A label backing paper stripper with tight paper feeding

Abstract

The present invention provides a label backing paper stripper with tight paper feeding and retracting, which includes a front baffle, a front cover plate, a fixed clamping shaft, a free clamping shaft, a driving shaft, a driving gear, a one-way bearing and a driven gear. The front baffle is respectively provided with a first installation groove at both axial ends of the fixed clamping shaft, and the axial ends of the fixed clamping shaft are rotatably arranged on the first installation groove. The driven gear is arranged at the axial end of the fixed clamping shaft. The driving shaft is arranged on the front baffle parallel to the fixed clamping shaft. The front baffle is respectively provided with a second installation groove at both axial ends of the driving shaft, and the axial ends of the driving shaft are rotatably arranged on the second installation groove. The one-way bearing is connected between the axial end of the driving shaft and the driving gear, and the driving gear meshes with the driven gear. The diameter of the driving gear is larger than that of the driven gear. The stripper in this case can effectively keep the backing paper running tightly during both forward and reverse rotations, thereby improving the printing stability and quality.

Description

Technical Field

[0001] The present invention relates to the field of label printing, and particularly to a label backing paper stripper for tight paper feeding back. Background Art

[0002] With the popularization and application of label printers, they are widely used in the warehousing and logistics industry. Label printers include thermal transfer printers that adopt the principle of thermal transfer with a carbon ribbon, and thermal printers that adopt thermal imaging of thermal paper. After the label is thermally printed and imaged, a backing paper stripper is used to separate the self-adhesive label from the backing paper, thus greatly facilitating the use and pasting.

[0003] As the gap between label papers becomes smaller and smaller, after printing and outputting one label, a print processing of feeding back is required. Therefore, not only is it necessary to keep the backing paper taut during forward output to ensure smooth peeling, but also it is necessary to keep it taut during feeding back. If it is not taut during feeding back, it is easy to cause wrinkles in the label paper, affecting the printing quality. Summary of the Invention

[0004] The object of the present invention is to provide a label backing paper stripper for tight paper feeding back.

[0005] To achieve the object of the present invention, the present invention provides a label backing paper stripper for tight paper feeding back, which includes a front baffle, a front cover plate, a fixed clamping shaft and a free clamping shaft. The front baffle is provided with a backing paper passing groove on the front side. The fixed clamping shaft is located in the backing paper passing groove and is rotatably arranged on the front baffle. The free clamping shaft is rotatably arranged on the front cover plate. The front cover plate is hinged to the front baffle and covers the front side of the backing paper passing groove. The fixed clamping shaft and the free clamping shaft are adjacent to each other. The label backing paper stripper further includes a driving shaft, a driving gear, a one-way bearing and a driven gear. The front baffle is respectively provided with a first installation groove at both axial ends of the fixed clamping shaft. The axial end of the fixed clamping shaft is rotatably arranged in the first installation groove. The driven gear is arranged at the axial end of the fixed clamping shaft. The driving shaft is arranged on the front baffle parallel to the fixed clamping shaft. The front baffle is respectively provided with a second installation groove at both axial ends of the driving shaft. The axial end of the driving shaft is rotatably arranged in the second installation groove. The one-way bearing is connected between the axial end of the driving shaft and the driving gear. The driving gear meshes with the driven gear. The diameter of the driving gear is larger than that of the driven gear.

[0006] A further solution is that the inner ring of the one-way bearing is sleeved on the axial end of the driving shaft, and the gear inner hole of the driving gear is sleeved on the outer ring of the one-way bearing.

[0007] A further solution is that the front baffle is respectively provided with mounting plates at both axial ends of the driving shaft. One first installation groove and one second installation groove on the same side are both arranged on the mounting plate on one side. Both the first installation groove and the second installation groove are arranged as C-shaped grooves.

[0008] A further solution is that the driving gear, the one-way bearing, and the driven gear are all located outside the same mounting plate.

[0009] A further solution is that the front cover plate is hinged to the front baffle through a coupling shaft. The front baffle is respectively provided with sliding grooves extending in the vertical direction on both sides of the base paper passing slot. The coupling shaft passes through the two sliding grooves and can move vertically along the sliding grooves. The front baffle is respectively provided with clamping grooves on both sides of the base paper passing slot. The clamping grooves include a vertical groove and a horizontal groove that communicate with each other. The horizontal groove is located on the outer side of the vertical groove and is provided with an entrance. The vertical groove is provided with a clamping portion. The front cover plate is respectively provided with clamping blocks on both sides. One clamping block enters the horizontal groove from the entrance and is clamped with the clamping portion in the vertical groove.

[0010] The beneficial effect of the present invention is that in this case, a one-way bearing is arranged on the driving shaft. When printing and outputting in the forward direction, the driving gear receives an external rotational driving force. Since the diameter of the driving gear is larger than that of the driven gear, the fixed clamping shaft is driven to rotate rapidly, so that the clamped base paper is kept taut and fed. When retracting in the reverse direction, the one-way bearing comes into play, that is, the driving gear, the driven gear, and the fixed clamping shaft do not rotate. Therefore, when the label base paper is pulled back by the printer, the fixed clamping shaft is driven to rotate passively at this time, thereby effectively increasing the damping force of the label base paper during retraction to achieve tightness during retraction. The stripper of this case effectively realizes that the base paper is kept taut during both forward and reverse operations, thereby improving the printing stability and quality. Description of the Drawings

[0011] Figure 1 It is a structural diagram of an embodiment of the label base paper stripper of the present invention.

[0012] Figure 2 It is a structural diagram of an embodiment of the label base paper stripper of the present invention from another perspective.

[0013] Figure 3 It is a structural diagram of an embodiment of the label base paper stripper of the present invention with the front cover plate opened.

[0014] Figure 4 It is an exploded view of an embodiment of the label base paper stripper of the present invention.

[0015] Figure 5 It is a cross-sectional view of an embodiment of the label base paper stripper of the present invention in the stripping state.

[0016] Figure 6 It is an axial cross-sectional view of an embodiment of the label base paper stripper of the present invention.

[0017] The present invention will be further described below in conjunction with the drawings and embodiments. Detailed Embodiments

[0018] Refer to Figures 1 to 6, the label backing paper stripper 1 includes a front baffle 11, a front cover plate 12, a fixed clamping shaft 24 and a free clamping shaft 121. The front baffle 11 is provided with a backing paper passing slot 111 on the front side. The fixed clamping shaft 24 is located in the backing paper passing slot 111 and is rotatably arranged on the front baffle 11. The free clamping shaft 121 is rotatably arranged on the front cover plate 12. The front cover plate 12 is hinged to the front baffle 11 through a connecting shaft and covers the front side of the backing paper passing slot 111. The front baffle 11 is respectively provided with vertical sliding grooves 112 on both sides of the backing paper passing slot 111. The connecting shaft passes through the two sliding grooves 112 and can move vertically along the sliding grooves 112.

[0019] The front baffle 11 is respectively provided with clamping grooves 113 on both sides of the backing paper passing slot 111. The clamping grooves 113 include a vertical groove 115 and a horizontal groove 114 which are communicated with each other. The horizontal groove 114 is located on the outer side of the vertical groove 115 and is provided with an entrance. The vertical groove 115 is provided with a clamping portion 116. The front cover plate 12 is respectively provided with clamping blocks 123 on both sides. One clamping block 123 enters the horizontal groove 114 from the entrance and is engaged with the clamping portion 116 in the vertical groove 115, so as to realize the covering of the front cover plate 12, and the fixed clamping shaft 24 and the free clamping shaft 121 are adjacently arranged with interference fit to realize the clamping of the backing paper 31. When the front cover plate 12 is opened, the front cover plate 12 can be first moved upward to drive the clamping block 123 to be separated from the clamping portion 116, and then the clamping block 123 is disengaged from the horizontal groove 114 from the clamping groove 113, so as to realize the opening of the front cover plate 12, which is convenient for installing or replacing the backing paper 31.

[0020] The label backing paper stripper 1 further includes a driving shaft 21, a driving gear 23, a one-way bearing 22 and a driven gear 25. The front baffle 11 is respectively provided with mounting plates 117 on both sides. Each mounting plate 117 is provided with a first mounting groove 118 and a second mounting groove 119. Both the first mounting groove 118 and the second mounting groove 119 are arranged as C-shaped grooves. The two first mounting grooves 118 are respectively located at the axial two ends of the fixed clamping shaft 24. The axial end of the fixed clamping shaft 24 is rotatably arranged on the first mounting groove 118 through a shaft sleeve 27. The driven gear 25 is arranged at the axial end of the fixed clamping shaft 24. The driven gear 25 is drivingly connected with the D-shaped column at the axial end through a D-shaped hole.

[0021] The two second mounting grooves 119 are respectively located at the axial two ends of the drive shaft 21. The axial end of the drive shaft 21 is rotatably arranged on the second mounting groove 119 through a shaft sleeve 26. The drive shaft 21 is parallel to the fixed clamping shaft 24. The one-way bearing 22 is connected between the axial end of the drive shaft 21 and the drive gear 23. Specifically, the inner ring of the one-way bearing 22 is sleeved on the axial end of the drive shaft 21, and the inner ring sleeve is in contact and adjacent to the axial end through the circumferential surface. The gear inner hole of the drive gear 23 is sleeved on the outer ring of the one-way bearing 22, and the gear inner hole is in contact and adjacent to the outer ring through the circumferential surface. The drive shaft 21 is located above the fixed clamping shaft 24, and the drive gear 23 is located above the driven gear 25. The drive gear 23 meshes with the driven gear 25. The diameter of the drive gear 23 is larger than that of the driven gear 25. The drive gear 23, the one-way bearing 22 and the driven gear 25 are all located outside the same mounting plate 117.

[0022] When peeling the label paper, a peeling piece 13 is arranged at the upper end of the front baffle 11. The label paper includes a base paper 31 and a label 32. The base paper 31 extends toward the base paper passing groove 111 after passing through the peeling piece 13, and then the base paper 31 is clamped by the fixed clamping shaft 24 and the free clamping shaft 121. When printing and outputting in the forward direction, the drive gear receives an external rotational driving force. Since the diameter of the drive gear is larger than that of the driven gear, the fixed clamping shaft is driven to rotate rapidly, so that the clamped base paper is kept taut for paper feeding, and the label 32 is separated from the base paper at the peeling piece 13.

[0023] When retracting in the reverse direction, the one-way bearing 22 comes into play, that is, the drive gear 23, the driven gear 25 and the fixed clamping shaft 24 do not rotate. Therefore, when the label base paper is pulled back by the printer, at this time the fixed clamping shaft is pulled and rotated passively, so as to effectively increase the damping force of the label base paper during retraction, so as to achieve tautness during retraction. The peeling device in this case effectively realizes that the base paper is kept taut during both forward and reverse rotations, thereby improving the printing stability and quality.

Claims

1. A label backing paper stripper with tight paper feeding back, comprising a front baffle, a front cover plate, a fixed clamping shaft and a free clamping shaft. The front baffle is provided with a backing paper passing slot on the front side. The fixed clamping shaft is located in the backing paper passing slot and is rotatably arranged on the front baffle. The free clamping shaft is rotatably arranged on the front cover plate. The front cover plate is hinged to the front baffle and covers the front side of the backing paper passing slot. The fixed clamping shaft and the free clamping shaft are adjacent to each other. Characterized in that: The label backing paper stripper further comprises a drive shaft, a drive gear, a one-way bearing and a driven gear. The front baffle is respectively provided with a first mounting groove at both axial ends of the fixed clamping shaft. The axial end of the fixed clamping shaft is rotatably arranged on the first mounting groove. The driven gear is arranged at the axial end of the fixed clamping shaft. The drive shaft is arranged on the front baffle parallel to the fixed clamping shaft. The front baffle is respectively provided with a second mounting groove at both axial ends of the drive shaft. The axial end of the drive shaft is rotatably arranged on the second mounting groove. The one-way bearing is connected between the axial end of the drive shaft and the drive gear. The drive gear meshes with the driven gear. The diameter of the drive gear is larger than that of the driven gear. The front cover plate is hinged to the front baffle through a connecting shaft. The front baffle is respectively provided with a chute extending in the vertical direction on both sides of the backing paper passing slot. The connecting shaft passes through the two chutes and can move in the vertical direction along the chutes. The front baffle is respectively provided with a clamping groove on both sides of the backing paper passing slot. The clamping groove comprises a vertical groove and a horizontal groove which are communicated with each other. The horizontal groove is located on the outer side of the vertical groove and is provided with an entrance. The vertical groove is provided with a clamping part. The front cover plate is respectively provided with a clamping block on both sides. One of the clamping blocks enters the horizontal groove from the entrance and is clamped with the clamping part in the vertical groove.

2. The label backing paper stripper according to claim 1, characterized in that: The inner ring of the one-way bearing is sleeved on the axial end of the drive shaft, and the gear inner hole of the drive gear is sleeved on the outer ring of the one-way bearing.

3. The label backing paper stripper according to claim 1, characterized in that: The front baffle is respectively provided with a mounting plate at both axial ends of the drive shaft. One of the first mounting groove and one of the second mounting groove on the same side are both arranged on the mounting plate on one side. The first mounting groove and the second mounting groove are both arranged as C-shaped grooves.

4. The label backing paper stripper according to claim 3, characterized in that: The drive gear, the one-way bearing and the driven gear are all located outside the same mounting plate.

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