Batch packaging buckle production system

Abstract

The utility model relates to a batch packaging buckle production system which comprises a slitting device, an automatic tiling device, a feeding device, a block fixing device and a bending forming device. The slitting device is used for longitudinally cutting the raw material steel plate roll into a plurality of steel plate strips; the automatic tiling device is used for tidily tiling the multiple steel plate strips cut by the splitting device and adjusting the positions of the multiple steel plate strips. The feeding device is used for conveying the steel plate strips to the bending forming device in a fixed-length and positioned mode. The block fixing device is used for clamping and fixing a steel plate strip to be profiled; the bending forming device is used for simultaneously cutting and segmenting the plurality of steel plate strips and bending and forming the plurality of steel plate strips; the system has the advantages that 48 packing buckles can be produced in each stroke of the system, so that the production efficiency is improved by dozens of times under the same time.

Description

Technical Field

[0001] The utility model relates to the technical field of packing buckle production, in particular to a batch packing buckle production system. Background Art

[0002] Packing buckles are used to fix the joints of strapping tape to make it more secure.

[0003] At present, the production method of strapping buckles is the single-chip computer method, which is to divide the existing 1250 mm steel plate coil into 48 26 mm steel plate strips, and then rewind them into 48 discs, and then send them to the manufacturer's single-chip computer for single-piece molding production. Since only one strapping buckle is produced in each stroke, this not only has low production efficiency, but also increases the slitting cost and transportation cost. Utility Model Content

[0004] In view of the above problems, the purpose of the utility model is to provide a batch packing buckle production system, which is used to directly open and divide 1250 mm steel plates into strips, flatten and shape them, and batch press them on one device. Since 48 packing buckles are produced in each stroke, the production efficiency is increased by dozens of times in the same time.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A batch strapping buckle production system, comprising: a striping device, an automatic flattening device and a bending and forming device;

[0007] Wherein, the stripping device is used to longitudinally shear the raw material steel plate into a plurality of steel strips;

[0008] The automatic paving device is used to lay out the multiple steel strips cut by the slitting device neatly and adjust the positions of the multiple steel strips; the automatic paving device includes a front paving mechanism and a rear paving mechanism, the front paving mechanism is used to pre-pave and shape the multiple steel strips cut by the slitting device, and the rear paving mechanism is used to accurately lay out and shape the steel strips pre-paved and shaped by the front paving mechanism;

[0009] The front paving mechanism comprises a shaping plate, on which two rows of evenly distributed shaping holes are formed, and the two rows of shaping holes are arranged in a staggered manner, and the two rows of shaping holes are used to lay out the multiple steel strips passing through;

[0010] The rear paving mechanism includes: two upper and lower clamping plates, and a positioning plug plate. The upper and lower clamping plates are used to pass the steel strips pre-laid and shaped by the front paving mechanism. The clamping plates are evenly distributed with a plurality of avoidance holes. The positioning plug plate is vertically inserted into the avoidance holes to space the middle layer of the upper and lower clamping plates to accurately determine the distance between the two steel strips. The two positioning plug plates are positioned by the steel strips.

[0011] The bending and forming device is used to simultaneously cut, segment and bend a plurality of steel strips.

[0012] As a preferred embodiment of the utility model, a pockmarking device is installed before the stripping device, and the pockmarking device is used to pock the surface of the raw material steel plate coil, and the friction between the packing buckle and the packing belt is increased by the pockmarks. The pockmarking device comprises: two groups of rolling mechanisms, each group of rolling mechanisms is composed of optical axis rollers and pockmarking wheels arranged up and down, and the optical axis rollers and the pockmarking wheels are used to pass the raw material steel plate and roll the raw material steel plate with pockmarks, and the pockmarking wheels and optical axis rollers between two adjacent groups of rolling mechanisms are cross-arranged, that is, the pockmarking rollers in the front row are arranged above the optical axis rollers, and the pockmarking rollers in the rear row are arranged below another optical axis roller, so that pockmarks arranged alternately on the upper and lower surfaces of the steel plate are rolled out.

[0013] As a preferred embodiment of the utility model, the slitting device includes: upper and lower slitting machine shafts, and annular knives mounted on the upper and lower slitting machine shafts, the annular knives evenly distributed on the upper slitting machine shaft and the annular knives evenly distributed on the lower slitting machine shaft are arranged in a staggered manner, and the two sides of the annular knives serve as blades, and the blades of the annular knives on the upper slitting machine shaft and the blades of the annular knives on the adjacent lower slitting machine shaft shear the raw material steel plate coil into steel plate strips.

[0014] As a preferred embodiment of the utility model, the bending and forming device includes: a lower die, an upper die, an intermediate die and a transverse die, the upper die is provided with an upper shearing blade, the lower die is provided with a lower shearing blade corresponding to the upper shearing blade, the upper shearing blade and the lower shearing blade are used to cut the steel strips into steel plates, the intermediate die is used to place the steel plates, the upper die is provided with a bending groove at the position corresponding to the intermediate die, the upper die and the lower die are closed to shear the steel strips into steel plates, at the same time, the bending groove and the intermediate die press the steel plates into a downward U-shape, and the transverse die and the intermediate die squeeze one side of the steel plate inward to form the packing buckle.

[0015] As a preferred embodiment of the utility model, it also includes a block fixing device, which is used to position the steel plate strip to be pressed. The block fixing device includes: a pressure plate, an ejector pin and a compression spring. The upper mold of the bending and forming device is provided with a plurality of ejector pin through holes. The number of the ejector pin through holes corresponds to the position of the steel plate, and the number is more than twice that of the steel plate, so that each steel plate is pressed by at least two ejector pins. The ejector pin passes through the ejector pin through hole and contacts the steel plate. A compression spring is provided above each ejector pin. The compression spring squeezes the ejector pin to position the steel plate on the middle mold of the bending and forming device, so that the steel plate on the middle mold does not move during the shearing and pressing process. The compression spring is used to assist the ejector pin to hold the steel plate on the middle mold.

[0016] As a preferred embodiment of the utility model, it also includes a lifting and discharging mechanism, which is used to push the formed packing buckle out of the bending and forming device. The lifting and discharging mechanism includes: a lifting plate, a discharging plate, and an avoidance groove opened on the middle mold of the bending and forming device, the position and number of the avoidance groove correspond to the packing buckle, and a plurality of lifting protrusions are evenly distributed on the lifting plate, the number and position of the lifting protrusions correspond to the avoidance groove, the lifting protrusions of the lifting plate are placed in the avoidance groove and are located below the packing buckle, the lifting plate lifts the packing buckle on the middle mold through the lifting protrusion, and the discharging plate pushes the lifted packing buckle out of the middle mold.

[0017] The advantages and positive effects of the utility model are:

[0018] 1. Compared with the traditional production mode, the present invention is a single-piece production mode, that is, a 1250 mm steel plate is divided into 48 26 mm steel strips, the steel strips are rewound back into the steel strip disc, and then transported to the single-chip machine for forming. Since the single-piece production mode in the prior art only produces one strapping buckle per stroke, the present invention directly processes the 1250 mm steel plate as a whole, that is, 48 ​​strapping buckles are produced in one stroke, thereby improving the production efficiency by dozens of times.

[0019] 2. The present invention installs a pockmarking device between the raw material steel plate coil rack and the slitting device, so that the raw material steel plate coil is pockmarked before being cut into strips, thereby achieving continuous pockmarking, which is more efficient than the previous method of stamping and pockmarking a single steel plate strip after slitting.

[0020] 3. The slitting device of the present invention uses staggered cutting knives installed on two upper and lower machine shafts, so that the blades of adjacent cutting knives become scissors to shear the steel strips. Compared with the previous method of installing the same number of blades as the number of steel strips to be cut on the two machine shafts, not only the number of cutting knives is reduced by half, but the present invention also uses an annular knife (in the form of a sleeve, with both sides of the sleeve being the blades) and there is no need to adjust the gap between the blades.

[0021] 4. The present invention aims to solve the problem that burrs exist on both sides of steel strips after shearing by annular knives, and the staggered arrangement of annular knives makes the burr surfaces of odd-numbered steel strips and adjacent even-numbered steel strips opposite to each other. By adding a flipping process, the burr orientations of the steel strips entering the automatic flattening device are unified, and finally preparations are made for simultaneous cutting, segmenting and bending of multiple steel strips by the bending and forming device.

[0022] 5. The automatic paving device of the present invention is composed of two front and rear paving mechanisms. The front paving mechanism adopts a steel plate welding method, and can also be laser hollowed out to meet the initial paving and pre-paving requirements, and is characterized by having greater mechanical strength. The rear paving mechanism adopts a splint blade structure, which is characterized by high paving accuracy and stable operation. This meets the subsequent product molding requirements. In addition, the overall paving structure of the present application has the characteristics of simple structure, high accuracy, and stable effect.

[0023] 6. The feeding device of the present invention can be installed between the front and rear paving mechanisms, and is responsible for feeding materials at a fixed length, time and location.

[0024] 7. In the present invention, because 48 steel strips enter the bending and forming device and are sheared into 48 steel plates, displacement will occur during profiling, which will affect the yield rate, so they must be fixed and restricted. The present invention adds a block fixing device, whose structure is on the upper touch of the bending and forming device, and is mainly composed of a row of ejector pins and compression springs. The number of the ejector pins and compression springs must be sufficient to ensure that at least two ejector pins are pressed on each block, so as to achieve the purpose of stably fixing the steel plates.

[0025] 8. In the present invention, since all the steel strips have been flattened and adjusted in position by the automatic flattening device, and the length of the bending and forming device corresponds to the length of all the steel strips after being flattened, the bending and forming device can form all the steel strips at one time.

[0026] 9. The present invention adds a material lifting and discharging mechanism to discharge the packing buckles formed on the bending and forming device. When the packing buckles are formed, their three sides are surrounded by the central mold of the bending and forming device. The material lifting and discharging mechanism of the present application adopts a material lifting groove (avoidance groove) on the central mold. After the packing buckles are formed, they are lifted upward by the lifting plate (one side of the finished product is completely lifted above the central mold by the lifting plate), and the discharging plate pushes the blank forward at the same time. Thus, a cycle is completed. Repeatedly. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall process in the utility model.

[0028] Figure 2 It is a structural schematic diagram of the pitting device in the utility model.

[0029] Figure 3 It is a structural schematic diagram of the slitting device in the utility model.

[0030] Figure 4 It is a schematic diagram of the structure of the automatic tiling device in the utility model.

[0031] Figure 5 It is a structural schematic diagram of the block fixing device in the utility model.

[0032] Figure 6 It is a schematic diagram of the structure of the bending and forming device in the utility model.

[0033] Figure 7 It is a structural schematic diagram of the material lifting and discharging mechanism in the utility model.

[0034] Description of the drawings: Raw material steel plate coil rack 1, pitting device 2, smooth axis roller 201, pitting roller 202, roller 203, pitting wheel 204, interval 205, slitting device 3, upper slitting machine shaft 301, lower slitting machine shaft 302, annular knife 303, turning station 4, automatic paving device 5, front paving mechanism 501, rear paving mechanism 502, shaping plate 503, shaping hole 504, clamping plate 50 5. Positioning plug plate 506, feeding device 6, block fixing device 7, ejector pin 701, return spring 702, pressure plate 703, bending forming device 8, lower die 801, upper die 802, middle die 803, transverse die 804, upper shear blade 805, lower shear blade 806, bending groove 807, material lifting and discharging mechanism 9, discharging plate 901, lifting plate 902, avoidance groove 903, lifting protrusion 904. DETAILED DESCRIPTION

[0035] In the following description, for the purpose of illustration, in order to provide a comprehensive understanding of one or more embodiments, many specific details are set forth. However, it is apparent that these embodiments may also be implemented without these specific details. In other examples, for ease of describing one or more embodiments, known structures and devices are shown in the form of block diagrams.

[0036] See also Figure 1-7The present embodiment provides a batch strapping buckle production system, including: a raw material unwinding machine 1, a pitting device 2, a stripping device 3, a turning station 4, an automatic flattening device 5, a feeding device 6, a block fixing device 7, a bending and forming device 8, and a material lifting and discharging mechanism 9; the raw material unwinding machine 1 is used to flatten a 1250 mm (this is a commonly used size and can also be 1000 mm or smaller) steel plate coil, and then send it to subsequent equipment for processing and forming, wherein the stripping device 3 needs to complete 48 strips; before the stripping device 3, the steel plate to be divided needs to be pitted, and the 48 A pitting wheel will pit the steel plate. The friction between the strapping buckle and the strapping tape can be increased by pitting the steel plate. A flipping station 4 needs to be added between the stripping device 3 and the automatic flattening device 5. After flipping, the burrs of all steel strips are uniformly positioned and then enter the automatic flattening device 5. The automatic flattening device 5 will flatten the multiple steel strips cut by the stripping device neatly. After entering the bending and forming device 8, the flattened steel strips are fixed and positioned by the block fixing device 7 to prevent them from shifting during the forming process. The bending and forming device simultaneously cuts, segments and bends 48 steel strips. The lifting and discharging mechanism 9 pushes the formed strapping buckle out of the bending and forming device 8. The feeding device 6 is installed between the front flattening mechanism and the rear flattening mechanism of the automatic flattening device 5, and is used for feeding according to the fixed length.

[0037] See also Figure 1 and Figure 2 In this embodiment, a pitting device 2 is installed between the raw material steel plate coil flattening machine 1 and the stripping device 3. The pitting device 2 is used to make pits (concave and convex points) on the surface of the raw material steel plate coil, and the friction between the packing buckle and the packing belt is increased by the pitting. Since the present invention installs the pitting device between the raw material steel plate coil flattening machine and the stripping device, the raw material steel plate coil is pitted before being cut into strips, so that rolling pitting can be achieved. Compared with the previous single steel plate strip punching pitting, the efficiency of pitting is higher. The dotting device 2 comprises: two groups of rolling mechanisms, each group of rolling mechanisms is composed of a smooth axis roller 201 and a pitting roller 202 arranged up and down, the smooth axis roller 201 and the pitting roller 202 are used to pass the raw material steel plate and roll the raw material steel plate with pits, and the two pitting rollers 202 and the two smooth axis rollers 201 between two adjacent groups of rolling mechanisms are arranged crosswise, that is, the pitting rollers 202 of the front row are arranged above the smooth axis rollers 201, and the pitting rollers 202 of the rear row are arranged below the smooth axis rollers 201. Among them, the pitting wheels 204 on the two adjacent pitting rollers 202 are arranged in a staggered manner, that is, the pitting wheel 204 on the front pitting roller 202 corresponds to the interval gap 203 on the rear pitting roller 202, and in addition, the pitting wheel 204 is provided with an adjusting top screw for adjusting the radial gap between the pitting wheel 204 and the roller to improve the pitting effect.

[0038] See also Figure 1 and Figure 3 The slitting device 3 in this embodiment includes: an upper slitting machine shaft 301, a lower slitting machine shaft 302, and annular knives 303 mounted on the upper slitting machine shaft 301 and the lower slitting machine shaft 302. The annular knives 303 evenly arranged on the upper slitting machine shaft 301 and the annular knives 303 evenly arranged on the lower slitting machine shaft 302 are arranged in a staggered manner, that is, the annular knives 303 on the upper slitting machine shaft 301 correspond to the gaps between the annular knives 303 on the lower slitting machine shaft 302, and the two sides of the annular knives 303 serve as blades. The blades of the annular knives 303 on the upper slitting machine shaft 301 and the blades of the annular knives 303 on the adjacent lower slitting machine shaft 302 shear the raw material steel plate into multiple steel plate strips.

[0039] See also Figure 1 In this embodiment, a flipping station 4 is added between the slitting device 3 and the automatic paving device 5. The flipping station 4 is used to flip the odd-numbered steel strips so that the burr surface is in the same direction as the even-numbered steel strips. The reason is that there are burrs on both sides of the steel strips after shearing by the annular knife, and the staggered annular knife makes the burr surface of the odd-numbered steel strips opposite to that of the adjacent even-numbered steel strips. The flipping station 4 is used to flip and adjust the odd or even-numbered steel strips cut by the slitting device so that the orientation of the steel strips entering the automatic paving device is unified. When 48 steel strips come out of the slitting device 3, half of the steel strips with pits and burrs facing upwards can be flipped over by flipping, ensuring that the pits and burrs of all steel strips remain in the same downward direction.

[0040] See also Figure 1 and Figure 4 The automatic paving device 5 in this embodiment includes: a front paving mechanism 501 and a rear paving mechanism 502, the front paving mechanism 501 is used to pre-pave and shape the multiple steel strips divided by the stripping device 3, and the rear paving mechanism 502 is used to accurately pave and shape the steel strips pre-paved and shaped by the front paving mechanism 501;

[0041] The front paving mechanism 501 includes a shaping plate 503, on which two rows of evenly spaced shaping holes 504 are formed, and the two rows of shaping holes 504 are arranged in a staggered manner, that is, the gap between the two shaping holes 504 in the upper row corresponds to the shaping holes 504 in the lower row, and the two rows of shaping holes 504 are used to flatten the multiple steel strips passing through, wherein the shaping plate 503 adopts a thin steel plate welding method, or a laser hollowing method, because the mechanical strength of the front paving mechanism 501 is relatively high. This satisfies the high mechanical strength requirements of the initial paving structure;

[0042] The rear tiling mechanism 502 includes: two upper and lower clamping plates 505, and a positioning plug plate (the present invention adopts a wallpaper blade) 506. The space between the upper and lower clamping plates 505 is used to pass the steel strips pre-tiled and shaped by the front tiling mechanism 501. The upper and lower clamping plates 505 are evenly provided with a plurality of avoidance holes. The positioning plug plate 506 is vertically inserted into the avoidance holes to space the middle layer of the upper and lower clamping plates 505. The distance between the two positioning plug plates 506 is used to pass the steel strips, thereby achieving a precise tiling effect.

[0043] See also Figure 1 and Figure 6 The bending and forming device 8 in this embodiment includes: a lower die 801, an upper die 802, an intermediate die 803 and a transverse die 804. The upper die 802 is provided with an upper shearing blade 805, and the lower die 801 is provided with a lower shearing blade 806 at a position corresponding to the upper shearing blade 805. The upper shearing blade 805 and the lower shearing blade 806 are used to shear the steel strips into steel plates. The L-shaped intermediate die 803 is used to place the steel plates. The upper die 802 is provided with a bending groove 807 at a position corresponding to the intermediate die 803. After the upper die 802 and the lower die 801 are molded together, the steel strips are sheared into steel plates. At the same time, the bending groove 807 and the intermediate die 803 squeeze the steel plates into a downward U-shape. Finally, the transverse die 804 and the intermediate die 803 are molded together to squeeze one side of the U-shaped steel plate inward to form the packaging buckle.

[0044] See also Figure 5 The block fixing device 7 in this embodiment includes: a pressing plate 703, an ejector pin 701 and a compression spring 702. A plurality of ejector pin through holes are provided on the upper die 802 of the bending and forming device 8. The number of the ejector pin through holes corresponds to the position of the steel plate, and the number is more than twice the number of the steel plate. The ejector pin 701 passes through the ejector pin through holes and contacts the steel plate. The pressing plate squeezes the ejector pin 701 to position the steel plate on the middle die 803 of the bending and forming device 8, so that the steel plate on the middle die 803 is prevented from displacement during the shearing process of the upper shearing blade 805 and the lower shearing blade 806. The compression spring 702 is sleeved on the ejector pin 701, and the compression spring 702 is used to assist the ejector pin 701 in holding the steel plate on the middle die 803.

[0045] See also Figure 7 The material lifting and discharging mechanism 9 in this embodiment includes: a material lifting plate 902, a discharging plate 901, and an avoidance groove 903 provided on the middle mold 803 of the bending forming device 8. The position and number of the avoidance groove 903 correspond to the packing buckle. A plurality of material lifting protrusions 904 are evenly arranged on the material lifting plate 902. The number and position of the material lifting protrusions correspond to the avoidance groove 903. The material lifting protrusions of the material lifting plate 902 are placed in the avoidance groove 903 and are located below the packing buckle. The material lifting plate 902 lifts the packing buckle on the middle mold 803 through the material lifting protrusions, and the discharging plate 901 pushes the lifted packing buckle out of the middle mold 803. Figure 7 The lifting plate 902 is located on one side above the middle mold 803. When the lifting plate 902 is located behind the middle mold 803, the lifting plate 902 pushes one side of the straight edge of the packing buckle, thereby completing the discharge.

[0046] The workflow includes the following steps:

[0047] Step S1: The steel plate on the raw material steel plate coil flattening machine 1 is directly fed into the pitting device 2, and the pitting device 2 is used to pit the surface of the steel plate, so as to increase the friction between the packing buckle and the packing belt through the pitting;

[0048] Step S2: conveying the pitted steel plate to the slitting device 3, and using the slitting device 3 to longitudinally cut the steel plate into 48 steel strips;

[0049] Step S3: using a flipping device to flip down half (24) of the 48 steel strips with burrs facing upwards after being cut by the slitting device 3 so that the burrs of the steel strips entering the automatic paving device 5 are uniformly facing downwards;

[0050] Step S4: 48 steel strips in the same direction are placed into the 48 shaping holes 504 of the front paving mechanism 501 of the automatic paving device 5, and the 48 steel strips are pre-shaped by paving through the 48 shaping holes 504 of the front paving mechanism 501. Since the front paving mechanism 501 adopts a thin steel plate welding method or a laser hollowing method, its paving mechanical strength is relatively high, thereby meeting the initial paving effect and greater mechanical strength requirements. Then, the steel strips pre-paved by the front paving mechanism 501 are inserted into the interlayer of the rear paving mechanism 502, and adjusted by the upper and lower clamping plates 505, and then adjusted by the positioning plug plate 506, to achieve a precise paving effect, which is characterized by high paving precision and stable operation. This meets the subsequent product molding requirements.

[0051] Step S5: using the feeding device 6 to size and position the 48 steel strips after flattening and shaping, and feeding them to the bending and forming device 8 to complete the bending and forming;

[0052] Step S6: using the block fixing device 7 to clamp and fix the steel strip to be profiled entering the bending and forming device 8 to prevent the steel strip from deflecting during the profiling process;

[0053] Step S7: using the bending and forming device 8 to simultaneously cut, segment and bend the 48 steel strips;

[0054] Step S8: using the lifting and discharging mechanism 9 to lift and discharge the formed packing buckle from the bending and forming device 8.

[0055] The above are only specific implementations of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

[0056] The above are only specific implementations of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A batch strapping buckle production system, characterized in that: include: Slitting device, automatic paving device and bending and forming device; Wherein, the stripping device is used to longitudinally shear the raw material steel plate into a plurality of steel strips; The automatic paving device is used to lay out the multiple steel strips cut by the slitting device neatly and adjust the positions of the multiple steel strips; the automatic paving device includes a front paving mechanism and a rear paving mechanism, the front paving mechanism is used to pre-pave and shape the multiple steel strips cut by the slitting device, and the rear paving mechanism is used to accurately lay out and shape the steel strips pre-paved and shaped by the front paving mechanism; The front paving mechanism comprises a shaping plate, on which two rows of evenly distributed shaping holes are formed, and the two rows of shaping holes are arranged in a staggered manner, and the two rows of shaping holes are used to lay out the multiple steel strips passing through; The rear paving mechanism comprises: two upper and lower clamping plates, and a positioning plug plate. The upper and lower clamping plates are used to pass the steel strips pre-paved and shaped by the front paving mechanism. The clamping plates are evenly provided with a plurality of avoidance holes. The positioning plug plate is vertically inserted into the avoidance holes to space the middle interlayer of the upper and lower clamping plates to accurately determine the distance between the two steel strips. The two positioning plug plates are positioned by the steel strips. The bending and forming device is used to simultaneously cut, segment and bend a plurality of steel strips.

2. A batch strapping buckle production system according to claim 1, characterized in that: A pockmarking device is installed before the stripping device, and the pockmarking device is used to pock the surface of the raw material steel plate coil, and the friction between the packing buckle and the packing belt is increased through the pockmarks. The pockmarking device comprises: two groups of rolling mechanisms, each group of rolling mechanisms is composed of smooth axis rollers and pockmarking wheels arranged up and down, and the smooth axis rollers and the pockmarking wheels are used to pass the raw material steel plate and roll the raw material steel plate with pockmarks, and the pockmarking wheels and smooth axis rollers between two adjacent groups of rolling mechanisms are arranged crosswise, that is, the pockmarking rollers in the front row are arranged above the smooth axis rollers, and the pockmarking rollers in the rear row are arranged below another smooth axis roller, so that pockmarks arranged alternately on the upper and lower surfaces of the steel plate are rolled out.

3. A batch strapping buckle production system according to claim 1, characterized in that: The slitting device includes: upper and lower slitting machine shafts, and annular knives mounted on the upper and lower slitting machine shafts. The annular knives evenly distributed on the upper slitting machine shaft and the annular knives evenly distributed on the lower slitting machine shaft are arranged in a staggered manner. The two sides of the annular knives serve as blades. The blades of the annular knives on the upper slitting machine shaft and the blades of the annular knives on the adjacent lower slitting machine shaft shear the raw material steel plate coil into steel plate strips.

4. A batch strapping buckle production system according to claim 1, characterized in that: The bending and forming device includes: a lower die, an upper die, an intermediate die and a transverse die. The upper die is provided with an upper shearing blade, and the lower die is provided with a lower shearing blade corresponding to the upper shearing blade. The upper shearing blade and the lower shearing blade are used to cut the steel strips into steel plates. The intermediate die is used to place the steel plates. The upper die is provided with a bending groove at a position corresponding to the intermediate die. After the upper die is closed with the lower die, the steel strips are sheared into steel plates. At the same time, the bending groove and the intermediate die press the steel plates into a downward U-shape. The transverse die and the intermediate die squeeze one side of the steel plate inward to form the packing buckle.

5. A batch strapping buckle production system according to claim 1, characterized in that: It also includes a block fixing device, which is used to position the steel plate strips to be pressed. The block fixing device includes: a pressing plate, an ejector pin and a compression spring. The upper mold of the bending and forming device is provided with a plurality of ejector pin through holes. The number of the ejector pin through holes corresponds to the position of the steel plate block, and the number of the ejector pin through holes is more than twice that of the steel plate block, so that each steel plate block is pressed by at least two ejector pins. The ejector pin passes through the ejector pin through hole and contacts the steel plate block. A compression spring is provided above each ejector pin. The compression spring squeezes the ejector pin to position the steel plate block on the middle mold of the bending and forming device, so that the steel plate block on the middle mold does not move during the shearing and pressing process. The compression spring is used to assist the ejector pin to hold the steel plate block on the middle mold.

6. A batch strapping buckle production system according to claim 1, characterized in that: It also includes a lifting and discharging mechanism, which is used to push the formed packing buckle out of the bending and forming device. The lifting and discharging mechanism includes: a lifting plate, a discharging plate, and an avoidance groove opened on the middle mold of the bending and forming device. The position and number of the avoidance groove correspond to the packing buckle. The lifting plate is evenly provided with a plurality of lifting protrusions, and the number and position of the lifting protrusions correspond to the avoidance groove. The lifting protrusions of the lifting plate are placed in the avoidance groove and are located below the packing buckle. The lifting plate lifts the packing buckle on the middle mold through the lifting protrusions, and the discharging plate pushes the lifted packing buckle out of the middle mold.

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