Lifting device for license plate silk-screen printing

Abstract

The utility model provides a lifting device for license plate silk-screen printing, comprising: a frame body, a bearing platform for bearing a tray is arranged on the frame body, and a plurality of license plates are arranged in the tray from bottom to top; the lifting mechanism is arranged on the frame body and comprises a rotating shaft and two first chains; the rotating shaft is rotationally arranged on the lower section of the frame body, two first chain wheels are arranged at the two ends of the rotating shaft, and a second chain wheel rotationally connected with the frame body is arranged over each first chain wheel. Each first chain is arranged on the corresponding first chain wheel and second chain wheel, and the two ends of each first chain are connected with the upper end and the lower end of a connecting piece arranged on the bearing platform respectively. The automatic lifting process of the license plate in the tray and the stability of the position of the lifted license plate are improved, the license plate lifting process is convenient, time-saving and labor-saving, and therefore the efficiency of screen printing of the license plate is improved.

Description

Technical Field

[0001] The present application relates to the technical field of license plate screen printing, and in particular to a lifting device for license plate screen printing. Background Art

[0002] Screen printing refers to using a silk screen as a base and making a screen printing plate with images through a photosensitive platemaking method. Screen printing consists of five major elements: screen printing plate, scraper, ink, printing table and substrate. Printing is based on the basic principle that the mesh holes of the image part of the screen printing plate can pass the ink, while the mesh holes of the non-image part cannot pass the ink. When printing, pour ink on one end of the screen printing plate, use a scraper to apply a certain pressure to the ink part on the screen printing plate, and move at a constant speed toward the other end of the screen printing plate. During the movement, the ink is squeezed from the mesh holes of the image part to the substrate by the scraper.

[0003] In the process of making license plates using screen printing technology, manual loading is required. During the manual loading process, the license plates in the material box are manually stacked from bottom to top on a tray, and then the staff carries the tray to a platform for separating and detecting the license plates. The above process requires the staff to constantly bend over, stand up, etc., and the license plates stacked from bottom to top on the tray and the weight of the entire tray are relatively large. This is not only cumbersome to operate, but also time-consuming and labor-intensive, resulting in low screen printing efficiency for license plates. Utility Model Content

[0004] The present application provides a lifting device for license plate screen printing, which is used to solve the technical problems recorded in the above background technology.

[0005] In order to solve the above technical problems, this application adopts the following technical solutions:

[0006] The present application provides a lifting device for license plate screen printing, comprising:

[0007] A frame, wherein the frame is provided with a bearing platform for receiving a tray, and a plurality of license plates are arranged in the tray from bottom to top;

[0008] A lifting mechanism, the lifting mechanism is arranged on the frame and includes a rotating shaft and two first chains; the rotating shaft is rotatably arranged in the lower section of the frame and two first sprockets are arranged thereon at intervals, and a second sprocket rotatably connected to the frame is arranged directly above each of the first sprockets, and each of the first chains is arranged on the first sprocket and the second sprocket corresponding thereto and both ends of the first chain are respectively connected to the upper and lower ends of a connecting member arranged on the frame.

[0009] Optionally, the lifting device for plate screen printing further comprises a position detection component for detecting whether the topmost plate on the tray is lifted to a preset position, the position detection component being located above the carrying platform;

[0010] The position detection assembly includes a position sensor and a contact rod;

[0011] The position sensor is arranged on the frame, and the contact rod is hinged on the frame;

[0012] When the position of the topmost license plate on the tray is equal to the preset position, the topmost license plate abuts against the bottom end of the contact rod to rotate the contact rod so that the top end of the contact rod is separated from the position sensor; when the position of the topmost license plate on the tray is lower than the preset position, the top end of the contact rod contacts the position sensor.

[0013] Optionally, one end of the rotating shaft is driven by a driving member;

[0014] The driving member comprises a driving motor and a second chain;

[0015] One end of the driving motor close to the rotating shaft is arranged on the frame and electrically connected to the position sensor. The output shaft of the driving motor and the rotating shaft are respectively provided with a third sprocket with an outer diameter smaller than that of the first sprocket, and the second chain is provided on the two third sprockets.

[0016] Optionally, it further includes a clamping mechanism, wherein the clamping mechanism includes a cylinder and a clamping plate;

[0017] There are two cylinders and two clamping plates respectively, and the two clamping plates correspond to the two cylinders one by one. The two cylinders are horizontally arranged on opposite sides of the frame, and the telescopic end of each cylinder is provided with the clamping plate for clamping both sides of the length direction of the multiple license plates arranged from bottom to top in the tray.

[0018] Optionally, the lifting device for plate screen printing further comprises a limit assembly for clamping a plurality of the plate(s) arranged from bottom to top in the tray;

[0019] The limiting assembly includes two horizontal connecting rods and two angle steels;

[0020] The two horizontal connecting rods are arranged on the frame body up and down, and each horizontal connecting rod is slidably provided with a connecting tube corresponding to the two angle steels one by one, and each angle steel is vertically connected to the two horizontal connecting rods arranged on the frame body up and down through the connecting tube.

[0021] Optionally, the connecting members each include a threaded rod and a fastening nut;

[0022] A threaded through hole matching the threaded rod is provided on the bearing platform, the bottom end of the threaded rod passes through the threaded through hole and is connected to the bearing platform through the fastening nut, and the top and bottom ends of the threaded rod are respectively connected to the two ends of the corresponding first chain.

[0023] Optionally, a roller is disposed on the outer bottom of the tray, and a roller matching the roller is disposed on the bearing platform, and the roller can roll along the length direction of the roller.

[0024] The lifting device for screen printing of license plates provided in the present application arranges multiple license plates on a tray from bottom to top and then places the tray on a carrying platform. The rotation of the rotating shaft drives the first sprocket on the tray to rotate, and the rotation of the first sprocket drives the second sprocket connected to the tray by the first chain to rotate, so that the first sprocket drives the vertical up and down movement of the carrying platform connected to the first sprocket by the first chain and the connecting piece, thereby realizing automatic lifting of the license plate in the tray, avoiding manual lifting of the tray with multiple license plates stacked from bottom to top to the detection and separation equipment, making the automatic lifting process of the above-mentioned license plate more convenient and time-saving and labor-saving, thereby improving the efficiency of screen printing of license plates. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0026] Figure 1 A schematic diagram of the structure of a lifting device for screen printing of license plates provided in one embodiment of the present application;

[0027] Figure 2 A schematic diagram of the structure of a lifting device for screen printing of license plates provided in another embodiment of the present application;

[0028] Figure 3 An embodiment of the present application provides Figure 1 An enlarged schematic diagram of the local structure in FIG.

[0029] Figure 4 An embodiment of the present application provides Figure 1 The main view from the direction B;

[0030] Figure 5 An embodiment of the present application provides Figure 1The main view from direction A;

[0031] Figure 6 A schematic diagram of the structure of a connector provided in one embodiment of the present application;

[0032] Figure 7 A schematic diagram of the structure of a position detection component provided in one embodiment of the present application.

[0033] In the figure: 100, frame; 101, bearing platform; 1011, roller; 102, second sprocket; 200, tray; 201, license plate; 202, roller; 300, lifting mechanism; 301, rotating shaft; 3011, first sprocket; 302, first chain; 400, connecting member; 401, threaded rod; 402, fastening nut; 500, clamping mechanism; 501, cylinder; 502, clamping plate; 600, position detection component; 601, position sensor; 602, contact rod; 700, driving member; 701, driving motor; 702, second chain; 800, limiting component; 801, horizontal connecting rod; 8011, connecting tube; 802, angle steel. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application is clearly and completely described below. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work also fall within the scope of protection of the present application.

[0035] refer to Figures 1 to 7 The present application provides a lifting device for license plate screen printing, comprising:

[0036] A frame 100 is provided with a carrying platform 101 for receiving a tray 200, and a plurality of license plates 201 are arranged in the tray 200 from bottom to top; wherein, a plurality of license plates 201 (license plates to be screen-printed) are stacked in the tray 200 from bottom to top, and the number of license plates 201 placed in the tray 200 can be set according to actual needs, and therefore, the present application does not make any specific limitation thereto.

[0037] The lifting mechanism 300 is arranged on the frame 100 and includes a rotating shaft 301 and two first chains 302; the rotating shaft 301 is rotatably arranged at the lower section of the frame 100 and two first sprockets 3011 are arranged at both ends thereof, and a second sprocket 102 rotatably connected to the frame 100 is arranged directly above each first sprocket 3011, and each first chain 302 is arranged on the first sprocket 3011 and the second sprocket 102 corresponding thereto and the two ends thereof are respectively connected to the connecting member 400 arranged on the carrying platform 101. The upper and lower ends are connected; wherein, the rotation of the rotating shaft 301 drives the first sprocket 3011 thereon to rotate, and the rotation of the first sprocket 3011 drives the second sprocket 102 connected to it by the first chain 302 to rotate, so that the first sprocket 3011 drives the vertical up and down movement of the carrying platform 101 connected to the first sprocket 3011 by the connecting member 400, thereby realizing the automatic lifting of the license plate 201 in the tray 200, which is convenient to operate and saves time and effort, thereby improving the lifting efficiency of the license plate 201.

[0038] The lifting device for screen printing of license plates provided in the present application arranges multiple license plates 201 on a tray 200 from bottom to top and then places the tray 200 on the carrying platform 101. The rotation of the rotating shaft 301 drives the first sprocket 3011 thereon to rotate, and the rotation of the first sprocket 3011 drives the second sprocket 102 connected to it by the first chain 302 to rotate, so that the first sprocket 3011 drives the carrying platform 101 connected to the first sprocket 3011 by the first chain 302 and the connecting member 400 to move vertically up and down, thereby realizing the automatic lifting of the license plate 201 in the tray 200 to the target position so that the subsequent license plate detection and separation equipment can separate the license plate 201 in sequence, avoiding manual lifting of the tray with multiple license plates 201 stacked from bottom to top to the detection and separation equipment, making the above-mentioned automatic lifting process of the license plate 201 more convenient and time-saving and labor-saving, thereby improving the efficiency of screen printing of the license plate 201.

[0039] In some embodiments, reference Figure 5 and Figure 7 The lifting device for screen printing of license plates in the present application also includes a position detection component 600 for detecting whether the topmost license plate 201 on the tray 200 is lifted to a preset position (which can be set according to actual conditions, and the present application does not make specific limitations on it). The position detection component 600 is located above the carrying platform 101, so that the lifting position of the license plate 201 is determined, thereby ensuring the consistency of the lifting height of the license plate 201 and facilitating operation.

[0040] In addition, the position detection component 600 includes a position sensor 601 and a contact rod 602; specifically, the position sensor 601 is arranged on the frame 100, and the contact rod 602 is hinged on the frame 100; wherein, when the position of the top-layer license plate 201 on the tray 200 is equal to the preset position, the top-layer license plate 201 abuts against the bottom end of the contact rod 602 to rotate the contact rod 602 so that the top end of the contact rod 602 is separated from the position sensor 601, and when the position of the top-layer license plate 201 on the tray 200 is lower than the preset position, the top end of the contact rod 602 contacts the position sensor 601. In this way, each time the license plate 201 on the tray 200 is lifted to a determined position, the lifting can be stopped, so that the position of each lifting is fixed, thereby ensuring the efficiency of lifting the license plate 201.

[0041] In some embodiments, reference Figure 4 In the present application, one end of the rotating shaft 301 is driven by the driving member 700 ; that is, the driving member 700 provides the driving force for the rotating shaft 301 to rotate.

[0042] In addition, the driving member 700 includes a driving motor 701 and a second chain 702; specifically, one end of the driving motor 701 close to the rotating shaft 301 is arranged on the frame 100 and is electrically connected to the position sensor 601, and the output shaft of the driving motor 701 and the rotating shaft 301 are respectively provided with a third sprocket whose outer diameter is smaller than the outer diameter of the first sprocket 3011, and the second chain 702 is provided on the two third sprockets.

[0043] In the above embodiment, the rotation of the output shaft of the driving motor 701 drives the rotation of the third sprocket sleeved on the output shaft thereof, and the rotation of the third sprocket drives the rotation of another third sprocket connected to it through the second chain 702, and the other third sprocket is sleeved on the rotating shaft 301, so as to realize the rotation of the rotating shaft 301, and the driving motor 701 drives the rotating shaft 301 to rotate by the transmission of the second chain 702, so that the rotation of the rotating shaft 301 is more stable, thereby improving the stability of the lifting process of the license plate 201. In addition, when the position sensor 601 detects that the tray 200 is lifted to a preset height (which can be set according to actual conditions, and the present application does not specifically limit it here), the driving motor 701 stops running to stop lifting the tray 200, thereby improving the accuracy of the lifting height of the license plate 201 in the tray 200.

[0044] In some embodiments, reference Figure 5The clamping mechanism 500 in the present application includes a cylinder 501 and a clamping plate 502; specifically, there are two cylinders 501 and two clamping plates 502, and the two clamping plates 502 correspond to the two cylinders 501 one by one. The two cylinders 501 are horizontally arranged on opposite sides of the frame 100, and the telescopic end of each cylinder 501 is provided with a clamping plate 502 for clamping both sides of the length direction of multiple license plates 201 arranged from bottom to top in the tray 200.

[0045] In the above embodiment, the cylinder 501 is extended to drive the clamping plate 502 arranged on the telescopic end of the cylinder 501 to clamp the two sides of the length direction of the license plate 201. After the license plate detection and separation device absorbs the license plate on the top layer of the tray 200, the telescopic end of the cylinder 501 is retracted, and then the first sprocket 3011 on it is driven to rotate by the rotation of the rotating shaft 301, and the rotation of the first sprocket 3011 drives the second sprocket 102 connected to it through the first chain 302 to rotate, so that the first sprocket 3011 drives the second sprocket 102 connected to the first sprocket 3011 to rotate. The vertical upward movement of the carrying platform 101 connected by the first chain 302 and the connecting piece 400 realizes the automatic lifting of the license plate 201 in the tray 200, and then the telescopic end of the cylinder 501 extends again to drive the clamping plate 502 thereon to clamp the license plate 201 on both sides of the length direction. The above operation process is repeated continuously to realize the clamping of the license plate 201 on the tray 200 during the lifting process, thereby preventing the license plate 201 on the tray 200 from shifting, and facilitating the accuracy of subsequent operations such as suction, detection and separation of the license plate 201.

[0046] In some embodiments, reference Figure 1 , Figure 2 ,and Figure 5 The lifting device for screen printing of license plates in the present application also includes a limiting component 800 for clamping multiple license plates 201 arranged from bottom to top in the tray 200. Since multiple license plates 201 are stacked from bottom to top on the tray 200, the license plates 201 are easily tipped over under shaking or collision. Clamping the license plates by the limiting component 800 can improve the stability of the license plates 201 during the lifting process and after they are lifted to a certain position.

[0047] In addition, the position limiting assembly 800 includes two horizontal connecting rods 801 and two angle steels 802; specifically, the two horizontal connecting rods 801 are arranged vertically on the frame 100, and a connecting tube 8011 corresponding to the two angle steels 802 is slidably arranged on each horizontal connecting rod 801, and each angle steel 802 is vertically connected to the two horizontal connecting rods 801 arranged vertically on the frame 100 through the connecting tube 8011. Among them, the connecting tube 8011 can slide back and forth along the length direction of the horizontal connecting rod 801, and the sliding mode between the connecting tube 8011 and the horizontal connecting rod 801 can be set according to actual needs, so the present application does not specifically limit it here. The length of the horizontal connecting rod 801 is greater than the length of the pallet 200. Therefore, before the pallet 200 enters the supporting platform 101, the two angle steels 802 are first slid to the two ends of the horizontal connecting rod 801. When the pallet 200 is placed on the supporting platform 101, the two angle steels 802 are slid to a position close to the pallet 200. In this way, the two corners of the license plate 201 are clamped by the angle steel 802, thereby limiting the length direction of the license plate 201 on the pallet 200 by the angle steel 802, preventing the license plate 201 from tipping over, and improving the stability of the license plate 201 during the lifting process and after it is lifted to a certain position.

[0048] In some embodiments, reference Figure 6 , the connector 400 in the present application includes a threaded rod 401 and a fastening nut 402; specifically, a threaded through hole matching the threaded rod 401 is provided on the load-bearing platform 101, the bottom end of the threaded rod 401 passes through the threaded through hole and is connected to the load-bearing platform 101 through the fastening nut 402, and the top and bottom ends of the threaded rod 401 are respectively connected to the two ends of the first chain 302 corresponding thereto. Among them, a threaded through hole matching the threaded rod 401 is provided on the load-bearing platform 101, and the threaded rod 401 is threadedly arranged in the threaded through hole (by threading the threaded rod 401 through and screwing it in the threaded through hole, and the threaded rod 401 has a threaded through hole provided on the load-bearing platform 101, so that the load-bearing platform 101 and the first chain 302 are more stably connected under the cooperation of the threaded rod 401 and the threaded through hole), and the fastening nut 402 is screwed on the threaded rod 401 to achieve the fixing of the threaded rod 401 and the load-bearing platform 101, The two ends of the first chain 302 are respectively connected to the top and bottom ends of the corresponding threaded rod 401 by fastening bolts (or other fixing methods, the present application does not specifically limit the connection method between the first chain 302 and the threaded rod 401), so that the vertical up and down movement of the supporting platform 101 and the tray 200 with the license plate 201 on the supporting platform 101 is realized by the rising or falling of the first chain 302, so that the lifting process of the license plate 201 saves time and effort, thereby improving the efficiency of lifting the license plate 201.

[0049] In some embodiments, reference Figure 3 and Figure 4 The outer bottom of the tray 200 in the present application is provided with a roller 202, and a roller 1011 matching the roller 202 is provided on the carrying platform 101, and the roller 202 can roll along the length direction of the roller 1011. Since two trays 200 with multiple license plates 201 stacked from bottom to top can be placed on the carrying platform 101 at the same time, one of the trays 200 is located directly below the license plate detection and separation device, and the multiple license plates 201 stacked from bottom to top on the other tray 200 are clamped by angle steels 802 on both sides of the length direction of the tray 200 to ensure the stability of the multiple license plates 201 stacked from bottom to top on the tray 200. After the license plates 201 from top to bottom on the tray 200 located directly below the license plate detection and separation device are separated, the empty tray 200 is placed. Remove it, and then move the next tray 200 on the carrying platform 101 with multiple license plates 201 stacked from bottom to top to just below the license plate separation device, and start separating the license plates 201. Because multiple license plates 201 are stacked from bottom to top in the tray 200, the overall gravity of the tray 200 is relatively large, and the rollers 202 set on the outer bottom of the tray 200 and the rollers 1011 on the carrying platform 101 make the movement process of the tray 200 on the carrying platform 101 less labor-intensive, thereby improving the movement efficiency of the tray 200 on the carrying platform 101.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, ordinary technicians in the field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A lifting device for license plate screen printing, characterized in that: include: A frame (100), wherein a carrying platform (101) for receiving a tray (200) is arranged on the frame (100), and a plurality of license plates (201) are arranged in the tray (200) from bottom to top; A lifting mechanism (300), the lifting mechanism (300) is arranged on the frame (100) and comprises a rotating shaft (301) and two first chains (302); the rotating shaft (301) is rotatably arranged at the lower section of the frame (100) and two first sprockets (3011) are arranged at both ends thereof, a second sprocket (102) rotatably connected to the frame (100) is arranged directly above each of the first sprockets (3011), each of the first chains (302) is arranged on the first sprocket (3011) and the second sprocket (102) corresponding thereto and both ends thereof are connected to the upper and lower ends of a connecting member (400) arranged on the supporting platform (101).

2. The lifting device for license plate screen printing according to claim 1, characterized in that: It also includes a position detection component (600) for detecting whether the topmost license plate (201) on the tray (200) is lifted to a preset position, and the position detection component (600) is located above the carrying platform (101); The position detection assembly (600) comprises a position sensor (601) and a contact rod (602); The position sensor (601) is arranged on the frame (100), and the contact rod (602) is hinged on the frame (100); When the position of the topmost license plate (201) on the tray (200) is equal to the preset position, the topmost license plate (201) abuts against the bottom end of the contact rod (602) to rotate the contact rod (602) so that the top end of the contact rod (602) is separated from the position sensor (601); when the position of the topmost license plate (201) on the tray (200) is lower than the preset position, the top end of the contact rod (602) contacts the position sensor (601).

3. The lifting device for license plate screen printing according to claim 2, characterized in that: One end of the rotating shaft (301) is driven by a driving member (700); The driving member (700) comprises a driving motor (701) and a second chain (702); One end of the driving motor (701) close to the rotating shaft (301) is arranged on the frame (100) and is electrically connected to the position sensor (601); the output shaft of the driving motor (701) and the rotating shaft (301) are respectively sleeved with a third sprocket having an outer diameter smaller than the outer diameter of the first sprocket (3011); and the second chain (702) is sleeved on the two third sprockets.

4. The lifting device for license plate screen printing according to claim 1, characterized in that: It also includes a clamping mechanism (500), wherein the clamping mechanism (500) includes a cylinder (501) and a clamping plate (502); There are two cylinders (501) and two clamping plates (502), respectively, and the two clamping plates (502) correspond to the two cylinders (501) one by one. The two cylinders (501) are horizontally arranged on opposite sides of the frame (100), and the telescopic end of each cylinder (501) is provided with a clamping plate (502) for clamping the two sides of the length direction of the multiple license plates (201) arranged from bottom to top in the tray (200).

5. The lifting device for license plate screen printing according to claim 1, characterized in that: It also includes a limiting assembly (800) for clamping a plurality of license plates (201) arranged from bottom to top in the tray (200); The limiting assembly (800) includes two horizontal connecting rods (801) and two angle steels (802); The two horizontal connecting rods (801) are arranged vertically on the frame (100), and each of the horizontal connecting rods (801) is slidably provided with a connecting tube (8011) corresponding to the two angle steels (802) one by one, and each of the angle steels (802) is vertically connected to the two horizontal connecting rods (801) arranged vertically on the frame (100) through the connecting tube (8011).

6. The lifting device for license plate screen printing according to claim 1, characterized in that: The connecting members (400) each include a threaded rod (401) and a fastening nut (402); The supporting platform (101) is provided with a threaded through hole matching the threaded rod (401), the bottom end of the threaded rod (401) passes through the threaded through hole and is connected to the supporting platform (101) via the fastening nut (402), and the top and bottom ends of the threaded rod (401) are respectively connected to the two ends of the corresponding first chain (302).

7. The lifting device for license plate screen printing according to any one of claims 1 to 6, characterized in that: The outer bottom of the tray (200) is provided with a roller (202), and the carrying platform (101) is provided with a roller (1011) matching the roller (202), and the roller (202) can roll along the length direction of the roller (1011).

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