阅读说明：本技术 用于给工件标记批次号的标记装置以及冲压设备 (Marking device for marking batch number of workpiece and punching equipment ) 是由 郭迎亮 乔跃 赵昆龙 于 2020-06-01 设计创作，主要内容包括：本发明涉及一种给工件标记批次号的标记装置和一种具有该标记装置的冲压设备。该标记装置包括棘轮棘爪机构、基座和驱动机构。棘轮棘爪机构包括字轮、棘轮和棘爪,字轮和棘轮固定连接并且可转动地通过转动轴支承在基座上,在字轮的外周上均匀地间隔布置有多个不同的用于表征批次号的字码,棘爪用于推动棘轮连同字轮转动,以改变所述批次号。驱动机构包括驱动缸体和流体动力源,流体动力源通过管路与驱动缸体连接并且能通过管路为驱动缸体提供动力,以便驱动缸体驱动棘爪往复运动。通过本发明一方面能够实现通过操作人员更加符合人体工程学地且更安全地更改批次号,另一方面还能够在不打开模具的情况下实现快速更改批次号,提高生产效率。(The present invention relates to a marking device for marking a lot number to a workpiece and a punching apparatus having the marking device. The marking device includes a ratchet-pawl mechanism, a base, and a drive mechanism. The ratchet-pawl mechanism comprises a print wheel, a ratchet wheel and a pawl, the print wheel and the ratchet wheel are fixedly connected and rotatably supported on the base through a rotating shaft, a plurality of different print codes for representing batch numbers are uniformly arranged on the periphery of the print wheel at intervals, and the pawl is used for pushing the ratchet wheel to rotate together with the print wheel so as to change the batch numbers. The driving mechanism comprises a driving cylinder body and a fluid power source, wherein the fluid power source is connected with the driving cylinder body through a pipeline and can provide power for the driving cylinder body through the pipeline so as to drive the cylinder body to drive the pawl to reciprocate. According to the invention, on one hand, the batch number can be changed more ergonomically and more safely by an operator, and on the other hand, the batch number can be changed rapidly without opening a die, so that the production efficiency is improved.)

1. A marking device for marking lot numbers on workpieces, the marking device comprising a ratchet and pawl mechanism, a base, and a drive mechanism;

wherein the ratchet-pawl mechanism comprises a print wheel, a ratchet wheel and a pawl, the print wheel and the ratchet wheel are fixedly connected and rotatably supported on the base through a rotating shaft, a plurality of different print codes for representing batch numbers are uniformly arranged on the periphery of the print wheel at intervals, and the pawl is used for pushing the ratchet wheel to rotate together with the print wheel so as to change the batch numbers;

the driving mechanism comprises a driving cylinder and a fluid power source, the driving cylinder is connected with the pawl, and the fluid power source is connected with the driving cylinder through a pipeline and can provide power for the driving cylinder through the pipeline, so that the driving cylinder drives the pawl to reciprocate.

2. Marking device according to claim 1, characterized in that the drive cylinder is a pneumatic cylinder, in particular a single-acting pneumatic cylinder, and the fluid power source is a pneumatic source.

3. Marking device according to claim 1, characterized in that the drive cylinder is a hydraulic cylinder, in particular a single-acting hydraulic cylinder, and the fluid power source is a hydraulic source.

4. The marking device according to any one of claims 1 to 3, wherein the drive mechanism further comprises a transmission portion and a guide portion, the transmission portion being configured to connect the drive cylinder with the pawl, and the transmission portion being configured to be guided to reciprocate in the guide portion by the drive of the drive cylinder, thereby driving the pawl to reciprocate.

5. A marking device according to claim 4, wherein a displaceable piston and a drive rod connected to the piston are provided in the drive cylinder, the drive rod being connected to the transmission by means of a screw thread.

6. A marking device according to any one of claims 1 to 5, wherein a switch valve for switching on or off said conduit is provided in said conduit.

7. The marking device of claim 6, further comprising a controller electrically connected to said switching valve and configured to control the connection or disconnection of said conduit via said switching valve.

8. A marking device as defined in any one of claims 1 to 7 wherein said ratchet-pawl mechanism comprises a plurality of print wheels and a plurality of ratchet wheels, said print wheels and said ratchet wheels being of equal number, wherein each print wheel is fixedly connected to a respective one of said ratchet wheels and rotatably supported on said base by said rotatable shaft, a plurality of different print codes being evenly spaced around the periphery of each print wheel, wherein said batch number consists of one print code on each print wheel;

the pawl comprises a plurality of shifting forks, the number of the shifting forks is the same as that of the ratchet wheels, and each shifting fork is used for pushing a corresponding ratchet wheel to rotate together with a print wheel fixedly connected with the ratchet wheel.

9. The marking device of claim 8, wherein the ratchet-and-pawl mechanism includes a first print wheel, a second print wheel, a first ratchet wheel, and a second ratchet wheel, and the pawl includes a first fork and a second fork;

the first print wheel and the first ratchet wheel are fixedly connected and rotatably supported on the base through the rotating shaft, a plurality of different first print codes are uniformly arranged on the periphery of the first print wheel at intervals, and the first shifting fork is used for pushing the first ratchet wheel to rotate together with the first print wheel;

the second print wheel and the second ratchet wheel are fixedly connected and rotatably supported on the base through the rotating shaft, a plurality of different second print codes are uniformly arranged on the periphery of the second print wheel at intervals, and the second shifting fork is used for pushing the second ratchet wheel to rotate together with the second print wheel;

the pawl is configured such that, upon driving of the drive mechanism, the second fork pushes the second ratchet wheel to rotate with the second print wheel by one interval of a second print after each push of the first fork with the first print wheel by a plurality of intervals of a first print;

wherein the batch number is composed of a first character code and a second character code.

10. A marking device as claimed in any one of claims 1 to 9, wherein said code words are each integers of 0 to 9 or said code words are each individual letters.

11. A marking device as claimed in any one of claims 1 to 10, wherein the marking device further comprises a counter, the counter comprising at least one further rotatable print wheel, a plurality of different numbers being evenly spaced around the periphery of the further rotatable print wheel.

12. A marking device as claimed in any one of claims 1 to 11, wherein said marking device has dimensions of no more than 10 cm x 5 cm x 10 cm.

13. A stamping apparatus for manufacturing stampings, the stamping apparatus comprising:

the stamping die is used for stamping a workpiece to be manufactured;

at least one marking device configured as a marking device according to any one of the preceding claims and configured for marking a batch number thereof on the workpiece to be manufactured when the workpiece to be manufactured is punched by the punching die.

14. A press apparatus according to claim 13, wherein a switching valve for switching on or off the line is provided in the line of the drive mechanism of the at least one marking device, the switching valve being arranged outside the press die; and/or

The fluid power source of the driving mechanism of the at least one marking device is arranged outside the stamping die.

15. A stamping apparatus as claimed in claim 13 or 14, wherein the marking device further comprises a counter comprising at least one further rotatable print wheel having a plurality of different numbers evenly spaced around its periphery;

the punching die comprises an upper die and a lower die which can move relative to each other, and the counter is configured 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 relatively to punch a workpiece to be manufactured, thereby realizing counting.

16. Stamping apparatus as claimed in any of claims 13 to 15, wherein the stamping apparatus is configured for producing metal stampings.

Technical Field

The invention relates to the field of manufacturing of stamping parts, in particular to the field of manufacturing of automobile body stamping parts. The present invention relates specifically to a marking device for marking a lot number to a workpiece and a punching apparatus having the marking device.

Background

With the market demand, the motorcycle type is constantly updated, and output is constantly increased, and the punching press is the first process of four big technologies, and the high quality of car begins from the punching press. Therefore, the quality requirements for stamped parts in the vehicle sector are becoming increasingly stringent. In the daily production process of a stamping workshop, the replacement of the batch number of each production batch is a necessary process for tracing the quality of parts and is also a very important link.

In the field of punching equipment, a marking device for marking a lot number to a workpiece when the workpiece is punched by a die is generally installed in the die. The marking device has at least one rotatable print wheel, on the periphery of which a plurality of different code words, usually numbers, are engraved uniformly. By rotating each character wheel, the character code at the marking position can be changed, and further the batch number can be changed.

In the general case, the batch number needs to be changed every time an order is produced in a stamping workshop, however, because the marking device is installed in the die, two methods are generally used for changing the mark, one method is to change the mark on line in the time occupying the stamping production line, the other method is to separate the upper die from the lower die by using equipment such as a crown block on line and manually adjust the batch, the two methods cause great waste in the flow of the whole production process, in the first case, the operator enters the production line to adjust the batch mark each time the production line is stopped, the time is required to be about 3 minutes, the maximum linear speed of the stamping production line is calculated according to 17 minutes, the productivity of each order is lost by 51 strokes, in the second case, the site specially equipped with the crown block is required to be changed, the time required to open the die, adjust the batch and close the die is calculated, and a person for mastering the skills of the crown block and the batch change is required to be 20 to 30 minutes each time on average, in both cases, the upper and lower dies need to be separated, and enough safety space for an operator to enter the dies needs to be ensured, so that when the batch number needs to be changed by manually operating the marking device, the operator needs to manually shift each character wheel of the marking device in the dies to change the batch number.

Disclosure of Invention

It is therefore an object of the present invention to provide a marking device for marking a batch number on a workpiece and a punching apparatus having the marking device, which on the one hand enable a more ergonomic and safer change of the batch number by an operator and on the other hand enable a rapid change of the batch number without opening the die of the punching apparatus, increasing the production efficiency.

A first aspect of the invention is directed to a marking device for marking lot numbers on workpieces, the marking device including a ratchet-pawl mechanism, a base, and a drive mechanism. The ratchet-pawl mechanism comprises a print wheel, a ratchet wheel and a pawl, the print wheel and the ratchet wheel are fixedly connected and rotatably supported on the base through a rotating shaft, a plurality of different print codes for representing batch numbers are uniformly arranged on the periphery of the print wheel at intervals, and the pawl is used for pushing the ratchet wheel to rotate together with the print wheel so as to change the batch numbers. The driving mechanism comprises a driving cylinder body and a fluid power source, the driving cylinder body is connected with the pawl, the fluid power source is connected with the driving cylinder body through a pipeline and can provide power for the driving cylinder body through the pipeline, and therefore the driving cylinder body drives the pawl to reciprocate.

Therefore, according to the marking device of the first aspect of the present invention, the desired respective character codes are uniformly engraved on the outer periphery of the rotatable character wheel, and the change of the character codes at the marking position is effected by the rotation of the character wheel. The rotation of the print wheel is realized by the rotation of a ratchet wheel fixedly connected with the print wheel. The rotation of the ratchet wheel is realized by the pushing of the pawl. The reciprocating motion of the pawl effects rotation of the ratchet wheel along with the print wheel, and the reciprocating motion of the pawl is effected by a drive mechanism comprising a drive cylinder and a fluid power source. When a batch number needs to be changed, namely, when the code positioned at the marking position needs to be changed, an operator can switch on the pipeline between the fluid power source and the driving cylinder body by controlling the fluid power source, so that the fluid power source provides power for driving the pawl to move for the driving cylinder body through the pipeline, the pawl pushes the ratchet wheel to drive the character wheels to rotate, and the operator does not need to vigorously stir each character wheel of the marking device by hands. Particularly, when the control of the driving mechanism of the marking device is arranged outside the stamping equipment or outside the die of the stamping equipment, an operator only needs to control the on-off of the pipeline between the fluid power source and the driving cylinder outside the stamping equipment or outside the die, so that the batch number can be quickly and automatically replaced, and the upper die and the lower die do not need to be separated firstly and then enter the die for manual replacement like the traditional method.

In one embodiment of the first aspect of the present invention, the drive cylinder may be a pneumatic cylinder and the fluid power source may be a pneumatic pressure source. Preferably, the drive cylinder may be a single-acting cylinder. Conventional press lines are typically provided with a source of air pressure. The marking device according to the invention thus allows the operator to change a batch number by simply inserting an air pressure source once before production, without the aid of a specially provided power source. Furthermore, the change of the lot number can also be done without taking up production time or without opening the mold, i.e. the change of the lot number can be achieved in the mold closed state.

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

In one embodiment of the first aspect of the present invention, the driving mechanism may further include a transmission portion configured to connect the driving cylinder with the pawl, and a guide portion configured to be guided to reciprocate in the guide portion by the driving of the driving cylinder, thereby driving the pawl to reciprocate.

Further, a movable piston and a driving rod connected with the piston can be arranged in the driving cylinder body, and the driving rod is connected with the transmission part in a threaded mode.

In one embodiment of the first aspect of the present invention, a switching valve for switching the line on or off may be provided in the line. Therefore, an operator can simply realize the on-off of the pipeline by operating the switch valve so as to change the batch number without manually rotating the character wheel.

Further, the marking device may further include a controller electrically connected to the switching valve and configured to control the connection or disconnection of the line by the switching valve. Thereby enabling further reduction in manual operations.

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 ratchet wheels, the number of the character wheels and the number of the ratchet wheels being the same, wherein each of the character wheels is fixedly connected to a corresponding one of the ratchet wheels and rotatably supported on the base via the rotating shaft, and a plurality of different character codes are arranged at regular intervals on an outer periphery of each of the character wheels, wherein the lot number is composed of one character code on each of the character wheels. Accordingly, the pawl may include a plurality of forks, the number of which is the same as that of the ratchet wheels, each fork being adapted to push a corresponding one of the ratchet wheels to rotate together with the print wheel fixedly connected to the ratchet wheel. This enables a lot number having a large number to be changed simply and safely.

In one embodiment of the first aspect of the present invention, the ratchet-pawl mechanism may comprise a first print wheel, a second print wheel, a first ratchet wheel and a second ratchet wheel, and the pawls may comprise a first fork and a second fork, respectively. The first print wheel and the first ratchet wheel are fixedly connected and rotatably supported on the base through the rotating shaft, a plurality of different first print codes are uniformly arranged on the periphery of the first print wheel at intervals, and the first shifting fork is used for pushing the first ratchet wheel to rotate together with the first print wheel. The second print wheel and the second ratchet wheel are fixedly connected and rotatably supported on the base through the rotating shaft, a plurality of different second print codes are uniformly arranged on the periphery of the second print wheel at intervals, and the second shifting fork is used for pushing the second ratchet wheel to rotate together with the second print wheel. Wherein the batch number is composed of a first character code and a second character code. A ratchet-pawl mechanism with more print wheels and more ratchet wheels can also be designed according to the above arrangement and principle of action.

Further, the pawl is configured such that, upon driving of the driving mechanism, the second fork pushes the second ratchet wheel to rotate with the second print wheel by one interval of the second print after every pushing of the first fork by the first ratchet wheel rotates with the first print by a plurality of intervals of the first print. The marking device according to the invention can thus be made more compact by driving a plurality of print wheels in rotation by means of the same drive mechanism.

In one embodiment of the first aspect of the present invention, the codewords may be integers from 0 to 9, respectively, or the codewords may be single letters, respectively.

In one embodiment of the first aspect of the invention, the marking device may further comprise a counter comprising at least one further rotatable print wheel, on the outer circumference of which a plurality of different numbers are arranged at regular intervals.

In one embodiment of the first aspect of the present invention, the marking means may have dimensions of no more than 10 cm x 5 cm x 10 cm.

A second aspect of the invention relates to a stamping device for producing a stamping part, comprising a stamping die for stamping a workpiece to be produced and at least one marking device which is designed as a marking device according to the first aspect of the invention and is designed for marking a batch number of the workpiece to be produced with the stamping die while stamping the workpiece to be produced. From this, when the word that is located mark position department is changed to needs, operating personnel can simply and fast through the pipeline switch-on between control fluid power source and the drive cylinder body for the fluid power source provides the power that drives the pawl motion for the drive cylinder body through the pipeline, and then makes the pawl promote the ratchet and drive the character wheel and rotate, need not operating personnel like traditional mode painstakingly stir each character wheel of mark device with the hand.

In one embodiment of the second aspect of the present invention, a switching valve for switching on or off the pipeline may be provided in the pipeline of the driving mechanism of the at least one marking device, and the switching valve may be disposed outside the press die; and/or the fluid power source of the drive mechanism of the at least one marking device may be arranged outside the stamping die. Therefore, an operator can realize quick and automatic replacement of the batch number only by controlling the on-off of the pipeline between the fluid power source and the driving cylinder body at the outer side of the mold without entering the mold for manual replacement.

In one embodiment of the second aspect of the invention, the marking device may further comprise a counter comprising at least one further rotatable print wheel, on the outer circumference of which a plurality of different numbers are arranged at regular intervals. The punching die comprises an upper die and a lower die which can move relative to each other, and the counter is configured 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 relatively to punch a workpiece to be manufactured, thereby realizing counting. The marking device according to the invention can thus be integrated with both an automatic batch number marking and an automatic counter marking. This allows fully automated marking in the production of stampings. And the marking device can realize the code change which can be respectively driven in two sets of code systems through different powers, and the code change does not interfere with each other. At the same time, the marking device according to the invention does not require a larger receiving space than the marking devices of the prior art and can therefore be used for retrofitting existing punching devices.

In one embodiment of the second aspect of the invention, the stamping device is designed for producing metal stampings.

Further embodiments and advantages of the stamping device according to the second aspect of the present invention may be found in the above description of the respective embodiments of the marking means according to the first aspect of the present invention and will not be described in detail here.

Drawings

Various embodiments of the present invention will be described in more detail below with reference to the attached drawing figures, wherein:

FIG. 1 is a schematic front view of a marking device provided in accordance with one embodiment of the present invention;

FIG. 2 is a schematic right side view of the marking device shown in FIG. 1;

FIG. 3 is a schematic bottom view of the marking device shown in FIG. 1;

FIG. 4 is a schematic block diagram of a drive mechanism provided in accordance with one embodiment of the present invention;

FIG. 5 is a schematic perspective view of a pawl provided in accordance with one embodiment of the present invention;

fig. 6 is a schematic block diagram of a punching apparatus according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Throughout the specification, unless otherwise specifically noted, terms used herein should be understood as having meanings as commonly used in the art. Accordingly, unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. If there is a conflict, the present specification will control.

It should be noted that, in the embodiments of the present invention, the terms "comprises", "comprising" or any other variation thereof are intended to cover a non-exclusive inclusion, so that a method or apparatus including a series of elements includes not only the explicitly recited elements but also other elements not explicitly listed or inherent to the method or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other related elements in a method or apparatus that comprises the element.

It should be noted that the terms "first \ second \ third" related to the embodiments of the present invention only distinguish similar objects, and do not represent a specific ordering for the objects, and it should be understood that "first \ second \ third" may exchange a specific order or sequence when allowed. It should be understood that the terms first, second, and third, as used herein, are interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in other sequences than those illustrated or otherwise described herein.

Generally, the space reserved for the marking device inside the die of the stamping machine is limited, and how to realize quick automatic batch number replacement in the limited space is a difficult problem faced by the stamping field. Especially, under the condition that the batch number has a plurality of numbers, the character wheels of the marking device are arranged side by side relatively and tightly, the interval between every two character wheels is very small, the time is consumed when the character wheels are shifted one by one, and the character wheels beside the character wheels are easily influenced when the current character wheels are shifted. In addition, the operator entering the interior of the mold to operate the marking device also has a safety hazard.

Therefore, in order to reduce the production time occupied by replacing batch numbers, waste of resources brought by replacing batch numbers and ensure the personal safety of operators, the invention provides that required characters are imprinted on a rotatable rotor, the rotation of the rotor realizes the change of the characters, the rotation of the rotor is realized by the pushing of a pawl, the reciprocating motion of the pawl realizes the rotation of the rotor, and the reciprocating motion of the pawl is realized by a driving cylinder body. Therefore, the change of the character codes of the characteristic batch numbers can be realized by externally controlling the driving cylinder body through the power source, the upper die and the lower die are separated without a traditional method, an operating space for an operator to replace is needed, namely, the die does not need to be opened on a production line, the batch marks of the die stamping parts can be rapidly changed outside the die, and the production efficiency and the working safety of workers are improved.

Referring to fig. 1 to 3, a marking apparatus 100 for marking a lot number on a workpiece according to an embodiment of the present invention is shown. The marking device 100 includes a ratchet-pawl mechanism 110, a base 120, and a drive mechanism 130.

Ratchet-pawl mechanism 110 includes a print 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). That is, the character wheel 111 and the ratchet wheel 112 fixedly connected to each other are supported on the base 120 through a rotation shaft and can rotate around the rotation shaft. The print wheel 111 and the ratchet wheel 112 may be formed as an integral structure, for example.

A plurality of different code words M for characterizing the batch number are arranged at regular intervals on the outer circumference of the print wheel 111. In some embodiments, the codewords may be integers from 0 to 9, respectively, or the codewords may be single letters, respectively. For example, in the embodiment shown in fig. 1 to 4, numerals of 0 to 9 are uniformly imprinted on the outer periphery of each character wheel 111.

The pawl 113 is used to urge the ratchet wheel 112 to rotate along with the print wheel 111 to change the lot number. In the embodiment of the present invention, the lot number is represented by a code word at the mark position P on the character wheel. When the character wheel rotates, the character code at the marking position P of the character wheel changes, and thus the batch number also changes.

The driving mechanism 130 includes a driving cylinder 131 and a fluid power source 132. The driving cylinder 131 is connected to the ratchet 113 and serves to drive the ratchet 113 to reciprocate. A fluid power source 132 is connected to the drive cylinder 131 through a line 133 and can power the drive cylinder 131 through the line 133 to drive the cylinder drive pawl in a reciprocating motion.

Thus, for example, when a lot number needs to be changed, the fluid power source 132 provides power to the drive cylinder 131 through the conduit 133, and the drive cylinder 131 drives the pawl 113 in a first direction to move the ratchet wheel 112 along with the print wheel 111 to rotate at least one code interval, thereby changing the code at the mark position P. When the conduit 133 is disconnected, i.e., the fluid power source 132 is removed from providing power to the drive cylinder 131, the pawl 113 moves in a second direction opposite the first direction, and the pawl 113 does not rotate the ratchet wheel 112 with the print wheel 111, i.e., the ratchet wheel 112 remains stationary with the print wheel 111 while the pawl 113 moves in the second direction.

It will be appreciated that a plurality of splines 114 are provided evenly along the outer periphery of the ratchet wheel 112, the number of splines on the outer periphery of the ratchet wheel 112 corresponding to the number of codewords on the outer periphery of the print wheel 111. When the driving cylinder 131 drives the pawls 113 to move in the first direction, the pawls 113 are caught in the corresponding teeth grooves 114 to rotate the ratchet wheel 112 together with the print wheel 111.

Further, 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 a transmission 134. The transmission section 134 is configured to be guided to reciprocate in the guide section 135 by the driving of the driving cylinder 131, thereby driving the pawl 113 to reciprocate.

Further, as shown in fig. 4, 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 threadedly connected to the transmission part 134. In addition, a return spring 138 is disposed within the drive cylinder 130 and is configured to return and hold the piston in the initial position in the absence of power within the drive cylinder. That is, when the fluid power source 132 supplies power to the driving cylinder 131 through the line 133, the piston 136 moves downward (Z2 direction) in the inner cavity 139 of the driving cylinder 131 against the elastic force of the return spring 138, and in turn, the driving lever 137 moves the transmission portion 134 downward, thereby moving the driving pawl 113 in the first direction. When the fluid power source 132 is deactivated to supply power to the driving cylinder 131, the piston 136 moves upward (Z1 direction) in the inner cavity 139 of the driving cylinder 131 by the elastic force of the return spring 138, and the driving rod 137 moves the transmission portion 134 upward, so that the driving pawl 113 moves in a second direction opposite to the first direction.

In the exemplary embodiment shown in fig. 1 to 4, the drive part 134 is designed as a drive 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 shoes form guide surfaces. The transmission block 134 moves in the guide track defined by the inner side faces S1 and S2 of the guide blocks 1351, 1352, driven by the drive mechanism 130. A hole (not shown) for fitting connection with the driving lever 137 is provided in an upper portion of the driving block, and a recess 1341 for mounting the pawl 113 is provided in a lower portion of the driving block.

In some embodiments, the drive cylinder 131 may be a pneumatic cylinder, with the fluid power source 132 correspondingly being a gas source. Preferably, the driving cylinder 131 may be a single-acting cylinder. Therefore, the operator can change the batch number only by inserting and dialing the air pressure source once before production. Furthermore, the change of the lot number can also be done without taking up production time or without opening the mold, i.e. the change of the lot number can be achieved in the mold closed state.

Alternatively, the drive cylinder may be a hydraulic cylinder, with the fluid power source 132 correspondingly being a hydraulic source. Preferably, the driving cylinder 131 may be a single-acting hydraulic cylinder.

As shown in fig. 4, an on-off valve 1331 for turning on or off the line 133 may be provided in the line 133. Therefore, an operator can simply control the switch valve to switch on and off the pipeline so as to change the batch number. Further, in this case, the marking device 100 may further include a controller (not shown) electrically connected to the switching valve 1331 and configured to control the connection or disconnection of the line 133 through the switching valve 1331. Thereby enabling further reduction in manual operations. For example, an event that triggers changing of the lot number may be stored in the controller in advance, and when the event occurs, the on-off valve action is triggered by the controller. For example, an operator may trigger a switch valve action by a physical button, or an operator may trigger a switch valve action by operating a virtual button on a display screen connected to the controller.

Further, as shown in fig. 4, a pressure reducing valve 1332 may be further provided in the line 133 to provide a pressure adapted to the driving cylinder 131.

In some embodiments, ratchet-pawl mechanism 110 may include a plurality of print wheels 111 and a plurality of ratchet wheels 112, with the number of print wheels 111 and ratchet wheels 112 being the same. Each of the character wheels 111 is fixedly connected to a corresponding one of the ratchet wheels 112 and is rotatably supported on the base 120 through a rotating shaft. A plurality of different code words M are arranged at regular intervals on the outer circumference of each print wheel 111, wherein the batch number is formed by a respective one of the code words on the respective print wheel or by the code word at the marking position P on the respective print wheel. Accordingly, the pawl 113 may include a plurality of forks, the number of which is the same as the number of the ratchet wheels, each fork being used to push a corresponding one of the ratchet wheels to rotate together with the character wheel fixedly connected to the ratchet wheel.

In one particular embodiment, as shown in fig. 1-4, the ratchet-pawl mechanism 110 includes a first print wheel 1111, a second print wheel 1112, a first ratchet wheel 1121, and a second ratchet wheel 1122. As shown in fig. 5, the pawl 113 may include a first fork 1131 and a second fork 1132, respectively. The first print wheel 1111 and the first ratchet wheel 1121 are fixedly connected and rotatably supported on the base 120 through a rotating shaft, a plurality of different first print codes M1 are uniformly spaced on the outer circumference of the first print wheel 111, and the first fork 1131 is used for pushing the first ratchet wheel 1121 to rotate together with the first print wheel 1111. The second print wheel 1112 and the second ratchet wheel 1122 are fixedly connected and rotatably supported on the base 120 through a rotating shaft, a plurality of different second print codes M2 are uniformly spaced on the outer circumference of the second print wheel 1112, and the second fork 1132 is used for pushing the second ratchet wheel 1122 to rotate together with the second print wheel 1112. The batch number is composed of a first character M1 and a second character M2, and more specifically, the batch number is composed of a first character M1 at a marking position P1 of the first character wheel 1111 and a second character M2 at a marking position P2 of the second character wheel 1112. Further, in this embodiment, the pawl 113 is configured such that, upon driving of the driving mechanism 130, after each interval that the first fork 1131 pushes the first ratchet wheel 1121 to rotate the first character codes together with the first character wheel 1111, the second fork 1132 pushes the second ratchet wheel 1122 to rotate the second character codes together with the second character wheel 1112 for at least one interval of the second character codes, that is, the ratchet-pawl mechanism 110 has an automatic carry function.

Taking the first character code M1 and the second character code M2 as numbers from 0 to 9 as an example, ten character codes from 0 to 9 are uniformly imprinted on the circumferences of the first character wheel 1111 and the second character wheel 1112. In the initial state, the characters at the mark 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 started, the pawl 113 is driven to reciprocate by the driving mechanism 130, each reciprocating motion of the first fork 1131 of the pawl 113 drives the first ratchet wheel 1121 and the first character wheel 1111 to rotate for an interval of one character code, and the character code at the marking position P1 of the first character wheel 1111 is sequentially changed from 0 to 1, from 1 to 2, from 8 to 9; before the character code at the mark position P1 of the first character wheel 1111 becomes 9, the second fork 1132 does not drive the second ratchet wheel 1121 to rotate, i.e., the second ratchet wheel 1121 keeps still; the batch numbers are 00, 01, 02, 03, 04, 05, 06, 07, 08, 09 in this order. When the number of the character 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, the pawl 113 is driven by the driving mechanism 130 to reciprocate once, the first fork 1131 of the pawl 113 drives the first ratchet wheel 1121 together with the first character wheel 1111 to rotate by the interval of one character, the number of the character at the marking position P1 of the first character wheel 1111 is changed from 9 to 0 again in sequence, and simultaneously the second fork 1132 of the pawl 113 pushes the second ratchet wheel 1122 together with the second character wheel 1112 to rotate by the interval of one character, the number of the character at the marking position P2 of the second character wheel 1112 is changed from 0 to 1, and the batch number is 10 at this time. When the code at the marking position P1 of the first wheel 1111 is changed from 9 to 0 again, the code at the marking position P2 of the second wheel 1112 is changed from 1 to 2, and so on. That is, the first fork 1131 pushes the first print wheel 1111 to rotate once, and the second fork 1132 pushes the second print wheel 1112 to rotate for an interval of one code.

In other words, every time the driving mechanism 130 drives the pawl 113, the first fork 1131 of the pawl 113 pushes the first ratchet wheel 1121 together with the first character wheel 1111 to rotate for an interval of one character code until after the first character wheel 1111 rotates for an interval of a predetermined number of character codes (for example, after the first character wheel 1111 rotates for one rotation), when the driving mechanism 130 drives the pawl 113 again, the first fork 1131 of the pawl 113 pushes the first ratchet wheel 1121 together with the first character wheel 1111 to rotate for an interval of one character code and at the same time the second fork 1132 of the pawl 113 pushes the second ratchet wheel 1122 together with the second character wheel 1112 to rotate for an interval of one character code.

Here, it is possible that the outer profiles of the first ratchet wheel 1121 and the second ratchet wheel 1122 are also different, and particularly, the diameter of the addendum circle of the first ratchet wheel 1121 is generally larger than that of the second ratchet wheel 1122; meanwhile, the outer contour of the first ratchet wheel 1121 at the position P1 marked by the first character wheel 1111, which is changed from 9 to 0, is different from the outer contour of the first ratchet wheel 1121 at other characters, particularly the tooth spaces thereof are designed to be deeper. Thus, when the character code at the mark position P1 of the first character wheel 1111 is changed from 0 to 1 and from 1 to 2.. to 9 in this order, the first fork 1131 of the pawl 113 acts on the ratchet wheel, and the second fork 1132 does not contact the second ratchet wheel 1122, so that the rotation of the second character wheel 1112 does not occur. And only when the code of the first print wheel 1111 changes from 9 times to 0, the second fork 1132 contacts and pushes the second ratchet wheel 1122 together with the second print wheel 1112. For this purpose, the first fork 1131 and the second fork 1132 of the pawl 113 may also have different outer contours to achieve an accurate dialing process.

Alternatively, it is also possible to arrange the first print wheel 1111 and the second print wheel 1112 in an interlocking manner, that is, to arrange a carry mechanism between the first print wheel 1111 and the second print wheel 1112, and to rotate the second print wheel 1112 by one print code interval after the first print wheel 1111 and the first ratchet wheel 1121 rotate by one rotation by the carry mechanism. For this purpose, it is conceivable to provide a cooperating advancing mechanism, for example, a carry tooth and a carry groove, on the side surfaces of the first print wheel 1111 that adjoin the second print wheel 1112. Thus, when the code at the marking position P1 of the first character wheel 1111 is changed from 9 to 0 again, the code at the marking position P2 of the second character wheel 1112 is changed.

A ratchet-pawl mechanism with more print wheels and more ratchet wheels can also be designed according to the above arrangement and principle of action.

In some embodiments, the marking device 100 may also have a counter 140. The counter 140 comprises at least one further rotatable print wheel 141, for example 5 rotatable print wheels 141, on the outer circumference of which a plurality of different numbers are arranged at regular intervals. It will be appreciated that the counter 140 may be constructed as described above with reference to the ratchet and pawl mechanism with automatic carry function, and will not be described herein.

Further, the count value of the counter 140 may be used as a signal for changing the lot number. For example, the controller is electrically connected to the driving mechanism 130 and the counter 140, and when the count value of the counter 140 reaches a preset threshold value, the controller sends a control signal to the driving mechanism 130, and the driving mechanism 130 drives the ratchet-pawl mechanism to change the lot number.

In some embodiments, the marking device 100 may have dimensions of no more than 10 centimeters by 5 centimeters by 10 centimeters. This makes it possible to quickly and safely change the batch number while achieving a compact marking device.

As shown in fig. 6, a schematic block diagram of a stamping apparatus 1000 provided by an embodiment of the present invention is shown. The stamping device 1000 is used for producing stamped parts, in particular for producing metal stamped parts.

The stamping apparatus 1000 comprises a stamping die 200 and at least one marking device 100 as described above. The press die 200 is used for pressing a workpiece (not shown) to be manufactured. The marking device 100 is configured to mark a lot number of a workpiece 300 to be manufactured when the workpiece to be manufactured is punched by the punching die 200. From this, when the word that is located mark position department is changed to needs, operating personnel can drive pawl reciprocating motion simply and fast through controlling actuating mechanism, and then makes the pawl promote the ratchet and drive the character wheel and rotate, need not to labouriously stir each character wheel of marking device with the hand.

In some embodiments, at least a portion of the components of the marking device 100 are mounted outside of the stamping die 200 or outside of the stamping die 200. For example, when the pipe 133 of the driving mechanism 130 of the marking device 100 is provided with the on-off valve 1331 for turning on or off the pipe 133, the on-off valve 1331 may be disposed outside the press mold 200, for example, in an outer wall, while the ratchet-pawl mechanism 110, the base 120, and the driving cylinder 131 of the driving mechanism 130 and a part of the pipe 133 of the marking device 100 are disposed inside the press mold, as shown in fig. 6. Therefore, an operator can realize quick and automatic replacement of the batch number only by controlling the switch valve 1331 outside the mold, the batch number does not need to enter the mold for manual replacement, and the safety is improved. In particular, the marking device 100 according to the invention can be used to retrofit existing stamping dies with manual marking devices without additional accommodation space being provided for this purpose on the stamping die. Therefore, the production process of the original stamping die can be improved, the time for manually replacing the character codes is saved, and the production efficiency is improved.

In some embodiments, the fluid power source 132 of the drive mechanism 130 of the marking device 100 may also be disposed outside of the stamping die 200, such as in an outer wall (as shown in fig. 6), or mounted outside of the stamping die 200.

In some embodiments, as shown in fig. 6, the punching die 200 includes a driving device (not shown) and an upper die 210 and a lower die 220 that are movable relative to each other by the driving device to punch a workpiece to be manufactured. At this time, the ratchet-pawl mechanism 110, the base 120, and the driving cylinder 131 and a portion of the pipe line 133 of the driving mechanism 130 of the marking device 100 may be disposed inside the upper mold 210, and the on-off valve 1331 and/or the fluid power source 132 provided in the pipe line 133 of the marking device 100 may be disposed in the groove 211 of the outer wall of the upper mold 210.

In some embodiments, the marking device 100 has a counter 140, the counter 140 comprising at least one further rotatable print wheel 141, a plurality of different numbers being evenly spaced on the outer circumference of the further rotatable print wheel 141. The counter 140 is configured to be linked with the relative movement of the upper and lower dies 210 and 220 such that the print wheel 141 rotates when the upper and lower dies 210 and 220 are relatively moved to punch a workpiece to be manufactured, thereby achieving counting. In other words, the counter 140 counts one time when the driving means of the punching apparatus 1000 drives the upper die 210 and the lower die 220 to move relative to each other to punch one workpiece. In this case, the marking device 100 can implement the respective drive of the code changes in two sets of code systems by means of different powers, without interfering with one another.

Other embodiments and advantages of the stamping apparatus 1000 can be found in the description of the various embodiments of the marking device 100 described above with reference to fig. 1 to 5, and will not be described again here.

The features or combinations of features mentioned above in the description, in the drawings and in the claims can be used in any combination with one another or alone, provided that they are meaningful and not mutually contradictory within the scope of the invention. The advantages and features explained for the marking device provided in accordance with the exemplary embodiments of the present invention apply in a corresponding manner to the stamping device provided in accordance with the exemplary embodiments of the present invention and vice versa.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.