CN218197270U - Continuous spot-breaking device for bag making - Google Patents
Continuous spot-breaking device for bag making Download PDFInfo
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- CN218197270U CN218197270U CN202222731296.7U CN202222731296U CN218197270U CN 218197270 U CN218197270 U CN 218197270U CN 202222731296 U CN202222731296 U CN 202222731296U CN 218197270 U CN218197270 U CN 218197270U
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Abstract
The utility model discloses a continuous point-breaking device for bag making, which is arranged on a frame of a bag making machine and comprises point-breaking shafts which are relatively rotatably arranged on two sides of a continuously conveyed plastic bag, wherein the two point-breaking shafts are connected with a rotary driver; one of the point breaking shafts is a point breaking main shaft, a point breaking cutter is radially and slidably mounted on the point breaking main shaft, the other point breaking shaft is a point breaking auxiliary shaft, and a point breaking pad used for pricking the point breaking cutter is fixedly arranged on the point breaking auxiliary shaft; the machine frame is provided with a point breaking impactor capable of instantaneously impacting the point breaking cutter during point breaking, and the point breaking cutter is connected with a cutter withdrawal force applicator. The utility model discloses can realize the point at the high-speed transportation process of plastic bag and break, do benefit to and improve system bag efficiency, and the point is disconnected of high quality, does benefit to and guarantees the plastic bag quality.
Description
Technical Field
The utility model relates to a system bag machine technical field especially relates to a system bag is device of breaking in succession.
Background
The bag making machine is mainly used for continuous heat sealing and spot breaking production of plastic bags, and generally, the production of one plastic bag is accompanied by one heat sealing and one spot breaking. The prior bag making machine has bag making efficiency of 220-230 bags/min, better performance adjustment and highest performance, and can only reach 280-300 bags/min. The reason is that the prior bag making machine mainly adopts a vertical reciprocating structure to carry out point breaking and heat sealing operation; the structure can be realized only by configuring a relatively precise guide structure (such as a guide rod guide sleeve structure or a guide rail sliding seat structure) and a driving structure (such as an air cylinder) capable of realizing high-frequency reciprocating driving, and the reciprocating driving and matching guide structure often has the limitation of reciprocating frequency, so that the heat sealing or point breaking efficiency is difficult to be continuously improved to a certain degree; meanwhile, in the vertical reciprocating structure, the point breaking knife and the hot knife are static at the moment of point breaking or heat sealing, if the plastic bag is conveyed, the plastic bag is pulled and damaged, so that the plastic bag is stopped at the moment of point breaking or heat sealing to ensure the quality of point breaking or heat sealing, and the stop consumes the normal continuous operation time. Based on the limit of the reciprocating performance of the structural components and the influence of the conveying pause of the plastic bag, the efficiency of the conventional bag making machine is difficult to further improve.
The inventor improves the bag making machine aiming at the situation, and finds that the point breaking device is a difficult point in improvement, because the point breaking device needs the blade of the point breaking knife to pierce through the plastic bag to complete the point breaking action, if the moving speed of the point breaking knife at the moment of point breaking is slightly not matched with the conveying speed of the plastic bag, the phenomenon of scratching the plastic bag is easy to occur, so that the point breaking quality is poor, and even the plastic bag is damaged. Therefore, the problem needs to be solved by providing a point-breaking device which can realize point-breaking in the high-speed conveying process of plastic bags, is favorable for improving bag-making efficiency, has good point-breaking quality and is favorable for ensuring the quality of the plastic bags.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a can realize some absolutely in the high-speed transportation process of plastic bag, do benefit to and improve system bag efficiency, and some absolutely of high quality, do benefit to the system bag continuous point of guaranteeing the plastic bag quality and cut off the device.
In order to solve the technical problem, the technical scheme of the utility model is that: the continuous bag-making and spot-breaking device is arranged on a frame of a bag making machine and comprises spot-breaking shafts which are relatively rotatably arranged at two sides of a continuously conveyed plastic bag, and the two spot-breaking shafts are connected with a rotary driver; one of the point breaking shafts is a point breaking main shaft, a point breaking cutter is radially and slidably mounted on the point breaking main shaft, the other point breaking shaft is a point breaking auxiliary shaft, and a point breaking pad used for pricking the point breaking cutter is fixedly arranged on the point breaking auxiliary shaft; the machine frame is provided with a point breaking impactor which can instantaneously impact the point breaking knife during point breaking, and the point breaking knife is connected with a knife withdrawing force applicator.
As a preferred technical scheme, the point breaking impactor comprises an impact rotating shaft which is rotatably mounted on the rack, an impact rod is fixedly arranged on the impact rotating shaft, and an impact part capable of impacting the point breaking knife is arranged on the impact rod; the impact rotating shaft is connected with an impact control assembly.
As a preferred technical scheme, the impact control assembly comprises an impact control disc fixedly arranged on the spot-breaking main shaft, an impact transmission rod tangentially extending to the peripheral surface of the impact control disc is fixedly arranged on the impact rotating shaft, an impact reaction part pressed against the peripheral surface of the impact control disc is arranged on the impact transmission rod, and the impact transmission rod is connected with a pressing force applicator; the peripheral surface of the impact control disc is provided with a pull-bow slope for supporting the impact rod, and the tail end of the pull-bow slope is provided with a drop hammer breaking platform.
As a preferred technical scheme, a hot knife is fixedly arranged on the spot-breaking main shaft, and the spot-breaking pad is simultaneously used for hot-pressing setting of the hot knife.
As a preferable technical scheme, a heat sealing device is arranged on the bag coming side or the bag removing side of the two point breaking shafts on the machine frame.
As a preferred technical scheme, a first balancing weight positioned at the opposite side of the point breaking cutter is fixedly arranged on the point breaking main shaft; and a second balancing weight positioned on the opposite side of the point breaking cushion is fixedly arranged on the point breaking auxiliary shaft.
As a preferred technical scheme, at least two centrosymmetrically arranged point breaking knives are installed on the point breaking main shaft, and point breaking pads for pricking the point breaking knives are respectively arranged on the point breaking auxiliary shaft.
As a preferred technical scheme, point-breaking pressing plates are respectively and fixedly arranged on the point-breaking main shaft and positioned on two sides of the point-breaking knife.
By adopting the technical scheme, the continuous bag making and spot-breaking device is arranged on a rack of the bag making machine and comprises spot-breaking shafts which are relatively and rotatably arranged on two sides of a continuously conveyed plastic bag, and the two spot-breaking shafts are connected with a rotary driver; one point breaking shaft is a point breaking main shaft, a point breaking cutter is arranged on the point breaking main shaft in a radial sliding mode, the other point breaking shaft is a point breaking auxiliary shaft, and a point breaking pad used for pricking the point breaking cutter is fixedly arranged on the point breaking auxiliary shaft; the machine frame is provided with a point breaking impactor capable of instantaneously impacting the point breaking cutter during point breaking, and the point breaking cutter is connected with a cutter withdrawal force applicator. The utility model discloses dispose with the rotation mode the point sword of cutting off the line with when the point is broken and is filled up and rotate nearly point, both all exist with the linear velocity of plastic bag syntropy, and the plastic bag can realize the action of cutting off the line without the deceleration, consequently the utility model discloses can realize cutting off the line at the high-speed transportation in-process of plastic bag, do benefit to and improve system bag efficiency. The point-breaking knife is not in contact with the plastic bag before and after the point-breaking, instantaneous pricking is carried out only by the instantaneous point-breaking impact force of the point-breaking impactor, the point-breaking action is quick, the speed of the plastic bag is not obviously influenced, and the plastic bag is not easy to tear, so that the point-breaking with better quality is realized, and the quality of the plastic bag is favorably ensured.
Drawings
The following drawings are only intended to illustrate and explain the present invention, and do not limit the scope of the present invention. Wherein:
fig. 1 is a schematic structural diagram of a first embodiment of the present invention;
FIG. 2 isbase:Sub>A schematic view of the A-A structure of FIG. 1;
FIG. 3 is a schematic view of the structure B-B of FIG. 2;
FIG. 4 is a schematic view of the structure of FIG. 2 in direction C;
fig. 5 is a schematic structural diagram of a second embodiment of the present invention;
FIG. 6 is a schematic view of the D-D structure of FIG. 5;
FIG. 7 is a schematic view of the structure E-E of FIG. 6;
FIG. 8 is a schematic structural view of a sliding rod of a second two-point broken shaft according to an embodiment of the present invention, which is arranged in a staggered manner;
FIG. 9 is a schematic view of the F-F structure of FIG. 8;
FIG. 10 is a schematic view of the K-direction structure of FIG. 6;
fig. 11 is a schematic structural diagram of a third embodiment of the present invention.
In the figure: 1-a frame; 2-point broken shaft; 21-point breaking the main shaft; 22-dot break of the secondary shaft; 23-a rotary drive; 24-a first weight; 25-a second weight; 3-point cutting; 31-point breaking the pressing plate; 32-a slide bar; 33-a struck portion; 34-retracting the cutter force applying device; 4-point breaking the pad; 5-point breaking of the impactor; 51-impact shaft; 52-impact rod; 53-a striking section; 6-an impact control assembly; 61-impact control disc; 62-impact transmission rod; 63-an impact reaction section; 64-pressing applicator; 65-a pantograph ramp; 66-drop-off-hammer stand; 7-hot knife; 9-plastic bag.
Detailed Description
The invention is further explained below with reference to the drawings and examples. In the following detailed description, exemplary embodiments of the invention are described by way of illustration only. Needless to say, a person skilled in the art will recognize that the described embodiments can be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and not intended to limit the scope of the claims.
The first embodiment is as follows: as shown in fig. 1 to 4 together, the continuous bag-making and spot-cutting device is arranged on a frame 1 of a bag making machine, and comprises spot-cutting shafts 2 which are relatively and rotatably arranged on two sides of a continuously conveyed plastic bag 9, and two spot-cutting shafts 2 are connected with a rotary driver 23; one of the point breaking shafts 2 is a point breaking main shaft 21, a point breaking knife 3 is installed on the point breaking main shaft 21 in a radial sliding mode, the other point breaking shaft 2 is a point breaking auxiliary shaft 22, and a point breaking pad 4 used for being pricked by the point breaking knife 3 is fixedly arranged on the point breaking auxiliary shaft 22.
When the point breaking knife 3 and the point breaking pad 4 rotate to a near point, the point breaking knife 3 can complete point breaking action towards the pricking of the point breaking pad 4, and in order to ensure that the point breaking knife 3 and the point breaking pad 4 can simultaneously rotate to the near point, the point breaking main shaft 21 and the point breaking auxiliary shaft 22 can be relatively rotated at the same angular speed through double-sided toothed belt or gear transmission, the double-sided toothed belt transmission is adopted for indication in the embodiment, and therefore in the rotation driver 23, two point breaking shafts 2 can be realized by adopting one motor. Of course, the two snap-off shafts 2 may also be connected to a motor, as long as the motor can drive the two snap-off shafts 2 to rotate at the same angular speed.
The rotated near point is the position when the point breaking knife 3 and the point breaking pad 4 are simultaneously positioned on the central line of the two point breaking shafts 2 and between the two point breaking shafts 2. The arrangement of the point breaking cushion 4 is similar to that of a cushion plate in a conventional reciprocating structure, and a cushion rest is mainly provided for point breaking; conventionally, a point breaking avoiding groove corresponding to the cutting edge of the point breaking cutter 3 is arranged on the point breaking pad 4.
In this embodiment, the plastic bag 9 is horizontally conveyed, then the two breaking shafts 2 are respectively arranged at the upper side and the lower side of the plastic bag 9, and the breaking shaft 2 at the upper side is the breaking main shaft 21 and the breaking shaft 2 at the lower side is the breaking auxiliary shaft 22, of course, the positions of the two shafts can be changed; and when the plastic bag 9 is conveyed vertically or obliquely, the two breaking shafts 2 are arranged on the left side and the right side respectively. In addition, the sliding installation of the nodding knife 3 is illustrated in this embodiment, and is realized by forming a sliding hole on the nodding main shaft 21 and connecting a sliding rod 32 penetrating through the sliding hole to the nodding knife 3.
The machine frame 1 is provided with a point breaking impactor 5 which can instantaneously impact the point breaking knife 3 during point breaking, and the point breaking knife 3 is connected with a knife withdrawing force applicator 34. When the point breaking knife 3 and the point breaking pad 4 rotate to a close point, the point breaking impactor 5 impacts the point breaking knife 3 to enable the point breaking knife 3 to be instantaneously stabbed towards the point breaking pad 4, and point breaking is achieved; after the plastic bags are cut, the knife withdrawing force applicator 34 drives the cutting knives 3 to withdraw so as to rapidly avoid the plastic bags 9 without influencing the continuous conveying of the plastic bags 9. In the present embodiment, the spot-breaking main shaft 21 is fixedly provided with spot-breaking pressing plates 31 on two sides of the spot-breaking knife 3, so that when the spot-breaking main shaft is in the spot-breaking state, two sides of the plastic bag 9, which need to be in the spot-breaking position, can be pressed on the spot-breaking pad 4, and effective spot-breaking is further ensured.
This embodiment the some impactors 5 is installed including rotating impact pivot 51 in the frame 1, the fixed impact rod 52 that is equipped with on the impact pivot 51, be equipped with on the impact rod 52 and strike the impact portion 53 of some disconnected sword 3, of course be equipped with on the some disconnected sword 3 with the portion 33 that hits that impact portion 53 corresponds. The struck part 33 may be the body of the intermittent cutting knife 3, or may be a structure fixedly arranged on the intermittent cutting knife 3; in the embodiment, the sliding installation of the pinch-off knife 3 is realized by adopting the sliding rod 32 penetrating through the pinch-off main shaft 21, so that the other end of the sliding rod 32 extending out of the pinch-off main shaft 21 is used as the impacted part 33, which is convenient for realizing impact at a position far away from the pinch-off main shaft 21 and avoiding the occurrence of structural interference. Preferably, the impact part 53 is implemented by a rotatable structure such as a roller or a bearing, so as to avoid the impact process from generating resistance to the nodding main shaft 21; the striking part 33 may be made of plastic to reduce striking noise, but may be made of a rotatable structure such as a roller or a bearing. Also because of the sliding structure of the sliding rod 32 adopted by the pinch-off knife 3, the knife-retracting force applicator 34 of the present embodiment includes a knife-retracting spring sleeved on a portion of the sliding rod 32 extending out of the pinch-off main shaft 21.
The impact rotating shaft 51 is connected with an impact control component 6 to control the time of impact action. The impact control assembly 6 of this embodiment includes an impact control disc 61 fixedly disposed on the dot breaking spindle 21, an impact transmission rod 62 tangentially extending to an outer peripheral surface of the impact control disc 61 is fixedly disposed on the impact spindle 51, an impact reaction portion 63 pressed against the outer peripheral surface of the impact control disc 61 is disposed on the impact transmission rod 62, and the impact transmission rod 62 is connected with a pressing force applicator 64; the peripheral surface of the impact control disc 61 is provided with a bow-drawing slope 65 for supporting the impact rod 52, and the tail end of the bow-drawing slope 65 is provided with a drop hammer breaking table 66.
When the impact control disk 61 rotates with the pointing spindle 21, the impact reaction portion 63 is always pressed against the outer circumferential surface of the impact control disk 61. Before the guillotine cutter 3 is rotated to the near point, the impact reaction portion 63 starts to press against the pantograph slope 65, lifting the impact portion 53. When the pinch-off blade 3 is rotated to the near point, the impact reaction portion 63 instantaneously falls from the drop-off table 66 by the pressing force applying device 64, and the impact portion 53 is lifted to a certain height and hit against the hit receiving portion 33. After the pinch-off spindle 21 continues to rotate, the impacted part 33 leaves the impact part 53, the retracting force applicator 34 drives the pinch-off knife 3 to retract rapidly, and the rapid pinch-off action is completed.
In the present embodiment, the impact control disc 61 is provided on the tack-breaking spindle 21, and the impact control disc 61 is rotatable at the same angular velocity as the tack-breaking spindle 21, so that the positions of the bow 65 and the drop table 66 can be easily set in accordance with the rotational position of the tack-breaking tool 3. Of course, the impact control disc 61 may be disposed on another rotating shaft in transmission connection with the dot-breaking spindle 21 for impact control, and such equivalent technical means should be changed within the scope of the impact control assembly 6.
Preferably, a first balancing weight 24 positioned at the opposite side of the spot-breaking knife 3 is fixedly arranged on the spot-breaking main shaft 21; and a second balancing weight 25 positioned on the opposite side of the point breaking cushion 4 is fixedly arranged on the point breaking auxiliary shaft 22, so that the rotation vibration is reduced through balancing weight, and the stable and rapid operation of the rotation is ensured.
In the present embodiment, the point-breaking knife 3 is configured in a rotating manner, when the point-breaking knife 3 and the point-breaking pad 4 rotate to a close point, the same linear velocity as that of the plastic bag 9 exists in both the point-breaking knife 3 and the point-breaking pad, and the point-breaking action of the plastic bag 9 can be realized without reducing the speed, so that the point-breaking can be realized in the high-speed conveying process of the plastic bag 9 in the embodiment, which is beneficial to improving the bag-making efficiency. The point-breaking knife 3 is not in contact with the plastic bag 9 before and after the point-breaking, instantaneous pricking is carried out only by the impact force of the point-breaking impactor 5 in the instant of the point-breaking, the point-breaking action is quick, the speed of the plastic bag 9 is not obviously influenced, and the plastic bag 9 is not easy to scratch, so that the point-breaking with better quality is realized, and the quality of the plastic bag 9 is favorably ensured.
Example two: as shown in fig. 5 to 10, the present embodiment is different from the first embodiment mainly in that: the spot-breaking main shaft 21 is provided with two spot-breaking cutters 3 which are arranged in a central symmetry mode, and the spot-breaking auxiliary shaft 22 is provided with spot-breaking pads 4 which are used for being pricked by the two spot-breaking cutters 3 respectively. Therefore, the point breaking shaft 2 rotates for one circle, which is equivalent to two times of point breaking and heat sealing, so that the point breaking operation is easily performed in cooperation with the faster conveying speed of the plastic bag 9, and the bag making efficiency is further improved.
In this structure, the two pinch-off knives 3 can be slidably mounted by the slide bar 32, so that the two pinch-off knives 3 can be constructed by the common slide bar 32, as shown in fig. 6 and 7, and the two sides of the slide bar 32 extending out of the pinch-off main shaft 21 are respectively sleeved with the retracting springs, thereby forming the retracting force applicators 34. When the point breaking is not performed, the slide bar 32 can be in a middle position by the spring force equal to the retracting springs on the two sides, and the two point breaking knives 3 are both in a retracting state; when the point breaking is carried out, the point breaking impactor 5 can normally overcome the spring force of the tool retracting spring as in the first embodiment, so that the point breaking tool 3 which needs to carry out point breaking can realize instantaneous pricking.
Of course, both ends of the sliding rod 32 are provided with the impacted portions 33. Based on the central symmetry of the two end impact parts 33, in the impact control assembly 6, two centrosymmetric bow slopes 65 and drop hammer breaking platforms 66 are arranged on the impact control panel 61, so that the point breaking impactors 5 can be controlled in a unified manner, and the two point breaking cutters 3 are impacted in sequence in one rotation.
Besides the above structural solutions, the two pinch-off knives 3 may also be respectively provided with a slide bar 32 structure, and the slide bars 32 thereof may be staggered by a certain distance in the axial direction and the circumferential direction of the pinch-off main shaft 21, so as to realize the arrangement, as shown in fig. 8 and 9. In the spot-breaking impact tool 5, the impact portion 53 may be integrally provided to be capable of impacting the impact receiving portion 33 connected to the two spot-breaking knives 3, so that smooth performance of the two spot-breaking impacts can be uniformly controlled by the two symmetrical pantograph slopes 65 and the drop-weight breaking table 66 provided on the impact control plate 61. In this case, since the two spotting knives 3 are centrosymmetric and the struck portions 33 connected thereto are centrosymmetric, the positions of the two struck portions 33 that are struck are substantially the same positions in the circumferential direction of rotation, and the striking portion 53 only needs to be axially lengthened on the spotting spindle 21, so that striking can be performed on the two spotting knives 3.
Example three: as shown in fig. 11, the present embodiment is different from the first embodiment mainly in that: the point-breaking main shaft 21 is fixedly provided with a hot knife 7, and the point-breaking pad 4 is used for hot-pressing setting of the hot knife 7, namely, the hot sealing and the point-breaking are integrally arranged, so that the hot sealing can be completed together when the point-breaking is performed. Of course, the heat sealing is not limited to be integrated with the dot breaking, and the heat sealing device may be provided separately, that is, the heat sealing device is provided on the bag coming side or the bag removing side of the two dot breaking shafts 2 on the frame 1.
The foregoing shows and describes the general principles, essential features, and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only illustrative of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the present invention, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. Continuous point of system bag cuts device sets up in the frame of system bag machine, its characterized in that: comprises point broken shafts which are relatively and rotatably arranged at two sides of a continuously conveyed plastic bag, and the two point broken shafts are connected with a rotating driver; one of the point breaking shafts is a point breaking main shaft, a point breaking cutter is radially and slidably mounted on the point breaking main shaft, the other point breaking shaft is a point breaking auxiliary shaft, and a point breaking pad used for pricking the point breaking cutter is fixedly arranged on the point breaking auxiliary shaft; the machine frame is provided with a point breaking impactor capable of instantaneously impacting the point breaking cutter during point breaking, and the point breaking cutter is connected with a cutter withdrawal force applicator.
2. The bag-making continuous spot-breaking apparatus of claim 1, wherein: the point breaking impactor comprises an impact rotating shaft which is rotatably arranged on the rack, an impact rod is fixedly arranged on the impact rotating shaft, and an impact part capable of impacting the point breaking knife is arranged on the impact rod; the impact rotating shaft is connected with an impact control assembly.
3. The bag-making continuous spot-breaking apparatus of claim 2, wherein: the impact control assembly comprises an impact control disc fixedly arranged on the point breaking main shaft, an impact transmission rod tangentially extending to the peripheral surface of the impact control disc is fixedly arranged on the impact rotating shaft, an impact reaction part pressed against the peripheral surface of the impact control disc is arranged on the impact transmission rod, and the impact transmission rod is connected with a pressing force applicator; the peripheral surface of the impact control disc is provided with a pull-bow slope for supporting the impact rod, and the tail end of the pull-bow slope is provided with a drop hammer breaking platform.
4. The bag-making continuous spot-breaking apparatus of claim 1, wherein: the spot-breaking main shaft is fixedly provided with a hot knife, and the spot-breaking pad is used for hot-pressing the hot knife.
5. The bag-making continuous spot-breaking apparatus of claim 1, wherein: and a heat sealing device is arranged on the bag coming side or the bag removing side of the two point breaking shafts on the rack.
6. The bag-making continuous spot-breaking apparatus of claim 1, wherein: a first balancing weight block positioned on the opposite side of the point breaking cutter is fixedly arranged on the point breaking main shaft; and a second balancing weight positioned on the opposite side of the point breaking cushion is fixedly arranged on the point breaking auxiliary shaft.
7. The bag-making continuous spot-breaking apparatus of claim 1, wherein: the point breaking main shaft is provided with at least two point breaking cutters which are arranged in a central symmetry mode, and the point breaking auxiliary shaft is provided with point breaking pads which are used for being pricked by the two point breaking cutters respectively.
8. The bag-making continuous spot-breaking apparatus of claim 1, wherein: and point breaking pressing plates are respectively fixedly arranged on the two sides of the point breaking main shaft, which are positioned on the point breaking knife.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222731296.7U CN218197270U (en) | 2022-10-18 | 2022-10-18 | Continuous spot-breaking device for bag making |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222731296.7U CN218197270U (en) | 2022-10-18 | 2022-10-18 | Continuous spot-breaking device for bag making |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218197270U true CN218197270U (en) | 2023-01-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222731296.7U Active CN218197270U (en) | 2022-10-18 | 2022-10-18 | Continuous spot-breaking device for bag making |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218197270U (en) |
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2022
- 2022-10-18 CN CN202222731296.7U patent/CN218197270U/en active Active
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