 first abuts against and clamps the first auxiliary clamping plate 103 to fix the packaging bag, and then the packaging bag is clamped by the abutment of the first transverse clamping plate 101 and the second auxiliary clamping plate 104, so that the part of the packaging bag to be divided corresponding to the dividing knife 105 is straightened, facilitating the division by the dividing knife 105;

[0070] Thus, under the drive of the horizontal heat-sealing drive assembly, the first horizontal clamping plate 101 and the second horizontal clamping plate 102 move away from each other to the initial position, and the discharging drive member 120 drives the push plate 121 to push the packaged bagged chemical raw materials away from the loading position, thereby realizing the process of automatically quantitatively packaging the chemical raw materials into the packaging bag. At this time, continue to start the material pulling mechanism 2 and repeat the above actions.

[0071] The above embodiments only represent several implementation manners of the present invention, and the description thereof is relatively specific and detailed, but it should not be construed as a limitation to the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention.

Claims

1. An automatic chemical raw material packaging device, characterized in that, include: A quantitative feeding mechanism (6), wherein the quantitative feeding mechanism (6) is arranged on the workbench (4), and an output end of the quantitative feeding mechanism (6) is connected to a feeding pipe (8) fixedly arranged on one side of the workbench (4), and the quantitative feeding mechanism (6) is used to quantitatively transport the solid raw material into the feeding pipe (8), and the outer side of the feeding pipe (8) is covered with a packaging bag to be heat-sealed; A longitudinal heat-sealing mechanism (3), the longitudinal heat-sealing mechanism (3) being arranged on a workbench (4), and being used for heat-sealing the longitudinal opening of a packaging bag wrapped around the outside of a feeding tube (8), and the packaging bag after longitudinal heat-sealing is shifted to a loading position via a pulling mechanism (2); A transverse heat sealing mechanism (1), wherein the transverse heat sealing mechanism (1) is arranged on a workbench (4), and the transverse heat sealing mechanism (1) is located below the longitudinal heat sealing mechanism (3), and the quantitatively conveyed solid raw material is conveyed into the packaging bag through the discharge end of the discharge pipe (8), and the transverse heat sealing mechanism (1) is used to heat-seal the transverse opening of the packaging bag, wherein the transverse heat sealing mechanism (1) includes a first transverse clamping plate (101), a second transverse clamping plate (102), a transverse heat sealing drive component and a supporting component, wherein the output end of the transverse heat sealing drive component is respectively connected to the first transverse clamping plate (101) and the second transverse clamping plate (102) in a transmission manner, and the transverse heat sealing drive component is used to control the relative movement of the first transverse clamping plate (101) and the second transverse clamping plate (102), and when the first transverse clamping plate (101) and the second transverse clamping plate (102) move toward each other, the lifting plate (111) in the supporting component intermittently supports the packaging bag loaded with the quantitative solid raw material laterally; The material support assembly includes a rack (107), a meshing gear (108), a turntable (109) and a limit rod (113), the first transverse clamping plate (101) and the second transverse clamping plate (102) are respectively fixedly connected to a connecting rod (106), the connecting rod (106) is fixedly connected to a rack (107), the rack (107) is meshed with a meshing gear (108), the meshing gear (108) is rotatably connected to a bracket (114) through a gear shaft, and the bracket (114) is fixedly set on the workbench (4). The gear shaft output end of the meshing gear (108) is fixedly connected to a turntable (109), and the edge of one end of the turntable (109) away from the meshing gear (108) is rotatably connected to a lifting plate (111). The bracket (114) is also fixedly connected to a limiting rod (113), and a limiting groove (112) is provided on the lifting plate (111). The limiting rod (113) is slidably connected to the lifting plate (111) through the limiting groove (112), wherein the lifting plates (111) arranged in pairs are symmetrically arranged on both sides of the packaging bag; When the first transverse clamping plate (101) and the second transverse clamping plate (102) move relative to each other, the racks (107) corresponding to the first transverse clamping plate (101) and the second transverse clamping plate (102) move synchronously, wherein when the lifting end of the lifting plate (111) moves toward the direction close to the side of the packaging bag, the lifting end of the lifting plate (111) moves upward; when the lifting end of the lifting plate (111) moves toward the direction away from the side of the packaging bag, the lifting end of the lifting plate (111) moves downward; The bracket (114) is fixedly mounted on a base (115), which is fixedly mounted on one side of a workbench (4). A support plate (116) is disposed above the base (115), and a first spring (117) is disposed between the support plate (116) and the base (115). One end of the first spring (117) is fixedly connected to the base (115), and the other end of the first spring (117) is fixedly connected to the support plate (116). A packaging bag to be loaded with a quantitative solid raw material is located on a side of the support plate (116) away from the base (115).

2. The automatic packaging device for a chemical raw material according to claim 1, characterized in that, The material support assembly also includes a cutting assembly, which includes a splitting knife (105) and a clamping and stretching assembly. The splitting knife (105) is fixedly arranged on the second transverse clamping plate (102) and is arranged toward the first transverse clamping plate (101). The clamping and stretching assembly is arranged on the second transverse clamping plate (102). A clearance groove (118) is provided on the first transverse clamping plate (101). The clearance groove (118) is arranged corresponding to the splitting knife (105). When the first transverse clamping plate (101) and the second transverse clamping plate (102) move toward each other until the splitting knife (105) is located before the clearance groove (118), the clamping and stretching assembly is used to first clamp and seal the transverse opening of the packaging bag above the splitting knife (105), and then clamp and seal the transverse opening of the packaging bag below the splitting knife (105).

3. The automatic packaging device for chemical raw materials according to claim 2, wherein, The clamping and stretching assembly includes a first auxiliary clamping plate (103) and a second auxiliary clamping plate (104), the first auxiliary clamping plate (103) and the second auxiliary clamping plate (104) are respectively slidably connected to the second transverse clamping plate (102), one end of the first auxiliary clamping plate (103) located inside the second transverse clamping plate (102) and one end of the second auxiliary clamping plate (104) located inside the second transverse clamping plate (102) are respectively fixedly connected to a second spring (119), the first auxiliary clamping plate (103) is located above the dividing knife (105), the second auxiliary clamping plate (104) is located below the dividing knife (105), and when the second transverse clamping plate (102) is located at the initial position, the position of one end of the second auxiliary clamping plate (104) facing the first transverse clamping plate (101) is between the position of one end of the first auxiliary clamping plate (103) facing the first transverse clamping plate (101) and the blade position of the dividing knife (105).

4. The automatic packaging device for a chemical raw material according to claim 3, characterized in that, The transverse heat-sealing driving assembly includes a transverse heat-sealing driving member, a main shaft (36), a second driving cam (126), a second driven cam (127), a first shifting plate (130), a second shifting plate (124), a first moving bracket (123) and a second moving bracket (122). The transverse heat-sealing driving member is fixedly arranged on the workbench (4) through a mounting seat (125). The output end of the transverse heat-sealing driving member is fixedly connected to the main shaft (36). The second driving cams (126) arranged in pairs are fixedly connected to the main shaft (36). The second driving cams (126) arranged in pairs are symmetrically arranged about the axis of the main shaft (36). The arc side wall of the second driving cam (126) is in frictional contact with the second driven cam (127). The second driven cam (127) corresponding to the first transverse clamping plate (101) is fixedly arranged on the first shifting plate (130). The first shifting plate (130) is fixedly connected to the first moving bracket (123). The end of the first moving bracket (123) located outside the workbench (4) is fixedly connected to the first transverse clamping plate (101). The first moving bracket (123) is slidably mounted on the first guide wheels (129) arranged in pairs. The first guide wheels (129) are rotatably mounted on the mounting frame (128). The mounting frame (128) is fixedly arranged on the mounting seat (125). The second driven cam (127) corresponding to the second transverse clamping plate (102) is fixedly arranged on the second shifting plate (124). The second shifting plate (124) is fixedly connected to the second moving bracket (122). The end of the second moving bracket (122) located outside the workbench (4) is fixedly connected to the second transverse clamping plate (102). The second moving bracket (122) is slidably connected to the first moving bracket (123). And paired second guide wheels (134) are mounted on the side of the second shifting plate (124). The first moving bracket (123) is slidably connected to the second guide wheels (134). Wherein, guide rods (132) are respectively fixedly connected to the sides of the first shifting plate (130) and the second shifting plate (124) far away from the main shaft (36). The ends of the guide rods (132) far away from the main shaft (36) penetrate through the side plate (131) and are slidably connected to the side plate (131). The side plate (131) is fixedly connected to the mounting frame (128). A third spring (133) is sleeved on the guide rod (132).

5. An automatic chemical raw material packaging device according to claim 4, characterized in that, The longitudinal heat-sealing mechanism (3) includes a longitudinal clamping plate (31), a driven swing rod (32), a driving swing rod (321), a swing limiting shaft (33), a first driven cam (34), and a first driving cam (35). A first driving cam (35) is fixedly connected to the main shaft (36). The arc side of the first driving cam (35) is in frictional contact with the first driven cam (34). The first driven cam (34) is rotatably connected to the driving swing rod (321). One end of the driving swing rod (321) away from the first driven cam (34) is fixedly connected to the driven swing rod (32). One end of the driven swing rod (32) away from the driving swing rod (321) penetrates outside the workbench (4) and is fixedly connected to the longitudinal clamping plate (31). The fixed connection part of the driven swing rod (32) and the driving swing rod (321) is rotatably connected to the swing limiting shaft (33). A torsion spring is sleeved on the swing limiting shaft (33), and the swing limiting shaft (33) is fixedly arranged on the inner wall of the workbench (4). Among them, the first driving cams (35) are arranged in pairs. The longitudinal clamping plate (31) is arranged corresponding to the first cams, and the paired first driving cams (35) are symmetrically arranged about the axis of the main shaft (36).

6. The automatic packaging device for chemical raw materials according to claim 5, characterized in that, The material pulling mechanism (2) includes a material pulling wheel (21), a material pulling driving part (22), and a transmission gear (23). The material pulling wheels (21) are arranged in pairs. The paired material pulling wheels (21) are located between the longitudinal heat-sealing mechanism (3) and the transverse heat-sealing mechanism (1). The longitudinal heat-sealing position of the packaging bag covering the outside of the material discharging pipe (8) is located between the material pulling wheels (21) and is in frictional contact with the material pulling wheels (21). The input ends of the material pulling wheels (21) are respectively fixedly connected to transmission shafts (24). Transmission gears (23) are correspondingly fixedly connected to the transmission shafts (24). The input end of one of the transmission gears (23) is drivingly connected to a material pulling driving part (22). The material pulling driving part (22) is fixedly arranged on the workbench (4). Driven by the material pulling driving part (22), the paired material pulling wheels (21) rotate in opposite directions and pull the longitudinally heat-sealed packaging bag towards the loading position.

7. The automatic packaging device for chemical raw materials according to claim 6, characterized in that, The quantitative unloading mechanism (6) includes an unloading drive member (66), a lower limit plate (64), an upper limit plate (62), a limit cylinder (63) and an unloading hopper (81), wherein the unloading drive member (66) is arranged on the workbench (4), the output shaft end of the unloading drive member (66) is fixedly connected to the limit cylinder (63), and the limit cylinder (63) is located between the upper limit plate (62) and the lower limit plate (64), the upper limit plate (62) is fixedly arranged on the storage box (5), the storage box (5) is arranged on one side of the workbench (4), and the storage box ( 5) is provided with a transition pipe (61), the lower limit plate (64) is fixedly arranged on the workbench (4) through a support seat (65), wherein a discharge cavity (631) is provided on the limit cylinder (63), the transition pipe (61) is communicated with the discharge cavity (631) through an upper through hole provided on the upper limit plate (62), a discharge hopper (81) is fixedly arranged on one side of the workbench (4) and communicated with the input end of the discharge pipe (8), and the discharge hopper (81) is communicated with the discharge cavity (631) through a lower through hole provided on the lower limit plate (64).

8. An automatic chemical raw material packaging device according to claim 7, characterized in that, The outer portion of the discharge tube (8) is provided with a gathering frame (82), which is fixedly arranged on one side of the workbench (4). The workbench (4) is also provided with a discharge mechanism (7), which comprises a limit frame (72), a first guide rod (73), a second guide rod (74) and a stand (71). The stand (71) is fixedly arranged on the workbench (4). The limit frame (72), the first guide rod (73) and the second guide rod (74) are rotatably connected to the stand (71). The limit frame (72) is provided with a packaging bag reel, and the discharge end of the packaging bag passes around the first guide rod (73) and the second guide rod (74) in sequence and passes through the gap between the gathering frame (82) and the discharge tube (8).

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