Pad printing machine

Abstract

The invention relates to a pad printing machine which comprises a machine table, a pad printing device and a first position recognition module. The transfer printing device comprises a bearing unit, a product jig, a jig coarse positioning module, a jig correction module, an imprinting module, an inking module and a rubber head cleaning module, wherein the inking module and the rubber head cleaning module are adjacent to the imprinting module. The jig correction module comprises a first position identification assembly and a correction assembly; the impressing module comprises a rubber head assembly and a jacking assembly; the jig coarse positioning module, the correcting assembly and the jacking assembly are located below the bearing unit. The jig coarse positioning module is used for performing coarse positioning on the position of the product jig; the first position recognition assembly is used for collecting pose deviation of the product jig or a product on the product jig, and the correction assembly performs pose correction based on the pose deviation; the jacking assembly is used for jacking the product jig, and the glue head assembly is used for imprinting products on the product jig. According to the scheme, transfer printing operation can be carried out more accurately and reliably in the transfer printing process, and the yield of products is greatly improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of pad printing technology, in particular to a pad printing machine. BACKGROUND

[0002] Pad printing belongs to a kind of printing mode, which can print text, graphics and images on the surface of irregular shaped objects. The pad printing machine is usually provided with a pad printing head made of silicone rubber material, which can complete pad printing by dipping the ink with pre-set pad printing pattern and pressing on the corresponding position of the material to be printed. In order to ensure the pad printing effect, the material will be positioned by the pad printing machine before pad printing, so that the pad printing head can print on it conveniently. In addition, in order to realize the automatic processing of assembly line, the pad printing machine is generally provided with mechanical structure for feeding and discharging, so as to reduce the labor cost.

[0003] In the pad printing process, the target product is usually small in size, and the pad printing surface is the surface. Therefore, for pad printing of small volume products, how to keep the accurate and uniform position of the product and / or jig in the whole process is the key to improve the product yield. Therefore, how to improve the pad printing precision in the pad printing process is a problem to be solved at present.

[0004] In addition, in the current pad printing equipment, the product or / and jig is fixed on the bearing structure and is not removed, at this time, the pad printing head will directly transmit the pressure to the bearing structure when it is pressed on the product, which will cause the bearing structure to run unstably and deviate after a long time. Even if the product and jig are accurately positioned during feeding process, the running deviation of the bearing structure will also cause the appearance of defective products. Therefore, how to solve the separation of the pad printing head from the bearing structure and ensure the accurate position of the product and jig is another difficult problem to be solved. SUMMARY

[0005] The technical problem to be solved by the present application is to provide a pad printing machine.

[0006] In order to achieve the above-mentioned application purpose, the present application provides a pad printing machine, which comprises a machine table, a pad printing device arranged on the machine table, a first position recognition module arranged at the edge of the machine table, and a product jig detachably connected with the bearing unit. The pad printing device comprises a bearing unit, a product jig detachably connected with the bearing unit, a jig coarse positioning module, a jig correction module and a pressing module arranged in sequence along the running direction of the bearing unit, an ink feeding module adjacent to the pressing module and a glue head cleaning module. The jig correction module comprises a first position recognition assembly and a correction assembly arranged below the first position recognition assembly. The stamping module comprises a rubber head assembly and a jacking assembly arranged below the rubber head assembly; The jig coarse positioning module, the correction assembly and the jacking assembly are arranged below the bearing unit respectively; The jig coarse positioning module is used for coarsely positioning the position of the product jig; The first position recognition assembly is used for collecting the pose deviation of the product jig or the product on the product jig, and the correction assembly performs pose correction based on the pose deviation; The jacking assembly is used for jacking the product jig, and the rubber head assembly stamps the product on the product jig.

[0007] According to an aspect of the present application, the rubber head assembly is provided with at least one rubber head lifting mechanism; The rubber head lifting mechanism is provided with a rubber head for stamping; The jacking assembly is provided with a jig connecting piece for connecting with the product jig and a pressure sensor for sensing the product pressure on the product jig; The jacking assembly jacks the product jig based on the jig connecting piece to separate the product jig from the bearing unit; The rubber head lifting mechanism stamps the product on the product jig based on the rubber head, and controls the pressure of the rubber head based on the pressure feedback of the pressure sensor.

[0008] According to an aspect of the present application, the rubber head assembly further comprises a first rotating support; The first rotating support is connected with a plurality of rubber head lifting mechanisms, and the plurality of rubber head lifting mechanisms are arranged at equal intervals on the first rotating support; The rubber head lifting mechanism comprises a first driver, a first transmission, a first two-dimensional adjustment platform and a rubber head mounting base; The first driver, the first transmission, the first two-dimensional adjustment platform and the rubber head mounting base are sequentially mounted from top to bottom; The first driver drives the first two-dimensional adjustment platform and the rubber head mounting base to move in the vertical direction through the first transmission.

[0009] According to an aspect of the present application, the jacking assembly further comprises a second driver, a second transmission and a connecting piece mounting seat; The second driver, the second transmission and the connecting piece mounting seat are sequentially connected from bottom to top; The second driver drives the connecting piece mounting seat to move in the vertical direction through the second transmission; The jig connecting piece is detachably connected with the connecting piece mounting seat.

[0010] According to an aspect of the present application, the carrying unit comprises: a second rotating support, a jig carrying disc connected to the rotating shaft of the second rotating support, and a vacuum source connecting assembly installed on the jig carrying disc; The jig carrying disc is provided with a plurality of jig installation grooves for installing the product jigs; The bottom surface of the jig installation groove is embedded with a plurality of electromagnets for adsorbing the product jigs and contact switch mechanisms for controlling the on-off of the electromagnets, and a first channel and a second channel are arranged on the bottom surface of the jig installation groove; The jig coarse positioning module passes through the first channel to coarsely position the product jigs; The correction assembly and the jacking assembly are connected to the product jigs through the second channel, respectively.

[0011] According to an aspect of the present application, the product jig comprises: a jig main body; The upper side of the jig main body is provided with at least one work station for product installation; An adsorption groove for adsorbing products is arranged in the work station; A vacuum extraction channel is arranged in the interior of the jig main body, one end of the vacuum extraction channel is connected to the adsorption groove, and the other end of the vacuum extraction channel forms a connecting opening on the circumferential side of the jig main body for connecting the vacuum source connecting assembly; The circumferential side of the jig main body is provided with a plurality of coarse positioning grooves for the jig coarse positioning module, and the jig main body is provided with an intermediate positioning hole nested with the jig connecting piece; The coarse positioning grooves are arranged corresponding to the first channel arranged on the bottom surface of the jig installation groove, and the intermediate positioning hole is arranged corresponding to the second channel arranged on the bottom surface of the jig installation groove.

[0012] According to an aspect of the present application, the jig main body is further provided with a linkage control mechanism; The arrangement direction of the linkage control mechanism is consistent with the radial direction of the intermediate positioning hole; The linkage control mechanism comprises: a linkage telescopic rod and a linkage compression spring; The linkage telescopic rod comprises: a rod body portion, an abutting portion and a poking portion; Along the axial direction of the rod body portion, the abutting portion is arranged at one end of the rod body portion, and the poking portion is arranged close to the radial outer side of the other end of the rod body portion; The abutting portion protrudes from the inner side of the intermediate positioning hole, and the poking portion protrudes from the lower side of the jig main body; When the jig connector is nested with the intermediate positioning hole, the abutting portion is retracted, and the poking portion is pressed against the contact switch mechanism.

[0013] According to an aspect of the present application, the jig coarse positioning module comprises a third driver, a third transmission and a jaw mechanism. The third driver, the third transmission and the jaw mechanism are sequentially connected from bottom to top. The jaw mechanism comprises a jaw base, a jaw assembly slidingly connected with the jaw base, and a jaw drive connected with the jaw assembly. The jaw assembly is provided with a plurality of; The jaw assembly comprises two symmetrical and relatively movable jaws. The jaw comprises a horizontal connecting arm, a jig positioning rod and a sliding connector connected to the opposite ends of the horizontal connecting arm, respectively. The jig positioning rod is vertically installed on the upper side of the horizontal connecting arm, and the sliding connector is connected to the lower side of the horizontal connecting arm. The sliding connector is slidingly connected with the jaw base. The jaw drive is connected with the sliding connector. The sliding direction of the sliding connector relative to the jaw base is consistent with the length direction of the horizontal connecting arm.

[0014] According to an aspect of the present application, the correction assembly comprises a first X-axis translation structure, a first Y-axis translation structure, a first Z-axis translation structure, an angle adjustment structure and a suction structure. In the vertical direction, the first X-axis translation structure, the first Y-axis translation structure and the first Z-axis translation structure are sequentially arranged. The angle adjustment structure is installed on the first X-axis translation structure. The suction structure is supported on the angle adjustment structure. The suction structure is used for suction fixing the product jig or the product on the product jig. The axial direction of the angle adjustment structure is consistent with the moving direction of the first Z-axis translation structure, and the angle adjustment structure is used for driving the suction structure to swing within a preset angle range.

[0015] According to an aspect of the present application, the ink applying module comprises a pad printing plate assembly and an assembly adjustment support for adjusting the position of the pad printing plate assembly. The assembly adjustment support comprises a second X-axis translation structure and a second Y-axis translation structure. The second X-axis translation structure is supported on the second Y-axis translation structure, and the pad printing plate assembly is supported on the second X-axis translation structure; The pad printing device further comprises a product detection unit and a glue head detection unit; The product detection unit is arranged downstream of the embossing module with a spacing from the embossing module along the running direction of the bearing unit. The glue head detection unit is arranged adjacent to the embossing module. The pad printing device can be arranged as multiple devices on the machine table.

[0016] According to one scheme of the present application, the scheme performs multiple position calibration and optimization of the product from the loading stage to the pad printing stage, so that the scheme can perform pad printing work more accurately and reliably during pad printing, and greatly improves the yield of the product.

[0017] According to one scheme of the present application, the scheme controls the embossing process after lifting the jig, can control the stress in the embossing process in real time and accurately, and more effectively ensures the accuracy and reliability of the embossing work. In addition, the separation of the components from the bearing unit during the embossing process prevents the bearing unit from being affected by the pressure, thereby effectively ensuring the accuracy and reliability during the transmission process.

[0018] According to one scheme of the present application, the scheme can realize the linkage control of separation and lifting during the pad printing process, fully ensures the position uniformity of the product jig during the replacement of the support structure, so that the scheme can always maintain the accuracy of the jig position, and provides a reliable guarantee for ensuring the embossing precision of the product.

[0019] According to one scheme of the present application, the arrangement of the pressure sensor on the edge of the disc can make the distribution of the pressure sensor away from the shaft center, so that the pressure on the product jig can be more accurately felt through multi-point measurement whether there is a deflection, thereby being more beneficial for accurately controlling the pressure during the pad printing process, and providing a reliable guarantee for improving the quality yield of the product.

[0020] According to one scheme of the present application, the arrangement of the boss adsorption groove on the intermediate positioning hole can make the product jig have sufficient fixing means in the lifted state, realize the consistency of the position of the product jig before and after lifting, and effectively ensure the product embossing yield of the scheme.

[0021] According to one scheme of the present application, the scheme is characterized in that a boss is arranged in the middle positioning hole to form an adsorption groove, which can ensure the positioning accuracy and reliability between the product fixture and the second cylindrical boss, and facilitate the disengagement of the second cylindrical boss during the descending process. Since the second cylindrical boss moves axially during the disengagement process, the radial adsorption force has minimal impact on the axial movement, which can facilitate the stability of the product fixture position during the disengagement of the second cylindrical boss, until the electromagnet generates adsorption force again, thereby achieving the consistency of the product fixture position before and after the jacking.

[0022] According to one scheme of the present application, the first X-axis drive is arranged side by side with the first X-axis platform, which effectively reduces the vertical height of the first X-axis translation structure, thereby reducing the overall height of the correction assembly and facilitating its installation under the product support table.

[0023] According to one scheme of the present application, the pad assembly can be flexibly adjusted by the assembly adjustment support to adapt to different glue head lifting mechanisms, thereby fully ensuring the accuracy of the pad pattern. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 The structure diagram of the pad printing machine of one embodiment of the present application; Figure 2 The structure diagram of the jig correction module of one embodiment of the present application; Figure 3 The structure diagram of the pad printing module of one embodiment of the present application; Figure 4 The connection structure diagram of the first two-dimensional adjustment platform and the glue head of one embodiment of the present application; Figure 5 The structure diagram of the first two-dimensional adjustment platform of one embodiment of the present application; Figure 6 The structure diagram of the jig connecting piece of one embodiment of the present application; Figure 7 The cross-sectional view of the bearing unit of one embodiment of the present application; Figure 8 The local enlarged view of the jig bearing disc of one embodiment of the present application; Figure 9 The structure diagram of the product jig of one embodiment of the present application; Figure 10 The cross-sectional view of the product jig of one embodiment of the present application; Figure 11A structural diagram of a linkage control mechanism according to an embodiment of the present invention; Figure 12 is a cross-sectional view of a linkage control mechanism according to an embodiment of the present invention; Figure 13 A structural diagram of a switch movable portion according to an embodiment of the present invention; Figure 14 A cross-sectional view of a connected state of a jig connector, a jig carrier plate, and a product jig according to an embodiment of the present invention; Figure 15 This is a diagram showing an arrangement of boss adsorption grooves according to another embodiment of the present invention; Figure 16 This is a structural diagram of a jig coarse positioning module according to an embodiment of the present invention; Figure 17 A structural diagram of a correction component according to an embodiment of the present invention; Figure 18 is a side view of a correction assembly according to one embodiment of the present invention; Figure 19 A structural diagram of an assembly adjustment support according to an embodiment of the present invention. DETAILED DESCRIPTION

[0025] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. The embodiments cannot be described one by one here, but the embodiments of the present invention are not limited to the following embodiments.

[0026] like Figure 1 As shown, according to one embodiment of the present invention, a pad printing machine of the present invention includes: a machine platform 1, a pad printing device 2 mounted on the machine platform 1, and a first position recognition module 3 mounted on the edge of the machine platform 1. In this embodiment, the machine platform 1 can be configured as a frame-type machine platform with a regular shape, wherein the upper surface of the machine platform is used to arrange the various unit mechanisms to be installed above, while the interior of the machine platform can provide space for accommodating the remaining structures, thereby making the entire pad printing machine compact. In this embodiment, the first position recognition module 3 can be configured as a visual recognition device that integrates image acquisition and recognition. The first position recognition module 3 can be mounted on the side of the machine platform 1 with the image acquisition end facing upward. Thus, the product to be pad printed is moved above the first position recognition module 3 under the picking action of the loading mechanism, thereby achieving initial recognition and positioning of the product's position and posture. Then, the output result is fed back to the loading mechanism, which can adjust the position and posture of the product based on the loading mechanism and accurately place the product on the corresponding structure of the pad printing device 2. In this embodiment, the loading mechanism for picking up products can be implemented by a multi-degree-of-freedom robotic arm, which can be connected to the pad printing machine of this solution through a corresponding port to achieve automated control of the product loading process.

[0027] In the embodiment, the pad printing device 2 comprises a carrying unit 21, a product jig 22 detachably connected with the carrying unit 21, a jig coarse positioning module 23, a jig correction module 24 and a pad printing module 25 arranged in sequence along the running direction of the carrying unit 21, an inking module 26 and a glue head cleaning module 27 adjacent to the pad printing module 25; wherein, referring to Figure 2 The jig correction module 24 comprises a first position recognition assembly 241 and a correction assembly 242 arranged below the first position recognition assembly 241; referring to Figure 3 The pad printing module 25 comprises a glue head assembly 251 and a jacking assembly 252 arranged below the glue head assembly 251; further, the jig coarse positioning module 23, the correction assembly 242 and the jacking assembly 252 are respectively arranged below the carrying unit 21; thus, in the running process of the carrying unit 21, the product jig 22 installed thereon can pass through the jig coarse positioning module 23, the correction assembly 242 and the jacking assembly 252 in sequence, wherein the jig coarse positioning module 23 is used for coarsely positioning the position of the product jig 22, so that the arrangement position of the product jig 22 on the carrying unit 21 is optimized for the first time, so that it is easier to further optimize the position in the jig correction module 24, specifically, the first position recognition assembly 241 is used for collecting the pose deviation of the product jig 22 or the product on the product jig 22, and the correction assembly 242 corrects the pose based on the pose deviation; the jig position optimized after passing through the jig correction module 24 can achieve accurate alignment during pad printing, further, the jacking assembly 252 can accurately jack the product jig 22, and the glue head assembly 251 accurately pad prints the product on the product jig 22, effectively ensuring the pad printing precision of the scheme.

[0028] In combination with Figure 1 and Figure 3As shown, according to one embodiment of the present application, the glue head assembly 251 is provided with at least one glue head lifting mechanism 251a; wherein the lower end of the glue head lifting mechanism 251a is provided with a glue head 251aa for realizing the stamping; correspondingly, the glue head 251aa can be provided as a structure with elasticity to realize the matching with the surface of the product, so as to achieve the corresponding precise stamping effect. In the present embodiment, the product jig 22 can be detachably installed in correspondence with the corresponding position on the bearing unit 21, whereby the replacement and matching of the product jig 22 can be realized according to different products, so as to sufficiently improve the use flexibility of the present application. In the present embodiment, the jacking assembly 252 is provided with a jig connecting piece 252a for abutting against the product jig 22 and a pressure sensor 252b for sensing the pressure of the product on the product jig 22; wherein the jig connecting piece 252a can be provided as a solid structure with high hardness, such as a metal structure, etc. In the present embodiment, the jacking assembly 252 jacks up the product jig 22 based on the jig connecting piece 252a to make the product jig 22 disengage from the bearing unit 21. In the present embodiment, the pressure sensor 252b can be integrated in the jig connecting piece 252a, whereby the abutting of the jig connecting piece 252a against the product jig 22 can be realized to sense the corresponding pressure, so as to ensure the timely feedback of the read data; further, the glue head lifting mechanism 251a can control the pressure of the glue head 251aa during the stamping of the product on the product jig 22 based on the pressure value fed back by the pressure sensor 252b.

[0029] As shown in Figure 3 the present embodiment, the glue head lifting mechanism 251a further comprises: a first driver 251a1, a first transmission 251a2, a first two-dimensional adjustment platform 251a3 and a glue head mounting base 251a4; wherein the first driver 251a1, the first transmission 251a2, the first two-dimensional adjustment platform 251a3 and the glue head mounting base 251a4 are connected in sequence from top to bottom; specifically, the first transmission 251a2 controls the reciprocating movement of the first two-dimensional adjustment platform 251a3 and the glue head mounting base 251a4 in the vertical direction under the action of the first driver 251a1. In the present embodiment, the first driver 251a1 can adopt an electric mechanism (such as a servo motor, a stepper motor, etc.) for accurately outputting the displacement amount and the corresponding stamping pressure to be controlled. Further, the first transmission 251a2 is provided as a mechanical transmission structure for converting the rotation of the first driver 251a1 into linear displacement, which is specifically based on a threaded screw rod to realize the corresponding conversion effect, so as to accurately convert the output of the first driver 251a1 into linear extension.

[0030] In combination with Figure 4 and Figure 5As shown, according to one embodiment of the present application, the first two-dimensional adjustment platform 251a3 is used for realizing displacement adjustment in the horizontal direction, specifically, the first two-dimensional adjustment platform 251a3 comprises: a first platform part 251a3a, an intermediate part 251a3b and a second platform part 251a3c; wherein the first platform part 251a3a and the second platform part 251a3c are respectively located on the upper and lower sides of the intermediate part 251a3b, and the displacement adjustment between them is realized in a sliding connection manner. In the embodiment, the first platform part 251a3a comprises: a first platform plate body 251a3a1, a first sliding boss 251a3a2 arranged on one side of the first platform plate body 251a3a1 in the thickness direction, a first adjustment connecting seat 251a3a3 arranged on the first platform plate body 251a3a1 in the first direction, and a first position adjustment member 251a3a4 threadedly connected on the first adjustment connecting seat 251a3a3; wherein the first platform plate body 251a3a1 is a rectangular plate body, and in order to ensure the overall structural strength, the overall thickness thereof can be appropriately set according to the corresponding needs; in addition, in order to ensure the overall support precision of the first two-dimensional adjustment platform 251a3, the flatness and parallelism of the two sides of the first platform plate body 251a3a1 in the thickness direction are respectively set.

[0031] In the embodiment, the first sliding boss 251a3a2 extends along the first direction of the first platform plate body 251a3a1, thereby the position adjustment of the first platform plate body 251a3a1 relative to the intermediate part 251a3b can be realized based on the sliding cooperation of the first sliding boss 251a3a2 and the intermediate part 251a3b. Further, the cross-sectional shape of the first sliding boss 251a3a2 is isosceles trapezoidal, the upper base with smaller width of the first sliding boss 251a3a2 is fixedly connected with the lower side of the first platform plate body 251a3a1, thereby the sliding cooperation of the first sliding boss 251a3a2 and the intermediate part 251a3b can be realized while the freedom degree in the non-sliding direction between them can be sufficiently limited.

[0032] Further, the first adjustment connecting seat 251a3a3 and the first position adjustment member 251a3a4 are arranged to adjust and limit the position of the first platform plate body 251a3a1. In this embodiment, the first adjustment connecting seat 251a3a3 is in a block structure, and a connecting through hole and a connecting threaded hole are arranged on the first adjustment connecting seat 251a3a3. A threaded hole corresponding to the connecting through hole of the first adjustment connecting seat 251a3a3 is arranged on the end of the first platform plate body 251a3a1 in the first direction, and then the first adjustment connecting seat 251a3a3 is fixedly installed on the end of the first platform plate body 251a3a1 based on the threaded connecting member. In addition, the first position adjustment member 251a3a4 is screwed through the connecting threaded hole of the first adjustment connecting seat 251a3a3 to realize the mutual screwing. The connecting threaded hole of the first adjustment connecting seat 251a3a3 is opposite to the middle part 251a3b, so that the first position adjustment member 251a3a4 is rotated to abut against the side surface of the middle part 251a3b to accurately adjust the position between the first platform part 251a3a and the middle part 251a3b. Of course, the first position adjustment member 251a3a4 is arranged opposite to the end of the first platform plate body 251a3a1 based on the relative arrangement and the support of the first adjustment connecting seat 251a3a3 to accurately position the relative position. It should be noted that the first adjustment connecting seat 251a3a3 can also be installed on the end of the middle part 251a3b, so that the first position adjustment member 251a3a4 is arranged opposite to the end of the first platform plate body 251a3a1 to also adjust the position.

[0033] In this embodiment, the second platform part 251a3c includes a second platform plate body 251a3c1, a second sliding boss 251a3c2 arranged on one side of the second platform plate body 251a3c1 in the thickness direction, a second adjustment connecting seat 251a3c3 arranged on the second platform plate body 251a3c1 in the second direction, and a second position adjustment member 251a3c4 screwed on the second adjustment connecting seat 251a3c3. The second platform plate body 251a3c1 is a rectangular plate body, and the shape of the second platform plate body 251a3c1 is consistent with the shape of the first platform plate body 251a3a1. Further, the thickness of the second platform plate body 251a3c1 can be appropriately set according to the corresponding needs to ensure the overall structural strength of the second platform plate body 251a3c1. In addition, the flatness and parallelism of the two sides of the second platform plate body 251a3c1 in the thickness direction are set to ensure the overall support accuracy of the two-dimensional adjustment platform 251a3. In addition, the second direction is perpendicular to the first direction to adjust the position in the two directions.

[0034] In the embodiment, the second sliding boss 251a3c2 is arranged along the second direction of the second platform plate body 251a3c1, so that the position adjustment of the second platform plate body 251a3c1 relative to the middle part 251a3b can be realized based on the sliding cooperation between the second sliding boss 251a3c2 and the middle part 251a3b. Further, the cross-sectional shape of the second sliding boss 251a3c2 is isosceles trapezoidal, the upper base with smaller width of the second sliding boss 251a3c2 is fixedly connected with the upper side of the second platform plate body 251a3c1, so that the sliding cooperation between the second sliding boss 251a3c2 and the middle part 251a3b can be realized while the freedom degree in the non-sliding direction between them can be sufficiently limited.

[0035] Further, the second adjustment connecting seat 251a3c3 and the second position adjustment member 251a3c4 are arranged to realize the adjustment and limitation of the position of the second platform part 251a3c; in the embodiment, the second adjustment connecting seat 251a3c3 is in block structure, and the connecting through hole and the connecting threaded hole are arranged on the second adjustment connecting seat 251a3c3; the threaded hole corresponding to the connecting through hole of the second adjustment connecting seat 251a3c3 is arranged on the end of the second platform part 251a3c in the second direction, and then the second adjustment connecting seat 251a3c3 can be fixedly installed on the end of the second platform plate body 251a3c1 based on the threaded connecting member; in addition, the second position adjustment member 251a3c4 is screwed through the connecting threaded hole of the second adjustment connecting seat 251a3c3 to realize the screwing therebetween, wherein the connecting threaded hole of the second adjustment connecting seat 251a3c3 is opposite to the middle part 251a3b, so that the accurate adjustment of the position between the second platform part 251a3c and the middle part 251a3b can be realized by rotating the second position adjustment member 251a3c4 based on the abutting action between the end of the second position adjustment member 251a3c4 and the side surface of the middle part 251a3b. Of course, the accurate positioning of the relative position can be realized based on the oppositely arranged second position adjustment member 251a3c4 under the support of the second adjustment connecting seat 251a3c3. It should be noted that the second adjustment connecting seat 251a3c3 can also be installed on the end of the middle part 251a3b, so that the second position adjustment member 251a3c4 can be opposite to the end of the second platform plate body 251a3c1, and the position adjustment can also be realized.

[0036] In this embodiment, the middle portion 251a3b is generally rectangular, its shape being identical to that of the first platform plate 251a3a1, thereby achieving a consistent shape for the first two-dimensional adjustment platform 251a3. In this embodiment, a scale for marking position adjustment can be provided on at least one of the first platform portion 251a3a, the middle portion 251a3b, and the second platform portion 251a3c, thereby achieving accurate calibration of position adjustment.

[0037] Combine Figure 3 and Figure 4 As shown, according to one embodiment of the present invention, the rubber head mounting base 251a4 adopts a plate-like structure as a whole, and is connected to the first two-dimensional adjustment platform 251a3 by a detachable connection method; further, in order to facilitate the installation of the rubber head 251aa, a quick-release method can be used to connect the rubber head 251aa and the rubber head mounting base 251a4.

[0038] like Figure 3 As shown, according to one embodiment of the present invention, the glue head assembly 251 also includes: a first rotating support 251b; wherein, the first rotating support 251b includes: a first rotating drive 251b1 and a first rotating bearing structure 251b2 connected to the rotating shaft of the first rotating drive 251b1; further, the glue head lifting mechanism 251a is connected to the first rotating bearing structure 251b2, thereby, the switching of the glue head lifting mechanism 251a installed on the first rotating bearing structure 251b2 can be realized based on the operation of the first rotating drive 251b1; further, in this embodiment, a plurality of glue head assembly mounting positions can be set on the first rotating bearing structure 251b2 to facilitate the installation of multiple glue head lifting mechanisms 251a.

[0039] In this embodiment, the first rotating support structure 251b2 comprises a cylindrical support 251b21 and a bottom connector. The bottom connector is a plate-shaped structure that is mounted to the rotating shaft of the first rotating drive 251b1 using a threaded connection. Furthermore, two or four rubber head assembly mounting locations may be evenly spaced along the circumference of the cylindrical support 251b21. To facilitate installation with the rubber head lifting mechanism 251a, a radially outward protrusion may be provided on the outer surface of the cylindrical support 251b21. The side of the protrusion facing away from the cylindrical support 251b21 is machined to form a rubber head assembly mounting location for mounting the rubber head lifting mechanism 251a. In this embodiment, the rubber head assembly mounting location may be configured as a mounting plane parallel to the axial direction of the cylindrical support 251b21. In this embodiment, multiple mounting holes may be regularly arranged on the rubber head assembly mounting location, thereby enabling the rubber head lifting mechanism 251a to be pressed against the rubber head assembly mounting location using a threaded connection.

[0040] likeFigure 3 As shown, according to an embodiment of the present application, a stop bump 251b211 is arranged outside the cylindrical support 251b21 and adjacent to the position of the rubber head assembly mounting site, and a correction bump 251a21 is arranged on the side of the first driver 251a2 corresponding to the stop bump 251b211; wherein the stop bump 251b211 and the correction bump 251a21 are arranged in the vertical direction (i.e. the stop bump 251b211 is above the correction bump 251a21, or the stop bump 251b211 is below the correction bump 251a21); further, a threaded hole can be arranged on the stop bump 251b211 or the correction bump 251a21, and a correction bolt a is mounted corresponding to the threaded hole, and further, the correction bolt a is abutted against the other bump, so as to realize accurate adjustment of the vertical direction of the first driver 251a2, greatly guaranteeing the vertical direction of the product pressure direction, thereby being more beneficial to improving the pressure control accuracy of the present application.

[0041] As shown in the figure, Figure 3 As shown, according to an embodiment of the present application, the jacking assembly 252 is arranged below the rubber head lifting mechanism 251a, wherein the jacking assembly 252 further comprises a second driver 252c, a second driver 252d and a connecting piece mounting seat 252e; specifically, the second driver 252c, the second driver 252d and the connecting piece mounting seat 252e are connected in sequence from bottom to top, and threaded connecting pieces are used between the components. Therefore, the second driver 252d controls the reciprocating movement of the connecting piece mounting seat 252e in the vertical direction under the action of the second driver 252c. In this embodiment, the second driver 252c can adopt an electric mechanism (such as a servo motor, a stepping motor, etc.) for accurate output of the required displacement amount to be controlled. Further, the second driver 252d is arranged as a mechanical transmission structure for converting the rotation of the second driver 252c into linear displacement, which is specifically based on a threaded screw rod to realize the corresponding conversion effect, so as to accurately convert the output of the second driver 252c into linear extension, thereby accurately realizing the abutment of the jig connecting piece 252a with the lower side of the product jig 22, and making the product jig 22 be jacked up to a preset height. In this embodiment, the connecting piece mounting seat 252e is arranged as a regular plate body as a whole, and the connecting piece mounting seat 252e is connected with the extension end of the second driver 252d by threaded connecting pieces. Further, the upper side of the connecting piece mounting seat 252e is provided with a fitting installation protrusion.

[0042] As shown in the figure, Figure 6As shown, according to an embodiment of the present application, the jig connecting piece 252a comprises: a jig connecting part 252a1 and a mounting seat connecting part 252a2 arranged in sequence from top to bottom; wherein the jig connecting part 252a1 and the mounting seat connecting part 252a2 are coaxially arranged. In the present embodiment, the jig connecting part 252a1 comprises: a first connecting disc 252a11, a first cylindrical boss 252a12 coaxially arranged with the first connecting disc 252a11, and a second cylindrical boss 252a13 coaxially arranged with the first cylindrical boss 252a12, wherein the radial dimension of the second cylindrical boss 252a13 is smaller than the radial dimension of the first cylindrical boss 252a12, so that the positioning and connecting between the jig connecting piece 252a and the product jig 22 can be realized by abutting the first cylindrical boss 252a12 against the bottom of the product jig 22 and inserting the second cylindrical boss 252a13 into the corresponding middle positioning hole 221e of the product jig 22.

[0043] Further, the mounting seat connecting part 252a2 comprises: a second connecting disc 252a21; wherein a disc positioning groove 252a22 for nesting positioning with the embedded mounting boss is arranged on the side of the second connecting disc 252a21 away from the jig connecting part 252a1, so as to realize the accurate positioning of the connecting piece mounting seat 252e and ensure the detachable replacement therebetween.

[0044] In the present embodiment, the pressure sensor 252b can be installed and arranged between the first connecting disc 252a11 and the second connecting disc 252a21, and the pressure applied to the first connecting disc 252a11 can be timely and accurately transmitted to the pressure sensor 252b through the connection of the upper and lower ends of the pressure sensor 252b with the first connecting disc 252a11 and the second connecting disc 252a21 respectively. In the present embodiment, the pressure sensor 252b is arranged away from the edge of the disc (i.e. the first connecting disc 252a11 and the second connecting disc 252a21), and a plurality of (such as 3, 4, etc.) pressure sensors 252b are arranged equidistantly along the circumference of the disc. By arranging the pressure sensors 252b away from the edge of the disc in the above manner, the distribution of the pressure sensors 252b can be away from the shaft center, so that the pressure on the product jig 22 can be more accurately sensed through multi-point measurement whether there is a deflection, thereby being more beneficial for the precise control of the pressure of the pad printing process and providing reliable guarantee for improving the quality yield of the product.

[0045] In combination with Figure 1 , Figure 3 , Figure 7 and Figure 8As shown, according to an embodiment of the present application, the carrying unit 21 further comprises: a second rotating support 211 and a jig carrying disc 212 connected to the rotating shaft of the second rotating support 211, a vacuum source connecting assembly 213 installed on the jig carrying disc 212; wherein the jig carrying disc 212 is provided with a jig mounting groove 2121 for mounting the product jig 22; in the present embodiment, the bottom surface of the jig mounting groove 2121 is embedded with a plurality of electromagnets 2121a for adsorbing the product jig 22 and a contact switch mechanism 2121b for controlling the on-off of the electromagnets 2121a, and a first channel and a second channel are provided on the bottom surface of the jig mounting groove 2121; wherein the reliable positioning of the product jig 22 can be realized by the magnetic force generated by the electromagnets 2121a in the energized state. The contact switch mechanism 2121b is a normally closed contact switch, which keeps the closed circuit of the electromagnets 2121a connected under non-pressing condition, and realizes the open circuit control of the electromagnets 2121a connection circuit after being pressed and reaching the disconnection stroke, realizing the disappearance of the magnetic force. Therefore, based on the pressing control of the contact switch mechanism 2121b, the linkage unlocking can be realized under the condition that the jig connecting piece 252a is reliably connected with the product jig 22 during the jacking of the product jig 22, so as to fully avoid the influence of the structure precision of the jig carrying disc 212 during the jacking process, and in addition, the influence of the external force on the position precision of the product jig during the jacking process can also be effectively avoided, which is beneficial to ensuring the consistency of the position of the product jig 22 before and after the embossing. In the present embodiment, the jig coarse positioning module 23 coarsely positions the product jig 22 through the first channel; the correction assembly 242 and the jacking assembly 252 are connected with the product jig 22 through the second channel respectively.

[0046] As Figure 9As shown, according to an embodiment of the present application, the product jig 22 comprises: a jig body 221; wherein the upper side of the jig body 221 is provided with at least one work station for product installation; and an adsorption groove 221a for adsorbing the product is arranged at the work station; in the present embodiment, a vacuum extraction channel 221b is arranged inside the jig body 221, one end of the vacuum extraction channel 221b is communicated with the adsorption groove 221a, and the other end of the vacuum extraction channel 221b forms a connecting opening 221c for connecting the vacuum source connecting assembly 213 at the circumferential side of the jig body 221; thus, the product can be placed on the adsorption groove 221a and adsorbed by vacuum, so as to ensure the accurate and reliable position of the product. In the present embodiment, the adsorption groove 221a is an annular groove; since the adsorption groove 221a needs to adsorb the product, the setting area of the adsorption groove 221a is smaller than the surface area of the product. Of course, the adsorption groove 221a can also be transformed into other setting forms, for example, a plurality of holes arranged in an array, a linear groove, etc., the principle is consistent, and reliable adsorption of the product can be realized, which will not be described here.

[0047] In addition, since the adsorption groove 221a is arranged at the upper side of the jig body 221, so as to facilitate the connection of the vacuum extraction channel 221b, the vacuum extraction channel 221b can be arranged as a vertical channel part and a horizontal channel part to pass through each other, so that the position of the connecting opening 221c can be more easily arranged. In the present embodiment, a quick connector can be arranged at the connecting opening 221c for facilitating the connection with the vacuum source connecting assembly 213, and a hose connection mode is adopted to communicate the two, so as to avoid the influence of the pipeline on the installation position of the product jig 22.

[0048] In the present embodiment, a plurality of coarse positioning grooves 221d for the jig coarse positioning module 23 are arranged at the circumferential side of the jig body 221, and a middle positioning hole 221e for nested connection with the jig connecting piece 252a is arranged in the middle of the jig body 221; wherein the coarse positioning grooves 221d are arranged corresponding to the first channel arranged at the bottom surface of the jig installation groove 2121, and the middle positioning hole 221e is arranged corresponding to the second channel arranged at the bottom surface of the jig installation groove 2121.

[0049] In combination with Figure 10 , Figure 11 and Figure 12As shown, according to an embodiment of the present application, the jig body 221 is further provided with a linkage control mechanism 221f; wherein, the arrangement direction of the linkage control mechanism 221f is consistent with the radial direction of the middle positioning hole 221e; in the present embodiment, the linkage control mechanism 221f is a linearly compressible and extendable mechanism as a whole, which comprises: a linkage telescopic rod 221f1 and a linkage compression spring 221f2; wherein, the linkage telescopic rod 221f1 comprises: a rod body portion 221f11, an abutting portion 221f12 and a poking portion 221f13; in the present embodiment, along the axial direction of the rod body portion 221f11, the abutting portion 221f12 is arranged at one end of the rod body portion 221f11, and the poking portion 221f13 is arranged at the radially outer side of the other end of the rod body portion 221f11. In the present embodiment, in order to facilitate the installation of the linkage control mechanism 221f, a mounting channel 221g can be further arranged on the jig body 221, which is open at the inner side of the middle positioning hole 221e and the circumferential outer side of the jig body 221 respectively, so that when the linkage control mechanism 221f is installed in the mounting channel 221g, the abutting portion 221f12 protrudes from the inner side of the middle positioning hole 221e, and the poking portion 221f13 protrudes from the lower side of the jig body 221; wherein, in order to ensure the protrusion of the poking portion 221f13, a protruding channel 221h is also arranged on the lower side of the jig body 221 for the protrusion of the poking portion 221f13.

[0050] In the present embodiment, the rod body portion 221f11 comprises: a coaxially arranged rod body front portion 221f111 and a rod body rear portion 221f112; wherein, the outer diameter of the rod body front portion 221f111 is consistent with the radial dimension of the mounting channel 221g, and the outer diameter of the rod body rear portion 221f112 is smaller than that of the rod body front portion 221f111, so that in order to facilitate the installation of the linkage telescopic rod 221f1, a sliding sleeve 221f3 and a screw plug 221f4 can be further arranged in the linkage control mechanism 221f; wherein, the sliding sleeve 221f3 is a circular tube with one end open and the other end closed, the inner diameter of which is consistent with the outer diameter of the rod body rear portion 221f112, and the outer diameter of which is consistent with the inner diameter of the mounting channel 221g, so that the rod body rear portion 221f112 can be slidably installed in the sliding sleeve 221f3, and the linkage compression spring 221f2 can be arranged in the sliding sleeve 221f3.

[0051] In the present embodiment, in order to facilitate the installation of the actuating portion 221f13, a radially penetrating actuating portion installation cavity 221f112a is formed in the rear portion 221f112 of the rod body, and the actuating portion 221f13 is connected to the actuating portion installation cavity 221f112a by means of hard connection, such as welding, threaded connection, preferably threaded connection, which can facilitate the adjustment of the extension length of the actuating portion 221f13 for controlling the degree of depression of the contact switch mechanism 2121b. Of course, the actuating portion 221f13 can be installed in the actuating portion installation cavity 221f112a by means of sliding connection, and a compression spring and a corresponding plug screw can be further arranged in the actuating portion installation cavity 221f112a to elastically install the actuating portion 221f13.

[0052] In the present embodiment, in order to improve the integrity of the linkage control mechanism 221f and the convenience of its disassembly, a long circular hole 221f31 for the sliding of the actuating portion 221f13 is formed on the sliding sleeve 221f3, and the length of the long circular hole 221f31 is at least consistent with the length of the protruding channel 221h, so that the linkage telescopic rod 221f1 can be clamped in the sliding sleeve 221f3 based on the installed actuating portion 221f13 to achieve the structural integrity, and the disassembly of the tool body 221 is also facilitated.

[0053] In the present embodiment, the threaded plug 221f4 is used to seal the linkage control mechanism 221f in the installation channel 221g, and for this purpose, the outer side of the threaded plug 221f4 and the inner side of the end of the installation channel 221g are provided with threads that are screwed with each other to achieve the installation. In addition, by controlling the length of the threaded plug 221f4, the elastic force of the linkage compression spring 221f2 can also be controlled, which can achieve the control of the smoothness of the telescopic process, and fully ensure the convenience of the connection process of the product jig 22 and the jig connecting piece 252a.

[0054] In the embodiment, when the jig connecting piece 252a is nested with the middle positioning hole 221e, the abutting part 221f12 is retracted, and the poking part 221f13 is pressed against the contact switch mechanism 2121b; in order to facilitate the nesting of the second cylindrical boss 252a13 on the jig connecting piece 252a in the middle positioning hole 221e, a cutting surface 252a14 can be arranged on the side opposite to the abutting part 221f12 of the second cylindrical boss 252a13. In the embodiment, the cutting surface 252a14 has an inclined cutting part, and the inclined cutting part is located at the lower end of the cutting surface 252a14. Thus, during the upward movement of the jig connecting piece 252a, the upper part of the cutting surface 252a14 can sufficiently avoid the abutting part 221f12, and after the jig connecting piece 252a is lifted for a distance, the upper end of the second cylindrical boss 252a13 has sufficient matching length with the middle positioning hole 221e, thereby sufficiently ensuring the matching precision between the second cylindrical boss 252a13 and the product jig 22, and thus being more beneficial to the position keeping of the product jig 22. Further, with the lifting of the second cylindrical boss 252a13, the inclined cutting part at the lower end of the cutting surface 252a14 starts to contact the abutting part 221f12 to push the linkage telescopic rod 221f1 to retract, until the cylindrical surface of the second cylindrical boss 252a13 completely presses the end of the abutting part 221f12 to be flush with the inner side of the middle positioning hole 221e. In this state, the poking part 221f13 moves with the linkage telescopic rod 221f1 to reach the maximum stroke to press against the upper end of the contact switch mechanism 2121b, thereby cutting off the connection circuit of the electromagnet 2121a, and thus the product jig 21 can be synchronously separated from the bearing unit 21 under the action of the bottom surface of the product jig 21 abutting against the first cylindrical boss 252a12, so as to effectively ensure the unified reliability of the position precision of the product jig 21 when switched to the contact of the jacking assembly 252.

[0055] In combination Figure 13 and Figure 14 As shown in FIGS. 12 and 13, according to an embodiment of the present application, the contact switch mechanism 2121b comprises a switch movable part 2121b1 and a switch housing; in the embodiment, the switch movable part 2121b1 comprises a movable part body 2121b11, a spring sheet 2121b12 connected to the movable part body 2121b11, and a movable part support spring 2121b13 connected to the lower end of the movable part body 2121b11; wherein the movable part body 2121b11 is arranged as an insulating rod, and the spring sheet 2121b12 is arranged as an elongated elastic plate body, which is fixedly inserted into the movable part body 2121b11 in a direction perpendicular to the movable part body 2121b11, and the contact is arranged on the upper side of the opposite ends of the spring sheet 2121b12. In the embodiment, the spring sheet 2121b12 is of a conductive structure.

[0056] In the embodiment, the lower end of the movable part body 2121b11 is coaxially sleeved with the movable part support spring 2121b13, and the upper end of the movable part body 2121b11 is provided with a contact part abutting against the knob part 221f13. In the embodiment, the contact part can be provided as a trapezoidal boss or a joint conical boss to facilitate contact and guidance with the knob part 221f13, so as to reduce rigid contact between each other, inhibit impact of contact between structures, and thus be more beneficial to guarantee accurate and reliable position of the product jig 22.

[0057] In the embodiment, the switch housing is used to enclose the switch movable part 2121b1, wherein the switch housing reliably includes an insulating shell and a terminal arranged in the insulating shell. In the embodiment, two terminals are arranged at intervals, and are respectively connected with the two ends of the contact of the elastic sheet 2121b12. The lower end of the movable part support spring 2121b13 abuts against the bottom of the insulating shell. Thus, in the initial state, the contact switch mechanism 2121b belonging to the normally closed switch is pressed against the two terminals by the elastic sheet 2121b12 under the support of the movable part support spring 2121b13. Since the elastic sheet 2121b12 itself has a certain elasticity, the elastic sheet 2121b12 can be bent under the support of the movable part support spring 2121b13. At this time, a long stroke is required to disconnect the contact switch mechanism 2121b. After the elastic sheet 2121b12 is disconnected from the terminal under the pressure of the movable part body 2121b11, the elastic sheet 2121b12 can be elastically restored to the original state. At this time, the stroke for reconnecting the circuit is shortened. Based on this, the second cylindrical boss 252a13 is inserted into the intermediate positioning hole 221e by the arranged contact switch mechanism 2121b, so as to have a long stroke to realize sufficient abutting contact between the jig connecting part 252a and the product jig 22 in the effective time of the electromagnet 2121a. When the electromagnet 2121a is invalid, the product jig 22 can be timely lifted. With the increase of the lifting distance, the elastic sheet 2121b12 and the terminal can be reconnected in less than the disconnection time. At this time, the product jig 22 and the bearing unit 21 have a certain interval distance, but the magnetic force generated by the reconnected electromagnet 2121a can still act on the product jig 22, so as to make the product jig 22 and the jig connecting part 252a contact more closely to eliminate the gap possibly existing in the lifting process, and more effectively guarantee the connection and positioning accuracy between the product jig 22 and the jig connecting part 252a.

[0058] As Figure 10As shown, according to an embodiment of the present application, to further improve the connection reliability of the second cylindrical boss 252a13 and the intermediate positioning hole 221e, a boss adsorption groove 221e1 can be further arranged on the inner side of the intermediate positioning hole 221e, and a first transition connection channel 221e2 that communicates with the vacuum extraction channel 221b and the mounting channel 221g is arranged on the jig body 221, and a first sealing ring 221f121 is arranged on the abutting portion 221f12, and a second sealing ring 221f112b is sleeved on the rod body rear portion 221f112.

[0059] In the present embodiment, in the initial state, based on the elasticity of the linkage compression spring 221f2, the rod body front portion 221f111 can press the first sealing ring 221f121 against the limiting step of the mounting channel 221g, and the outer side surface of the rod body front portion 221f111 blocks the opening of the first transition connection channel 221e2 formed on the mounting channel 221g. At this time, the overall length of the rod body front portion 221f111 can be arranged to block the opening of the first transition connection channel 221e2, and when the linkage telescopic rod 221f1 is retracted, the rod body front portion 221f111 is misaligned with the opening of the first transition connection channel 221e2 to achieve communication control between the vacuum extraction channels.

[0060] In the present embodiment, the boss adsorption groove 221e1 can directly communicate with the opening of the mounting channel 221g, so that when the abutting portion 221f12 is pressed into the mounting channel 221g, the boss adsorption groove 221e1 and the vacuum extraction channel are communicated to adsorb the outer side surface of the second cylindrical boss 252a13, further improving the connection reliability and stability between them, so that the product jig 22 can still be fully fixed during the product pressing process, effectively avoiding the influence of the total external force on the product jig 22 pose during the pressing process, and being more beneficial to ensuring the accuracy of the product jig 22 before and after pressing. In the present embodiment, to ensure sufficient adsorption of the boss adsorption groove 221e1 to the second cylindrical boss 252a13, it is necessary to ensure that the cylindrical surface portion of the second cylindrical boss 252a13 is completely closed to the boss adsorption groove 221e1. In the present embodiment, to achieve sufficient communication between the boss adsorption groove 221e1 and the vacuum extraction channel, a groove can be further machined on the outer side surface of the abutting portion 221f12 to increase the conduction area so that its adsorption performance is better.

[0061] Referring to Figure 15In another embodiment, the boss suction groove 221e1 is arranged below the linkage control mechanism 221f, and the boss suction groove 221e1 is connected to the mounting channel 221g through the second transition connection channel 221e3. Similarly, the rod body front part 221f111 still blocks and opens the opening of the second transition connection channel 221e3 in the mounting channel 221g. In this embodiment, the opening of the first transition connection channel 221e2 in the mounting channel 221g is staggered with the opening of the second transition connection channel 221e3 in the mounting channel 221g in the direction from the abutting part 221f12 to the rod body front part 221f111, and the opening of the second transition connection channel 221e3 is arranged in front. Therefore, during the process of pressing back the abutting part 221f12, the rod body front part 221f111 first opens the opening of the second transition connection channel 221e3, and finally, when the abutting part 221f12 is completely pressed in, the opening of the first transition connection channel 221e2 is opened to realize the connection of the vacuum passage and produce the suction effect. In this embodiment, the boss suction groove 221e1 is arranged below to make the boss suction groove 221e1 be closed by the second cylindrical boss 252a13 first, and the staggered arrangement of the openings makes the connection process of the vacuum channel have a time difference, so that the connection process of the vacuum channel is synchronized with the power-off process of the electromagnet 2121a, and the closing process of the boss suction groove 221e1 is more preferential, which is beneficial to the stability of the whole vacuum channel pressure and avoids the influence on the product suction performance.

[0062] In another embodiment, when the boss suction groove 221e1 is arranged below the linkage control mechanism 221f, the intermediate positioning hole 221e is arranged as a tapered ring surface to position the boss suction groove 221e1. Therefore, the corresponding position of the second cylindrical boss 252a13 is matched as a tapered ring surface. In this structure, the tapered ring surface can more easily improve the closing performance of the boss suction groove 221e1, which is beneficial to eliminating the gap between them to ensure the stability of the suction.

[0063] Through the above arrangement, the product fixture 22 still has sufficient fixing means in the jacking state through the further arrangement of the boss suction groove 221e1 in the intermediate positioning hole 221e in this scheme, which realizes the consistency of the position of the product fixture before and after jacking, and effectively guarantees the product pressure printing yield of this scheme.

[0064] Through the above-mentioned setting, this scheme chooses to set the boss adsorption groove 221e1 on the middle positioning hole 221e, which on the one hand ensures the positioning accuracy and reliability between the product fixture 22 and the second cylindrical boss 252a13, and on the other hand facilitates the disengagement of the second cylindrical boss 252a13 during the descent process. In particular, since the second cylindrical boss 252a13 moves axially during the disengagement process, the radial adsorption force has the least effect on the axial movement. Therefore, it is more convenient to maintain the stability of the position of the product fixture 22 during the disengagement of the second cylindrical boss 252a13 until the electromagnet 2121a generates adsorption force again, thereby achieving the consistency of the position of the product fixture 22 before and after lifting.

[0065] like Figure 16 As shown, according to one embodiment of the present invention, the jig coarse positioning module 23 includes: a third driver 231, a third transmission 232, and a clamping mechanism 233. The third driver 231 drives the clamping mechanism 233 to move vertically based on the third transmission 232. When the clamping mechanism 233 reaches its highest position, it actuates to coarsely position the product jig. In this embodiment, the third driver 231, the third transmission 232, and the clamping mechanism 233 are sequentially connected from bottom to top. The clamping mechanism 233 includes: a clamping base 233a, a clamping assembly 233b slidably connected to the clamping base 233a, and a clamping drive 233c connected to the clamping assembly 233b. Multiple clamping assemblies 233b are provided. In this embodiment, the clamping jaw assembly 233b includes two symmetrical, relatively movable clamping jaws 233b1. The clamping jaws 233b1 include a horizontal connecting arm 233b11, a jig positioning rod 233b12 connected to opposite ends of the horizontal connecting arm 233b11, and a sliding connector 233b13. In this embodiment, the jig positioning rod 233b12 is vertically mounted on the upper side of the horizontal connecting arm 233b11, and the sliding connector 233b13 is connected to the lower side of the horizontal connecting arm 233b11. The sliding connector 233b13 is slidably connected to the clamping jaw base 233a. The clamping jaw drive 233c is connected to the sliding connector 233b13. The sliding direction of the sliding connector 233b13 relative to the clamping jaw base 233a is aligned with the length of the horizontal connecting arm 233b11. In this embodiment, the clamping jaw drive 233c can be configured as a pneumatic cylinder or an electric drive (e.g., a rack and pinion structure).

[0066] like Figure 17As shown, according to one embodiment of the present application, the correction assembly 242 comprises: a first X-axis translation structure 2421, a first Y-axis translation structure 2422, a first Z-axis translation structure 2423, an angle adjustment structure 2424 and an adsorption structure 2425; wherein, along the vertical direction, the first X-axis translation structure 2421, the first Y-axis translation structure 2422 and the first Z-axis translation structure 2423 are sequentially arranged; the first Z-axis translation structure 2423 is a bearing unit of the entire unit, so as to realize the position adjustment of the first X-axis translation structure 2421, the first Y-axis translation structure 2422, the angle adjustment structure 2424 and the adsorption structure 2425 in the Z-axis direction (i.e. the vertical direction). Further, the angle adjustment structure 2424 is installed on the first X-axis translation structure 2421; the adsorption structure 2425 is supported on the angle adjustment structure 2424; wherein, the adsorption structure 2425 is used for adsorbing and fixing the product or the product jig 22 supporting the product. Thus, based on the adsorption effect of the adsorption structure 2425, the driving in the three-dimensional direction under the action of the first X-axis translation structure 2421, the first Y-axis translation structure 2422 and the first Z-axis translation structure 2423 can be realized, so as to achieve the corresponding displacement adjustment effect. Specifically, based on the first Z-axis translation structure 2423, the product or the product jig 22 is lifted, and then the position of the product or the product jig 22 in the horizontal direction is adjusted under the action of the first X-axis translation structure 2421 and the first Y-axis translation structure 2422. Further, the axial direction of the angle adjustment structure 2424 is consistent with the Z-axis direction, and the angle adjustment structure 2424 is used for driving the adsorption structure 2425 to swing within a preset angle range. Thus, under the driving action of the angle adjustment structure 2424, the rotation angle of the product or the product jig 22 can be adjusted, so as to achieve the accurate adjustment of the position and the angle of the product or the product jig 22.

[0067] In combination Figure 17 And Figure 18 As shown, according to one embodiment of the present application, the angle adjustment structure 2424 comprises: an adjustment driving motor 2424a and a transmission mechanism 2424b connected with the rotation shaft of the adjustment driving motor 2424a; wherein, the adjustment driving motor 2424a and the transmission mechanism 2424b are respectively connected with the upper and lower sides of the first X-axis translation structure 2421; the transmission mechanism 2424b is provided with a rotation input end 2424b1 and a rotation output end 2424b2; further, the output shaft of the adjustment driving motor 2424a is connected with the rotation input end 2424b1.

[0068] In combination Figure 17 And Figure 18As shown, according to one embodiment of the present application, the transmission mechanism 2424b is provided with a swing limiting piece 2424b3 and a limiting sensor 2424b4; wherein the swing limiting piece 2424b3 is coaxially arranged with the rotating output end 2424b2 of the transmission mechanism 2424b. In the present embodiment, the swing limiting piece 2424b3 has at least one extension part 2424b31, and a swing indicating piece 2424b32 is arranged at the end of the extension part 2424b31; further, two limiting sensors 2424b4 are arranged in intervals, so as to limit the preset angle range of the movable angle adjustment structure 2424 based on the swing indicating piece 2424b32 and the limiting sensor 2424b4. In the present embodiment, the two limiting sensors 2424b4 are arranged around the transmission mechanism 2424b, so that the swing indicating piece 2424b32 can be moved to the position of the limiting sensor 2424b4 to realize the detection of the angle deflection limit. In the present embodiment, in order to ensure the structural symmetry of the swing limiting piece 2424b3, the extension part 2424b31 can be symmetrically arranged on the opposite sides of the swing limiting piece 2424b3, so that any one of the extension parts 2424b31 can be provided with the swing indicating piece 2424b32, which can effectively ensure the convenience of installation, and also can make the mass distribution symmetrical, which is beneficial to the balance of the rotating adjustment angle process. In the present embodiment, the limiting sensor 2424b4 can be an optical sensor or a contact switch, and correspondingly, the swing indicating piece 2424b32 can be a sheet metal structural piece, which comprises a first connecting plate body and a first pointer connected with the first connecting plate body; wherein the first pointer and the first connecting plate body are perpendicular to each other to form an L-shaped structure, so that the first connecting plate body can be connected with the upper side of the end of the extension part 2424b31 by using a threaded connecting piece, and then the first pointer is arranged towards the lower side, and further, the first pointer can block or abut against the limiting sensor 2424b4 when the first pointer is at the position of the limiting sensor 2424b4, so as to make the limiting sensor 2424b4 output a corresponding detection signal.

[0069] In combination Figure 17 and Figure 18As shown, according to an embodiment of the present application, the adsorption structure 2425 comprises: a positioning seat body 2425a, a hollow adsorption structure 2425b coaxially arranged with the positioning seat body 2425a, a hose quick connector 2425c arranged on the side of the positioning seat body 2425a; wherein the positioning seat body 2425a is provided with a hollow connection channel for connecting the hose quick connector 2425c and the hollow adsorption structure 2425b; in this embodiment, the positioning seat body 2425a is detachably connected with the rotating output end 2424b2 and / or the swing limiting part 2424b3. In this embodiment, the hollow adsorption structure 2425b can be provided as a hollow cylindrical structure as a whole, so that the hollow part can realize the connection with the connection channel on the positioning seat body 2425a. Further, the end of the hollow adsorption structure 2425b away from the positioning seat body 2425a can be provided as a structure with a larger diameter, so as to ensure the contact area of the adsorption contact position, which is more beneficial to improve the stability and reliability of adsorption.

[0070] Further, the hollow adsorption structure 2425b is detachably connected with the positioning seat body 2425a, so that different lengths and thicknesses of the hollow adsorption structure 2425b can be conveniently replaced to realize the adaptation of different products or product fixtures 22, thereby improving the use flexibility of the structure. Of course, the end part of the hollow adsorption structure 2425b with a larger diameter can also be detachable, so that different sizes of end part structures can be installed, so that the use flexibility of the structure is more effectively expanded.

[0071] In combination Figure 17 and Figure 18 As shown, according to an embodiment of the present application, the first X-axis translation structure 2421 comprises: a first X-axis platform 2421a, a first X-axis guide rail 2421b arranged on the lower side of the first X-axis platform 2421a, a first X-axis drive 2421c for driving the first X-axis platform 2421a to reciprocally move along the X-axis direction, and a first X-axis limiting sensor 2421d for limiting the movement range of the first X-axis platform 2421a; wherein the first X-axis drive 2421c is arranged side by side with the first X-axis platform 2421a. In this embodiment, the side of the first X-axis platform 2421a away from the first X-axis drive 2421c is provided with a first X-axis movement indicating part; further, two first X-axis limiting sensors 2421d are arranged at intervals, so as to limit the movable range of the first X-axis platform 2421a based on the first X-axis movement indicating part and the first X-axis limiting sensor 2421d.

[0072] Through the above arrangement, the first X-axis translation structure 2421 is effectively compressed in the vertical direction, thereby reducing the overall height of the correction assembly 242, making it more convenient to install under the product carrying table, and ensuring its convenience in use.

[0073] In the present embodiment, the first X-axis limit sensor 2421d can be an optical sensor or a contact switch, and the first X-axis movement indicator can be a sheet metal structure, which includes a second connecting plate body and a second pointer connected to the second connecting plate body. The second pointer and the second connecting plate body are perpendicular to each other to form an L-shaped structure. Thus, the second connecting plate body can be connected to the upper side of the first X-axis platform 2421a by a threaded connecting member, and the second pointer is arranged downward. When the second pointer is located at the position of the first X-axis limit sensor 2421d, it can block or abut against the first X-axis limit sensor 2421d, thereby outputting a corresponding detection signal.

[0074] In combination with FIGS. 1-3, Figure 17 and Figure 18 As shown in FIGS. 1-3, according to an embodiment of the present application, the first Y-axis translation structure 2422 includes a first Y-axis platform 2422A, a first Y-axis guide rail 2422B arranged on the lower side of the first Y-axis platform 2422A, a first Y-axis drive 2422C for driving the first Y-axis platform 2422A to move back and forth along the Y-axis direction, and a first Y-axis limit sensor 2422D for limiting the movement range of the first Y-axis platform 2422A. In the present embodiment, the first Y-axis drive 2422C is arranged below the first Y-axis platform 2422A. The first Y-axis platform 2422A is provided with a first Y-axis movement indicator on the side close to the first Y-axis drive 2422C. Further, two first Y-axis limit sensors 2422D are arranged in a spaced manner to limit the movable range of the first Y-axis platform 2422A based on the first Y-axis movement indicator and the first Y-axis limit sensor 2422D. In the present embodiment, the first Y-axis drive 2422C is arranged below the side of the first Y-axis platform 2422A away from the first mounting support 2423a of the first Z-axis translation structure 2423, so as to avoid structural interference during operation.

[0075] Through the above arrangement, the first Y-axis drive 2422C is arranged below the first Y-axis platform 2422A, which effectively utilizes the empty space below, so that the size of the present scheme in the horizontal direction is effectively suppressed, and the overall size of the present scheme is further reduced, which is more beneficial to the compact structure and easier arrangement in a small space, and the installation of the present scheme is more convenient.

[0076] In the present embodiment, the first X-axis guide rail 2421b and the first X-axis drive 2421c are connected to the upper side of the first Y-axis platform 2422A; the first X-axis limit sensor 2421d is arranged on the circumferential side of the first Y-axis platform 2422A; wherein the first X-axis limit sensor 2421d and the first X-axis moving indicator are matched, which will not be repeated here. In the present embodiment, the first Y-axis limit sensor 2422D can be an optical sensor or a contact switch, and correspondingly, the first Y-axis moving indicator can be a sheet metal structure, which includes a third connecting plate body and a third pointer connected to the third connecting plate body; wherein the third pointer and the third connecting plate body are perpendicular to each other to form an L-shaped structure, so that the third connecting plate body can be directly connected to the upper side of the first Y-axis platform 2422A by a threaded connecting piece, and the third pointer is arranged downward, and the first Y-axis limit sensor 2422D can be blocked or abutted by the third pointer when the third pointer is in the position of the first Y-axis limit sensor 2422D, so that the first Y-axis limit sensor 2422D outputs a corresponding detection signal.

[0077] In combination with Figure 1 and Figure 19 As shown in the drawings, according to an embodiment of the present application, the first Z-axis translation structure 2423 includes a first mounting support 2423a, a first Z-axis assembly 2423b slidably connected to the first mounting support 2423a, and a first Z-axis drive 2423c for driving the first Z-axis assembly 2423b to move reciprocally along the Z-axis direction, and a first Z-axis limit sensor 2423d for limiting the movement range of the first Z-axis assembly 2423b. In the present embodiment, the first Z-axis assembly 2423b includes a first Z-axis platform 2423b1, a first Z-axis guide rail 2423b2, and a first Z-axis moving indicator 2423b3.

[0078] In combination with Figure 1 and Figure 1As shown, according to one embodiment of the present invention, the inking module 26 includes a pad assembly 261 and an assembly adjustment support 262 for adjusting the position of the pad assembly 261. The assembly adjustment support 262 includes a second X-axis translation structure 2621 and a second Y-axis translation structure 2622. The second X-axis translation structure 2621 is supported on the second Y-axis translation structure 2622, and the pad assembly 261 is supported on the second X-axis translation structure 2621. This arrangement allows the assembly adjustment support 262 to flexibly adjust the pad assembly 261 to accommodate different pad lifting mechanisms 251a, thereby fully ensuring the accuracy of the pad printing pattern.

[0079] like Figure 1 As shown, according to one embodiment of the present invention, the pad printing device 2 further includes: a product inspection unit 28 and a pad inspection unit 29; wherein, along the running direction of the carrier unit 21, the product inspection unit 28 is arranged downstream of the stamping module 25 with a gap therebetween; in this embodiment, the product inspection unit 28 is a visual inspection device that captures images of the pad-printed product to inspect its surface quality to ensure the product yield. In this embodiment, the pad inspection unit 29 is arranged adjacent to the stamping module 25; specifically, the pad inspection unit 29 is located on the switching path of the pad lifting mechanism 251a. Thus, by capturing an image of the pad 251aa on the pad lifting mechanism 251a, the surface quality of the pad 251aa can be determined, thereby achieving early detection of defects in the pad 251aa, which is more beneficial to ensuring the product yield of this solution.

[0080] like ​ As shown, according to one embodiment of the present invention, multiple pad printing devices 2 can be set on the machine 1; in this embodiment, two pad printing devices 2 are symmetrically arranged, thereby enabling this solution to more efficiently implement pad printing processing of products.

[0081] like ​ As shown, according to one embodiment of the present invention, the pad printing machine further includes a control unit, which is respectively connected to the first position recognition module 3, the carrier unit 21, the jig coarse positioning module 23, the jig correction module 24, the stamping module 25, the inking module 26, and the pad cleaning module 27. In this embodiment, the control unit can be implemented using a combination of mature structures such as a PLC, a single-chip microcomputer, and an FPGA, and will not be further described here.

[0082] The above contents are merely examples of specific solutions of the present invention. For devices and structures not described in detail, it should be understood that they can be implemented by adopting general devices and methods available in the art.

[0083] The above merely describes one of the embodiments of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A pad printing machine, characterized in that: include: A machine (1), a pad printing device (2) arranged on the machine (1), and a first position recognition module (3) arranged at the edge of the machine (1); The pad printing device (2) comprises: a carrying unit (21), a product jig (22) detachably connected to the carrying unit (21), a jig coarse positioning module (23), a jig correction module (24) and an imprinting module (25) arranged in sequence along the running direction of the carrying unit (21), and an inking module (26) and a pad cleaning module (27) adjacent to the imprinting module (25); The fixture correction module (24) comprises: a first position recognition component (241), and a correction component (242) arranged below the first position recognition component (241); The stamping module (25) comprises: a glue head assembly (251), and a lifting assembly (252) arranged below the glue head assembly (251); The jig coarse positioning module (23), the correction component (242), and the lifting component (252) are respectively located below the carrying unit (21); The jig coarse positioning module (23) is used to coarsely position the position of the product jig (22); The first position recognition component (241) is used to collect the posture deviation of the product jig (22) or the product on the product jig (22), and the correction component (242) performs posture correction based on the posture deviation; The lifting component (252) is used to lift the product jig (22), and the rubber head component (251) is used to stamp the product on the product jig (22).

2. The pad printing machine according to claim 1, characterized in that The glue head assembly (251) is provided with at least one glue head lifting mechanism (251a); The rubber head lifting mechanism (251a) is provided with a rubber head (251aa) for stamping; The lifting assembly (252) is provided with a jig connector (252a) for connecting to the product jig (22) and a pressure sensor (252b) for sensing the product pressure on the product jig (22); The lifting component (252) lifts the product jig (22) based on the jig connector (252a) to separate the product jig (22) from the carrying unit (21); The glue head lifting mechanism (251a) imprints the product on the product jig (22) based on the glue head (251aa), and controls the pressure of the glue head (251aa) based on the pressure feedback from the pressure sensor (252b).

3. The pad printing machine according to claim 2, characterized in that: The glue head assembly (251) further includes: a first rotation support (251b); The first rotating support (251b) is connected to a plurality of the glue head lifting mechanisms (251a), and the plurality of the glue head lifting mechanisms (251a) are arranged at equal intervals on the first rotating support (251b); The glue head lifting mechanism (251a) comprises: a first driver (251a1), a first transmission (251a2), a first two-dimensional adjustment platform (251a3) and a glue head mounting base (251a4); The first driver (251a1), the first transmission (251a2), the first two-dimensional adjustment platform (251a3) and the rubber head mounting base (251a4) are installed in sequence from top to bottom; The first driver (251a1) drives the first two-dimensional adjustment platform (251a3) and the glue head mounting base (251a4) to move in the vertical direction through the first transmission device (251a2).

4. The pad printing machine according to claim 3, characterized in that: The lifting assembly (252) further includes: a second driver (252c), a second transmission (252d) and a connector mounting seat (252e); The second driver (252c), the second transmission (252d), and the connector mounting seat (252e) are connected in sequence from bottom to top; The second driver (252c) drives the connector mounting seat (252e) to move in a vertical direction via the second transmission (252d); The jig connector (252a) is detachably connected to the connector mounting seat (252e).

5. The pad printing machine according to claim 4, characterized in that: The carrying unit (21) comprises: a second rotating support (211), a jig carrying plate (212) connected to a rotating shaft of the second rotating support (211), and a vacuum source connecting assembly (213) mounted on the jig carrying plate (212); The jig carrier plate (212) is provided with a plurality of jig mounting slots (2121) for mounting the product jig (22); A plurality of electromagnets (2121a) for adsorbing the product jig (22) and a contact switch mechanism (2121b) for controlling the on and off of the electromagnets (2121a) are embedded in the bottom surface of the jig installation slot (2121), and a first channel and a second channel are provided on the bottom surface of the jig installation slot (2121); The jig coarse positioning module (23) passes through the first channel to perform coarse positioning on the product jig (22); The correction component (242) and the lifting component (252) are respectively connected to the product fixture (22) through the second channel.

6. The pad printing machine according to claim 5, characterized in that: The product fixture (22) includes: a fixture body (221); The upper side of the fixture body (221) is provided with at least one station for product installation; The workstation is provided with an adsorption groove (221a) for adsorbing products; A vacuum channel (221b) is provided inside the jig body (221), one end of the vacuum channel (221b) is connected to the adsorption groove (221a), and the other end of the vacuum channel (221b) forms a connection opening (221c) on the circumferential side of the jig body (221) for connecting to the vacuum source connection assembly (213); The circumferential side surface of the jig body (221) is provided with a plurality of coarse positioning grooves (221d) for the jig coarse positioning module (23), and the middle of the jig body (221) is provided with a middle positioning hole (221e) nested and connected to the jig connector (252a); The coarse positioning groove (221d) is arranged corresponding to a first channel provided on the bottom surface of the jig installation groove (2121), and the middle positioning hole (221e) is arranged corresponding to a second channel provided on the bottom surface of the jig installation groove (2121).

7. The pad printing machine according to claim 6, characterized in that: The fixture body (221) is further provided with a linkage control mechanism (221f); The arrangement direction of the linkage control mechanism (221f) is consistent with the radial direction of the middle positioning hole (221e); The linkage control mechanism (221f) comprises: a linkage telescopic rod (221f1) and a linkage compression spring (221f2); The linked telescopic rod (221f1) comprises a rod body portion (221f11), a supporting portion (221f12) and a toggle portion (221f13); Along the axial direction of the rod body part (221f11), the abutting part (221f12) is provided at one end of the rod body part (221f11), and the shifting part (221f13) is provided close to the radial outer side surface of the other end of the rod body part (221f11); The abutting portion (221f12) protrudes from the inner side surface of the middle positioning hole (221e), and the shifting portion (221f13) protrudes from the lower side surface of the fixture body (221); When the jig connector (252a) is nested with the middle positioning hole (221e), the abutting portion (221f12) retracts, and the toggle portion (221f13) presses against the contact switch mechanism (2121b).

8. The pad printing machine according to claim 7, characterized in that: The jig coarse positioning module (23) comprises: a third driver (231), a third transmission (232) and a clamping mechanism (233); The third driver (231), the third transmission (232), and the clamping mechanism (233) are connected in sequence from bottom to top; The clamping mechanism (233) comprises: a clamping base (233a), a clamping assembly (233b) slidably connected to the clamping base (233a), and a clamping drive (233c) connected to the clamping assembly (233b); The clamping jaw assembly (233b) is provided in plurality; The clamping jaw assembly (233b) comprises: two symmetrical clamping jaws (233b1) that are movable relative to each other; The clamping jaw (233b1) comprises a horizontal connecting arm (233b11), a fixture positioning rod (233b12) and a sliding connecting member (233b13) respectively connected to opposite ends of the horizontal connecting arm (233b11); The jig positioning rod (233b12) is vertically mounted on the upper side of the horizontal connecting arm (233b11), and the sliding connection member (233b13) is connected to the lower side of the horizontal connecting arm (233b11); The sliding connection member (233b13) is slidably connected to the clamping jaw base (233a); The clamping jaw drive (233c) is connected to the sliding connection member (233b13); The sliding direction of the sliding connection member (233b13) relative to the clamping claw base (233a) is consistent with the length direction of the horizontal connection arm (233b11).

9. The pad printing machine according to claim 8, characterized in that: The correction component (242) comprises: a first X-axis translation structure (2421), a first Y-axis translation structure (2422), a first Z-axis translation structure (2423), an angle adjustment structure (2424), and an adsorption structure (2425); Along the vertical direction, the first X-axis translation structure (2421), the first Y-axis translation structure (2422), and the first Z-axis translation structure (2423) are arranged in sequence; The angle adjustment structure (2424) is mounted on the first X-axis translation structure (2421); The adsorption structure (2425) is supported on the angle adjustment structure (2424); The adsorption structure (2425) is used to adsorb and fix the product jig (22) or the product on the product jig (22); The axial direction of the angle adjustment structure (2424) is consistent with the moving direction of the first Z-axis translation structure (2423), and the angle adjustment structure (2424) is used to drive the adsorption structure (2425) to swing within a preset angle range.

10. The pad printing machine according to claim 9, characterized in that The inking module (26) comprises: a pad printing plate assembly (261) and an assembly adjustment support (262) for adjusting the position of the pad printing plate assembly (261); The component adjustment support (262) includes: a second X-axis translation structure (2621) and a second Y-axis translation structure (2622); The second X-axis translation structure (2621) is supported on the second Y-axis translation structure (2622), and the printing plate assembly (261) is supported on the second X-axis translation structure (2621); The pad printing device (2) further includes: a product detection unit (28) and a pad detection unit (29); Along the running direction of the carrying unit (21), the product detection unit (28) is spaced apart from the stamping module (25) and is arranged downstream of the stamping module (25); The glue head detection unit (29) is arranged adjacent to the stamping module (25); The pad printing device (2) can be arranged in plurality on the machine (1).

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