Pad printing device

Abstract

The utility model discloses a pad printing device, which relates to the technical field of pad printing machines and comprises a machine table. The machine table is provided with a detection area and a printing area; the transfer printing jig is movably arranged on the machine table; the detection mechanism is used for detecting a workpiece on the transfer printing jig; the material throwing mechanism comprises a material throwing carrying table, a collecting disc and a first driving assembly which are arranged in the detection area; the transfer mechanism is used for transferring defective workpieces on the transfer printing jig to the throwing mechanism; the printing mechanism is used for printing the workpiece on the transfer printing jig; the technical scheme provided by the utility model has the technical effects that the detection mechanism detects the workpieces on the transfer printing jig so as to divide the workpieces on the transfer printing jig into good workpieces and defective workpieces, the good workpieces continue to be conveyed to the printing mechanism for printing, the defective workpieces are transferred to the material throwing mechanism by the transfer mechanism, and then the workpieces on the transfer printing jig are conveyed to the printing mechanism for printing. And therefore, the defective product rate of the workpieces is reduced, and the production efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of pad printing machine technology, and in particular to a pad printing device. Background Technology

[0002] Pad printing equipment can achieve high-quality printing of patterns or text on various complex curved surfaces or uneven workpieces, thus making the workpieces more aesthetically pleasing. The pad printing equipment works by first etching the designed pattern onto a printing plate, then using a printing head to pick up ink from the plate and press it onto the workpiece surface, thus completing the printing process. However, existing pad printing equipment has a high defect rate, reducing production efficiency and failing to meet user needs. Utility Model Content

[0003] The main purpose of this invention is to provide a pad printing device that aims to reduce the defect rate of workpieces and improve workpiece production efficiency.

[0004] To achieve the above objectives, the present invention proposes a pad printing device, comprising a machine base and a pad printing fixture, a detection mechanism, a transfer mechanism, a ejector mechanism, a printing mechanism, and a controller disposed on the machine base. The controller is electrically connected to the detection mechanism, the transfer mechanism, the ejector mechanism, and the printing mechanism, respectively. The machine base has a detection area and a printing area arranged along a first direction. The pad printing fixture is movably disposed on the machine base along the first direction to drive the workpiece to reciprocate between the detection area and the printing area. The detection mechanism is located above the pad printing fixture and is used to detect the workpiece on the pad printing fixture to distinguish the workpieces on the pad printing fixture. The system includes good and defective workpieces; the throwing mechanism includes a throwing platform, a collecting tray, and a first driving component located in the detection area. The collecting tray is located on the throwing platform, and the first driving component is connected to the throwing platform. The first driving component is located on one side of the pad printing fixture and is used to drive the collecting tray on the throwing platform to reciprocate in the unloading area of ​​the pad printing fixture and the machine. The transfer mechanism is used to transfer defective workpieces from the pad printing fixture to the throwing mechanism. The printing mechanism is located in the printing area and is used to print on the workpieces from the pad printing fixture, wherein the first direction and the second direction intersect.

[0005] In one embodiment, the machine tool is provided with a first mounting base, and the detection mechanism includes a first connecting frame and a camera assembly. The first connecting frame is connected to the first mounting base, and the camera assembly is disposed on the first connecting frame. The camera assembly is used to detect the workpiece on the pad printing fixture.

[0006] In one embodiment, the camera assembly includes a camera and a telecentric lens, the camera being connected to the first connecting bracket, and the telecentric lens being connected to the end of the camera closer to the pad printing fixture.

[0007] In one embodiment, the printing mechanism includes a printing component, which includes a second mounting base, a glue head assembly, and a second drive assembly. The second drive assembly is disposed on the machine base and is driven to connect to the second mounting base. The second drive assembly is used to drive the second mounting base to move along a third direction. The glue head assembly is detachably connected to the second mounting base. The first direction, the second direction, and the third direction intersect each other.

[0008] In one embodiment, the rubber head assembly includes a connecting plate and a rubber head, the connecting plate being connected to the second mounting base, and the rubber head having a connecting portion that is detachably connected to the connecting plate.

[0009] In one embodiment, the pad printing fixture includes a third driving component, a first base, and a transparent stage. The third driving component is located in the detection area, the transparent stage has a placement area, and a second slider is provided on the side of the first base opposite to the placement area. The third driving component drives the second slider to move the first base along the first direction.

[0010] In one embodiment, the pad printing fixture further includes a fine-tuning component and a light source. The fine-tuning component is disposed between the first base and the transparent stage, and is driven to connect to the transparent stage. The light source is connected to the transparent stage and is located below the transparent stage.

[0011] In one embodiment, the printing mechanism further includes a tape removal assembly, which includes a mounting plate, a guide rail, a second connecting frame, and a fourth drive assembly. The second connecting frame is connected to the mounting plate, the guide rail is disposed within the machine base, the mounting plate is movably disposed on the guide rail along the first direction, and the fourth drive assembly is driven to connect to the second connecting frame. The fourth drive assembly is used to drive the mounting plate to move along the first direction, and the mounting plate is used to install tape.

[0012] In one embodiment, the machine tool is provided with a third mounting base, and the printing mechanism further includes a heating component located between the pad printing fixture and the printing head assembly. The heating component includes an annular air outlet and a connector. The annular air outlet is connected to the third mounting base through the connector. The annular air outlet is used to blow hot air to heat the pad printing fixture and the printing head assembly respectively.

[0013] In one embodiment, the pad printing device further includes an air inlet mechanism. The annular air outlet includes a heating element, a second base, and a top cover. The heating element is disposed inside the second base. The second base has an air inlet channel. The air inlet mechanism is connected to the air inlet channel. The top cover is disposed on the second base. An air outlet communicating with the air inlet channel is formed between the top cover and the second base.

[0014] The technical solution of this utility model uses an inspection mechanism to inspect the workpieces on the pad printing fixture, thereby distinguishing the workpieces on the pad printing fixture into good workpieces and defective workpieces. Good workpieces continue to be sent to the printing mechanism for printing, while defective workpieces are transferred to the throwing mechanism by the transfer mechanism. When the collection tray is full of defective workpieces, the first drive component drives the collection tray to move to the unloading area of ​​the machine, which makes it convenient for the operator to pick up, thereby avoiding printing on defective workpieces, reducing the defect rate of workpieces, and improving production efficiency. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0016] Figure 1 A schematic diagram of an embodiment of the pad printing device provided by this utility model;

[0017] Figure 2 A schematic diagram of another aspect of an embodiment of the pad printing device provided by this utility model;

[0018] Figure 3 for Figure 2 Enlarged view of mark A;

[0019] Figure 4 A schematic diagram of the detection mechanism in one embodiment of the pad printing device provided by this utility model;

[0020] Figure 5 A schematic diagram of the structure of a pad printing fixture in one embodiment of the pad printing device provided by this utility model;

[0021] Figure 6 A schematic diagram of the adhesive removal component in one embodiment of the pad printing device provided by this utility model;

[0022] Figure 7 A schematic diagram of the heating component in one embodiment of the pad printing device provided by this utility model;

[0023] Figure 8 A schematic diagram of the heating component in another embodiment of the pad printing device provided by this utility model.

[0024] Explanation of icon numbers:

[0025] 1. Machine base; 11. Inspection area; 12. Printing area; 13. First mounting base; 14. Third mounting base; 2. Pad printing fixture; 21. Placement area; 22. Third drive assembly; 23. First base; 231. Second slider; 24. Transparent stage; 25. Fine-tuning assembly; 3. Inspection mechanism; 31. First connecting frame; 32. Camera; 33. Telecentric lens; 4. Material throwing mechanism; 41. Material throwing stage; 42. First drive assembly; 5. Transfer mechanism; 6. Printing mechanism; 61. Printing assembly; 611. Second mounting base; 612. Adhesive head assembly; 6121. Connecting plate; 6122. Adhesive head; 6123. Connecting part; 613. Second drive assembly; 62. Adhesive cleaning assembly; 621. Mounting plate; 622. Guide rail; 623. Second connecting frame; 624. Fourth drive assembly; 63. Heating assembly; 631. Annular air outlet; 6311. Heating element; 6312. Second base; 6313. Top cover; 6314. Air inlet channel; 6315. Air outlet; 632. Connecting part.

[0026] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0028] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0029] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0030] This utility model proposes a pad printing device.

[0031] Please see Figure 1 and Figure 2 In one embodiment of this utility model, the pad printing device includes a machine base 1 and a pad printing fixture 2, a detection mechanism 3, a transfer mechanism 5, a ejector mechanism 4, a printing mechanism 6, and a controller disposed on the machine base 1. The controller is electrically connected to the detection mechanism 3, the transfer mechanism 5, the ejector mechanism 4, and the printing mechanism 6, respectively. The machine base 1 has a detection area 11 and a printing area 12 arranged along a first direction. The pad printing fixture 2 is movably disposed on the machine base 1 along the first direction to drive the workpiece to reciprocate between the detection area 11 and the printing area 12. The detection mechanism 3 is located above the pad printing fixture 2 and is used to detect the workpieces on the pad printing fixture 2 to classify the workpieces on the pad printing fixture 2 as good products. The workpiece and defective workpiece; the throwing mechanism 4 includes a throwing platform 41, a collecting tray, and a first driving component 42 disposed in the detection area 11. The collecting tray is disposed on the throwing platform 41. The first driving component 42 is connected to the throwing platform 41 and is located on one side of the pad printing fixture 2. The first driving component 42 is used to drive the collecting tray on the throwing platform 41 to reciprocate in the unloading area of ​​the pad printing fixture 2 and the machine table 1; the transfer mechanism 5 is used to transfer defective workpieces on the pad printing fixture 2 to the throwing mechanism 4; the printing mechanism 6 is located in the printing area 12 and is used to print on the workpieces on the pad printing fixture 2, wherein the first direction and the second direction intersect.

[0032] The technical solution of this utility model uses an inspection mechanism 3 to inspect the workpieces on the pad printing fixture 2, thereby distinguishing the workpieces on the pad printing fixture 2 into good workpieces and defective workpieces. Good workpieces are sent to the printing mechanism 6 for printing, while defective workpieces are transferred by the transfer mechanism 5 to the throwing mechanism 4. When the collection tray is full of defective workpieces, the first drive component 42 drives the collection tray to move to the unloading area of ​​the machine 1, which makes it convenient for the operator to pick up the workpieces, thereby avoiding printing on defective workpieces, reducing the defect rate of workpieces, and improving production efficiency.

[0033] In this embodiment, to facilitate faster printing of workpieces after inspection, the machine base 1 has an inspection area 11 and a printing area 12 arranged along a first direction. The pad printing fixture 2 is movably mounted on the machine base 1 along the first direction, thereby facilitating the reciprocating movement of workpieces between the inspection area 11 and the printing area 12. This application employs an inspection mechanism 3 positioned above the pad printing fixture 2, enabling the inspection mechanism 3 to more clearly inspect the workpieces and more conveniently distinguish between good and defective workpieces on the pad printing fixture 2. To facilitate the removal of defective workpieces by operators, this application uses a first drive assembly 42 to drive the connected throwing platform 41. When the collection tray (unmarked) is full of defective workpieces, the controller controls the first drive assembly 42 to move the collection tray to the unloading area of ​​the machine base 1, making it convenient for operators to remove the collection tray. The first driving assembly 42 may include a first driving member and a first transmission member. The first transmission member is drivingly connected to the throwing platform 41, and the first driving member is drivingly connected to the first transmission member, thereby facilitating the rotation of the first transmission member by the first driving member, which in turn drives the throwing platform 41 and the collecting tray to reciprocate in the unloading area of ​​the pad printing fixture 2 and the machine base 1. This application uses a transfer mechanism 5 to transfer defective workpieces from the pad printing fixture 2 to the collecting tray, thus making it easier to centrally process defective workpieces. The detection mechanism 3 may use a camera assembly to detect the workpieces, and the detection results of the camera assembly are more accurate.

[0034] like Figure 1 and Figure 4 As shown, the machine base 1 is provided with a first mounting base 13, and the detection mechanism 3 includes a first connecting frame 31 and a camera assembly. The first connecting frame 31 is connected to the first mounting base 13, and the camera assembly is disposed on the first connecting frame 31. The camera assembly is used to detect the workpiece on the pad printing fixture 2.

[0035] In this embodiment, the camera assembly is mounted on the first mounting base 13 via the first connecting bracket 31, thereby enabling the camera assembly to acquire image signals from the workpiece more stably. The camera assembly may include a camera 32, which can locate a specified contour center on the workpiece, or the camera 32 can also locate the contour center of a circular hole on the workpiece, thereby identifying whether the workpiece is a defective workpiece, thus facilitating subsequent processing of the workpiece. The camera 32 may be a 2000W pixel CCD precision alignment camera, thereby improving the accuracy of workpiece identification.

[0036] like Figure 1 and Figure 4 As shown, the camera assembly includes a camera 32 and a telecentric lens 33. The camera 32 is connected to the first connecting bracket 31, and the telecentric lens 33 is connected to the end of the camera 32 that is closer to the pad printing fixture 2.

[0037] In this embodiment, the camera 32 can locate the center of a specified contour on the workpiece, or the camera 32 can also locate the center of the contour of a circular hole on the workpiece, thereby identifying whether the workpiece is a defective workpiece, thus facilitating subsequent processing of the workpiece. The camera 32 can be a 2000W pixel CCD precision alignment camera, thereby improving the accuracy of the camera 32 in identifying the workpiece. This application uses a telecentric lens 33 to assist the camera 32. The telecentric lens 33 can correct the parallax problem in traditional industrial lenses and maintain a constant image magnification within a certain object distance range, thereby improving the accuracy of the camera 32 in detecting and identifying the workpiece.

[0038] like Figures 1 to 3 As shown, the printing mechanism 6 includes a printing component 61, which includes a second mounting base 611, a glue head assembly 612, and a second drive assembly 613. The second drive assembly 613 is mounted on the machine base 1 and is driven to connect to the second mounting base 611. The second drive assembly 613 is used to drive the second mounting base 611 to move along a third direction. The glue head assembly 612 is detachably connected to the second mounting base 611. The first direction, the second direction, and the third direction intersect each other.

[0039] In this embodiment, to improve the stability of the printing assembly 61 on the machine base 1, a second drive assembly 613 is provided on the machine base 1. The second drive assembly 613 drives and connects to the second mounting base 611, and the ink head assembly 612 is detachably connected to the second mounting base 611. This allows the second drive assembly 613 to more stably drive the second mounting base 611 and the ink head assembly 612 to move in a third direction. The ink head assembly 612 is used for ink application and for processes such as pressure holding and printing on the workpiece.

[0040] In this embodiment, the second drive assembly 613 may include a first slide rail (unmarked) and a second drive member (unmarked), with the first slide rail mounted on the machine base 1. The printing assembly 61 also includes a first slider (unmarked), which is located on the side of the second mounting base 611 opposite to the glue head assembly 612. The second drive member drives the second mounting base 611 so that the second mounting base 611 slides along the first slide rail via the first slider, thereby facilitating the movement of the second mounting base 611 in a third direction.

[0041] like Figure 3 As shown, the glue head assembly 612 includes a connecting plate 6121 and a glue head 6122. The connecting plate 6121 is connected to the second mounting base 611, and the glue head 6122 is provided with a connecting part 6123, which is detachably connected to the connecting plate 6121.

[0042] In this embodiment, the rubber head assembly 612 also includes fasteners, which may be fastening screws or bolts, etc. The connecting part 6123 is detachably connected to the connecting plate 6121 through the fasteners, thereby improving the stability of the connection between the rubber head 6122 and the connecting plate 6121, and making it easier to replace the rubber head 6122.

[0043] like Figure 1 and Figure 5 As shown, the pad printing fixture 2 includes a third driving component 22, a first base 23, and a transparent stage 24. The third driving component 22 is located in the detection area 11. The transparent stage 24 has a placement area 21 for placing workpieces. The first base 23 is provided with a second slider 231 on the side opposite to the placement area 21. The third driving component 22 drives the second slider 231 to move the first base 23 along the first direction.

[0044] In this embodiment, the present application sets the pad printing fixture 2 to use a transparent stage 24 to load the workpiece, thereby better cooperating with the camera component to detect the workpiece, thereby making the photos taken by the camera component clearer and improving the detection accuracy of the camera component.

[0045] In this embodiment, the third drive assembly 22 may include a second slide rail (unmarked) and a third drive member (unmarked). The pad printing fixture 2 also includes a second slider 231 (unmarked). The second slider 231 is disposed on the side of the first base 23 away from the placement area 21. The third drive member drives and connects to the second slider 231 so that the first base 23 is slidably connected to the second slide rail through the second slider 231, thereby making it easier for the pad printing fixture 2 to move along the first direction.

[0046] like Figure 1 and Figure 5As shown, the pad printing fixture 2 also includes a fine-tuning component 25 and a light source. The fine-tuning component 25 is disposed between the first base 23 and the transparent stage 24. The fine-tuning component 25 is driven to connect to the transparent stage 24. The light source is connected to the transparent stage 24 and is located below the transparent stage 24.

[0047] In this embodiment, the present application uses a light source to provide illumination to the transparent stage 24 and the camera assembly, so that the workpiece can better display its own structure under the illumination of the light source, thereby improving the clarity of the image captured by the camera assembly.

[0048] In this embodiment, the fine-tuning component 25 may include a fifth drive member (unmarked) and a sixth drive member (unmarked). The fifth drive member and the sixth drive member drive the transparent stage 24. The fifth drive member is used to drive the transparent stage 24 to move ±3 mm along the X-axis direction, and the sixth drive member is used to drive the transparent stage 24 to move ±3 mm along the Y-axis direction, thereby fine-tuning the position of the transparent stage 24.

[0049] like Figure 6 As shown, the printing mechanism 6 further includes a tape removal assembly 62, which includes a mounting plate 621, a guide rail 622, a second connecting frame 623, and a fourth drive assembly 624. The second connecting frame 623 is connected to the mounting plate 621. The guide rail 622 is disposed within the machine base 1. The mounting plate 621 is movably disposed on the guide rail 622 along the first direction. The fourth drive assembly 624 drives the second connecting frame 623 and is used to drive the mounting plate 621 to move along the first direction. The mounting plate 621 is used to install tape.

[0050] In this embodiment, the machine base 1 is provided with a third mounting base 14, and the fourth drive assembly 624 may include a fourth drive member (not marked). The fourth drive member is disposed on the third mounting base 14 and drives the second connecting frame 623. The fourth drive member can drive the second connecting frame 623 and the mounting plate 621 to move along the guide rail 622, thereby driving the mounting plate 621 to move in the first direction, thus facilitating the displacement of the mounting plate 621 to below the printing assembly 61. Adhesive tape can be installed on the mounting plate 621. When the printing assembly 61 needs to be cleaned, the printing assembly 61 contacts the adhesive tape so that the tape removes the ink on the printing assembly 61, thus facilitating the printing assembly 61 to perform the next printing.

[0051] In this embodiment, the printing mechanism 6 further includes an ink supply assembly (unmarked) for the ink supply head 6122 to pick up ink. The third mounting base 14 and the pad printing fixture 2 are spaced apart along a first direction. The ink supply assembly includes a pad printing plate (unmarked) and an ink cup (unmarked). The pad printing plate (unmarked) is movably mounted on the third mounting base 14 along the first direction, and the ink cup is mounted on the third mounting base 14, with the ink cup located above the pad printing plate.

[0052] like Figure 7 and Figure 8 As shown, the machine base 1 is provided with a third mounting base 14, and the printing mechanism 6 further includes a heating component 63. The heating component 63 is located between the pad printing fixture 2 and the printing head assembly 612. The heating component 63 includes an annular air outlet 631 and a connector 632. The annular air outlet 631 is connected to the third mounting base 14 through the connector 632. The annular air outlet 631 is used to blow hot air to heat the pad printing fixture 2 and the printing head assembly 612 respectively.

[0053] In this embodiment, the annular air outlet 631 is mounted on the machine base 1 via the third mounting base 14, thereby improving the stability of the connection between the annular air outlet 631 and the machine base 1. The annular air outlet 631 is also mounted on the third mounting base 14 via the connector 632, further improving the stability of the connection between the annular air outlet 631 and the third mounting base 14. By positioning the heating assembly 63 between the pad printing fixture 2 and the printing head assembly 612, the heating assembly 63 can more easily heat the printing head assembly 612 and the workpiece separately, thereby improving the printing effect of the printing assembly 61 on the workpiece. The annular air outlet 631 allows for more uniform airflow, thus improving the heating efficiency of the heating assembly 63 on both the workpiece and the printing assembly 61.

[0054] like Figure 7 and Figure 8 As shown, the pad printing device further includes an air inlet mechanism. The annular air outlet 631 includes a heating element 6311, a second base 6312, and a top cover 6313. The heating element 6311 is disposed inside the second base 6312. The second base 6312 has an air inlet channel 6314. The air inlet mechanism communicates with the air inlet channel 6314. The top cover 6313 covers the second base 6312. An air outlet 6315 communicating with the air inlet channel 6314 is formed between the top cover 6313 and the second base 6312.

[0055] In this embodiment, the air intake mechanism (not labeled) can be configured as an air compressor or other device capable of delivering air. The air intake mechanism generates hot air through the air intake channel 6314 and the heating element 6311, and blows it onto the workpiece and the printing head assembly 612 through the air outlet 6315. This makes it easier for the heating element 63 to heat the printing assembly 61 and the workpiece separately, thereby improving the printing effect of the printing element 61 on the workpiece.

[0056] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. Pad printing apparatus, characterized in that The application relates to a printing device, which comprises a machine table and a pad printing jig, a detection mechanism, a transfer mechanism, a material throwing mechanism, a printing mechanism and a controller, wherein the controller is electrically connected with the detection mechanism, the transfer mechanism, the material throwing mechanism and the printing mechanism respectively. The machine table has a detection area and a printing area arranged along a first direction. The pad printing jig is movably arranged on the machine table along the first direction, and is used for driving a workpiece to reciprocate between the detection area and the printing area. The detection mechanism is located above the pad printing jig, and is used for detecting the workpiece on the pad printing jig to distinguish the workpiece on the pad printing jig into good products and defective products. The material throwing mechanism comprises a material throwing platform arranged in the detection area, a collecting disc arranged on the material throwing platform and a first driving assembly drivingly connected with the material throwing platform. The transfer mechanism is used for transferring the defective products on the pad printing jig to the material throwing mechanism. The printing mechanism is located in the printing area, and is used for printing the workpiece on the pad printing jig. The machine table is provided with a first mounting seat, the detection mechanism comprises a first connecting frame and a camera assembly, the first connecting frame is connected with the first mounting seat, and the camera assembly is arranged on the first connecting frame and used for detecting the workpiece on the pad printing jig.

2. Pad printing apparatus according to claim 1, wherein The camera assembly comprises a camera and a telecentric lens, the camera is connected with the first connecting frame, and the telecentric lens is connected with the camera and closer to the pad printing jig.

3. Pad printing apparatus according to claim 2, wherein The printing mechanism comprises a printing assembly, the printing assembly comprises a second mounting seat, a rubber head assembly and a second driving assembly, the second driving assembly is arranged on the machine table and drivingly connected with the second mounting seat, and is used for driving the second mounting seat to move along a third direction.

4. The pad printing apparatus of claim 1, wherein The rubber head assembly is detachably connected with the second mounting seat.

5. Pad printing apparatus according to claim 4, wherein The pad printing jig comprises a third driving assembly, a first base and a transparent platform, the third driving assembly is located in the detection area, the transparent platform has a placing area, and the first base is provided with a second sliding block on a side away from the placing area.

6. The pad printing apparatus of claim 1, wherein The third driving assembly is drivingly connected with the second sliding block to drive the first base to move along the first direction.

7. Pad printing apparatus according to claim 6, wherein The pad printing jig further comprises a fine adjustment assembly and a light source element, the fine adjustment assembly is arranged between the first base and the transparent platform, the fine adjustment assembly is drivingly connected to the transparent platform, the light source element is connected to the transparent platform, and the light source element is located below the transparent platform.

8. The pad printing apparatus of claim 1, wherein The printing mechanism further comprises a glue cleaning assembly, the glue cleaning assembly comprises a mounting plate, a guide rail, a second connecting frame and a fourth driving assembly, the second connecting frame is connected to the mounting plate, the guide rail is arranged in the machine table, the mounting plate is movably arranged along the first direction on the guide rail, the fourth driving assembly is drivingly connected to the second connecting frame, the fourth driving assembly is used for driving the mounting plate to move along the first direction, and the mounting plate is used for mounting adhesive tape.

9. The pad printing apparatus of claim 5 wherein, The machine table is provided with a third mounting seat, the printing mechanism further comprises a heating assembly, the heating assembly is located between the pad printing jig and the glue head assembly, the heating assembly comprises an annular air outlet element and a connecting element, the annular air outlet element is connected to the third mounting seat through the connecting element, and the annular air outlet element is used for blowing hot air to heat the pad printing jig and the glue head assembly respectively.

10. Pad printing apparatus according to claim 9, wherein The pad printing device further comprises an air inlet mechanism, the annular air outlet element comprises a heating element, a second base and a top cover, the heating element is arranged in the second base, the second base has an air inlet channel, the air inlet mechanism is communicated with the air inlet channel, the top cover is arranged on the second base, and an air outlet opening communicated with the air inlet channel is formed between the top cover and the second base.

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