Heat sealing device for bagged gypsum powder bags

Abstract

The utility model relates to a heat sealing device, and provides the heat sealing device for the bagged gypsum powder bag, which comprises a filling machine, a mounting plate, a filling pipe, a clamping piece, a fixing plate, a guide frame and the like, a control panel is arranged on the filling machine, a mounting plate is fixedly arranged on the lower portion of the filling machine, a filling pipe is arranged on the mounting plate, a clamping piece is arranged on the filling machine close to the filling pipe, fixing plates are arranged on the left side and the right side of the front lower portion of the mounting plate, a guide frame is fixedly arranged between the front portions of the fixing plates, and two sliding grooves are formed in the left side and the right side of the guide frame. According to the utility model, the heat-sealing piece, the butt-clamping plate, the transmission mechanism and other parts are arranged on the filling machine, so that the integrated operation of powder filling and bag opening heat-sealing procedures is realized, a filled material bag does not need to be transferred to independent heat-sealing equipment, and under the matching of the structures of the mounting plate, the guide frame and the like of the filling machine, the filling efficiency is greatly improved. The butt clamping plate and the heat sealing piece are driven by the transmission mechanism to conduct heat sealing on a material bag opening, and the problems that material bag transferring time is wasted and powder is scattered in the transferring process due to procedure separation are solved.

Description

Technical Field

[0001] This utility model relates to a heat sealing device, and more particularly to a heat sealing device for bagged gypsum powder bags. Background Technology

[0002] In the gypsum powder processing industry, bagging is the main form of storage and transportation of gypsum powder. To facilitate filling operations, existing gypsum bags generally have an extended bag opening that fits the filling tube. During filling, the extended bag opening is placed over the filling tube to prevent powder leakage. After filling, the extended bag opening needs to be sealed to prevent the powder from getting damp or spilling during storage or transportation.

[0003] The existing processing flow for bagged gypsum powder is mainly divided into three independent stages: filling, transfer, and heat sealing. Operators attach the extended opening of the gypsum bag to the filling tube of the filling machine, and the filling machine injects a set amount of powder into the bag. After filling, operators remove the gypsum bag and transfer it to a separate heat sealing device via conveyor belt or manual handling. Finally, the opening of the gypsum bag is manually opened and placed into the clamp of the heat sealing device to complete the heat sealing. This existing technology has certain applicability in production scenarios and can meet the basic production needs of small gypsum processing enterprises.

[0004] However, since the filling machine and heat sealing equipment are independent of each other, the filled gypsum bags need to be transferred to the heat sealing stage manually or by conveyor belt. During this process, the extended opening of the gypsum bag is prone to deformation or contamination due to collision and friction, and there is a risk of powder spillage, which affects the weight consistency of subsequent bagged products and further reduces the stability of product quality. At the same time, the transfer process requires additional time and manpower. Especially in mass production, if the transfer waiting queue is too long, it will cause the operating rhythm of the filling machine and the heat sealing equipment to be out of sync. The filling machine will have to stop frequently to wait for transfer, or the heat sealing equipment will be idle due to insufficient gypsum bags to be sealed, which will seriously reduce the overall production efficiency. Utility Model Content

[0005] In order to overcome the shortcomings of the existing technology, the objective is to provide a heat-sealing device for bagged gypsum powder.

[0006] The technical solution of this utility model is as follows: a heat-sealing device for bagged gypsum powder, comprising a filling machine, a mounting plate, a filling tube, a clamping component, a fixing plate, a guide frame, a slide rod one, a connecting block, a slide rod two, a cylinder one, a connecting frame, a support plate, a connecting seat, a frame, a guide post, a clamping plate, a spring, a sliding plate, and a heat-sealing component. The filling machine is equipped with a control panel, and a mounting plate is fixedly mounted on its lower part. A filling tube is mounted on the mounting plate. A clamping component is located on the filling machine near the filling tube. Fixing plates are located on the left and right sides of the lower front part of the mounting plate. A guide frame is fixedly mounted between the front parts of the fixing plates. Two sliding grooves are opened on the left and right sides of the guide frame, namely sliding groove one and sliding groove two. Slide rod one and sliding rod two are slidably mounted between the two sliding grooves one and two sliding grooves two, respectively. The slide rod 2 has connecting blocks between its left and right ends and slide rod 1. A cylinder 1 is located at the rear of the guide frame. A connecting frame is located at the end of the movable rod of cylinder 1. The other end of the connecting frame is connected to slide rod 1. A support plate is located on slide rod 1. Connecting seats are located on the left and right sides of the front of slide rod 2. A frame is located between the upper parts of the connecting seats. Guide posts are vertically located on the left and right sides inside the frame. Two clamping plates are slidably arranged between the guide posts. The two clamping plates are arranged symmetrically, and a sliding plate is elastically provided on the opposite side of the clamping plates through a spring. The sliding plates are connected to the sliding mechanism. A heat seal is provided on the opposite side of the two sliding plates. A transmission mechanism is provided between the frame and the clamping plates. The transmission mechanism drives the two clamping plates to move synchronously and in opposite directions or back to back.

[0007] As a preferred technical solution of this utility model, the connecting frame is hinged to the slide rod, and the front part of the slide groove is provided with an arc-shaped groove with a gradually rising end.

[0008] As a preferred technical solution of this utility model, the transmission mechanism includes a rack, a gear and a drive cylinder. A gear is rotatably provided in the middle of the left side of the frame. A rack is vertically provided at the left end of each clamping plate. The ends of the two racks extend toward the gear. The two racks are located on the front and rear sides of the gear respectively, and both racks mesh with the gear. A drive cylinder is vertically provided in the upper part of the frame. The drive rod of the drive cylinder is connected to the upper clamping plate.

[0009] As a preferred technical solution of this utility model, it also includes a knife holder, a mounting base and a cutter. The mounting base is provided at the rear of the upper clamping plate, and the cutter is fixedly provided at the lower part of the mounting base. The knife holder is provided at the rear of the lower sliding plate, and the knife holder is provided with a knife groove located directly below the cutter.

[0010] As a preferred technical solution of this utility model, it also includes a guide groove. The guide groove is provided at the lower rear part of the frame. The guide groove is inclined and located in the space below the tool holder.

[0011] As a preferred technical solution of this utility model, it also includes a baffle, a limiting plate and a second cylinder. A baffle is provided at the front of the frame, and a second cylinder is provided on both the left and right sides of the baffle. A limiting plate is provided on the movable rod of the second cylinder, and the limiting plates are arranged perpendicular to each other with the baffle.

[0012] Beneficial effects: 1. This utility model integrates powder filling and bag heat sealing processes by setting heat sealing components, clamping plates, and transmission mechanisms on the filling machine. It eliminates the need to transfer the filled bags to a separate heat sealing device. The bag opening is directly heat sealed by the clamping plates and heat sealing components driven by the transmission mechanism through the mounting plate and guide frame of the filling machine. This avoids the waste of bag transfer time and powder spillage during transfer caused by process separation, and improves the production efficiency of bagged gypsum powder and the cleanliness of the working environment.

[0013] 2. After the heat sealing process is completed, the cylinder pushes the slide rod to move along the slide groove. When the slide rod enters the arc-shaped groove at the front of the slide groove, the support plate rotates counterclockwise around the slide rod as the axis and tilts in a rear-high-front-low position. The material bag can slide out of the support plate by itself. There is no need to set up additional power components such as motors and cylinders to drive the material feeding, which simplifies the device structure and reduces the equipment manufacturing cost and subsequent maintenance difficulty.

[0014] 3. After the drive cylinder drives the clamping plate and the heat sealing component to complete the heat sealing of the bag opening, the drive cylinder continues to extend the drive rod after heat sealing, compressing the spring to move the cutter to one side of the cutter holder, so that the cutter and the cutter groove on the cutter holder cooperate to cut off the excess bag opening. There is no need to set up a separate edge cutting device or manually cut the edge, ensuring that the bag opening is flat. At the same time, it further shortens the processing time and improves the finished product quality and processing efficiency of bagged gypsum powder. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0016] Figure 2 This is a three-dimensional structural diagram of the filling machine of this utility model.

[0017] Figure 3 This is a three-dimensional structural diagram of the concealed filling machine of this utility model.

[0018] Figure 4 This is a three-dimensional structural diagram of the cylinder, connecting frame, and support plate of this utility model.

[0019] Figure 5 This is a three-dimensional structural diagram of the frame, heat sealant, and tool holder components of this utility model.

[0020] Figure 6 This is a three-dimensional structural diagram of the frame, limiting plate, and cylinder components of this utility model.

[0021] The markings in the diagram are as follows: 1-filling machine, 2-mounting plate, 21-filling tube, 3-clamping component, 5-fixing plate, 51-guide frame, 501-slide groove one, 502-slide groove two, 52-slide rod one, 521-connecting block, 53-slide rod two, 531-cylinder one, 532-connecting frame, 54-support plate, 55-connecting seat, 6-frame, 61-guide post, 62-clamping plate, 621-spring, 63-slide plate, 64-heat sealing component, 7-rack, 71-gear, 72-drive cylinder, 8-knife holder, 81-mounting seat, 82-cutting knife, 9-guide chute, 10-baffle, 101-limiting plate, 102-cylinder two, 200-bag body, 201-bag opening. Detailed Implementation

[0022] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments, but this does not limit the scope of protection and application of the present invention.

[0023] Example 1

[0024] A heat-sealing device for bagged gypsum powder, such as Figure 1-5 As shown, the system includes a filling machine 1, a mounting plate 2, a filling pipe 21, a clamping component 3, a fixing plate 5, a guide frame 51, a first chute 501, a second chute 502, a first slide rod 52, a connecting block 521, a second slide rod 53, a first cylinder 531, a connecting frame 532, a support plate 54, a connecting seat 55, a frame 6, a guide post 61, a clamping plate 62, a spring 621, a sliding plate 63, and a heat sealing component 64. The filling machine 1 is the main equipment for filling gypsum powder, and its operating side is equipped with a control panel with a built-in electrical control system. The machine can start, stop and control the operation of each component of the equipment. The lower part of the filling machine 1 is fixed with a mounting plate 2 by bolts. The mounting plate 2 is a metal plate. The bottom center of the mounting plate 2 is fixed with a filling tube 21 by a flange. The filling tube 21 is a hollow tube and its lower end can be inserted into the bag body 200 to fill the powder. The filling machine 1 is equipped with a clamping part 3 near the filling tube 21 by a bracket. The clamping part 3 is electrically connected to the electrical control system and is used to clamp the bag mouth 201 of the bag body 200 during filling to prevent powder leakage.

[0025] Mounting plate 2 has two vertically fixed mounting plates 5 on its lower front left and right sides, secured by bolts. The mounting plates 5 are symmetrically arranged rectangular plates. A guide frame 51 is horizontally fixed between the front parts of the mounting plates 5 by bolts. The guide frame 51 has a U-shaped frame structure, with two sliding grooves extending in the front-back direction on its left and right side walls. The two sliding grooves are a first sliding groove 501 at the top and a second sliding groove 502 at the bottom. A sliding rod 52 slides between the first sliding groove 501 on the same side of the two mounting plates 5, and a sliding rod 53 slides between the second sliding groove 502 on the same side. Both sliding rods 52 and 53 are horizontal metal rods that can slide back and forth along the sliding grooves. Connecting blocks 521 are bolted between both ends of the slide rod 53 and between the left and right ends of the slide rod 53. The connecting blocks 521 make the slide rod 52 and the slide rod 53 form an integral structure, ensuring that the left and right ends slide synchronously. A cylinder 531 is horizontally fixed to the rear of the guide frame 51 by a bracket. The cylinder 531 is electrically connected to the electronic control system, which can control the extension and retraction of its movable rod. A connecting frame 532 is hinged to the end of the movable rod of the cylinder 531 by a pin. The other end of the connecting frame 532 is hinged to the middle of the slide rod 52 by a pin. A support plate 54 is bolted to the upper surface of the slide rod 52. The support plate 54 is a horizontally placed rectangular plate used to place the bag to be filled 2. 00, the sliding rod 53 has connecting seats 55 fixed upwards on both sides of the front by bolts. A frame 6 is horizontally fixed between the upper parts of the connecting seats 55 by bolts. The frame 6 is a rectangular frame used to install heat-sealing related components. Inside the frame 6, guide posts 61 are vertically fixed on both sides by bolts. The guide posts 61 are cylindrical guides. Two clamping plates 62 are slidably arranged between the two guide posts 61. The clamping plates 62 are rectangular plates with guide holes at both ends that fit the guide posts 61, ensuring smooth sliding along the guide posts 61. The two clamping plates 62 are symmetrically arranged vertically, and a sliding plate 6 is elastically provided on the opposite side of the clamping plates 62 by a spring 621. 3. One end of the spring 621 is welded and fixed to the clamping plate 62, and the other end is welded and fixed to the slide plate 63. The left and right ends of the slide plate 63 also have holes that are compatible with the guide post 61. The slide plate 63 is slidably connected to the guide post 61. The spring 621 can play a buffering role during heat sealing to prevent the heat sealing component 64 from making hard contact with the bag opening 201 and causing damage. The heat sealing component 64 is fixed to the opposite side of the two slide plates 63 by bolts. The heat sealing component 64 is electrically connected to the electrical control system. After being powered on, it can generate high temperature to achieve heat sealing of the bag opening 201. A transmission mechanism is provided between the frame 6 and the clamping plate 62. The transmission mechanism drives the two clamping plates 62 to move synchronously and in opposite directions or back to back, so as to realize the opening and closing of the heat sealing component 64.

[0026] like Figure 1 , Figure 3 and Figure 5As shown, the transmission mechanism includes a rack 7, a gear 71, and a drive cylinder 72. A gear 71 is rotatably mounted on the left side of the frame 6 via a bearing. The gear 71 can rotate freely around its own axis. Racks 7 are vertically fixed to the left ends of both upper and lower clamping plates 62 via bolts. The tooth surfaces of the racks 7 face the gear 71, and the ends of both racks 7 extend towards one side of the gear 71. The two racks 7 are located on the front and rear sides of the gear 71, respectively, and both racks 7 mesh with the gear 71, forming a rack and pinion transmission structure. A drive cylinder 72 is vertically fixed to the upper part of the frame 6 via a bracket. The drive cylinder 72 is electrically connected to the electronic control system, and its drive rod extends downwards and is fixedly connected to the top of the upper clamping plate 62 via bolts. When heat sealing is required... When the control panel controls the drive cylinder 72 to extend its drive rod, it pushes the upper clamping plate 62 to move downward along the guide post 61. The upper rack 7 moves downward with the clamping plate 62 and drives the gear 71 to rotate clockwise. When the gear 71 rotates, it drives the lower rack 7 to move upward, which in turn pulls the lower clamping plate 62 to move upward along the guide post 61, so that the two clamping plates 62 move synchronously in opposite directions, so that the two heat sealing components 64 clamp the bag opening 201 and heat seal it. After the heat sealing is completed, the control panel controls the drive cylinder 72 to retract its drive rod, pulls the upper clamping plate 62 to move upward, the upper rack 7 drives the gear 71 to rotate counterclockwise, and the lower rack 7 drives the lower clamping plate 62 to move downward. The two heat sealing components 64 separate in opposite directions, completing the heat sealing action and resetting.

[0027] Initially, the movable rod of cylinder 531 is fully retracted, and the placed bag 200 is positioned in front of frame 6. The operator pushes the bag opening 201 at the top of the bag 200 backward through the two heat-sealing components 64 and places it on the filling tube 21. After positioning the bag opening, filling begins. After filling, the operator sends a command through the control panel to extend the drive rod of cylinder 72 to heat-seal the bag opening 201. After heat sealing, the operator controls the drive cylinder 72 to reset, and then controls the movable rod of cylinder 531 to extend, pushing slide rod 52 and slide rod 53 forward along the chute, moving the bag 200 away from the filling machine 1.

[0028] Among them, such as Figure 3 and Figure 4As shown, the connecting frame 532 and the slide rod 52 are hinged at the middle by a pin, ensuring that the connecting frame 532 can swing adaptively when the slide rod 52 rotates. The front of the slide groove 501 is provided with an arc-shaped groove with a gradually rising end, and the arc-shaped groove and the slide groove 501 are smoothly transitioned. When the slide rod 53 slides along the slide groove 502 until it stops at the front end of the slide groove 502 and cannot move forward, if the control panel continues to control the cylinder 531 to extend the movable rod, the slide rod 52 will enter the arc-shaped groove under the thrust of the connecting frame 532. The guiding effect of the arc-shaped groove causes the slide rod 52 to rotate counterclockwise around the axis of the slide rod 52, driving the pallet 54 to rotate synchronously until the whole is tilted with the back higher than the front. At this time, the bag 200 that has been filled and heat-sealed on the pallet 54 slides off the pallet 54 under the action of gravity, realizing automatic unloading without manual bag removal and improving work efficiency.

[0029] Example 2

[0030] Based on Example 1, such as Figure 5 As shown, it also includes a knife holder 8, a mounting base 81, and a cutter 82. The mounting base 81, which is an L-shaped metal plate, is bolted to the rear of the upper clamping plate 62. The cutter 82 is vertically bolted to the lower part of the mounting base 81, with its cutting edge facing downwards, for cutting the heat-sealed bag opening 201. The knife holder 8, which is a rectangular block structure, is bolted to the rear of the lower sliding plate 63. The upper part of the knife holder 8 has a groove that matches the cutting edge of the cutter 82. The groove is located directly below the cutter 82 to ensure that the cutter 82 can accurately cut into the groove and avoid damage to the cutting edge. During operation, the drive cylinder 72 is controlled by the control panel. The drive cylinder 72 first moves the upper clamping plate 62 downwards and the lower clamping plate 62 upwards, so that the two heat-sealing components 64 clamp the bag opening 201. The device is then powered on and heated. At this point, the cutting edge of the cutter 82 is slightly higher than the height of the upper heat-sealing component 64. Only the heat-sealing component 64 contacts the bag opening 201 to complete the heat sealing. After the heat sealing is completed, the control panel controls the drive cylinder 72 to continue extending the drive rod. The upper clamping plate 62 continues to move down, and the lower clamping plate 62 continues to move up. At this time, the spring 621 between the slide plate 63 and the clamping plate 62 is compressed, and the heat-sealing component 64 has come into contact with each other and is in contact with the bag opening 201, so it cannot move further. The spring plays a buffering and yielding role. The cutter 82 continues to move towards the knife holder 8 with the upper clamping plate 62. Finally, the cutting edge cuts into the knife groove of the knife holder 8, cutting off the excess part of the heat-sealed bag opening 201. This achieves integrated heat sealing and cutting operation, eliminating the need for additional cutting equipment and improving processing efficiency.

[0031] like Figure 1 , Figure 3 and Figure 5As shown, it also includes a guide trough 9. The guide trough 9 is fixed to the lower rear part of the frame 6 by bolts. The guide trough 9 is a U-shaped trough, which is inclined in the shape of being lower at the back and higher at the front. The guide trough 9 is located in the space below the cutter holder 8. Its front opening faces the bottom of the cutter holder 8, and its rear end extends to the collection area outside the equipment. When the cutter 82 cuts off the excess part of the bag opening 201, the cut waste falls from the cutter holder 8 under the action of gravity and falls directly into the guide trough 9. The inclined guide trough 9 can guide the waste to slide backward along the trough and finally fall into the collection area, avoiding the accumulation of waste inside the equipment or on the ground, reducing the amount of manual cleaning work, and keeping the working environment clean.

[0032] like Figure 1 and Figure 6 As shown, it also includes a baffle 10, a limiting plate 101, and a second cylinder 102. The baffle 10 is bolted to the front of the frame 6. The baffle 10 is a vertical rectangular plate located behind the support plate 54. It is used to prevent the bag 200 on the support plate 54 from moving backward, so as to avoid the bag 200 shifting position and affecting the bag opening 201. The second cylinder 102 is horizontally fixed to both sides of the baffle 10 by brackets. The second cylinder 102 is electrically connected to the electrical control system. The control panel can control the extension and retraction of its movable rod. The movable rod of the second cylinder 102 extends towards the inside of the equipment, and the end of the movable rod is bolted to a limiting plate 101. The limiting plate 101 is an arc-shaped or rectangular plate, and its surface is perpendicular to the baffle 10. The bags are arranged perpendicularly to each other. When the operator places the bag 200 on the pallet 54, the control panel controls the movable rods of the two cylinders 102 on both sides to extend one by one, driving the limiting plate 101 to move closer to the left and right sides of the bag 200 until the limiting plate 101 contacts the side wall of the bag 200, thus limiting the left and right sides of the bag 200 and preventing the bag 200 from shifting left and right as it moves with the pallet 54. This ensures that the bag opening 201 can be accurately fitted onto the filling tube 21, improving the positioning accuracy of the bag opening. When the bag 200 has finished filling and heat sealing and is ready to be unloaded, the control panel controls the movable rods of the two cylinders 102 to retract, driving the limiting plate 101 away from the bag 200 to avoid obstructing the bag 200 from sliding down.

[0033] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A heat sealing device for bagged gypsum powder, comprising a filling machine (1) and a mounting plate (2), wherein the filling machine (1) is provided with a control panel and the mounting plate (2) is fixedly provided at its lower part. characterized in that It also includes a filling tube (21), a clamping component (3), a fixing plate (5), a guide frame (51), a slide bar one (52), a connecting block (521), a slide bar two (53), a cylinder one (531), a connecting frame (532), a support plate (54), a connecting seat (55), a frame (6), a guide post (61), a clamping plate (62), a spring (621), a sliding plate (63), and a heat sealer (64). The filling tube (21) is provided on the mounting plate (2), and the filling machine (1) is located near the filling tube (21). 21) A clamping component (3) is provided at the position. Fixing plates (5) are provided on both the left and right sides of the lower front part of the mounting plate (2). A guide frame (51) is fixed between the front parts of the fixing plates (5). Two sliding grooves are opened on both the left and right sides of the guide frame (51). The two sliding grooves are sliding groove one (501) and sliding groove two (502). Sliding rod one (52) and sliding rod two (53) are slidably provided between the two sliding grooves one (501) and the two sliding grooves two (502). Sliding rod one (52) and sliding rod two (53) are slidably provided on both the left and right sides of sliding rod one (52) and sliding rod two (53). A connecting block (521) is provided between each end. A cylinder (531) is provided at the rear of the guide frame (51). A connecting frame (532) is provided at the end of the movable rod of the cylinder (531). The other end of the connecting frame (532) is connected to the slide rod (52). A support plate (54) is provided on the slide rod (52). A connecting seat (55) is provided on the left and right sides of the front of the slide rod (53). A frame (6) is provided between the upper parts of the connecting seats (55). Guide posts (61) are vertically provided on the left and right sides inside the frame (6). Two clamping plates (62) are provided between the guide pillars (61) and slide up and down. The two clamping plates (62) are arranged symmetrically up and down. A sliding plate (63) is provided on the opposite side of the clamping plate (62) by a spring (621). The sliding plate (63) is connected to the sliding plate. A heat seal (64) is provided on the opposite side of the two sliding plates (63). A transmission mechanism is provided between the frame (6) and the clamping plates (62). The transmission mechanism drives the two clamping plates (62) to move synchronously and in opposite directions or back to back.

2. A bagged gypsum powder bag heat sealing apparatus as claimed in claim 1, characterized in that: The connecting frame (532) is hinged to the slide rod (52), and the front of the slide groove (501) is provided with an arc-shaped groove with a gradually rising end.

3. A bagged gypsum powder bag heat sealing apparatus as claimed in claim 2, characterized in that: The transmission mechanism includes a rack (7), a gear (71) and a drive cylinder (72). The gear (71) is rotatably provided in the middle of the left side of the frame (6). The rack (7) is vertically provided at the left end of the clamping plate (62). The ends of the two racks (7) extend toward the gear (71). The two racks (7) are located on the front and rear sides of the gear (71) respectively, and both racks (7) mesh with the gear (71). The drive cylinder (72) is vertically provided in the upper part of the frame (6). The drive rod of the drive cylinder (72) is connected to the upper clamping plate (62).

4. A bagged gypsum powder bag heat sealing apparatus as claimed in claim 3, characterized in that: It also includes a knife holder (8), a mounting base (81) and a cutter (82). The upper part is provided with a mounting base (81) at the rear of the clamping plate (62). The cutter (82) is fixedly provided at the lower part of the mounting base (81). The lower side of the sliding plate (63) is provided with a knife holder (8). The knife holder (8) is provided with a knife groove, which is located directly below the cutter (82).

5. A bagged gypsum powder bag heat sealing apparatus as claimed in claim 4, characterized in that: It also includes a guide trough (9), which is located at the lower rear of the frame (6). The guide trough (9) is inclined and located in the space below the knife holder (8).

6. The heat-sealing device for bagged gypsum powder as described in claim 5, characterized in that: It also includes a baffle (10), a limiting plate (101) and a cylinder (102). The front of the frame (6) is provided with a baffle (10). Cylinders (102) are provided on both the left and right sides of the baffle (10). Limiting plates (101) are provided on the movable rods of cylinders (102). The limiting plates (101) are arranged perpendicular to each other with the baffle (10).

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