A printing plate roller transfer device

Abstract

A printing plate roller transfer device, comprising a base plate, a support block is arranged on the base plate near both ends thereof, a clamping device for clamping a plate roller is arranged in each of the two support blocks, and a drive device for driving the two clamping devices is arranged on one side of the two clamping devices; a roller shaft support seat is further arranged on each of the two support blocks, the roller shaft support seat has a support groove for supporting a roller shaft and allowing the roller shaft to rotate around a central shaft to realize winding of cotton on the plate roller; the clamping device clamps the cotton wound on the plate roller while clamping the plate roller. The present application reduces the carrying link before transfer, reduces the risk of damage caused by collision, clamps the cotton wound on the plate roller while clamping the plate roller by using the clamping device, and does not need to be bundled, so as to reduce the material cost and labor cost, thereby reducing the cost of the whole product.

Description

Technical Field

[0001] This invention relates to a printing plate roller transfer device, belonging to the technical field of gravure printing. Background Technology

[0002] Printing rollers are one of the key components in flexographic printing presses, and their production and processing are extremely rigorous. Typically, a layer of copper is plated on the surface of the roller, and then patterns and text are engraved on its surface using a gravure electronic engraving machine. After that, a layer of chromium is plated on the surface. Once processed, it is delivered to the printing plant for use on the flexographic printing press. It is commonly used for printing on plastic packaging. Even slight damage to the printing roller can cause the patterns and text on the printed product to fail to meet the requirements, resulting in scrap. Therefore, the transportation of printing rollers is extremely strictly controlled.

[0003] Currently, printing rollers are first wrapped in cotton cloth or plastic bubble wrap, and then placed on a transfer fixture, which then transports them to the packing area for packing and shipping.

[0004] This method has several drawbacks. First, both the initial cotton wrapping process and the subsequent placement of the wrapped roller onto the transfer fixture involve handling, both of which carry the risk of damage from bumps and knocks. Second, the initial cotton wrapping process also involves bundling the cotton, which requires not only materials such as wrapping kits but also manual labor, increasing the product cost.

[0005] Chinese patent CN 218369190U discloses a printing plate roller transfer fixture that can improve the safety of the printing plate roller during transportation and reduce the risk of damage from bumps and collisions during transportation, but the above-mentioned problems still exist. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this application provides a printing plate roller transfer device with a cotton cloth wrapping function, which reduces the handling steps before transfer, lowers the risk of bumps and damage, and thus reduces the risk of damage to the printing plate roller before it is packed and shipped.

[0007] A printing plate roller transfer device includes a base plate, with a support block disposed near each end of the base plate. Each support block contains a clamping device for clamping the printing plate roller. A driving device for driving the two clamping devices is disposed on one side of each clamping device. Each support block also has a roller shaft support seat, which has a support groove for supporting the roller shaft and allowing the roller shaft to rotate around its central axis to achieve the winding of cotton cloth onto the printing plate roller. The clamping devices clamp the printing plate roller while simultaneously clamping the cotton cloth wound around it.

[0008] Preferably, the clamping device includes a bidirectional lead screw rotatably connected to the support block and two clamping blocks slidably disposed in the support block and helically connected to two threaded sections of the bidirectional lead screw, respectively.

[0009] The drive device includes a drive shaft and several shaft mounting seats for mounting the drive shaft. A first bevel gear is provided at both ends of the drive shaft, and a second bevel gear that meshes with the corresponding first bevel gear is provided at the end of the bidirectional lead screw near the drive shaft.

[0010] Preferably, the surface of the support groove is provided with a smooth layer.

[0011] Preferably, the support groove is located on the outer part of the middle position of the two clamping blocks.

[0012] Preferably, a sliding platform is provided on the outer side of the support block. The sliding platform is slidably mounted on a seat plate that is detachably connected to the base plate. A rotating shaft one and a rotating shaft two are provided on the sliding platform. The shaft ends of rotating shaft one and rotating shaft two are respectively provided with mating parts for engaging with the shaft ends of the drive shaft and the roller shaft. Furthermore, both mating parts are simultaneously engaged with the shaft ends of the drive shaft and the roller shaft. The rotating shaft one and rotating shaft two are also connected by a gear transmission structure.

[0013] Preferably, the docking part has an axial docking groove and a radial through groove communicating with the axial docking groove. A transmission block is slidably disposed in the radial through groove. A fixing plate connected to the docking part is disposed on the radial outer side of the radial through groove. A spring connected to the transmission block is disposed on the fixing plate. The transmission block has two force-bearing inclined surfaces arranged symmetrically in the axial direction and a transmission surface located on the radial outer side of the two force-bearing inclined surfaces. The transmission surface is used to act on the keyway opened on the roller or drive shaft. The transmission block also has a guide rod body part passing through the fixing plate. The spring is sleeved on the guide rod body part.

[0014] Preferably, the support block is provided with a lead screw mechanism that provides power to the sliding table.

[0015] Preferably, both the first and second rotating shafts are telescopic structures with adjustable lengths, each including a shaft body with an axial slot and an adjustment part assembled in the axial slot. The adjustment part is connected to the bottom of the axial slot by a spring.

[0016] In summary, the present invention has the following beneficial effects:

[0017] 1. This invention provides a roller support seat for supporting a roller shaft and allowing the roller shaft to rotate around its central axis to wrap cotton cloth around the printing roller. This integrates the function of wrapping cotton cloth into the transfer device, requiring only one handling action, reducing the handling steps before transfer, reducing the risk of bumps and damage, and thus reducing the risk of damage to the printing roller before packaging and shipping. At the same time, the clamping device clamps the cotton cloth wrapped around the printing roller while clamping the printing roller, eliminating the need for bundling work, thus reducing material and labor costs, thereby reducing the overall cost of the product.

[0018] 2. In this invention, clamping and wrapping with cotton cloth are performed simultaneously, reducing the time spent in the factory area before transfer, improving the efficiency of product delivery and shipment, winning customer trust, and reducing manual intervention. If the wrapping with cotton cloth is completed before clamping, manual intervention is required to maintain the state of the cotton cloth covering the printing roller, otherwise the cotton cloth will fall apart, making it difficult to ensure that the printing roller will not be damaged by collision during subsequent transportation. If clamping is completed faster than wrapping with cotton cloth, it is easy to result in too few layers of cotton cloth, affecting the anti-collision and anti-bumping effect.

[0019] 3: This invention achieves convenient and rapid docking through two actions: "moving the sliding table" and "rotating the rotating shaft," reducing the time spent in the factory area before transfer and improving the efficiency of product delivery. Attached Figure Description

[0020] Figure 1 This is a simplified schematic diagram of the transfer device in Example 1;

[0021] Figure 2 This is a partial structural diagram from Example 1;

[0022] Figure 3 This is a simplified schematic diagram of the transfer device in Example 2;

[0023] Figure 4 This is a partial structural diagram of Example 2;

[0024] Figure 5 This is a partial structural diagram of Example 2;

[0025] Figure 6 This is a connection diagram of the docking part in Example 2;

[0026] Figure 7 This is a simplified schematic diagram of the transmission block in Example 2;

[0027] Figure 8 This is a structural diagram of shaft one and shaft two in Example 2. Detailed Implementation

[0028] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0029] Example 1: A printing plate roller transfer device, such as Figure 1-2 As shown, as in the prior art, it includes a base plate 1, and a support block 2 is respectively provided on the base plate 1 near its two ends. Each of the two support blocks 2 is provided with a clamping device 3, and a driving device 4 for driving the two clamping devices 3 is provided on one side of the two clamping devices 3.

[0030] The clamping device 3 includes a bidirectional lead screw 31 rotatably connected to the support block 2 and two clamping blocks 32 slidably disposed within the support block 2. The two clamping blocks 32 are respectively helically connected to two threaded sections of the bidirectional lead screw 31. The clamping blocks 32 have arc-shaped clamping surfaces, and the arc-shaped clamping surfaces on the two clamping blocks 32 are symmetrically arranged. The driving device 4 includes a drive shaft 41 and several shaft mounting seats 42 for mounting the drive shaft 41. A first bevel gear 43 is provided at both ends of the drive shaft 41. A second bevel gear 44 that meshes with the corresponding first bevel gear 43 is provided at one end of the bidirectional lead screw 31 near the drive shaft 41.

[0031] Both of the support blocks 2 are also provided with roller support seats 6, which include support grooves 61 for supporting the roller shaft. The support grooves 61 can be U-shaped grooves.

[0032] In use, first, place the transfer device to the side of the roll 5 wrapped with cotton cloth. Then, place the two roller shafts on the two support blocks 2 on the roller shaft support seats 6. On this transfer device, the worker first pulls out the free end of the cotton cloth and wraps it around the roller body of the printing roller to a certain extent, while rotating the printing roller. This completes the action of wrapping the cotton cloth on the transfer device. After the printing roller is wrapped with cotton cloth, the clamping device 3 clamps and fixes the printing roller together with the cotton cloth, so that the printing roller is stably restricted on the transfer device to prevent damage from collisions during the transfer process. After clamping, the cotton cloth is cut with a blade.

[0033] This transfer device provides a roller support seat 6 for supporting the roller shaft and allowing the roller shaft to rotate around its central axis to wrap cotton cloth around the printing roller. This integrates the function of wrapping cotton cloth into the transfer device, requiring only one handling action, reducing the handling steps before transfer, reducing the risk of bumps and damage, and thus reducing the risk of damage to the printing roller before it is packed and shipped. At the same time, since the clamping device clamps the cotton cloth wrapped around the printing roller while clamping the printing roller, there is no need for bundling, which can reduce material and labor costs, thereby reducing the overall cost of the product.

[0034] Understandably, the smoother the support groove 61 is, the better. This reduces wear on the roller shaft or the generation of burrs during the rotation of the printing roller, and prevents problems with the fit between the printing roller and the bearings on the machine during subsequent assembly. For this reason, the surface of the support groove 61 is provided with a smooth layer.

[0035] Example 2: See Figure 3-7 As shown, a sliding platform 71 is provided on the outer side of the support block 2. The sliding platform 71 is slidably mounted on a seat plate 70 that is detachably connected to the base plate 1. The seat plate 70 and the base plate 1 can be detachably connected by plugging. A rotating shaft 72 and a rotating shaft 73 are provided on the sliding platform 71 through several shaft mounting seats. The shaft ends of the rotating shaft 72 and the rotating shaft 73 are respectively provided with docking parts 74 for engaging with the shaft ends of the drive shaft 41 and the roller shaft. Furthermore, by moving the sliding platform 71, the two docking parts 74 can be simultaneously engaged with the shaft ends of the drive shaft 41 and the roller shaft, which is simple to operate. The rotating shaft 72 and the rotating shaft 73 are also connected by a gear transmission structure. The gear transmission structure includes at least a gear 1 and a gear 2. The gear 1 is fixedly mounted on the rotating shaft 72, and the gear 2 is fixedly mounted on the rotating shaft 73. In this case, the gear transmission structure also includes a gear 3 that is disposed between the rotating shaft 1 and the gear 2 and meshes with both the rotating shaft 1 and the gear 2.

[0036] After the roller shafts on both sides of the printing roller are placed on the two support seats 6, an external force is first applied to the sliding table 71 to bring the sliding table 71 closer to the printing roller, and the first docking part 721 is aligned with the drive shaft 41. At the same time, the second docking part 731 is aligned with the roller shaft. Then, the cotton cloth is wrapped around the roller body of the printing roller to a certain extent, and the drive shaft 41 is rotated. On the one hand, the drive shaft 41 causes the printing roller to rotate through the rotating shaft 72, the gear transmission structure, the rotating shaft 73, etc., so that the printing roller can fully complete the action of wrapping the cotton cloth. On the other hand, the drive shaft 41 causes the bidirectional lead screw 31 to rotate through the transmission of the first bevel gear 43 and the second bevel gear 44, so that the two clamping blocks 32 of the clamping device 3 move closer to each other and clamp the printing roller. After clamping, the cotton cloth is cut with a blade.

[0037] This structure allows clamping and cotton wrapping to occur simultaneously, reducing time spent in the factory before transfer, improving product delivery efficiency, gaining customer trust, and reducing manual intervention. If cotton wrapping is completed before clamping, manual intervention is required to maintain the cotton covering the printing roller; otherwise, the cotton will unravel, making it difficult to ensure the printing roller is not damaged during subsequent transportation. If clamping is completed faster than cotton wrapping, the number of cotton layers may be insufficient, affecting the anti-collision and anti-bumping effect. In addition, the seat plate 70 and the base plate 1 are detachably connected. After the printing roller is clamped and wrapped with cotton, the seat plate 70 and the components mounted on it are detached from the base plate 1 and can be reused, not shipped with the printing roller, thus reducing costs.

[0038] In this case, the two docking parts 74 have the same structure; the docking part 74 has an axial docking groove 741 and a radial through groove 742 connected to the axial docking groove 741. A transmission block 75 is slidably disposed in the radial through groove 742. A fixing plate 76 connected to the docking part 74 is disposed on the radial outer side of the radial through groove 742. A spring 77 connected to the transmission block 75 is provided on the fixing plate 76. The transmission block 75 has two force-bearing inclined surfaces 751 arranged symmetrically in the axial direction and a transmission surface 752 located on the radial outer side of the two force-bearing inclined surfaces 751. The transmission surface 752 is used to act on the keyway pre-opened on the roller or drive shaft 41. The transmission block 75 also has a guide rod body part 753 passing through the fixing plate 76. The spring 77 is sleeved on the guide rod body part 753.

[0039] When the sliding table 71 moves, causing the rotating shaft 72 and the rotating shaft 73 to move, the ends of the drive shaft 41 and the roller shaft are inserted into their respective axial mating grooves 741. This action acts on the relatively outer force-bearing inclined surface 751 in the axial mating groove 741, causing the transmission block 75 to rise radially outward. The sliding table 71 stops when the keyway on the roller shaft or drive shaft 41 reaches the axial position of the transmission block 75. At this point, regardless of whether the transmission block 75 is already engaged in the corresponding keyway, the worker only needs to rotate the rotating shaft 72, and the rotating shaft 73 will also rotate accordingly. The transmission blocks 75 on both the rotating shaft 72 and the rotating shaft 73 will rotate circumferentially, thus engaging in the corresponding keyway. Then, under the interaction of the transmission surface 752 and the keyway, power is transmitted to the drive shaft 41 and the roller shaft, causing them to rotate. This structure, through the two actions of "moving the sliding table 71" and "rotating the pivot 72," enables convenient and rapid docking, reducing the time spent in the factory area before transfer and improving the efficiency of product delivery. When the base plate 70 needs to be separated from the bottom plate 1 for reuse, a reverse force is applied to the sliding table 71 to make it move in the opposite direction. The simplest way is to directly pull out the base plate 70.

[0040] The support block 2 is equipped with a lead screw mechanism that provides power to the sliding table 71. The lead screw mechanism can self-lock after the sliding table 71 slides, thereby restricting the sliding table 71. The lead screw mechanism has a lead screw 81 that is helically connected to the sliding table 71. Guide rails 82 are provided on both sides of the sliding table 71 to limit its sliding direction. When the lead screw 81 rotates, the sliding table 71 moves. A handle 83 is connected to the lead screw 81 for easy rotation.

[0041] Generally, to ensure that the second docking part 731 is precisely aligned with the roller shaft when the first docking part 721 is aligned with the drive shaft 41, the end face of the roller shaft must always be in a specific position on the support base 6. However, in reality, the position of the roller shaft end face deviates to some extent when the roller is placed. Therefore, the first rotating shaft 72 is configured as a telescopic structure with adjustable length, and the second rotating shaft 73 is also a telescopic structure with adjustable length, such as... Figure 8 As shown, both the first rotating shaft 72 and the second rotating shaft 73 include a shaft body 72-1 with an axial slot and an adjustment part 72-2 assembled in the axial slot. The adjustment part 72-2 is connected to the bottom of the axial slot by a spring 72-3. In this way, whether the position of the roller end face is positively or negatively deviated, the second docking part 731 can be aligned with the roller when the first docking part 721 is aligned with the drive shaft 41.

[0042] The above embodiments are merely descriptions of preferred embodiments of the present invention and are not intended to limit the concept and scope of the present invention. Various modifications and improvements made to the technical solutions of the present invention by those skilled in the art without departing from the design concept of the present invention should fall within the protection scope of the present invention. The technical content for which protection is sought in this invention has been fully described in the claims.

Claims

1. A printing plate roller transfer device, comprising a base plate (1), wherein a support block (2) is respectively provided on the base plate (1) near both ends thereof, and a clamping device (3) for clamping the printing plate roller is provided in each of the two support blocks (2), and a driving device (4) for driving the two clamping devices (3) is provided on one side of the two clamping devices (3); characterized in that, Both of the support blocks (2) are also provided with roller support seats (6), and the roller support seats (6) have support grooves (61) for supporting the roller and allowing the roller to rotate around its central axis to realize the wrapping of cotton cloth on the printing roller. The clamping device (3) clamps the cotton cloth wrapped around the printing roller while clamping the printing roller; The clamping device (3) includes a bidirectional lead screw (31) rotatably connected to the support block (2) and two clamping blocks (32) slidably disposed in the support block (2) and helically connected to the two threaded sections of the bidirectional lead screw (31). The drive device (4) includes a drive shaft (41) and a plurality of shaft mounting seats (42) for mounting the drive shaft (41). A first bevel gear (43) is provided at both ends of the drive shaft (41). A second bevel gear (44) that meshes with the corresponding first bevel gear (43) is provided at one end of the bidirectional lead screw (31) near the drive shaft (41). A sliding platform (71) is provided on the outer side of the support block (2). The sliding platform (71) is slidably mounted on the seat plate (70) which is detachably connected to the base plate (1). A rotating shaft one (72) and a rotating shaft two (73) are provided on the sliding platform (71). The shaft ends of the rotating shaft one (72) and the rotating shaft two (73) are respectively provided with docking parts (74) for connecting with the shaft ends of the drive shaft (41) and the roller shaft. The two docking parts (74) are simultaneously connected with the shaft ends of the drive shaft (41) and the roller shaft. The rotating shaft one (72) and the rotating shaft two (73) are also connected by a gear transmission structure.

2. The printing plate roller transfer device according to claim 1, characterized in that, The surface of the support groove (61) is provided with a smooth layer.

3. The printing plate roller transfer device according to claim 1, characterized in that, The support groove (61) is located on the outer side of the middle position of the two clamping blocks (32).

4. The printing plate roller transfer device according to claim 1, characterized in that, The docking part (74) has an axial docking groove (741) and a radial through groove (742) connected to the axial docking groove (741). A transmission block (75) is slidably disposed in the radial through groove (742). A fixing plate (76) connected to the docking part (74) is disposed on the radial outer side of the radial through groove (742). A spring (77) connected to the transmission block (75) is provided on the fixing plate (76). The transmission block (75) has two force-bearing inclined surfaces (751) arranged symmetrically in the axial direction and a transmission surface (752) located on the radial outer side of the two force-bearing inclined surfaces (751). The transmission surface (752) is used to act on the keyway opened on the roller or drive shaft (41). The transmission block (75) is also provided with a guide rod body (753) passing through the fixing plate (76). The spring (77) is sleeved on the guide rod body (753).

5. A printing plate roller transfer device according to claim 1, characterized in that, The support block (2) is provided with a screw mechanism that provides power to the sliding table (71).

6. A printing plate roller transfer device according to claim 1, characterized in that, Both the first rotating shaft (72) and the second rotating shaft (73) are telescopic structures with adjustable length. They each include a shaft body (72-1) with an axial slot and an adjustment part (72-2) assembled in the axial slot. The adjustment part (72-2) is connected to the bottom of the axial slot by a spring (72-3).

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