Bag holding device of powdery emulsified explosive packaging machine

Abstract

The utility model relates to the technical field of powdery emulsion explosive production equipment, in particular to a bag holding device applied to a powdery emulsion explosive packaging machine, which is driven by a motor instead of a traditional air cylinder, optimizes the structure of a bag holding transfer mechanism, adopts the design of an anti-explosion variable frequency motor, an adjustable proximity switch and an arc chuck, and improves the production efficiency. The problems that in the prior art, parts are prone to damage, and dust corrodes and collides are solved. The device comprises a guide rail, rollers, an arc-shaped clamping plate, a bag opening clamping strip and a jolt ramming mechanism, displacement is cooperatively controlled through a motor and a connecting rod, and stable transfer of packaging bags is achieved in combination with an air cylinder and clamping actions. The device is simple in structure, stable in operation, low in maintenance cost and suitable for a high-risk dust environment, and the production efficiency can be remarkably improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of powder emulsion explosive production equipment, specifically to a bag holding device applied to powder emulsion explosive packaging machine, which is used for clamping, transferring and accurately positioning the packaging bag during the packaging process. BACKGROUND

[0002] During the production of powder emulsion explosive, after powder preparation, the powder needs to be quantitatively conveyed to the hopper of the packaging machine and weighed. After reaching the standard weight, the discharge port of the packaging machine is opened, and the explosive falls into the packaging bag to complete the filling. A vibrating station is arranged below the packaging bag to control the up-and-down movement of the stainless steel plate to pat the bottom of the packaging bag, so as to vibrate the explosive in the bag and avoid excessive looseness. Due to the existence of the vibrating station, no conveying belt is arranged below the discharge port, and the filled packaging bag needs to be transferred to the rear conveying belt to continue the guiding, edge folding and sealing of the packaging bag.

[0003] Currently, the packaging bag is moved to the conveying belt by increasing a transfer mechanism to realize continuous operation. For example, Chinese patent CN116081023A discloses a powder emulsion explosive large bag sealing and conveying device, which is provided with a bag holding and transferring mechanism. The extension and retraction of the cylinder drive the rotation of the connecting rod to control the overall clamping movement of the two side columns on the powder emulsion explosive packaging bag, and then the bag holding and walking cylinder control mechanism is displaced on the given guide rail to move the held explosive to the conveying belt and then release it. After completing the action, the mechanism is reset to transfer the next explosive.

[0004] However, the existing technology has some disadvantages, which are as follows:

[0005] 1. The overall clamping action involves the movement of multiple connecting rods, and there are relatively many rotating pairs. When the overall clamping movement of the side columns is performed, the action amplitude is large, which easily causes damage to the components and reduces the service life.

[0006] 2. When a single cylinder is used to control the displacement of the bag transferring mechanism, the cylinder needs to be large in size. Moreover, when the bag transferring mechanism reaches the preset position, it cannot be immediately stopped, and there is a "collision" phenomenon. Long-time operation easily causes deformation of the mechanism and loud noise.

[0007] 3. The explosive dust that falls during the packaging process of the powder emulsion explosive can corrode the sensors and the bag holding and walking cylinder, which needs to be regularly maintained and repaired, increasing the use cost.

[0008] 4. High-intensity use of the cylinder easily causes wear of the sealing parts and other parts, and the maintenance frequency is high. In particular, in winter with low temperature, the above problems are more prominent.

[0009] Therefore, it is necessary to provide a bag holding device with a simplified structure, stable operation and adaptability to harsh environments. The utility model discloses a bag holding device for powder emulsion explosive packaging machine

[0010] To solve the prior art defects, the utility model provides a bag holding device of simplified structure, stable operation and adaptation to severe environment, which improves equipment reliability and reduces maintenance cost through motor driving combined with modular clamping design.

[0011] Specific technical scheme: the utility model provides a bag holding device of powder emulsion explosive packaging machine, include:

[0012] Clamping mechanism is provided with fixed support and is used for clamping the middle part and bag mouth of packaging bag;

[0013] Driving mechanism is used for controlling the displacement of clamping mechanism;

[0014] Position detection component is connected with the signal of driving mechanism, is used for detecting the displacement state of clamping mechanism and triggers brake;

[0015] Wherein, the driving mechanism moves the clamping mechanism between the jolt station and the conveying station through linear motion, and the clamping mechanism realizes clamping and loosening action through pneumatic actuator.

[0016] In an embodiment, the driving mechanism includes a motor, a link assembly, and a guide rail. The motor drives the clamping mechanism to reciprocate along the guide rail through the link assembly.

[0017] In an embodiment, the position detection component includes a proximity switch and an adjustable baffle. The adjustable baffle rotates synchronously with the movement of the driving mechanism and controls the start and stop of the driving mechanism through cooperation with the proximity switch.

[0018] In an embodiment, the proximity switch is installed in an arc chuck, and the position of the arc chuck is adjustable to adapt to different stroke ranges.

[0019] In an embodiment, the clamping mechanism is further provided with:

[0020] A first cylinder is fixedly installed on the fixed support and is used for driving the arc-shaped clamping plate to clamp the middle part of the packaging bag.

[0021] A second cylinder is fixedly installed on the fixed support and is used for driving the bag mouth clamping strip to clamp the opening of the packaging bag.

[0022] In an embodiment, the driving mechanism and the clamping mechanism are connected through a Y-shaped interface and a joint bearing to realize multi-degree-of-freedom transmission.

[0023] In an embodiment, the position detection component is linked with a brake system, which can brake the driving mechanism immediately after detecting the preset displacement, eliminating inertial impact.

[0024] In one embodiment, the fixing supports are symmetrically arranged on both sides of the vibrating station, and the bottoms are connected by a cross bar to form a rigid frame.

[0025] Advantages:

[0026] The utility model discloses a bag holding device structure optimization, adopts motor drive control bag holding device's displacement, replaces traditional cylinder control mode, effectively improves the stability and service life of equipment, and reduces the maintenance cost. Meanwhile, through the simplification of bag holding mechanism's mechanical structure, the use of connecting rod and rotary pair is reduced, and the risk of component damage is reduced. The independent cylinder control of bag holding clamping plate and bag mouth clamping strip, and the closed installation of proximity switch further enhance the reliability and adaptability of the equipment. These improvements not only improve the production efficiency, but also reduce the operation failure rate, so that the bag holding device is more efficient, stable and safe in the packaging process of powdery emulsion explosive, has remarkable economic benefit and popularization value. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is the whole structure (empty load) schematic diagram of the bag holding device of the utility model;

[0028] Figure 2 It is the structure schematic diagram when the bag holding device of the utility model loads;

[0029] Figure 3 It is the assembly detail display drawing of the driving mechanism and clamping mechanism of the utility model;

[0030] Figure 4 It is the structure schematic diagram of the clamping mechanism of the utility model;

[0031] In the drawing: 1, motor;2, driving connecting rod;201, adjustable baffle;3, transmission connecting rod;301, joint bearing;401, roller;402, fixed support;403, first cylinder;404, second cylinder;405, arc clamping plate;406, bag mouth clamping strip;407, Y type interface;408, cross bar;501, guide rail;502, arc chuck;503, proximity switch;504, vibrating cylinder;505, supporting plate;6, discharging port;7, conveying belt;8, packaging bag. DETAILED DESCRIPTION

[0032] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings of the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0033] AsFigures 1 to 4 The utility model provides a kind of bag holding device of powder emulsion explosive packing machine, comprising: clamping mechanism, it is provided with fixed support 402, for clamping the middle part and bag mouth of packing bag 8;Driving mechanism, for the displacement of clamping mechanism is controlled;Position detection component is connected with the driving mechanism signal, for detecting the displacement state of the clamping mechanism and triggering brake;

[0034] Wherein, the driving mechanism moves the clamping mechanism between the jolting station and the conveying station by linear motion, and the clamping mechanism realizes clamping and loosening action by pneumatic actuator.

[0035] By introducing position detection component in the whole process of packing bag 8 bag holding and moving, the position of clamping mechanism is monitored in real time and brake signal is sent to driving mechanism in time, so that clamping mechanism can be stopped in time, to ensure that clamping mechanism will not deviate or equipment will not be accidentally hit due to the inertia of driving mechanism and itself when it reaches the designated bag holding position or resets, effectively ensuring the stability and safety of device operation. At the same time, in the process of clamping packing bag 8, pneumatic actuator, such as air cylinder, is used to directly drive the closing clamping and separation loosening of clamping mechanism, so as to simplify the clamping mode and structure, while ensuring the convenience and stability of clamping and loosening, further reducing the risk of high failure rate and short service life caused by complex clamping structure.

[0036] As shown in Figure 3 Optionally, the driving mechanism includes motor 1, connecting rod assembly and guide rail 501, the motor 1 drives the clamping mechanism to move back and forth along the guide rail 501 through the connecting rod assembly. Wherein the connecting rod assembly can be composed of driving link 2 and transmission link 3, one end of the driving link 2 is fixedly connected with the output shaft of the motor 1, the other end is rotatably connected with one end of the transmission link 3 through bearing, and the other end of the transmission link 3 is drivingly connected with the clamping mechanism.

[0037] Further, in order to ensure the stability, consistency and smoothness of the whole clamping mechanism during movement, optionally, the two fixed supports 402 in the clamping mechanism are symmetrically arranged on the two sides of the jolting station, and the two fixed supports 402 are connected to form an integral rigid frame through the fixed connection of the bottom cross bar 408, to ensure the synchronization of the movement of the two fixed supports 402. Wherein, Y-shaped interface 407 can be arranged on the side of the cross bar 408 facing the motor 1, and then joint bearing 301 is installed on the end of the transmission link 3 away from the driving link 2, and the joint bearing 301 is rotatably connected with the Y-shaped interface 407, thereby constructing a transmission path from the motor 1, the driving link 2, the transmission link 3, the cross bar 408 to the clamping mechanism.

[0038] In addition, the lower end of the fixed support 402 can be slidingly installed on the guide rail 501 to constrain the movement path and direction of the clamping mechanism by the guide rail 501. Specifically, the common method of clamping the guide rail 501 above and below the roller 401 can be used to achieve the rolling installation of the fixed support 402 on the guide rail 501.

[0039] Specifically, when the bag 8 needs to be held, the motor 1 is started, the output shaft of the motor 1 is positively or negatively deflected, the driving link 2 is swung, and then the cross bar 408 and the clamping mechanism fixedly connected thereto are pushed to move reciprocatingly along the guide rail 501, thereby completing the switching and transferring of the bag 8 between the self-vibration work station and the conveying work station. The guide rail 501 and the motor 1 are fixedly installed on the frame structure to ensure the relative stillness therebetween. In order to meet the safety requirements of the explosive packaging workshop on electrical appliances, the motor 1 can be selected as an explosion-proof variable frequency motor 1, such as the YEJ series motor produced by Puhua Automation (Shanghai) Co., Ltd.

[0040] Further, as shown in Figure 4 The clamping mechanism can further be provided with a first cylinder 403 fixedly installed on the fixed support 402 for driving the arc-shaped clamping plate 405 to clamp the middle part of the bag 8, and a second cylinder 404 fixedly installed on the fixed support 402 for driving the bag opening clamping strip 406 to clamp the opening of the bag 8.

[0041] The first cylinder 403 and the second cylinder 404 can be fixedly installed on the fixed support 402 in sequence from bottom to top, wherein the extension end of the first cylinder 403 is fixedly installed with the arc-shaped clamping plate 405, and the extension end of the second cylinder 404 is fixedly installed with the bag opening clamping strip 406. The same arrangement is also provided on the other symmetrical fixed support 402. Therefore, when the bag 8 needs to be clamped, the first cylinder 403 and the second cylinder 404 control the extension of the extension end to push each group of symmetrically distributed bag opening clamping strips 406 and arc-shaped clamping plates 405 to approach each other from above the self-vibration work station, until the two arc-shaped clamping plates 405 driven by the two first cylinders 403 respectively embrace the middle part of the bag 8, and the two bag opening clamping strips 406 driven by the two second cylinders 404 respectively clamp and close the opening of the bag 8, thereby completing the entire clamping process of the bag 8.

[0042] After the clamping is stable, the fixed bracket 402 will move linearly along the guide rail 501 towards the conveyor belt 7 under the drive of the motor 1 and the linkage assembly. The bag opening clamping strip 406 and the arc-shaped clamping plate 405 on the fixed bracket 402 will also carry the clamped packaging bag 8 along with it during the stable movement of the fixed bracket 402, until the fixed bracket 402 is pushed along the guide rail 501 to both sides of the conveyor belt 7. At this point, the packaging bag 8 is clamped and positioned above the conveyor belt 7 by the bag opening clamping strip 406 and the arc-shaped clamping plate 405. Then, the telescopic ends of the first cylinder 403 and the second cylinder 404 are retracted to reset, releasing the packaging bag 8. Now freed from the constraint of the clamping mechanism, the packaging bag 8 will be transported away due to the rotation of the conveyor belt 7. The entire clamping mechanism will then reset and move back to the top of the vibration compaction station along the guide rail 501 as the output shaft of the motor 1 rotates in the opposite direction, for the clamping and transfer of the next packaging bag 8, and so on, repeating the cycle.

[0043] Optionally, the position detection component includes a proximity switch 503 and an adjustable baffle 201. The adjustable baffle 201 rotates synchronously with the movement of the drive mechanism and controls the start and stop of the drive mechanism by cooperating with the proximity switch 503. The proximity switch 503 is installed in an arc-shaped chuck 502, the position of which is adjustable to adapt to different stroke ranges.

[0044] like Figure 3 As shown, based on the distance between the clamping mechanism and the conveyor belt 7, i.e., the feed stroke length required for the clamping mechanism to transport the packaging bag 8 onto the conveyor belt 7, the angle to which the output shaft of the motor 1 needs to deflect is determined. To precisely control the start and stop of the motor 1 and ensure that the clamping mechanism reaches the correct position each time it moves, a disc can be fixedly installed at the end of the output shaft of the motor 1. Multiple holes are evenly distributed on the surface of the disc near its edge. An arc-shaped adjustable baffle 201 is then inserted into the disc through these holes, thus fixing the adjustable baffle 201 to the disc. Optionally, two insertion posts extend outward from the back of the adjustable baffle 201, and the adjustable baffle 201 is fixed by the interference fit between the insertion posts and the holes.

[0045] Furthermore, an arc-shaped chuck 502 extends from the frame structure on which motor 1 is fixedly mounted towards the output end of motor 1. The surface of the arc-shaped chuck 502 has two arc-shaped through slots, which are coaxial with the disc and the output shaft of motor 1. Then, using the bolt and nut structure provided with the proximity switches 503, two proximity switches 503 can be installed into the two arc-shaped through slots respectively. This completes the assembly of the position detection component. The proximity switches 503 can be selected from the E2E-X1R5E1 M8 NPN model manufactured by Omron Automation (China) Co., Ltd.

[0046] Specifically, when the output shaft of the motor 1 rotates, the arc-shaped adjustable baffle 201 fixedly installed on the disc will rotate synchronously. The rotating adjustable baffle 201 will shield the above-mentioned two proximity switches 503 in turn during reciprocating deflection. Whenever a proximity switch 503 is shielded by the adjustable baffle 201, the proximity switch 503 will send a control signal to control the motor 1 to stop working. Among them, the existence of the arc-shaped through slot can make the installation position of the proximity switch 503 very flexible. The staff can flexibly adjust the central angle of the two proximity switches 503 and / or adjust the plug-in position of the adjustable baffle 201 on the disc according to the required stroke range of the clamping mechanism, so as to timely trigger the motor 1 to stop working when the motor 1 deflects to the specified angle, so that the clamping mechanism can accurately reach the specified position.

[0047] Furthermore, in order to avoid the situation that the motor 1 still has inertia after stopping work, causing the clamping mechanism position to be misaligned. The position detection assembly can be linked with the brake system, so that when the proximity switch 503 controls the motor 1 to stop working, the brake system is triggered to work to brake the output shaft of the motor 1 to avoid the influence of inertia on the position control of the clamping mechanism.

[0048] Specifically, the brake system can select the electromagnetic brake or reverse braking mode commonly used in existing technologies. Taking the electromagnetic brake as an example, it is arranged at the output shaft of the motor 1. When the electromagnetic brake receives the braking signal sent by the proximity switch 503, it immediately works to brake the output shaft of the motor 1, thereby overcoming the influence of the inertia of the motor 1 on the clamping mechanism. The above-mentioned braking modes have specific structures and braking principles which are existing technologies and will not be described here.

[0049] The specific working process is as follows: when the explosive filling of the discharge port 6 is completed, the vibration cylinder 504 below the packaging bag 8 is triggered to send an opening signal. The vibration cylinder 504 stretches and contracts according to the preset stroke to pat the supporting plate 505 at the bottom of the packaging bag 8. After completing the preset number of times of stretching and contracting, the stretching and contracting end of the vibration cylinder 504 resets, and then the motor 1 is triggered to start. After the motor 1 rotates, the driving link 2 drives the clamping mechanism to displace towards the discharge port 6. When it displaces to the specified position, the adjustable baffle 201 shields a certain proximity switch 503, which sends a signal to control the motor 1 to stop working and triggers the brake system to brake the motor 1. In this way, the motor 1 can immediately stop rotating, and the clamping mechanism can quickly and smoothly stop moving. At this time, the first cylinder 403 and the second cylinder 404 start working to make the bag-holding clamping plate hold the middle part of the packaging bag 8 and the bag opening clamping strip 406 hold the bag opening of the packaging bag 8, and then the discharge port 6 releases the packaging bag 8.

[0050] When the packaging bag 8 is held for a preset time, the motor 1 is started again to drive the clamping mechanism to move towards the conveying belt 7, and when the displacement reaches the specified position, the adjustable baffle 201 blocks the other proximity switch 503, so that the motor 1 stops working and triggers the brake system to brake the motor 1. At the same time, a signal is sent to control the first cylinder 403 and the second cylinder 404 to reset, so that the bag holding clamp plate and the bag opening clamping strip 406 retract, respectively, to loosen the middle of the packaging bag 8 and the bag opening of the packaging bag 8. Thus, the process of transferring the packaging bag 8 from the vibrating and compacting station to the conveying station is completed.

[0051] In summary, by optimizing the structure of the bag holding device, the motor 1 is used to drive and control the displacement of the bag holding device, replacing the traditional cylinder control mode, effectively improving the stability and service life of the equipment, and reducing the maintenance cost. At the same time, by simplifying the mechanical structure of the bag holding mechanism, the use of connecting rods and rotating pairs is reduced, and the risk of component damage is reduced. The independent cylinder control of the arc-shaped clamp plate 405 and the bag opening clamping strip 406, and the closed installation of the proximity switch 503, further enhance the reliability and adaptability of the equipment. These improvements not only improve the production efficiency, but also reduce the operation failure rate, so that the bag holding device is more efficient, stable and safe in the packaging process of the powdered emulsion explosive, has significant economic benefits and popularization value.

[0052] Although the embodiments of the utility model have been shown and described above, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A bag gripping device for a powdered emulsion explosive packaging machine, characterized in that, The utility model relates to a kind of packing bag vibration and conveying device, including: Clamping mechanism is provided with fixed support (402), for clamping the middle part and bag mouth of packing bag (8); Driving mechanism is used to control the displacement of clamping mechanism; Position detection component is signal connected with the driving mechanism, for detecting the displacement state of the clamping mechanism and triggering brake; Wherein, the driving mechanism moves the clamping mechanism between vibration station and conveying station by linear motion, and the clamping mechanism realizes clamping and loosening action by pneumatic actuator.

2. The bag gripping apparatus of a powdered emulsion explosive packaging machine according to claim 1, characterized by: The driving mechanism includes motor (1), connecting rod assembly and guide rail (501), and the motor (1) drives clamping mechanism to reciprocate along the guide rail (501) by the connecting rod assembly.

3. The bag gripping apparatus of a powdered emulsion explosive packaging machine according to claim 2, characterized by: The position detection component includes proximity switch (503) and adjustable baffle (201), and the adjustable baffle (201) rotates synchronously with the movement of driving mechanism, and the start-stop of driving mechanism is controlled by cooperating with the proximity switch (503).

4. The bag gripping apparatus of a powdered emulsion explosive packaging machine according to claim 3, characterized in that: The proximity switch (503) is installed in arc chuck (502), and the position of the arc chuck (502) is adjustable to adapt to different stroke range.

5. The bag gripping apparatus of a powdered emulsion explosive packaging machine according to claim 1, wherein: The clamping mechanism is also provided with: First air cylinder (403), fixedly installed on fixed support (402), for driving arc clamping plate (405) to clamping middle part of packing bag (8); Second air cylinder (404), fixedly installed on fixed support (402), for driving bag mouth clamping strip (406) to clamping packing bag (8) opening.

6. The bag gripping apparatus of a powdered emulsion explosive packaging machine according to claim 1, wherein: The driving mechanism and clamping mechanism are connected through Y-shaped interface (407) and knuckle bearing (301), to realize multi-degree-of-freedom transmission.

7. The bag gripping apparatus of a powdered emulsion explosive packaging machine according to claim 1, wherein: The position detection component and brake system linkage can brake driving mechanism immediately after detecting preset displacement, to eliminate inertial impact.

8. The bag gripping device of a powdered emulsion explosive packaging machine according to any one of claims 1 to 7, characterized in that: The fixed support (402) is symmetrically arranged on both sides of vibration station, and the bottom is connected to form rigid frame through cross bar (408).

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