Printing medium clamping device

Abstract

The utility model discloses a printing medium clamping device, which relates to the technical field of clamping devices and comprises a mounting disc and a clamping component. A connecting pipe is fixed to the left end of the mounting disc, an extrusion assembly is mounted in the connecting pipe, a shifting assembly is mounted at the left end of the extrusion assembly, and a fastening assembly is mounted at the left end of the connecting pipe; the clamping assembly comprises strip-shaped openings, clamping frames, fixing plates and reset springs, the strip-shaped openings which are evenly distributed are formed in the circumferential face of the connecting pipe, the clamping frames are slidably connected into the strip-shaped openings, the two corresponding fixing plates are arranged in the clamping frames, the two fixing plates are fixed into the strip-shaped openings, and the reset springs are arranged in the strip-shaped openings. And reset springs are fixed to the side faces of the fixing plates, the two reset springs are both fixed into the clamping frames, the extrusion assembly is attached to all the clamping frames, printing roll paper can be firmly fixed, and meanwhile, the printing roll paper can be rapidly disassembled and replaced.

Description

Technical Field

[0001] The utility model relates to the technical field of clamping devices, in particular to a printing medium clamping device. Background Art

[0002] With the popularization of thermal printers, they are not only used in bank ATMs, supermarket cashiers and e-commerce delivery offices, but also in the rapidly growing e-commerce and express delivery industries, which have higher requirements for the stability, durability, and printing accuracy and speed of printers.

[0003] Before printing, the printing medium needs to be clamped and fixed. The printing medium is also commonly known as printing paper, labels or photo paper. Due to the huge printing volume, the printing paper roll is also relatively large. The existing clamping device is not firm enough when fixing the printing paper roll, and it is cumbersome to disassemble and replace. Therefore, we propose a printing medium clamping device. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the existing defects and provide a printing medium clamping device, which can firmly fix the printing roll paper and can be quickly disassembled and replaced, and can effectively solve the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a printing medium clamping device, comprising a mounting plate and a clamping assembly;

[0006] Installation plate: a connecting pipe is fixed at the left end, an extrusion assembly is installed inside the connecting pipe, a toggle assembly is installed at the left end of the extrusion assembly, and a fastening assembly is installed at the left end of the connecting pipe;

[0007] Clamping assembly: comprises a strip opening, a clamping frame, a fixing plate and a reset spring. The circumferential surface of the connecting tube is provided with evenly distributed strip openings. The inside of the strip opening is slidably connected with the clamping frame. Two corresponding fixing plates are arranged inside the clamping frame. Both fixing plates are fixed inside the strip opening. Reset springs are fixed on the sides of the fixing plates. Both reset springs are fixed inside the clamping frame. The extrusion assembly fits with all the clamping frames. The printing roll paper is centrally clamped by setting the clamping assembly so that it is firmly fixed.

[0008] Furthermore, the extrusion assembly includes an extrusion cone, a bidirectional screw and a limit rod. Two corresponding extrusion cones are arranged inside the connecting tube. The two extrusion cones are respectively fitted with the side surfaces of all the clamping frames. A threaded hole is opened in the middle of the extrusion cone. The threads of the two threaded holes are opposite. The internal threads of the two threaded holes are connected with a bidirectional screw. The bidirectional screw is rotatably connected to the end surface of the mounting disk. Two corresponding limit holes are opened on the edge of the extrusion cone. Two corresponding limit rods are slidably connected inside the four limit holes. The two limit rods are fixed to the left end of the mounting disk. All the clamping frames are extruded by setting the extrusion assembly.

[0009] Furthermore, the toggle assembly includes a swivel, an L-shaped slider and a support spring. A swivel is fixed to the left end of the surface of the bidirectional screw. Two corresponding sliding grooves are provided on the circumferential surface of the swivel. L-shaped sliders are slidably connected to the inside of the two sliding grooves. A support spring is fixed to the side of the L-shaped slider. The support spring is fixed to the inside of the sliding groove. The bidirectional screw is driven to rotate by setting the toggle assembly.

[0010] Furthermore, the fastening assembly includes an arc-shaped anti-slip plate and an anti-slip ring. The arc-shaped anti-slip plate is fixed on the side of the L-shaped slider, and the anti-slip ring is fixed on the left end of the connecting tube. Both arc-shaped anti-slip plates are in contact with the inner wall of the anti-slip ring, and the bidirectional screw is fixed by setting the fastening assembly.

[0011] Furthermore, a fixing ring is fixed on the circumferential surface of the installation disk, and evenly distributed fixing holes are opened at the left end of the fixing ring. The installation disk is connected to the printer by providing the fixing ring and the fixing holes.

[0012] Compared with the prior art, the beneficial effects of the present invention are: the printing medium clamping device has the following advantages:

[0013] 1. By setting the connecting tube, the printing paper roll to be clamped can be sleeved on the circumferential surface of the connecting tube when in use. After the sleeve connection is completed, the bidirectional screw is rotated to make the two extrusion cones approach to squeeze the two ends of all the clamping frames. After the extrusion, all the clamping frames are moved to the outside of the connecting tube and fit tightly with the inner wall of the printing paper roll. After fitting, the printing paper roll can be clamped and fixed firmly;

[0014] 2 When it needs to be replaced, the bidirectional screw can be turned to move the two extrusion cones away. At this time, all the clamping frames re-enter the interior of all the strip openings under the action of all the reset springs, and then the printing paper roll can be disassembled and replaced very conveniently. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the front structure of the utility model;

[0016] Figure 2 It is a front side sectional view of the utility model;

[0017] Figure 3 It is an enlarged view of point A of the present utility model.

[0018] In the figure: 1 mounting plate, 2 connecting pipe, 3 clamping assembly, 31 strip opening, 32 clamping frame, 33 fixing plate, 34 return spring, 4 extrusion assembly, 41 extrusion cone, 42 bidirectional screw, 43 limit rod, 5 toggle assembly, 51 swivel, 52 L-shaped slider, 53 supporting spring, 6 fastening assembly, 61 arc-shaped anti-slip plate, 62 anti-slip ring, 7 fixing ring, 8 fixing hole. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figures 1-3 ,This embodiment provides a technical solution: a printing medium clamping device, including a mounting plate 1 and a clamping assembly 3;

[0021] Mounting disk 1: A connecting tube 2 is fixed at the left end, an extrusion assembly 4 is installed inside the connecting tube 2, a toggle assembly 5 is installed at the left end of the extrusion assembly 4, a fastening assembly 6 is installed at the left end of the connecting tube 2, the extrusion assembly 4 includes an extrusion cone 41, a bidirectional screw 42 and a limit rod 43, two corresponding extrusion cones 41 are arranged inside the connecting tube 2, the two extrusion cones 41 are respectively fitted with the side surfaces of all the clamping frames 32, a threaded hole is provided in the middle of the extrusion cone 41, the threads of the two threaded holes are opposite, the internal threads of the two threaded holes are connected with the bidirectional screw 42, the bidirectional screw 42 is rotatably connected to the end surface of the mounting disk 1, two corresponding limit holes are provided on the edge of the extrusion cone 41, the internal sliding connection of the four limit holes is connected with two corresponding limit rods 43, and the two limit rods 43 are fixed to the mounting disk 1 The left end of the toggle assembly 5 includes a swivel 51, an L-shaped slider 52 and a support spring 53. The left end of the surface of the bidirectional screw 42 is fixed with a swivel 51. Two corresponding slide grooves are provided on the circumferential surface of the swivel 51. The insides of the two slide grooves are slidably connected with L-shaped sliders 52. The side of the L-shaped slider 52 is fixed with a support spring 53. The support spring 53 is fixed inside the slide groove. The fastening assembly 6 includes an arc-shaped anti-slip plate 61 and an anti-slip ring 62. The side of the L-shaped slider 52 is fixed with an arc-shaped anti-slip plate 61. The left end of the connecting pipe 2 is fixed with an anti-slip ring 62. The two arc-shaped anti-slip plates 61 are both fitted with the inner wall of the anti-slip ring 62. By setting the extrusion assembly 4, all the clamping frames 32 are squeezed, and the bidirectional screw 42 is fixed by setting the fastening assembly 6. The bidirectional screw 42 is driven to rotate by setting the toggle assembly 5;

[0022] The clamping assembly 3 comprises a strip opening 31, a clamping frame 32, a fixing plate 33 and a return spring 34. The circumferential surface of the connecting tube 2 is provided with evenly distributed strip openings 31. The inside of the strip opening 31 is slidably connected with the clamping frame 32. Two corresponding fixing plates 33 are arranged inside the clamping frame 32. The two fixing plates 33 are both fixed inside the strip opening 31. The sides of the fixing plates 33 are fixed with return springs 34. The two return springs 34 are both fixed inside the clamping frame 32. The extrusion assembly 4 fits with all the clamping frames 32. By setting the clamping assembly 3, the printing roll paper is centrally clamped so that it is firmly fixed.

[0023] Wherein: a fixing ring 7 is fixed on the circumferential surface of the installation disk 1, and evenly distributed fixing holes 8 are opened at the left end of the fixing ring 7. The installation disk 1 is connected to the printer by setting the fixing ring 7 and the fixing holes 8.

[0024] The working principle of a printing medium clamping device provided by the present utility model is as follows: When in use, a printing paper roll to be clamped can be sleeved on the circumferential surface of the connecting pipe 2. After sleeving, press the two L-shaped sliders 52 to make the two L-shaped sliders 52 approach each other. After the two L-shaped sliders 52 approach each other, rotate the bidirectional screw 42 through the rotating ring 51, so that the two extrusion frustums 41 approach each other to extrude both ends of all the clamping frames 32. After extrusion, all the clamping frames 32 move to the outside of the connecting pipe 2 and tightly fit against the inner wall of the printing paper roll. After fitting, the printing paper roll can be clamped and firmly fixed. After the printing roll paper is fixed, the two L-shaped sliders 52 will drive the two arc-shaped anti-slip plates 61 and the anti-slip ring 62 to approach each other under the action of the two support springs 53. After approaching, the stability of the bidirectional screw 42 can be ensured. When it needs to be replaced, the bidirectional screw 42 can be rotated to make the two extrusion frustums 41 move away from each other. At this time, all the clamping frames 32 re-enter the interior of all the strip-shaped openings 31 under the action of all the reset springs 34, and then the printing paper roll can be extremely conveniently disassembled and replaced.

[0025] The above are only the embodiments of the present utility model, and thus do not limit the patent scope of the present utility model. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied in other related technical fields, shall be similarly included in the patent protection scope of the present utility model.

Claims

1. A printing medium clamping device, characterized in that: It comprises a mounting plate (1) and a clamping assembly (3); The mounting plate (1) has a connecting tube (2) fixed at the left end, an extrusion assembly (4) installed inside the connecting tube (2), a toggle assembly (5) installed at the left end of the extrusion assembly (4), and a fastening assembly (6) installed at the left end of the connecting tube (2); The clamping assembly (3) comprises a strip opening (31), a clamping frame (32), a fixing plate (33) and a return spring (34). The circumferential surface of the connecting tube (2) is provided with evenly distributed strip openings (31). The interior of the strip opening (31) is slidably connected to the clamping frame (32). Two corresponding fixing plates (33) are arranged inside the clamping frame (32). Both fixing plates (33) are fixed inside the strip opening (31). The sides of the fixing plates (33) are fixed with return springs (34). Both return springs (34) are fixed inside the clamping frame (32). The extrusion assembly (4) fits with all the clamping frames (32).

2. A printing medium clamping device according to claim 1, characterized in that: The extrusion assembly (4) comprises an extrusion cone (41), a bidirectional screw (42) and a limiting rod (43). Two corresponding extrusion cones (41) are arranged inside the connecting tube (2). The two extrusion cones (41) are respectively fitted with the side surfaces of all the clamping frames (32). A threaded hole is provided in the middle of the extrusion cone (41). The threads of the two threaded holes are opposite to each other. The internal threads of the two threaded holes are connected to the bidirectional screw (42). The bidirectional screw (42) is rotatably connected to the end surface of the mounting plate (1). Two corresponding limiting holes are provided on the edge of the extrusion cone (41). Two corresponding limiting rods (43) are slidably connected inside the four limiting holes. The two limiting rods (43) are fixed to the left end of the mounting plate (1).

3. A printing medium clamping device according to claim 2, characterized in that: The toggle assembly (5) comprises a rotating ring (51), an L-shaped slider (52) and a support spring (53); the rotating ring (51) is fixed to the left end of the surface of the bidirectional screw (42); two corresponding slide grooves are provided on the circumferential surface of the rotating ring (51); the interiors of the two slide grooves are slidably connected with the L-shaped slider (52); the side of the L-shaped slider (52) is fixed with a support spring (53); the support spring (53) is fixed inside the slide groove.

4. A printing medium clamping device according to claim 3, characterized in that: The fastening assembly (6) comprises an arc-shaped anti-slip plate (61) and an anti-slip ring (62); the arc-shaped anti-slip plate (61) is fixed on the side of the L-shaped sliding block (52); the anti-slip ring (62) is fixed on the left end of the connecting pipe (2); and the two arc-shaped anti-slip plates (61) are in contact with the inner wall of the anti-slip ring (62).

5. A printing medium clamping device according to claim 1, characterized in that: A fixing ring (7) is fixed on the circumferential surface of the mounting plate (1), and evenly distributed fixing holes (8) are formed at the left end of the fixing ring (7).

Images