Glue breaking cam mechanism

Abstract

The utility model discloses a glue breaking cam mechanism which is applied to an adhesive binding machine and comprises a fixing structure, two glue breaking cams, two adjusting structures and two driving structures, and the fixing structure is connected to the outer wall of the adhesive binding machine; the two adhesive breaking cams are arranged oppositely or oppositely and are connected in the fixing structure, and the outer edges of the two adhesive breaking cams abut against an adhesive scraping swing arm of the adhesive binding machine; the two adjusting structures are respectively in transmission connection with the two glue breaking cams so as to adjust the relative included angle of the glue breaking cams; the two driving structures are connected to the outer side of the fixing structure and are in driving connection with the two adjusting structures. According to the technical scheme, the efficiency and the precision of adjusting the gluing length are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of binding machines, in particular to a glue-breaking cam mechanism. Background Art

[0002] In the post-press binding industry, different sizes of books have different corresponding gluing lengths when passing through the glue pot. In order to adjust the gluing length, it is usually achieved by adjusting the angles of the two glue-cutting cams. A short or long gluing length will affect the quality of the book.

[0003] At present, the glue binding machine needs to stop to adjust the angle of the glue-breaking cam, observe the scale line and make manual adjustments. The adjustment accuracy is difficult to grasp and takes a lot of time. Utility Model Content

[0004] The main purpose of the utility model is to provide a glue-cutting cam mechanism, aiming to improve the efficiency and precision of adjusting the glue-applying length.

[0005] In order to achieve the above-mentioned purpose, the glue-cutting cam mechanism proposed in the utility model is applied to a glue binding machine, comprising:

[0006] A fixing structure connected to an outer wall of the binding machine;

[0007] Two glue-cutting cams, which are arranged opposite to or back to each other and connected to the fixed structure, and whose outer edges abut against the glue-scraping swing arm of the glue binding machine;

[0008] Two adjustment structures, the two adjustment structures are respectively connected to the two glue-cutting cams in a transmission manner to adjust the relative angle of the glue-cutting cams; and

[0009] Two driving structures are connected to the outer sides of the fixing structure and are drivingly connected to the two adjusting structures.

[0010] In one embodiment of the present application, each of the adjustment structures comprises a sun gear connected to the center of the rubber cutting cam, a plurality of planetary gears meshing with the sun gear, and an internal gear located outside the planetary gear and meshing with the planetary gear;

[0011] It also includes a large gear located on one side of the sun gear and a main shaft meshing with the large gear, and the outer end surface of the internal gear is fixedly connected to the end surface of the large gear;

[0012] The main shaft is connected to the driving structure to drive the large gear and the internal gear to rotate synchronously, thereby driving the planetary gear to rotate to adjust the relative angle of the two rubber-breaking cams.

[0013] In one embodiment of the present application, the driving structure includes a mounting frame, motors mounted on both sides of the mounting frame, a worm drivingly connected to the motor, and a turbine drivingly connected to the worm, and the turbine drivingly connected to the main shaft.

[0014] In one embodiment of the present application, the fixing structure includes two fixing flanges, and an installation space is provided between the two fixing flanges. The two rubber cutting cams and the two adjustment structures are arranged in the installation space.

[0015] In one embodiment of the present application, a cover plate is further provided on one side of the sun gear.

[0016] The technical solution of the utility model is to set two glue-cutting cams to rotate relative to each other. The highest point of the cam lifts the roller of the scraper arm, driving the scraper blade of the scraper assembly to press down, so that the scraper blade cuts off the hot melt glue on the surface of the rubber wheel, thereby achieving the purpose of glue cutting. The highest point of the cam contacts the roller of the scraper arm, and the scraper blade of the scraper assembly cuts off the glue, and no glue on the rubber wheel is transferred to the book; the lowest point of the cam contacts the roller of the scraper arm, and the scraper blade of the scraper assembly releases the glue supply, and glue on the rubber wheel is transferred to the book. The gluing length of the book is controlled by changing the angle between the two cams, thereby adjusting the gluing length and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0018] Figure 1 It is a structural schematic diagram of an embodiment of the rubber cutting cam mechanism of the utility model;

[0019] Figure 2 It is a structural explosion diagram of an embodiment of the rubber-cutting cam mechanism of the utility model;

[0020] Figure 3 The utility model is a structural schematic diagram of an embodiment of the perfect binding machine.

[0021] Description of Figure Numbers:

[0022] 10. Fixed structure; 11. Fixed flange; 20. Glue-cutting cam; 30. Adjustment structure; 31. Sun gear; 32. Planetary gear; 33. Internal gear; 34. Large gear; 35. Main shaft; 36. Cover plate; 40. Driving structure; 41. Mounting frame; 42. Motor; 43. Worm; 44. Turbine; 100. Glue binding machine; 101. Glue scraping swing arm.

[0023] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0025] In view of the problems in the background technology, combined with reference Figures 1 to 3 As shown, the glue-breaking cam 20 mechanism proposed in the utility model is applied to a glue binder, and includes a fixed structure 10, two glue-breaking cams 20, two adjustment structures 30 and two driving structures 40, wherein the fixed structure 10 is connected to the outer wall of the glue binder; the two glue-breaking cams 20 are arranged opposite to or back to back, and are connected inside the fixed structure 10, and the outer edges of the two are in contact with the glue scraping swing arm of the glue binder; the two adjustment structures 30 are respectively connected to the two glue-breaking cams 20 for adjusting the relative angle of the glue-breaking cams 20; the two driving structures 40 are connected to the outer sides of the fixed structure 10, and are driven to connect the two adjustment structures 30.

[0026] The glue-breaking cam 20 is used as a planetary carrier of the planetary gear 32 series. The glue-breaking cam 20 is provided with a planetary gear 32 of the planetary gear 32 series. The power main shaft 35 is provided with a sun gear 31 of the planetary gear 32 series. The ring gear is arranged on the frame and driven by a servo motor 42. The sun gears 31 of the two sets of planetary gear 32 series are driven by the same power main shaft 35, driving the two planetary carrier cams to rotate. The left ring gear is driven by the left servo motor 42, thereby changing the absolute position of the left planetary carrier cam relative to the power main shaft 35; the right ring gear is driven by the right servo motor 42, thereby changing the absolute position of the right planetary carrier cam relative to the power main shaft 35; and the angle between the two planetary carrier cams can be adjusted online, so as to achieve the purpose of adjusting the gluing length of the book without stopping the machine.

[0027] Combined with reference Figure 3As shown, in this embodiment, the book clamp of the glue binder clamps the book and passes directly above the glue pot, and the hot melt glue on the surface of the glue wheel will be transferred to the book. The rotation of the glue wheel of the glue wheel assembly can attach the hot melt glue on the glue pot to the surface of the glue wheel. The two cams of the glue-breaking cam 20 assembly rotate, and the highest point of the cam lifts the roller of the scraper arm, driving the scraper blade of the scraper assembly to press down, thereby realizing that the scraper blade cuts off the hot melt glue on the surface of the glue wheel to achieve the purpose of cutting glue. The highest point of the cam contacts the roller of the scraper arm, and the scraper blade of the scraper assembly cuts off the glue, and no glue on the glue wheel is transferred to the book; the lowest point of the cam contacts the roller of the scraper arm, and the scraper blade of the scraper assembly releases the glue supply, and glue on the glue wheel is transferred to the book. Further, the gluing length of the book is controlled by changing the angle between the two glue-breaking cams 20.

[0028] Specifically, the fixing structure 10 can be a metal mounting plate, which can be fixed on the outer wall of the glue binding machine by screws or welding. The two glue-cutting cams 20 can be arranged opposite or opposite to each other, and the outer edges of the two are in contact with the scraping arm to cut off or release the hot melt glue on the surface of the glue wheel. Adjustment structures 30 with the same or similar structures are arranged on both sides of the two glue-cutting cams 20 to adjust the relative angle between the two glue-cutting cams 20. The adjustment structure 30 can be a gear set or a crank structure or other transmission structure. The two adjustment structures 30 are also respectively driven and connected to the driving structure 40, which can be a motor 42 or a cylinder. The gluing length of the book is controlled by changing the angle between the two cams, thereby adjusting the gluing length and efficiency.

[0029] Combined with reference Figure 2 As shown, in one embodiment of the present application, each of the adjustment structures 30 includes a sun gear 31 connected to the center of the glue cutting cam 20, a plurality of planetary gears 32 meshing with the sun gear 31, and an internal gear 33 located on the outside of the planetary gear 32 and meshing with the planetary gear 32; it also includes a large gear 34 located on one side of the sun gear 31 and a main shaft 35 meshing with the large gear 34, and the outer end face of the internal gear 33 is fixedly connected to the end face of the large gear 34; the main shaft 35 is transmission-connected to the driving structure 40 to drive the large gear 34 and the internal gear 33 to rotate synchronously, thereby driving the planetary gear 32 to rotate to adjust the relative angle of the two glue cutting cams 20.

[0030] In this embodiment, the two glue-breaking cams 20 are mainly powered by an external drive structure 40. Taking the motor 42 drive as an example, the motor 42 drives the main shaft 35 to rotate the left sun gear 31 and the right sun gear 31, and drives the internal planetary gear 32 to rotate the left glue-breaking cam 20 and the right glue-breaking cam 20. The length of the rubber wheel is controlled by the angle between the left glue-breaking cam 20 and the right glue-breaking cam 20. The larger the angle between the lowest points of the left glue-breaking cam 20 and the right glue-breaking cam 20, the longer the lowest point of the glue-breaking cam 20 is, the longer the glue release of the glue scraping assembly is, and the longer the glue-applying length of the book is. The angle between the left glue-breaking cam 20 and the right glue-breaking cam 20 remains unchanged, the sprocket (not indicated) rotates, the roller of the glue-scraping swing arm contacts the cam surface, and the glue scraping assembly is driven. The longer the roller contacts the lowest point of the cam, the longer the glue-applying length of the book is. By changing the included angle between the left glue cutting cam 20 and the right glue cutting cam 20 , the scraping length is changed, and finally the gluing length is changed to cope with books of different specifications.

[0031] The function of the left adjustment structure 30 and the right adjustment structure 30 is to provide an angle offset for the rotation of the left and right glue-breaking cams 20, thereby changing the angle between the left and right glue-breaking cams 20. The function of the left drive structure 40 and the right drive structure 40 is to change the absolute position of the left and right glue-breaking cams 20 relative to the outer spindle 35. Thus, a certain angle is formed between the left and right glue-breaking cams 20, so as to achieve the purpose of online adjustment of the angles of the two cams.

[0032] Combined with reference Figure 1 As shown, in one embodiment of the present application, the driving structure 40 includes a mounting frame 41, a motor 42 mounted on both sides of the mounting frame 41, a worm 43 drivingly connected to the motor 42, and a turbine 44 drivingly connected to the worm 43, and the turbine 44 is drivingly connected to the main shaft 35.

[0033] The mounting frame 41 is a metal frame of a semi-arc structure, and a motor 42 can be installed at both ends thereof. The output end of the motor 42 is connected to the worm 43, which is connected to the turbine 44, and the turbine 44 is connected to the main shaft 35, so as to drive the main shaft 35 to rotate. The main shaft 35 can also be driven to rotate by a sprocket.

[0034] In one embodiment of the present application, the fixing structure 10 includes two fixing flanges 11 , and an installation space is provided between the two fixing flanges 11 . The two rubber cutting cams 20 and the two adjustment structures 30 are arranged in the installation space.

[0035] An installation space can be constructed between the two fixing flanges 11 by connecting columns or bolts, the two glue cutting cams 20 can be fixed in the installation space, the two adjustment structures 30 can be respectively located on both sides of the two glue cutting cams 20, and the fixing flange 11 can be connected to the outer wall of the glue binding machine by bolts.

[0036] In one embodiment of the present application, a cover plate 36 is further disposed on one side of the sun gear 31 .

[0037] In order to limit the distance between the sun gear 31 and the large gear 34 so that the sun gear 31 has a certain rotation space, a cover plate 36 can be set on one side of the sun gear 31 to limit the distance between the sun gear 31 and the large gear 34. The interior of the cover plate 36 is hollow and has sufficient rotation space.

[0038] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of this application, it should be understood that if the terms "upper", "lower", "left", "right", etc. indicate an orientation or position relationship based on the orientation or position relationship shown in the drawings, it is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0039] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A glue-cutting cam mechanism, applied to a glue binding machine, characterized in that: include: A fixing structure connected to an outer wall of the binding machine; Two glue-cutting cams, which are arranged opposite to or back to each other and connected to the fixed structure, and whose outer edges abut against the glue-scraping swing arm of the glue binding machine; Two adjustment structures, the two adjustment structures are respectively connected to the two glue-cutting cams in a transmission manner to adjust the relative angle of the glue-cutting cams; and Two driving structures are connected to the outer sides of the fixing structure and are drivingly connected to the two adjusting structures.

2. The glue-cutting cam mechanism according to claim 1, characterized in that: Each of the adjustment structures comprises a sun gear connected to the center of the rubber cutting cam, a plurality of planetary gears meshing with the sun gear, and an internal gear located outside the planetary gear and meshing with the planetary gear; It also includes a large gear located on one side of the sun gear and a main shaft meshing with the large gear, and the outer end surface of the internal gear is fixedly connected to the end surface of the large gear; The main shaft is connected to the driving structure to drive the large gear and the internal gear to rotate synchronously, thereby driving the planetary gear to rotate to adjust the relative angle of the two rubber-breaking cams.

3. The glue cutting cam mechanism according to claim 2, characterized in that: The driving structure comprises a mounting frame, motors mounted on both sides of the mounting frame, a worm drivingly connected to the motor, and a turbine drivingly connected to the worm, wherein the turbine drivingly connects to the main shaft.

4. The glue cutting cam mechanism according to any one of claims 1 to 3, characterized in that: The fixing structure comprises two fixing flanges, an installation space is provided between the two fixing flanges, and the two rubber-breaking cams and the two adjustment structures are arranged in the installation space.

5. The glue cutting cam mechanism according to claim 2, characterized in that: A cover plate is also provided on one side of the sun gear.

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