Emulsion explosive quantitative packaging equipment

Abstract

The present application relates to the technical field of emulsion explosive production, and particularly relates to an emulsion explosive quantitative packaging device; the device comprises a charging machine, an outlet pipe of the charging machine extends to the top of a frame body, a heat sealing machine is arranged above the frame body and connected with the outlet pipe, a buffer adjusting machine and a carding machine are sequentially arranged behind the heat sealing machine; the heat sealing machine comprises a supporting block arranged on the frame body, a semicircular groove is arranged on the top surface of the supporting block and adapted to the outlet pipe, the semicircular groove is coaxially connected with the end of the outlet pipe, a limiting piece assembly is arranged on the semicircular groove, a pressure bearing plate is arranged behind the limiting piece assembly, and a heat sealing cutter assembly is arranged above the pressure bearing plate; the heat sealing cutter assembly comprises a cutter body controlled by an upper computer, a cutter head is movably arranged at the bottom of the cutter body, and the cutter head dynamically adjusts the position to make the heat sealing cutter head and the edge of the explosive film flatly and closely adhere.

Description

Technical Field

[0001] The invention relates to the technical field of emulsion explosive production, in particular to a quantitative packaging device for emulsion explosive. Background Art

[0002] Emulsion explosive quantitative packaging equipment is an automated system used to accurately measure and package emulsion explosives. It is usually composed of a charging machine, a heat sealing machine, a card punching machine, etc. The equipment uses heat sealing technology to accurately seal the multi-layer composite film to form a moisture-proof and anti-static packaging structure. The temperature and time must be strictly controlled during the heat sealing process to ensure that the sealing strength is ≥15N / 15mm, in compliance with the WJ9088-2015 standard, to avoid leakage or false sealing, ensure the storage stability and transportation safety of the explosives, and at the same time improve production efficiency and consistency.

[0003] During the heat sealing process, it is first necessary to align the two sealing edges of the membrane and eliminate wrinkles, and then heat seal the edges while filling the emulsion explosive. If the sealing edges are not accurately aligned and wrinkles are not eliminated, it is easy to cause sealing failure, micropores or weak zones to form in the dislocated areas, and the emulsion explosive is easy to get damp and agglomerate, and even cause component separation, resulting in a decrease in detonation velocity or detonation refusal. When heat sealing, the heat sealing blade should fit smoothly with the two sealing edges to make the membrane seal even. However, in actual operation, due to wear, the contact surface between the heat sealing blade and the pressure plate is uneven, resulting in uneven contact pressure between the membrane sealing edge and the heating surface of the heat sealing blade. One end of the heat sealing blade is in too tight contact with the membrane sealing edge, and the heat conduction efficiency is abnormally increased, which can easily cause the membrane to burn through. One end of the heat sealing blade is in too loose contact with the membrane sealing edge, and the heat conduction efficiency is low, which can easily cause the membrane to be falsely sealed.

[0004] Therefore, the present application provides a quantitative packaging device for emulsion explosives to solve the problems raised in the above background technology. Summary of the Invention

[0005] The purpose of the present invention is to provide a quantitative packaging device for emulsion explosives to solve the problems that the existing packaging equipment cannot achieve precise alignment of the medicine film and eliminate wrinkles before heat sealing, and that the heat sealing knife head cannot dynamically adjust its position during the heat sealing process to make the heat sealing knife head and the medicine film edge fit smoothly.

[0006] To solve the above technical problems, the present invention provides a quantitative packaging device for emulsion explosives, comprising a charging machine, wherein a discharge pipe of the charging machine extends to the top of a frame, a heat sealing machine is arranged above the frame to receive the discharge pipe, and a buffer adjustment machine and a card punching machine are arranged in sequence behind the heat sealing machine;

[0007] The heat sealing machine includes a support block arranged on a frame, a semicircular groove is provided on the top surface of the support block to adapt to the medicine outlet tube, the semicircular groove is coaxially connected to the end of the medicine outlet tube, a limiting plate assembly is provided on the semicircular groove, a pressure plate is provided behind the limiting plate assembly, and a heat sealing knife assembly is provided above the pressure plate;

[0008] The heat sealing knife assembly includes a knife body controlled by a host computer, a knife head movably arranged at the bottom of the knife body, and the knife head dynamically adjusts its position so that the knife head and the sealing edge of the medicine film fit smoothly.

[0009] A further improvement of the technical solution of the present invention is that: a cavity is opened inside the blade body, wedge-shaped fixed blocks are fixed on both sides of the cavity, a movable block is set between the two fixed blocks, and triangular accommodating spaces are formed between the movable block and the two fixed blocks respectively. Balls are set in the accommodating spaces, and the balls are used to control the left and right movement of the movable block, thereby controlling the up and down movement of the balls on the other side, thereby realizing dynamic fine-tuning of the cutter head position.

[0010] A further improvement of the technical solution of the present invention is that: two guide rods are integrally provided at the top of the cutter head, the top of the guide rod is against the ball, a baffle is provided around the guide rod, the guide rod and the baffle are integrally provided, a spring is provided at the bottom of the baffle covering the guide rod, the bottom end of the spring is fixed to the bottom of the blade body, the spring ensures the elastic contact between the guide rod and the ball, and cooperates with the ball to realize dynamic fine-tuning of the cutter head.

[0011] A further improvement of the technical solution of the present invention is that: a film roller is arranged inside the frame body, and a changing roller is arranged on the top surface of the frame body to adapt to the medicine outlet pipe. The medicine film on the film roller extends to the medicine outlet pipe after being changed in direction by the changing roller, and covers the medicine outlet pipe. The changing roller changes the front and rear path of the medicine film into a V shape, thereby realizing the change of direction of the medicine film.

[0012] A further improvement of the technical solution of the present invention is that the semicircular groove of the support block receives the end of the medicine outlet tube, and a limiting piece is provided 3 cm axially rearward of the medicine outlet tube, and the limiting piece and the semicircular groove form a circular channel.

[0013] A further improvement of the technical solution of the present invention is that the limiting plate assembly includes a first limiting plate and a second limiting plate, the second limiting plate is folded outward near the outer end of the first limiting plate, and has the same curvature as the outer end of the first limiting plate, the outer ends of the first limiting plate and the second limiting plate coincide, and the gap between the two is 0.4-0.6mm, and the outer ends of the first limiting plate and the second limiting plate are both provided with rollers that roll along the axial direction of the medicine outlet tube, and the rollers are used to reduce the sliding friction resistance between the medicine film and the limiting plate assembly and eliminate wrinkles.

[0014] A further improvement of the technical solution of the present invention is that a pressure plate is set 4-8 cm on the axial rear side of the limiting plate, and the pressure plate extends to just above the medicine roll. The gap between the pressure plate and the medicine roll is 0.2-0.3 mm. A cutter head is set above the pressure plate, and a medicine film seal is clamped between the cutter head and the pressure plate, and the cutter head, pressure plate and medicine film seal are tightly joined by heat sealing.

[0015] A further improvement of the technical solution of the present invention is that the thickness of the pressure plate is 0.5 mm, and the length of the pressure plate is consistent with the length of the cutter head.

[0016] A further improvement of the technical solution of the present invention is that a silicon nitride ceramic layer with a thickness of 50 μm is sprayed on the surface of the pressure plate to block the transfer of heat to the medicine coil.

[0017] A further improvement of the technical solution of the present invention is that: multiple straightening rollers are arranged on the axial rear side of the heat sealing knife assembly, and the multiple straightening rollers are evenly distributed on both sides of the medicine roll. An arc-shaped straightening belt is arranged on the straightening rollers on the same side for common transmission, and the curvature of the inward arc surface of the arc-shaped straightening belt matches the outer diameter of the medicine roll.

[0018] By adopting the above technical solution, the present invention has the following beneficial effects:

[0019] 1. The present invention provides a quantitative packaging device for emulsion explosives. The packaging device is conducive to dynamic adjustment to achieve a smooth and close edge of the film seal by providing a heat-sealing knife assembly. The ball and guide rod are elastically matched and have adaptive pressure compensation. The ball in the accommodating space is used to control the left and right movement of the movable block, thereby controlling the up and down movement of the ball on the other side, realizing dynamic fine-tuning of the cutter head position, converting the cutter head offset into guide rod displacement, and the spring buffering the impact force in real time to ensure that the contact pressure between the cutter head and the film seal is stable at 0.3-0.5MPa; the wedge-shaped fixed block guides the bidirectional displacement of the ball, eliminating unilateral tilting of the cutter head and the pressure plate due to wear, and avoiding local overheating.

[0020] 2. The present invention provides a quantitative packaging device for emulsion explosives. The packaging device forms a closed heat field by setting a pressure plate. The gap between the pressure plate and the cutter head forms a closed heat field. Heat is evenly transferred to the edge seal of the medicine film to improve the sealing strength. A silicon nitride ceramic layer is sprayed on the surface of the pressure plate to block heat transfer to the medicine roll and prevent the heat-sensitive components of the explosive from failing.

[0021] 3. The present invention provides a quantitative packaging device for emulsion explosives. The packaging device is conducive to the precise alignment of the edge sealing of the medicine film and the elimination of wrinkles through the combination of the first limit plate, the second limit plate and the roller. The overlapping gap between the first limit plate and the second limit plate is 0.4-0.6mm. In conjunction with the axial roller, the alignment error of the edge of the medicine film is ≤0.3mm, eliminating the risk of microporous leakage caused by misalignment. The roller rolls along the axial direction of the medicine outlet tube, synchronously offsetting the lateral tension of the medicine film, ensuring that there are no wrinkles when covering the medicine outlet tube, improving the surface flatness of the medicine film edge sealing, and laying the foundation for the next step of heat sealing the medicine film edge.

[0022] 4. The present invention provides a quantitative packaging device for emulsion explosives. The packaging device is provided with a changing roller, which changes the path of the film into a V shape and tensions the film, which is conducive to eliminating corrugations caused by uneven tension. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 This is an overall schematic diagram of a quantitative packaging device for emulsion explosives;

[0025] Figure 2 This is an overall schematic diagram of a quantitative packaging device for emulsion explosives;

[0026] Figure 3 for Figure 2 A magnified schematic diagram of part A;

[0027] Figure 4 for Figure 3 Schematic diagram of the structure without host computer;

[0028] Figure 5 for Figure 4 An enlarged schematic diagram of part B;

[0029] Figure 6 for Figure 5 A magnified schematic diagram of part C;

[0030] Figure 7 Schematic diagram of the structure of the limiting piece assembly of the present invention;

[0031] Figure 8 This is a schematic structural diagram of the pressure plate and the heat sealing knife assembly of the present invention;

[0032] Figure 9 This is a schematic diagram of the structure of the drug film and the drug outlet tube of the present invention;

[0033] Figure 10 for Figure 9 An enlarged schematic diagram of part D in the middle;

[0034] Figure 11 This is a schematic diagram of the structure of the medicine film and the direction-changing roller in the present invention;

[0035] Figure 12 Schematic diagram of the structure of the heat sealing knife assembly of the present invention;

[0036] Figure 13 is a cross-sectional view of the heat sealing knife assembly of the present invention;

[0037] Figure 14 for Figure 13 Enlarged schematic diagram of part E.

[0038] Figure numerals: 1. medicine film; 2. medicine roll; 3. medicine loading machine; 31. medicine outlet pipe; 4. buffer adjustment machine; 5. clipping machine; 6. heat sealing machine; 61. frame; 62. support block; 621. semicircular groove; 63. limit plate assembly; 631. first limit plate; 632. second limit plate; 633. roller; 64. pressure plate; 65. film roller; 66. changing roller; 67. upper computer; 68. heat sealing knife assembly; 681. blade; 682. blade head; 683. accommodating space; 684. fixed block; 685. movable block; 686. ball; 687. guide rod; 688. baffle; 689. spring; 69. straightening roller. DETAILED DESCRIPTION

[0039] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0040] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0041] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0042] The present invention will be further explained below with reference to specific embodiments.

[0043] like Figures 1-14As shown, this embodiment provides a quantitative packaging device for emulsion explosives, including a charging machine 3. The discharge pipe 31 of the charging machine 3 extends to the top of a frame 61. A heat sealing machine 6 is provided above the frame 61 to receive the discharge pipe 31. A buffer adjustment machine 4 and a clipping machine 5 are provided in sequence behind the heat sealing machine 6. After the emulsion explosive is wrapped in a drug film 1, the edges are heat-sealed to form a sealed drug roll 2. The drug film 1 is a multi-layer composite film that meets national standards, such as LLDPE / AL / PE. The drug roll 2 is a cylindrical solid. A stirring rod is provided in the charging machine 3. The charging machine 3 stirs the emulsion explosive evenly through the internal screw, and simultaneously completes the formation of the medicine column through the medicine outlet pipe 31. The medicine film 1 wraps the medicine column, and the heat sealing machine 6 dynamically heat-seals the edge of the medicine film 1 to eliminate wrinkles and improve the sealing strength. A carrying platform is provided on the buffer adjustment machine 4 to stabilize the conveying rhythm of the medicine roll 2 between the heat sealing machine 6 and the clipping machine 5. The clipping machine 5 uses a rotary heat sealing clamp to complete the secondary sealing of the end of the medicine roll 2. Among them, the charging machine 3, the buffer adjustment machine 4 and the clipping machine 5 are existing equipment. The heat sealing machine 6 includes a support block 62 arranged on a frame 61. The top surface of the support block 62 is adapted to the medicine outlet tube 31 to open a semicircular groove 621. The semicircular groove 621 is coaxially docked with the end of the medicine outlet tube 31 to avoid sealing dislocation caused by the deviation of the medicine column. A limiting plate assembly 63 is arranged on the semicircular groove 621, and a pressure plate 64 is arranged behind the limiting plate assembly 63. A heat sealing knife assembly 68 is arranged above the pressure plate 64.

[0044] like Figure 3 、 Figure 12-14As shown, in this embodiment, the heat-sealing knife assembly 68 includes a blade body 681 controlled by a host computer 67. A blade head 682 is movably provided at the bottom of the blade body 681. The blade head 682 dynamically adjusts its position so that the blade head 682 and the edge of the medicine film 1 are smoothly fitted. A cavity is provided inside the blade body 681. Wedge-shaped fixed blocks 684 are fixedly provided on both sides of the cavity. A movable block 685 is provided between the two fixed blocks 684. A triangular accommodating space 683 is formed between the movable block 685 and the two fixed blocks 684. A ball bearing 686 is provided in the accommodating space 683. The ball bearing 686 is used to control the left and right movement of the movable block 685, thereby controlling the up and down movement of the ball bearing 686 on the other side, thereby achieving dynamic fine-tuning of the position of the blade head 682. Two guide rods 687 are integrally provided at the top of the cutter head 682. The top of the guide rod 687 abuts against the ball 686. A baffle 688 is provided around the guide rod 687. The guide rod 687 and the baffle 688 are integrally provided. The bottom of the baffle 688 covers the guide rod 687 and a spring 689 is provided. The bottom end of the spring 689 is fixed to the bottom of the blade body 681. The bottom of the blade body 681 protrudes a baffle that supports the bottom end of the spring 689. The bottom end of the spring 689 is fixed. The top end of the spring 689 is connected to the bottom of the baffle 688. The ball 686 descends and is transmitted to the corresponding guide rod 687. The baffle 688 on the guide rod 687 presses down the spring 689. Since the guide rod 687 and the baffle 688 are integrally provided, the spring 689 ensures the elastic contact between the guide rod 687 and the ball 686, and cooperates with the ball 686 to realize dynamic fine-tuning of the cutter head 682. The packaging equipment is provided with a heat-sealing knife assembly 68, which is conducive to dynamic adjustment to achieve a smooth fit of the edge of the medicine film 1. The ball 686 and the guide rod 687 cooperate elastically and have adaptive pressure compensation. The adaptive compensation can compensate for the wear or deflection of the cutter head 682 (angle deviation <0.05°) to ensure uniform heat-sealing pressure. The ball 686 in the accommodating space 683 is used to control the left and right movement of the movable block 685, thereby controlling the up and down movement of the ball 686 on the other side to achieve dynamic fine-tuning of the position of the cutter head 682, and convert the offset of the cutter head 682 into the displacement of the guide rod 687. The spring 689 buffers the impact force in real time to ensure that the contact pressure between the cutter head 682 and the edge of the medicine film 1 is stable at 0.3-0.5MPa; the wedge-shaped fixed block 684 guides the bidirectional displacement of the ball 686, eliminates the unilateral tilt of the cutter head 682 and the pressure plate 64 caused by wear, and avoids local overheating.

[0045] like Figure 9-10 As shown, in this embodiment, a film roller 65 is provided in the frame 61, and a changing roller 66 is provided on the top surface of the frame 61 to adapt to the medicine outlet pipe 31. The medicine film 1 on the film roller 65 is changed in direction by the changing roller 66 and extends to the medicine outlet pipe 31, and covers the medicine outlet pipe 31. The changing roller 66 changes the front and rear path of the medicine film 1 into a V shape, realizes the change of direction of the medicine film 1, and tightens the medicine film 1, which is conducive to eliminating the corrugations caused by uneven tension.

[0046] like Figure 5-Figure 11As shown, in this embodiment, the semicircular groove 621 of the support block 62 receives the end of the medicine outlet tube 31, and a limiting plate assembly 63 is provided 3 cm axially rearward of the medicine outlet tube 31. The limiting plate assembly 63 and the semicircular groove 621 form a circular channel. The limiting plate assembly 63 includes a first limiting plate 631 and a second limiting plate 632. The end of the second limiting plate 632 is folded outward and has the same curvature as the end of the first limiting plate 631. The ends of the first limiting plate 631 and the second limiting plate 632 overlap, and the gap between the two is 0.4-0.6 mm. The ends of the first limiting plate 631 and the second limiting plate 632 are both provided with rollers 633 that roll along the axial direction of the medicine outlet tube 31. The rollers 633 are used to reduce the sliding friction resistance between the medicine film 1 and the limiting plate assembly 63 and eliminate wrinkles. The combination of the first limiting piece 631, the second limiting piece 632 and the roller 633 is conducive to the precise alignment of the edge sealing of the medicine film 1 and the elimination of wrinkles. The overlapping gap between the first limiting piece 631 and the second limiting piece 632 is 0.4-0.6mm, and cooperates with the axial roller 633 to make the edge alignment error of the medicine film 1 ≤0.3mm, completely eliminating the risk of microporous leakage caused by misalignment. The roller 633 rolls axially along the medicine outlet tube 31, synchronously offsetting the lateral tension of the medicine film 1, ensuring that there are no wrinkles when covering the medicine outlet tube 31, improving the surface flatness of the edge sealing of the medicine film 1, and laying the foundation for the next step of heat sealing the edge sealing of the medicine film 1.

[0047] like Figure 5-Figure 12 As shown, in this embodiment, a pressure plate 64 is provided 4-8 cm axially rearward of the limiting plate assembly 63. The pressure plate 64 extends directly above the medicine roll 2, with a gap of 0.2-0.3 mm between the pressure plate 64 and the medicine roll 2. A cutting head 682 is provided above the pressure plate 64. The heat-sealed overlapping medicine film 1 seal passes between the cutting head 682 and the pressure plate 64. The cutting head 682, the pressure plate 64, and the medicine film 1 seal form a tight fit through the heat sealing. The pressure plate 64 is 0.5 mm thick and its length is consistent with that of the cutting head 682. The surface of the pressure plate 64 is spray-coated with a 50 μm thick silicon nitride ceramic layer to prevent heat transfer to the medicine roll 2. A closed heat field is formed between the pressure plate 64 and the cutter head 682, and heat is evenly transferred to the edge sealing of the explosive film 1 to improve the sealing strength. A silicon nitride ceramic layer is sprayed on the surface of the pressure plate 64 to block heat transfer to the explosive roll 2 and prevent the heat-sensitive components of the explosive from failing.

[0048] like Figure 3-Figure 4 As shown, in this embodiment, multiple straightening rollers 69 are disposed axially rearward of the heat-sealing blade assembly 68. These straightening rollers 69 are evenly distributed on both sides of the drug roll 2. The straightening rollers 69 on the same side are driven by a curved straightening belt, whose inwardly curved surface has a curvature that matches the outer diameter of the drug roll 2. The straightening rollers 69 cooperate with the curved straightening belt to radially press the drug roll 2 together, relieving longitudinal stress on the drug film 1 and ensuring uniform filling of the emulsion explosive within the drug film 1. The ovality of the drug roll 2 is ≤0.1 mm.

[0049] The working principle of the technical solution provided by the present invention is as follows:

[0050] The staff put the raw materials such as emulsion explosive and sensitizer into the charging machine 3. The charging machine 3 stirs the emulsion explosive evenly through the internal screw and completes the powder column forming synchronously through the discharge pipe 31. The top surface of the support block 62 is adapted to the discharge pipe 31 to open a semicircular groove 621, and the semicircular groove 621 is coaxially connected to the end of the discharge pipe 31; the medicine film 1 on the film roller 65 is changed in direction by the changing roller 66 and extends to the discharge pipe 31, and covers the discharge pipe 31. The changing roller 66 changes the front and rear path of the medicine film 1 into a V shape, realizes the change of direction of the medicine film 1, tensions the medicine film 1, and eliminates the uneven tension caused by the film film 1. The medicine film 1 and the medicine column of the medicine outlet pipe 31 are synchronously transmitted backwards, and the medicine film 1 first passes through the gap between the first limiting piece 631 and the second limiting piece 632. The overlapping gap between the first limiting piece 631 and the second limiting piece 632 is 0.4-0.6mm. Cooperating with the axial roller 633, the edge alignment error of the medicine film 1 is ≤0.3mm, eliminating the risk of microporous leakage caused by misalignment. The roller 633 rolls axially along the medicine outlet pipe 31, synchronously offsetting the lateral tension of the medicine film 1, ensuring that there are no wrinkles when covering the medicine outlet pipe 31, and improving the surface flatness of the sealed edge of the medicine film 1.

[0051] The edge sealing of the medicine film 1 enters between the pressure plate 64 and the cutter head 682, and the cutter head 682, the pressure plate 64 and the edge sealing of the medicine film 1 form a tight fit through heat sealing. The gap between the pressure plate 64 and the cutter head 682 forms a closed thermal field, and the heat is evenly transferred to the edge sealing of the medicine film 1 for heat sealing. If the contact surface between the heat sealing cutter head 682 and the pressure plate 64 is uneven due to wear, one end of the heat sealing cutter head 682 is first subjected to the upward pressure of the pressure plate 64, and the pressure is transmitted upward through the guide rod 687 at this end, pushing the ball 686. Since the fixed block 684 is fixed and the accommodating space 683 is a triangular structure, the ball 686 can only push the movable block 685 to move horizontally, and the movable block 685 moves horizontally. The movement pushes the ball bearing 686 on the other side to descend, and the descending ball bearing 686 on the other side is transmitted to the corresponding guide rod 687, and the guide rod 687 pushes the cutter head 682 on the other end downward to press against the pressure plate 64. At this time, both ends of the cutter head 682 press against the pressure plate 64. Dynamic adjustment makes the heat-sealing cutter head 682 fit smoothly with the edge of the medicine film 1 on the pressure plate 64. The spring 689 buffers the impact force in real time to ensure that the contact pressure between the cutter head 682 and the edge of the medicine film 1 is stable at 0.3-0.5MPa. The wedge-shaped fixed block 684 and the movable block 685 guide the ball bearing 686 to move in both directions, eliminating the unilateral tilt of the cutter head 682 and the pressure plate 64 caused by wear, and avoiding local overheating.

[0052] After the emulsion explosive is wrapped in the medicine film 1, it is heat-sealed to form a sealed medicine roll 2. The medicine roll 2 is straightened by multiple straightening rollers 69 to release the longitudinal stress of the medicine film 1 so that the emulsion explosive inside the medicine film 1 is evenly filled. Then, it enters the carrying platform and the clipping machine 5 on the buffer regulator 4 in sequence. The buffer regulator 4 stabilizes the conveying rhythm of the medicine roll 2 between the heat sealing machine 6 and the clipping machine 5. The clipping machine 5 uses a rotary heat sealing clamp to complete the secondary sealing of the end of the medicine roll 2.

[0053] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A quantitative packaging device for emulsion explosives, characterized in that: The invention comprises a medicine charging machine (3), a medicine discharge pipe (31) of the medicine charging machine (3) extends to the upper part of a frame (61), a heat sealing machine (6) is arranged above the frame (61) to receive the medicine discharge pipe (31), and a buffer regulating machine (4) and a card punching machine (5) are arranged in sequence behind the operation of the heat sealing machine (6); The heat sealing machine (6) includes a support block (62) arranged on a frame (61), a semicircular groove (621) is provided on the top surface of the support block (62) to adapt to the medicine outlet tube (31), the semicircular groove (621) is coaxially connected to the end of the medicine outlet tube (31), a limiting plate assembly (63) is provided on the semicircular groove (621), a pressure plate (64) is provided behind the limiting plate assembly (63), and a heat sealing knife assembly (68) is provided above the pressure plate (64); The heat sealing knife assembly (68) includes a knife body (681) controlled by a host computer (67), a knife head (682) movably arranged at the bottom of the knife body (681), and the knife head (682) dynamically adjusts its position so that the knife head (682) and the medicine film (1) are smoothly fitted together. A cavity is provided inside the blade body (681), wedge-shaped fixed blocks (684) are fixedly provided on both sides of the cavity, a movable block (685) is provided between the two fixed blocks (684), a triangular accommodating space (683) is formed between the movable block (685) and the two fixed blocks (684), and a ball (686) is provided in the accommodating space (683), and the ball (686) is used to control the left and right movement of the movable block (685), thereby controlling the up and down movement of the ball (686) on the other side, thereby realizing dynamic fine adjustment of the position of the blade head (682); Two guide rods (687) are integrally provided on the top of the cutter head (682), the top of the guide rod (687) abuts against the ball (686), a baffle (688) is provided around the guide rod (687), the guide rod (687) and the baffle (688) are integrally provided, the bottom of the baffle (688) covers the guide rod (687) and is provided with a spring (689), the bottom end of the spring (689) is fixed to the bottom of the blade (681), the spring (689) ensures the elastic contact between the guide rod (687) and the ball (686), and cooperates with the ball (686) to realize dynamic fine adjustment of the cutter head (682).

2. The quantitative packaging equipment for emulsion explosives according to claim 1, characterized in that: A film roller (65) is provided in the frame (61), and a direction-changing roller (66) is provided on the top surface of the frame (61) to adapt to the medicine outlet pipe (31). The medicine film (1) on the film roller (65) is changed in direction by the direction-changing roller (66) and extends to the medicine outlet pipe (31), and covers the medicine outlet pipe (31). The direction-changing roller (66) changes the front and rear path of the medicine film (1) into a V-shape, thereby realizing the change of direction of the medicine film (1).

3. The quantitative packaging equipment for emulsion explosives according to claim 1, characterized in that: The semicircular groove (621) of the support block (62) receives the end of the medicine outlet tube (31), and a limiting piece assembly (63) is provided 3 cm behind the axial side of the medicine outlet tube (31). The limiting piece assembly (63) and the semicircular groove (621) form a circular channel.

4. The quantitative packaging equipment for emulsion explosives according to claim 3, characterized in that: The limiting piece assembly (63) includes a first limiting piece (631) and a second limiting piece (632). The second limiting piece (632) is folded outward near the outer end of the first limiting piece (631) and has the same curvature as the outer end of the first limiting piece (631). The outer ends of the first limiting piece (631) and the second limiting piece (632) overlap, and the gap between the two is 0.4-0.6 mm. The outer ends of the first limiting piece (631) and the second limiting piece (632) are both provided with rollers (633) that roll along the axial direction of the medicine outlet tube (31). The rollers (633) are used to reduce the sliding friction resistance between the medicine film (1) and the limiting piece assembly (63) and eliminate wrinkles.

5. The quantitative packaging equipment for emulsion explosives according to claim 4, characterized in that: A pressure plate (64) is provided at 4-8 cm on the axial rear side of the limiting plate assembly (63), and the pressure plate (64) extends to the top of the medicine roll (2). The gap between the pressure plate (64) and the medicine roll (2) is 0.2-0.3 mm. A cutter head (682) is provided above the pressure plate (64), and the cutter head (682) and the pressure plate (64) are clamped to seal the medicine film (1), and the cutter head (682), the pressure plate (64) and the medicine film (1) are tightly joined by heat sealing.

6. The quantitative packaging equipment for emulsion explosives according to claim 5, characterized in that: The thickness of the pressure plate (64) is 0.5 mm, and the length of the pressure plate (64) is consistent with the length of the cutter head (682).

7. The quantitative packaging equipment for emulsion explosives according to claim 6, characterized in that: The surface of the pressure plate (64) is sprayed with a silicon nitride ceramic layer with a thickness of 50 μm to block heat transfer to the medicine coil (2).

8. The quantitative packaging equipment for emulsion explosives according to claim 7, characterized in that: A plurality of straightening rollers (69) are arranged on the axial rear side of the heat sealing knife assembly (68), and the plurality of straightening rollers (69) are evenly distributed on both sides of the medicine roll (2). The straightening rollers (69) on the same side are jointly driven to set an arc-shaped straightening belt, and the curvature of the inwardly sunken arc surface of the arc-shaped straightening belt matches the outer diameter of the medicine roll (2).

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