Marking device and punching equipment for marking batch numbers on workpieces

Abstract

The present invention relates to a marking device for marking a batch number on a workpiece and a stamping device having the marking device. The marking device comprises a ratchet pawl mechanism, a base and a driving mechanism. The ratchet pawl mechanism comprises a character wheel, a ratchet and a pawl, the character wheel and the ratchet are fixedly connected and rotatably supported on the base through a rotating shaft, a plurality of different character codes for representing the batch number are evenly spaced on the periphery of the character wheel, and the pawl is used to push the ratchet wheel together with the character wheel to rotate to change the batch number. The driving mechanism comprises a driving cylinder and a fluid power source, the fluid power source is connected to the driving cylinder through a pipeline and can provide power to the driving cylinder through the pipeline so that the driving cylinder drives the pawl to reciprocate. Through the present invention, on the one hand, it is possible to achieve a more ergonomic and safer change of the batch number by the operator, and on the other hand, it is possible to achieve a quick change of the batch number without opening the mold, thereby improving production efficiency.

Description

Technical Field

[0001] The present invention relates to the field of stamping parts manufacturing, in particular to the field of vehicle body stamping parts manufacturing, and specifically to a marking device for marking batch numbers on workpieces and a stamping device having the marking device. Background Art

[0002] With the market demand, the models are constantly updated and the output is increasing. Stamping is the first process of the four major processes. The high quality of automobiles starts from stamping. Therefore, the quality requirements for stamping parts in the vehicle field are becoming more and more stringent. In the daily production process of the stamping workshop, changing the batch number of each production batch is a necessary process for parts quality traceability and a very important link.

[0003] In the field of stamping equipment, a marking device is usually installed in the mold, which is used to mark the batch number of the workpiece when the mold is stamping the workpiece. The marking device has at least one rotatable character wheel, and a plurality of different character codes, usually numbers, are uniformly engraved on the outer circumference of the character wheel. By rotating each character wheel, the character code at the marking position can be changed, thereby changing the batch number.

[0004] Under normal circumstances, the stamping workshop needs to change the batch number for each order it produces. However, since the marking device is installed inside the mold, there are generally two ways to change this mark. One is to take up the time of the stamping production line to change it online, and the other is to use equipment such as an overhead crane offline to separate the upper and lower molds and manually adjust the batches. Both methods will cause great waste in the entire production process. In the first case, each time the production line stops to allow the operator to enter the production line to adjust the batch mark, it takes about 3 minutes. Calculated based on the maximum line speed of the stamping production line of 17 minutes, each order loses 51 strokes of production capacity. In the second case, a special In a site equipped with an overhead crane, it takes an average of 20 to 30 minutes each time to open the mold, adjust the batch, and close the mold. A person who has mastered the overhead crane and batch changing skills is also required. In both cases, the upper and lower molds need to be separated, and there must be enough safe space for operators to enter the mold to manually operate the marking device. When the batch number needs to be changed, the operator needs to manually turn the various character wheels of the marking device inside the mold to change the batch number. This process is not ergonomic. In addition, the operator who changes the batch number has to enter the inside of the stamping machine and the mold, and the internal structure of the stamping machine and the mold is very complex, which poses a certain safety risk to the operator. Summary of the invention

[0005] Therefore, the task of the present invention is to provide a marking device for marking batch numbers on workpieces and a stamping device having the marking device, which, on the one hand, can enable the operator to change the batch number in a more ergonomic and safer manner, and on the other hand, can also quickly change the batch number without opening the mold of the stamping device, thereby improving production efficiency.

[0006] The first aspect of the present invention relates to a marking device for marking batch numbers on workpieces, the marking device comprising a ratchet pawl mechanism, a base and a driving mechanism. The ratchet pawl mechanism comprises a character wheel, a ratchet and a pawl, the character wheel and the ratchet are fixedly connected and rotatably supported on the base through a rotating shaft, a plurality of different character codes for representing the batch number are evenly spaced on the outer periphery of the character wheel, and the pawl is used to push the ratchet wheel to rotate together with the character wheel to change the batch number. The driving mechanism comprises a driving cylinder and a fluid power source, the driving cylinder is connected to the pawl, the fluid power source is connected to the driving cylinder through a pipeline and can provide power to the driving cylinder through the pipeline, so that the driving cylinder drives the pawl to reciprocate.

[0007] Therefore, according to the marking device of the first aspect of the present invention, each required character code is evenly engraved on the outer periphery of the rotatable character wheel, and the character code located at the marking position is changed by the rotation of the character wheel. The rotation of the character wheel is achieved by the rotation of the ratchet wheel fixedly connected thereto. The rotation of the ratchet wheel is achieved by the push of the pawl. The reciprocating motion of the pawl realizes the rotation of the ratchet wheel together with the character wheel, and the reciprocating motion of the pawl is achieved by a driving mechanism including a drive cylinder body and a fluid power source. When the batch number needs to be changed, that is, when the character code located at the marking position needs to be changed, the operator can control the pipeline between the fluid power source and the drive cylinder body to be connected, so that the fluid power source provides the drive cylinder body with power to drive the pawl to move through the pipeline, and then the pawl pushes the ratchet wheel to drive the character wheel to rotate, without the operator having to laboriously turn the character wheels of the marking device by hand. In particular, when the control of the driving mechanism of the marking device is set outside the stamping equipment or outside the mold of the stamping equipment, the operator only needs to control the on and off of the pipeline between the fluid power source and the driving cylinder outside the stamping equipment or outside the mold to achieve rapid and automatic replacement of the batch number. There is no need to separate the upper and lower molds first and then enter the mold for manual replacement as in the traditional method.

[0008] In one embodiment of the first aspect of the present invention, the drive cylinder body may be a pneumatic cylinder, and the fluid power source may be a pneumatic source. Preferably, the drive cylinder body may be a single-acting pneumatic cylinder. Conventional stamping lines are usually equipped with a pneumatic source. Therefore, according to the marking device of the present invention, without the aid of a specially provided power source, the operator only needs to plug in the pneumatic source once before production to change the batch number once. In addition, the batch number can be changed without taking up production time or opening the mold, that is, the batch number can be changed when the mold is closed.

[0009] In an alternative embodiment of the first aspect of the present invention, the drive cylinder body may be a hydraulic cylinder, and the fluid power source may be a hydraulic source. Preferably, the drive cylinder body may be a single-acting hydraulic cylinder.

[0010] In one embodiment of the first aspect of the present invention, the driving mechanism may further include a transmission portion and a guide portion, wherein the transmission portion is configured to connect the drive cylinder body with the pawl, and the transmission portion is configured to be guided to reciprocate in the guide portion under the drive of the drive cylinder body, thereby driving the pawl to reciprocate.

[0011] Furthermore, a movable piston and a driving rod connected to the piston may be provided in the driving cylinder, and the driving rod is connected to the transmission part by means of threads.

[0012] In one embodiment of the first aspect of the present invention, a switch valve for connecting or disconnecting the pipeline may be provided in the pipeline, so that an operator can simply operate the switch valve to connect or disconnect the pipeline to change the batch number without manually turning the character wheel.

[0013] Furthermore, the marking device may further include a controller, which is electrically connected to the switch valve and configured to control the connection or disconnection of the pipeline through the switch valve, thereby further reducing manual operations.

[0014] In one embodiment of the first aspect of the present invention, the ratchet pawl mechanism may include a plurality of character wheels and a plurality of ratchets, the number of the character wheels and the ratchets being the same, wherein each character wheel is fixedly connected to a corresponding ratchet and rotatably supported on the base through the rotating shaft, and a plurality of different character codes are evenly spaced on the periphery of each character wheel, wherein the batch number is composed of a character code on each character wheel. Accordingly, the pawl may include a plurality of shift forks, the number of the shift forks being the same as the number of the ratchets, and each shift fork is used to push a corresponding ratchet together with the character wheel fixedly connected to the ratchet to rotate. This makes it possible to simply and safely implement the change of batch numbers with multiple digits.

[0015] In one embodiment of the first aspect of the present invention, the ratchet and pawl mechanism may include a first character wheel, a second character wheel, a first ratchet and a second ratchet, and the pawl may include a first fork and a second fork accordingly. The first character wheel and the first ratchet are fixedly connected and rotatably supported on the base through the rotating shaft, and a plurality of different first character codes are evenly spaced on the outer periphery of the first character wheel, and the first fork is used to push the first ratchet to rotate together with the first character wheel. The second character wheel and the second ratchet are fixedly connected and rotatably supported on the base through the rotating shaft, and a plurality of different second character codes are evenly spaced on the outer periphery of the second character wheel, and the second fork is used to push the second ratchet to rotate together with the second character wheel. Wherein, the batch number consists of a first character code and a second character code. Similarly, a ratchet and pawl mechanism with more character wheels and more ratchets can be designed according to the above-mentioned arrangement structure and working principle.

[0016] Furthermore, the pawl is configured such that, under the drive of the driving mechanism, after the first shift fork pushes the first ratchet wheel and the first character wheel to rotate by a plurality of first character intervals, the second shift fork pushes the second ratchet wheel and the second character wheel to rotate by a second character interval. Thus, the rotation of a plurality of character wheels can be driven by the same driving mechanism, so that the marking device according to the present invention is more compact.

[0017] In an implementation manner of the first aspect of the present invention, the character codes may be integers from 0 to 9, or the character codes may be single letters.

[0018] In one embodiment of the first aspect of the present invention, the marking device may further include a counter, which includes at least one other rotatable character wheel, on the outer circumference of which a plurality of different numbers are evenly spaced apart.

[0019] In one embodiment of the first aspect of the present invention, the marking device may have dimensions not exceeding 10 cm x 5 cm x 10 cm.

[0020] The second aspect of the present invention relates to a stamping device for manufacturing stamped parts, the stamping device comprising a stamping die and at least one marking device, the stamping die is used to stamp the workpiece to be manufactured, the at least one marking device is constructed as the marking device according to the first aspect of the present invention and is constructed to mark the batch number of the workpiece to be manufactured when the stamping die stamps the workpiece to be manufactured. Thus, when it is necessary to change the character code located at the marking position, the operator can simply and quickly control the pipeline connection between the fluid power source and the drive cylinder body, so that the fluid power source provides the drive cylinder body with power to drive the pawl to move through the pipeline, and then the pawl pushes the ratchet wheel to drive the character wheel to rotate, without the operator having to laboriously manually turn the individual character wheels of the marking device as in the traditional way.

[0021] In one embodiment of the second aspect of the present invention, a switch valve for connecting or disconnecting the pipeline may be provided in the pipeline of the driving mechanism of the at least one marking device, and the switch valve may be arranged outside the stamping die; and / or, the fluid power source of the driving mechanism of the at least one marking device may be arranged outside the stamping die. Thus, the operator only needs to control the connection and disconnection of the pipeline between the fluid power source and the driving cylinder outside the die to realize the rapid and automatic replacement of the batch number, without entering the die for manual replacement.

[0022] In one embodiment of the second aspect of the present invention, the marking device may also have a counter, the counter comprising at least one other rotatable character wheel, and a plurality of different numbers are evenly spaced on the outer circumference of the other rotatable character wheel. The stamping die comprises an upper die and a lower die that can move relative to each other, and the counter is constructed to be linked with the relative movement of the upper die and the lower die, so that the other rotatable character wheel rotates when the upper die and the lower die move relative to each other to stamp the workpiece to be manufactured, thereby realizing counting. Thus, the marking device according to the present invention can be integrated with automatic batch number marking and automatic counter marking at the same time. Thus, fully automated marking in the manufacture of stamped parts is achieved. Moreover, the marking device can realize the character code changes that can be driven separately in two sets of character code systems through different power without interfering with each other. At the same time, the marking device according to the present invention does not require a larger accommodating space compared with the marking device of the prior art, so it can be used to modify existing stamping equipment.

[0023] In one embodiment of the second aspect of the present invention, the stamping device is configured to produce metal stamping parts.

[0024] For other embodiments and advantages of the stamping device according to the second aspect of the present invention, reference can be made to the above description of the various embodiments of the marking device according to the first aspect of the present invention, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Various embodiments of the present invention will be described in more detail below with reference to the accompanying drawings, in which:

[0026] Figure 1 A schematic front view of a marking device provided in accordance with an embodiment of the present invention;

[0027] Figure 2 for Figure 1 A schematic right side view of the marking device shown in FIG.

[0028] Figure 3 for Figure 1 A schematic bottom view of the marking device shown in FIG.

[0029] Figure 4 A schematic structural diagram of a driving mechanism provided in one embodiment of the present invention;

[0030] Figure 5 A schematic three-dimensional diagram of a pawl provided in accordance with an embodiment of the present invention;

[0031] Figure 6 A schematic block diagram of a stamping device provided in one embodiment of the present invention. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] Throughout the specification, unless otherwise specifically stated, the terms used herein should be understood as meanings commonly used in the art. Therefore, unless otherwise defined, all technical and scientific terms used herein have the same meanings as those generally understood by those skilled in the art to which the present invention belongs. In the event of a conflict, the present specification takes precedence.

[0034] It should be noted that, in the embodiments of the present invention, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a method or device including a series of elements includes not only the elements explicitly stated, but also other elements not explicitly listed, or also includes elements inherent to the implementation of the method or device. In the absence of further restrictions, an element defined by the sentence "includes a ..." does not exclude the existence of other related elements in the method or device including the element.

[0035] It should be noted that the terms "first\second\third" involved in the embodiments of the present invention are only used to distinguish similar objects, and do not represent a specific order for the objects. It is understandable that the specific order or sequence of "first\second\third" can be interchanged where permitted. It should be understood that the objects distinguished by "first\second\third" can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein.

[0036] Usually, the space for marking devices inside the die of a stamping machine is limited. How to quickly and automatically change batch numbers in a limited space has always been a difficult problem faced by the stamping field. Especially when the batch number has multiple digits, the various wheels of the marking device are arranged side by side relatively closely, and the intervals between each wheel are very small. It is time-consuming to turn the wheels one by one, and it is easy to affect the wheels next to it when turning the current wheel. In addition, there are safety hazards for operators to enter the mold to operate the marking device.

[0037] Therefore, in order to reduce the production time and resource waste caused by changing the batch number and ensure the personal safety of the operators, the present invention proposes to engrave the required code on a rotatable rotor, and the rotation of the rotor realizes the change of the code. The rotation of the rotor is realized by pushing the pawl, and the reciprocating motion of the pawl realizes the rotation of the rotor. The reciprocating motion of the pawl is realized by the drive cylinder. In this way, the change of the code representing the batch number can be realized by controlling the drive cylinder externally through a power source. There is no need to separate the upper and lower molds like the traditional method, and the operator needs an operating space for replacement. In other words, there is no need to be on the production line or open the mold. The batch mark of the mold stamping part can be quickly changed on the outside of the mold, which increases production efficiency and employee work safety.

[0038] like Figures 1 to 3 As shown, a marking device 100 for marking batch numbers on workpieces provided by an embodiment of the present invention is shown. The marking device 100 includes a ratchet and pawl mechanism 110, a base 120 and a driving mechanism 130.

[0039] The ratchet and pawl mechanism 110 includes a character wheel 111, a ratchet wheel 112 and a pawl 113. The character wheel 111 and the ratchet wheel 112 are fixedly connected and rotatably supported on the base 120 through a rotating shaft (not shown in the figure). In other words, the character wheel 111 and the ratchet wheel 112, which are fixedly connected to each other, are supported on the base 120 through the rotating shaft and can rotate around the rotating shaft. The character wheel 111 and the ratchet wheel 112 can be configured as an integrated structure, for example.

[0040] A plurality of different character codes M for representing the batch number are evenly spaced on the outer circumference of the character wheel 111. In some embodiments, the character codes can be integers from 0 to 9, or the character codes can be single letters. Figures 1 to 4 In the illustrated embodiment, numbers from 0 to 9 are uniformly engraved on the outer circumference of each character wheel 111 .

[0041] The pawl 113 is used to push the ratchet wheel 112 to rotate together with the character wheel 111 to change the batch number. In the embodiment of the present invention, the batch number is represented by the character code at the mark position P on the character wheel. When the character wheel rotates, the character code at the mark position P of the character wheel changes, so the batch number also changes.

[0042] The driving mechanism 130 includes a driving cylinder 131 and a fluid power source 132. The driving cylinder 131 is connected to the pawl 113 and is used to drive the pawl 113 to reciprocate. The fluid power source 132 is connected to the driving cylinder 131 through a pipeline 133 and can provide power to the driving cylinder 131 through the pipeline 133 so that the driving cylinder drives the pawl to reciprocate.

[0043] Therefore, for example, when the batch number needs to be changed, when the fluid power source 132 provides power to the drive cylinder 131 through the pipeline 133, the drive cylinder 131 drives the pawl 113 to move in the first direction, thereby pushing the ratchet 112 and the character wheel 111 to rotate at least one character interval, thereby changing the character at the marking position P. When the pipeline 133 is disconnected, that is, the power provided by the fluid power source 132 to the drive cylinder 131 is canceled, the pawl 113 moves in the second direction opposite to the first direction, at which time the pawl 113 does not drive the ratchet 112 and the character wheel 111 to rotate, that is, when the pawl 113 moves in the second direction, the ratchet 112 and the character wheel 111 remain stationary.

[0044] It can be understood that a plurality of tooth grooves 114 are evenly arranged along the outer circumference of the ratchet wheel 112, and the number of tooth grooves on the outer circumference of the ratchet wheel 112 corresponds to the number of characters on the outer circumference of the character wheel 111. When the driving cylinder 131 drives the pawl 113 to move along the first direction, the pawl 113 is inserted into the corresponding tooth groove 114 to push the ratchet wheel 112 and the character wheel 111 to rotate.

[0045] In addition, the driving mechanism 130 may further include a transmission part 134 and a guide part 135. The driving cylinder 131 is connected to the pawl 113 through the transmission part 134. The transmission part 134 is configured to reciprocate in the guide part 135 under the drive of the driving cylinder 131, thereby driving the pawl 113 to reciprocate.

[0046] Furthermore, if Figure 4As shown, a movable piston 136 and a driving rod 137 connected to the piston are provided in the driving cylinder 131, and the driving rod is connected to the transmission part 134 by a threaded manner. In addition, a return spring 138 is also provided in the driving cylinder 130, and the return spring is configured to return the piston to and maintain the initial position when there is no power in the driving cylinder. That is to say, when the fluid power source 132 provides power to the driving cylinder 131 through the pipeline 133, the piston 136 overcomes the elastic force of the return spring 138 and moves downward (Z2 direction) in the inner cavity 139 of the driving cylinder 131, and then drives the transmission part 134 to move downward through the driving rod 137, thereby driving the pawl 113 to move along the first direction. When the power provided by the fluid power source 132 to the drive cylinder 131 is withdrawn, the piston 136 moves upward (Z1 direction) in the inner cavity 139 of the drive cylinder 131 under the elastic force of the return spring 138, and then drives the transmission part 134 to move upward through the drive rod 137, thereby driving the pawl 113 to move in a second direction opposite to the first direction.

[0047] exist Figures 1 to 4 In the illustrated embodiment, the transmission part 134 is configured as a transmission block 134, and the guide part 135 has a plurality of guide blocks 1351, 1352. The inner side surfaces S1 and S2 of the plurality of guide blocks form guide surfaces. Under the drive of the drive mechanism 130, the transmission block 134 moves in a guide track defined by the inner side surfaces S1 and S2 of the guide blocks 1351, 1352. A hole (not shown) that is matched and connected with the drive rod 137 is provided in the upper part of the transmission block, and a recess 1341 for mounting the pawl 113 is provided in the lower part of the transmission block.

[0048] In some embodiments, the drive cylinder 131 may be a pneumatic cylinder, and the fluid power source 132 may be an air source. Preferably, the drive cylinder 131 may be a single-acting pneumatic cylinder. Therefore, the operator only needs to plug in the air pressure source once before production to change the batch number. In addition, the batch number can be changed without taking up production time or opening the mold, that is, the batch number can be changed when the mold is closed.

[0049] Alternatively, the drive cylinder body may also be a hydraulic cylinder, in which case the fluid power source 132 is correspondingly a hydraulic source. Preferably, the drive cylinder body 131 may be a single-acting hydraulic cylinder.

[0050] In addition, if Figure 4As shown, a switch valve 1331 for connecting or disconnecting the pipeline 133 may be provided in the pipeline 133. Thus, the operator can simply operate the switch valve to realize the connection and disconnection of the pipeline in order to change the batch number. Further, in this case, the marking device 100 may also include a controller (not shown), which is electrically connected to the switch valve 1331 and is configured to control the connection or disconnection of the pipeline 133 through the switch valve 1331. Thus, manual operation can be further reduced. For example, an event that triggers the change of the batch number can be pre-stored in the controller, and when the event occurs, the switch valve action is triggered by the controller. For example, the operator can trigger the switch valve action through a physical button, or the operator can trigger the switch valve action by operating a virtual button on a display screen connected to the controller.

[0051] In addition, if Figure 4 As shown, a pressure reducing valve 1332 may also be provided in the pipeline 133 to provide a pressure suitable for the driving cylinder 131 .

[0052] In some embodiments, the ratchet pawl mechanism 110 may include a plurality of character wheels 111 and a plurality of ratchets 112, and the number of character wheels 111 and ratchets 112 is the same. Each character wheel 111 is fixedly connected to a corresponding ratchet 112 and is rotatably supported on the base 120 through a rotating shaft. A plurality of different character codes M are evenly spaced on the outer periphery of each character wheel 111, wherein the batch number is composed of a character code on each character wheel, or in other words, is composed of a character code at a marking position P on each character wheel. Accordingly, the pawl 113 may include a plurality of shift forks, the number of which is the same as the number of ratchets, and each shift fork is used to push a corresponding ratchet together with the character wheel fixedly connected to the ratchet to rotate.

[0053] In a specific embodiment, Figures 1 to 4 As shown, the ratchet and pawl mechanism 110 includes a first character wheel 1111, a second character wheel 1112, a first ratchet wheel 1121 and a second ratchet wheel 1122. Figure 5As shown, the pawl 113 may include a first fork 1131 and a second fork 1132. The first character wheel 1111 and the first ratchet 1121 are fixedly connected and rotatably supported on the base 120 through a rotating shaft. A plurality of different first character codes M1 are evenly spaced on the outer periphery of the first character wheel 111. The first fork 1131 is used to push the first ratchet 1121 to rotate together with the first character wheel 1111. The second character wheel 1112 and the second ratchet 1122 are fixedly connected and rotatably supported on the base 120 through a rotating shaft. A plurality of different second character codes M2 are evenly spaced on the outer periphery of the second character wheel 1112. The second fork 1132 is used to push the second ratchet 1122 to rotate together with the second character wheel 1112. The batch number is composed of a first code M1 and a second code M2, more specifically, the batch number is composed of the first code M1 at the marking position P1 of the first character wheel 1111 and the second code M2 ​​at the marking position P2 of the second character wheel 1112. Further, in this embodiment, the pawl 113 is constructed so that, under the drive of the driving mechanism 130, after the first fork 1131 pushes the first ratchet 1121 together with the first character wheel 1111 to rotate by multiple intervals of the first code, the second fork 1132 pushes the second ratchet 1122 together with the second character wheel 1112 to rotate by at least one interval of the second code, that is, the ratchet and pawl mechanism 110 has the function of automatic carry.

[0054] Taking the example that the first code M1 and the second code M2 ​​are both numbers from 0 to 9, ten codes from 0 to 9 are evenly engraved on the circumference of the first character wheel 1111 and the second character wheel 1112. In the initial state, the codes at the marking positions P1 and P2 of the first character wheel 1111 and the second character wheel 1112 are both 0. When the batch number needs to be changed, the driving mechanism 130 is turned on, and the driving mechanism 130 drives the pawl 113 to reciprocate. Each reciprocating movement of the first fork 1131 of the pawl 113 drives the first ratchet 1121 and the first character wheel 1111 to rotate by an interval of one character code, and the character code at the mark position P1 of the first character wheel 1111 changes from 0 to 1, from 1 to 2... from 8 to 9 in sequence; before the character code at the mark position P1 of the first character wheel 1111 changes to 9, the second fork 1132 will not drive the second ratchet 1121 to rotate, that is, the second ratchet 1121 remains stationary; at this time, the batch numbers are 00, 01, 02, 03, 04, 05, 06, 07, 08, and 09 in sequence. When the code at the marking position P1 of the first character wheel 1111 is 9 and the batch number needs to be changed again, the driving mechanism 130 is turned on, and the driving mechanism 130 drives the pawl 113 to reciprocate once, and the first fork 1131 of the pawl 113 drives the first ratchet 1121 and the first character wheel 1111 to rotate by the interval of one code, and the code at the marking position P1 of the first character wheel 1111 changes from 9 to 0 again, and at the same time, the second fork 1132 of the pawl 113 pushes the second ratchet 1122 and the second character wheel 1112 to rotate by the interval of one code, and the code at the marking position P2 of the second character wheel 1112 changes from 0 to 1, and the batch number is 10 at this time. When the code at the marking position P1 of the first character wheel 1111 changes from 9 to 0 again, the code at the marking position P2 of the second character wheel 1112 changes from 1 to 2, and this is repeated. That is, the first shift fork 1131 pushes the first character wheel 1111 to rotate one circle, and the second shift fork 1132 pushes the second character wheel 1112 to rotate one character interval.

[0055] In other words, each time the driving mechanism 130 drives the pawl 113 once, the first fork 1131 of the pawl 113 pushes the first ratchet 1121 together with the first character wheel 1111 to rotate by one character interval, until the first character wheel 1111 rotates a predetermined number of character intervals (for example, after the first character wheel 1111 rotates one circle), when the driving mechanism 130 drives the pawl 113 again, the first fork 1131 of the pawl 113 pushes the first ratchet 1121 together with the first character wheel 1111 to rotate by one character interval and at the same time, the second fork 1132 of the pawl 113 pushes the second ratchet 1122 together with the second character wheel 1112 to rotate by one character interval.

[0056] Here, it is possible that the outer contours of the first ratchet 1121 and the second ratchet 1122 are also different, in particular, the diameter of the tooth top circle of the first ratchet 1121 is generally larger than the diameter of the tooth top circle of the second ratchet 1122; at the same time, the outer contour of the first ratchet 1121 at the mark position P1 of the first character wheel 1111 where the code changes from 9 to 0 is different from the outer contours of the first ratchet 1121 at other code positions, in particular, the tooth groove is designed to be deeper. Therefore, when the code at the mark position P1 of the first character wheel 1111 changes from 0 to 1, from 1 to 2... from 8 to 9 in sequence, the first fork 1131 of the pawl 113 acts on the ratchet, and the second fork 1132 does not contact the second ratchet 1122, so the second character wheel 1112 does not rotate. Only when the code of the first character wheel 1111 changes from 9 to 0, the second fork 1132 contacts and pushes the second ratchet 1122 together with the second character wheel 1112. To this end, the first shift fork 1131 and the second shift fork 1132 of the pawl 113 may also have different outer contours to achieve an accurate shifting process.

[0057] Alternatively, it is also possible to set the first character wheel 1111 and the second character wheel 1112 in linkage, that is, to set a carry mechanism between the first character wheel 1111 and the second character wheel 1112, so that the first character wheel 1111 rotates one circle together with the first ratchet 1121 before the second character wheel 1112 rotates one character interval. For this purpose, it is conceivable to set a linkage carry mechanism, such as a carry tooth and a carry groove, on the side adjacent to each other of the first character wheel 1111 and the second character wheel 1112. Thus, when the character code at the mark position P1 of the first character wheel 1111 changes from 9 to 0 again, the character code at the mark position P2 of the second character wheel 1112 changes.

[0058] Similarly, a ratchet and pawl mechanism with more character wheels and more ratchet wheels can be designed according to the above-mentioned arrangement structure and working principle.

[0059] In some embodiments, the marking device 100 may further include a counter 140. The counter 140 includes at least one additional rotatable character wheel 141, for example, five rotatable character wheels 141, and a plurality of different numbers are evenly spaced and arranged on the outer circumference of the additional rotatable character wheel 141. It can be understood that the counter 140 can also be constructed with reference to the above-mentioned ratchet and pawl mechanism with automatic carry function, which will not be described in detail here.

[0060] Furthermore, the count value of the counter 140 can be used as a signal to change the batch number. For example, the controller is electrically connected to the drive mechanism 130 and the counter 140. When the count value of the counter 140 reaches a preset threshold, the controller sends a control signal to the drive mechanism 130, and the drive mechanism 130 drives the ratchet pawl mechanism to change the batch number.

[0061] In some embodiments, the marking device 100 may have dimensions of no more than 10 cm x 5 cm x 10 cm. This enables a quick and safe change of the batch number while obtaining a compact marking device.

[0062] like Figure 6 As shown, a schematic block diagram of a stamping device 1000 provided by an embodiment of the present invention is shown. The stamping device 1000 is used to manufacture stamping parts, especially to manufacture metal stamping parts.

[0063] The stamping equipment 1000 includes a stamping die 200 and at least one marking device 100 as described above. The stamping die 200 is used to stamp a workpiece to be manufactured (not shown). The marking device 100 is configured to mark the batch number of the workpiece 300 to be manufactured when the stamping die 200 stamps the workpiece to be manufactured. Thus, when it is necessary to change the character code at the marking position, the operator can simply and quickly control the driving mechanism to drive the pawl to reciprocate, thereby causing the pawl to push the ratchet wheel to drive the character wheel to rotate, without having to laboriously turn the individual character wheels of the marking device by hand.

[0064] In some embodiments, at least a portion of the components of the marking device 100 are installed outside the stamping die 200 or outside the stamping die 200. For example, when a switch valve 1331 for connecting or disconnecting the pipeline 133 is provided on the pipeline 133 of the driving mechanism 130 of the marking device 100, the switch valve 1331 can be arranged outside the stamping die 200, for example, in the outer wall, while the ratchet pawl mechanism 110, the base 120 and the driving cylinder 131 of the driving mechanism 130 of the marking device 100 and a portion of the pipeline 133 are arranged inside the stamping die, such as Figure 6 As shown. Thus, the operator can realize the rapid and automatic replacement of the batch number by controlling the switch valve 1331 outside the mold, without entering the mold for manual replacement, thereby improving safety. In particular, the marking device 100 according to the present invention can be used to modify the original stamping mold with a manual marking device without providing additional accommodation space on the stamping mold for this purpose. Thus, the production process of the original stamping mold can be improved, the time for manual replacement of the code can be saved, and the production efficiency can be improved.

[0065] In some embodiments, the fluid power source 132 of the driving mechanism 130 of the marking device 100 can also be disposed on the outside of the stamping die 200, for example, in the outer wall (e.g. Figure 6 as shown), or installed outside the stamping die 200.

[0066] In some embodiments, Figure 6As shown, the stamping die 200 includes a driving device (not shown) and an upper die 210 and a lower die 220 that can move relative to each other to stamp the workpiece to be manufactured under the drive of the driving device. At this time, the ratchet pawl mechanism 110, the base 120 and the driving cylinder 131 of the driving mechanism 130 of the marking device 100 and a part of the pipeline 133 can be arranged inside the upper die 210, and the switch valve 1331 and / or the fluid power source 132 provided in the pipeline 133 of the marking device 100 can be arranged in the groove 211 of the outer wall of the upper die 210.

[0067] In some embodiments, the marking device 100 has a counter 140, which includes at least one additional rotatable character wheel 141, and a plurality of different numbers are evenly spaced on the outer circumference of the additional rotatable character wheel 141. The counter 140 is configured to be linked with the relative movement of the upper die 210 and the lower die 220, so that the character wheel 141 rotates when the upper die 210 and the lower die 220 move relative to each other to punch the workpiece to be manufactured, thereby realizing counting. In other words, when the driving device of the stamping equipment 1000 drives the upper die 210 and the lower die 220 to move relative to each other to punch a workpiece, the counter 140 counts once. Here, the marking device 100 realizes the character code changes that can be driven separately in two sets of character code systems through different power without interfering with each other.

[0068] Other embodiments and advantages of the stamping device 1000 can be referred to in conjunction with the above Figures 1 to 5 The description of various embodiments of the marking device 100 will not be repeated here.

[0069] The features or feature combinations mentioned in the specification, drawings and claims above, as long as they are meaningful within the scope of the present invention and do not contradict each other, can be used in any combination or alone. The advantages and features described for the marking device provided in the embodiment of the present invention are applicable to the stamping device provided in the embodiment of the present invention in a corresponding manner, and vice versa.

[0070] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A marking device for marking a batch number and a count value on a workpiece in a stamping device including a stamping die, It is characterized in that The marking device is configured to realize automatic batch number marking and automatic counter marking on the workpiece to be manufactured when the stamping die stamps the workpiece to be manufactured, and the marking device comprises a ratchet pawl mechanism, a base and a driving mechanism; The ratchet and pawl mechanism comprises a character wheel, a ratchet wheel and a pawl, wherein the character wheel and the ratchet wheel are fixedly connected and rotatably supported on the base through a rotating shaft, and a plurality of different character codes for representing the batch number are evenly spaced on the outer circumference of the character wheel, and the pawl is used to push the ratchet wheel to rotate together with the character wheel to change the batch number; Wherein, the driving mechanism includes a driving cylinder and a fluid power source, the driving cylinder is connected to the pawl, the fluid power source is connected to the driving cylinder through a pipeline and can provide power to the driving cylinder through the pipeline, so that the driving cylinder drives the pawl to reciprocate, thereby realizing automatic batch number marking, the driving mechanism also includes a transmission part and a guide part, the transmission part is configured to connect the driving cylinder with the pawl, and the transmission part is configured to be guided to reciprocate in the guide part under the drive of the driving cylinder, thereby driving the pawl to reciprocate, a movable piston and a driving rod connected to the piston are provided in the driving cylinder, the driving rod is connected to the transmission part by a threaded manner, a plurality of tooth grooves are evenly provided along the outer periphery of the ratchet wheel, and the number of tooth grooves on the outer periphery of the ratchet wheel corresponds to the number of character codes on the outer periphery of the character wheel, The marking device also has a counter, which includes at least one other rotatable character wheel, on the outer circumference of which a plurality of different numbers are evenly spaced apart. The counter is constructed to be linked with the relative movement of the upper die and the lower die of the stamping die, so that the other rotatable character wheel rotates to change the count value when the upper die and the lower die move relative to each other to stamp the workpiece to be manufactured, thereby realizing automatic counter marking.

2. The marking device according to claim 1, It is characterized in that The driving cylinder body is a gas cylinder, and the fluid power source is a gas pressure source.

3. The marking device according to claim 2, It is characterized in that The cylinder is a single-acting cylinder.

4. The marking device according to claim 1, It is characterized in that The driving cylinder body is a hydraulic cylinder, and the fluid power source is a hydraulic source.

5. The marking device according to claim 4, It is characterized in that The hydraulic cylinder is a single-acting hydraulic cylinder.

6. The marking device according to any one of claims 1 to 5, It is characterized in that A switch valve for connecting or disconnecting the pipeline is arranged in the pipeline.

7. The marking device according to claim 6, It is characterized in that The marking device further includes a controller, which is electrically connected to the switch valve and configured to control the connection or disconnection of the pipeline through the switch valve.

8. The marking device according to any one of claims 1 to 5, It is characterized in that The ratchet and pawl mechanism comprises a plurality of character wheels and a plurality of ratchet wheels, wherein the number of the character wheels and the ratchet wheels is the same, wherein each character wheel is fixedly connected to a corresponding ratchet wheel and is rotatably supported on the base through the rotating shaft, and a plurality of different character codes are evenly spaced on the outer circumference of each character wheel, wherein the batch number is composed of a character code on each character wheel; The pawl includes a plurality of shift forks, the number of which is the same as the number of the ratchet wheels, and each shift fork is used to push a corresponding ratchet wheel and a character wheel fixedly connected to the ratchet wheel to rotate.

9. The marking device according to claim 8, It is characterized in that The ratchet and pawl mechanism comprises a first character wheel, a second character wheel, a first ratchet wheel and a second ratchet wheel, and the pawl comprises a first shift fork and a second shift fork; The first character wheel and the first ratchet wheel are fixedly connected and rotatably supported on the base through the rotating shaft. A plurality of different first character codes are evenly spaced on the outer circumference of the first character wheel. The first shift fork is used to push the first ratchet wheel to rotate together with the first character wheel. The second character wheel and the second ratchet wheel are fixedly connected and rotatably supported on the base through the rotating shaft. A plurality of different second character codes are evenly spaced on the outer circumference of the second character wheel. The second shift fork is used to push the second ratchet wheel to rotate together with the second character wheel. The pawl is configured so that, under the drive of the driving mechanism, after the first shift fork pushes the first ratchet wheel together with the first word wheel to rotate by a plurality of first word code intervals, the second shift fork pushes the second ratchet wheel together with the second word wheel to rotate by a second word code interval; The batch number consists of a first character code and a second character code.

10. The marking device according to any one of claims 1 to 5, It is characterized in that The character codes are integers from 0 to 9, or the character codes are single letters.

11. The marking device according to any one of claims 1 to 5, It is characterized in that The marking device has dimensions not exceeding 10 cm x 5 cm x 10 cm.

12. A stamping device for manufacturing stamped parts, It is characterized in that The stamping equipment comprises: Stamping dies, used for stamping the workpiece to be manufactured; At least one marking device, which is constructed as a marking device according to any one of claims 1 to 11 and is constructed to realize automatic batch number marking and automatic counter marking on the workpiece to be manufactured when the stamping die stamps the workpiece to be manufactured.

13. The punching device according to claim 12, It is characterized in that A switch valve for connecting or disconnecting the pipeline is provided in the pipeline of the driving mechanism of the at least one marking device, and the switch valve is arranged outside the stamping die; and / or The fluid power source of the driving mechanism of the at least one marking device is arranged outside the stamping die.

14. A stamping device according to claim 12 or 13, It is characterized in that The punching machine is designed to produce metal punched parts.

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