Positioning device for laser bar code scanner

Abstract

The utility model discloses a positioning device for a laser bar code scanner, and relates to the technical field of scanner positioning. The conveying device comprises a conveying mechanism and a base, a positioning mechanism is arranged on the right side of the conveying mechanism, a rotating wheel is rotationally connected to the inner wall of the base, a fixed wheel is in contact with the inner wall of the rotating wheel, and a rotating rod is fixedly connected to the inner wall of the fixed wheel. By arranging the baffle, the fixed wheel rotates to drive the rotating rod to rotate, when the rotating rod rotates, the first gear is driven to rotate, the multi-face rack is pulled to the left side, when the multi-face rack moves to the left side, the toothed bar is driven to rotate, and the toothed bar rotates to drive the connecting rod to rotate; when the connecting rod rotates, the baffle is driven to rotate and the torque spring is driven to rotate, so that the torque spring is tightened, blocking is cancelled through rotation of the baffle, articles can be limited by the baffle and reach the supporting table, and the situation that too many articles completely enter a code scanning area at a time, and code scanning cannot be carried out normally is prevented.

Description

Technical Field

[0001] The utility model belongs to the technical field of scanner positioning, and particularly relates to a positioning device for a laser bar code scanner. Background Art

[0002] In a digital life, barcodes are equivalent to identity information for products. During the production or sale of products, barcodes need to be scanned to input and read product information.

[0003] When the existing laser bar code scanners scan items, they are carried out sequentially. However, when there are too many items, the same item may be scanned multiple times, and the accumulation of items in the scanning area will seriously affect the scanning progress. Therefore, we provide a positioning device for a laser bar code scanner. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a positioning device for a laser bar code scanner. By rotating the baffle to cancel the block, the item can pass through the restriction of the baffle and reach the support table, preventing too many items from entering the scanning area all at once, which makes the scanning unable to proceed normally. It solves the problem that when there are too many items, the same item may be scanned multiple times, and the accumulation of items in the scanning area will seriously affect the scanning progress.

[0005] To solve the above technical problems, the utility model is realized through the following technical solutions:

[0006] The utility model is a positioning device for a laser bar code scanner, including a conveying mechanism and a base. A positioning mechanism is arranged on the right side of the conveying mechanism. A rotating wheel is rotatably connected to the inner wall of the base. A fixed wheel is in contact with the inner wall of the rotating wheel. A rotating rod is fixedly connected to the inner wall of the fixed wheel. A first gear is fixedly connected to the front and back of the rotating wheel. There are two first gears in total, and the two first gears are symmetrically arranged with the rotating rod as the center. The parts included in the outer surfaces of the two first gears are the same.

[0007] The bottom of the first gear is meshed with a multi-faceted rack. The front of the multi-faceted rack is meshed with a toothed rod. A connecting rod is fixedly connected to the top of the toothed rod. The bottom of the toothed rod is rotatably connected to the inner wall of the base. A baffle is fixedly connected to the outer surface of the connecting rod. By rotating the baffle to cancel the block, the item can pass through the restriction of the baffle and reach the support table, preventing too many items from entering the scanning area all at once, which makes the scanning unable to proceed normally.

[0008] Furthermore, an adjusting column is fixedly connected to the top of the base. The top of the connecting rod penetrates through the adjusting column and extends to the inside. A torsion spring is fixedly connected to the top of the connecting rod. The torsion spring is used to reset the baffle when there is no limit.

[0009] Furthermore, the top of the torque spring is fixedly connected to the inner wall of the top of the adjusting column, and an extrusion groove is opened inside the rotating wheel. There are a number of extrusion grooves in total, and the extrusion grooves are arranged in a circular array with the rotating rod as the center. When there are objects in the scanning area, the rotation of the baffle will be blocked by the objects and cannot be rotated.

[0010] Furthermore, the parts contained in the several extrusion grooves are the same, a spring is fixedly connected inside the extrusion groove, a convex ball is fixedly connected to the bottom of the spring, a ball groove is opened inside the fixed wheel, the inner wall of the ball groove is adapted to the outer surface of the convex ball, and the rotating wheel can drive the fixed wheel to rotate through the cooperation between the convex ball and the ball groove.

[0011] Furthermore, a motor is fixedly connected to the left side of the front side of the base, a rotating shaft is fixedly connected to the output end of the back side of the motor, the back side of the rotating shaft passes through the base and extends to the inside, and a conveyor belt is transmission-connected to the outer surface of the rotating shaft, which conveys the items to the code scanning area through the conveyor belt.

[0012] Furthermore, the positioning mechanism includes a second motor fixedly connected to the front side of the base, a threaded rod fixedly connected to the output end on the back side of the second motor, the back side of the threaded rod passes through the base and extends to the interior, a positioning plate is threadedly connected to the outer surface of the threaded rod, a sliding groove is provided on the inner wall of the base, the inner wall of the sliding groove is slidably connected to the outer surface of the positioning plate, a gear is fixedly connected to the outer surface of the threaded rod, a rack is meshedly connected to the bottom of the gear, and the support platform is driven to move by the movement of the rack.

[0013] Furthermore, a fixed rod is fixedly connected to the back of the rack, a movable groove is opened inside the base, the inside of the movable groove is slidably connected to the outer surface of the fixed rod, and a support platform is fixedly connected to the top of the fixed rod. The support platform is moved to the right to transport the items, so that the positioning plate can position the items, preventing the situation where the items cannot be positioned because the distance between the items and the positioning plate is too far.

[0014] The utility model has the following beneficial effects:

[0015] 1. The utility model sets a baffle, and drives the rotating rod to rotate by rotating the fixed wheel. When the rotating rod rotates, it drives the gear to rotate and pulls the multi-faceted rack to the left. When the multi-faceted rack moves to the left, it drives the gear rod to rotate. The connecting rod is rotated by the gear rod. When the connecting rod rotates, it drives the baffle to rotate and drives the torque spring to rotate, so that it is tightened. The baffle is rotated to cancel the obstruction, so that the objects can pass through the restriction of the baffle and reach the support table, preventing too many objects from entering the scanning area at one time, making it impossible to scan the code normally.

[0016] 2. In the present utility model, by providing a support platform, when the positioning plates approach each other, the threaded rod drives the gear to rotate. The rotation of the gear drives the rack to move to the right, and then the movement of the rack to the right drives the fixed rod to move to the right. Subsequently, the movement of the fixed rod to the right drives the support platform and the article located on its top to move to the right. And vice versa when the positioning plates move away from each other. The article is conveyed by the movement of the support platform to the right, enabling the positioning plates to position the article and preventing the situation where the article cannot be positioned due to a large distance from the positioning plates.

[0017] Of course, it is not necessary for any product implementing the present utility model to simultaneously achieve all the above-mentioned advantages. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0019] Figure 1 Schematic diagram of the overall structure of the present utility model;

[0020] Figure 2 Schematic diagram of the front cross-sectional structure of the base of the present utility model;

[0021] Figure 3 For the present utility model Figure 2 Enlarged schematic diagram of A in the present utility model;

[0022] Figure 4 Schematic diagram of the front cross-sectional structure of the first gear of the present utility model;

[0023] Figure 5 Schematic diagram of the top cross-sectional structure of the movable groove of the present utility model.

[0024] In the drawings, the list of components represented by each reference numeral is as follows:

[0025] 1. Conveying mechanism; 101. Base; 102. Conveyor belt; 103. Rotating shaft; 104. Rotating rod; 105. Fixed wheel; 106. Rotating wheel; 107. Extrusion groove; 108. Spring; 109. Convex ball; 110. Ball groove; 111. First gear; 112. Tooth bar; 113. Connecting rod; 114. Adjusting column; 115. Torque spring; 116. Baffle; 117. First motor; 118. Multi-faceted rack; 2. Positioning mechanism; 201. Second motor; 202. Threaded rod; 203. Positioning plate; 204. Movable groove; 205. Fixed rod; 206. Support platform; 207. Gear; 208. Rack; 209. Sliding groove. Detailed implementation manners

[0026] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0027] Please refer to Figures 1-5 As shown, the present utility model is a positioning device for a laser barcode scanner, including a conveying mechanism 1 and a base 101. A positioning mechanism 2 is arranged on the right side of the conveying mechanism 1. A rotating wheel 106 is rotatably connected to the inner wall of the base 101. A fixed wheel 105 is in contact with the inner wall of the rotating wheel 106. A rotating rod 104 is fixedly connected to the inner wall of the fixed wheel 105. A first gear 111 is fixedly connected to the front and back of the rotating wheel 106. There are two first gears 111 in total, and the two first gears 111 are symmetrically arranged with the rotating rod 104 as the center. The parts included in the outer surfaces of the two first gears 111 are the same;

[0028] The bottom of the first gear 111 is meshed with a multi-faceted rack 118. The front of the multi-faceted rack 118 is meshed with a tooth bar 112. The top of the tooth bar 112 is fixedly connected to a connecting rod 113. The bottom of the tooth bar 112 is rotatably connected to the inner wall of the base 101. A baffle 116 is fixedly connected to the outer surface of the connecting rod 113. By rotating the fixed wheel 105 to drive the rotation of the rotating rod 104, when the rotating rod 104 rotates, it drives the rotation of the first gear 111 and pulls the multi-faceted rack 118 to the left. When the multi-faceted rack 118 moves to the left, it drives the rotation of the tooth bar 112. By rotating the tooth bar 112, it drives the rotation of the connecting rod 113. When the connecting rod 113 rotates, it drives the rotation of the baffle 116 and drives the torsion spring 115 to rotate, so that it winds up. By rotating the baffle 116 to cancel the block, the article can pass through the restriction of the baffle 116 and reach the support table 206, preventing too many articles from entering the scanning area all at once, making the scanning unable to proceed normally.

[0029] An adjusting column 114 is fixedly connected to the top of the base 101. The top of the connecting rod 113 penetrates through the adjusting column 114 and extends to the inside. A torsion spring 115 is fixedly connected to the top of the connecting rod 113.

[0030] The top of the torsion spring 115 is fixedly connected to the inner wall of the top of the adjusting column 114. An extrusion groove 107 is formed inside the rotating wheel 106. There are several extrusion grooves 107 in total, and the several extrusion grooves 107 are annularly arranged with the rotating rod 104 as the center.

[0031] The parts contained inside several extrusion grooves 107 are the same. A spring 108 is fixedly connected inside the extrusion groove 107. The bottom of the spring 108 is fixedly connected with a convex ball 109. A ball groove 110 is formed inside the fixed wheel 105, and the inner wall of the ball groove 110 is adapted to the outer surface of the convex ball 109.

[0032] On the left side of the front surface of the base 101, a first motor 117 is fixedly connected. The output end of the first motor 117 on the back is fixedly connected with a rotating shaft 103. The back of the rotating shaft 103 penetrates through the base 101 and extends to the inside. The outer surface of the rotating shaft 103 is drivingly connected with a conveyor belt 102.

[0033] The positioning mechanism 2 includes a second motor 201 fixedly connected to the front surface of the base 101. The output end of the second motor 201 on the back is fixedly connected with a threaded rod 202. The back of the threaded rod 202 penetrates through the base 101 and extends to the inside.

[0034] A positioning plate 203 is threadedly connected to the outer surface of the threaded rod 202. A sliding groove 209 is formed on the inner wall of the base 101, and the inner wall of the sliding groove 209 is slidably connected to the outer surface of the positioning plate 203. A gear 207 is fixedly connected to the outer surface of the threaded rod 202, and a rack 208 is meshed and connected to the bottom of the gear 207.

[0035] A fixed rod 205 is fixedly connected to the back of the rack 208. An activity groove 204 is formed inside the base 101, and the inside of the activity groove 204 is slidably connected to the outer surface of the fixed rod 205. The top of the fixed rod 205 is fixedly connected with a support platform 206. While the positioning plates 203 approach each other, the threaded rod 202 will drive the gear 207 to rotate. By the rotation of the gear 207, the rack 208 is driven to move to the right. Then, by the movement of the rack 208 to the right, the fixed rod 205 is driven to move to the right. Then, by the movement of the fixed rod 205 to the right, the support platform 206 and the article located on its top are driven to move to the right. And vice versa when the positioning plates 203 move away from each other. The article is conveyed by the movement of the support platform 206 to the right, so that the positioning plates 203 can position the article, preventing the situation where the article cannot be positioned because the distance between the article and the positioning plates 203 is too far.

[0036] A specific application of this embodiment is as follows: The staff first starts the first motor 117. The start of the first motor 117 drives the rotation of the rotating shaft 103. Then, the rotation of the rotating shaft 103 drives the rotation of the conveyor belt 102. Then, the staff places the scanned item on the conveyor belt 102, and the device is conveyed to the right through the conveyor belt 102. When the item moves to the right, it will contact the rotating wheel 106 and drive its rotation. At this time, the convex ball 109 is in the ball groove 110. The rotation of the baffle 116 drives the circumferential rotation of the convex ball 109 and pushes the fixed wheel 105 to rotate. Then, the rotation of the fixed wheel 105 drives the rotation of the rotating rod 104. When the rotating rod 104 rotates, it drives the rotation of the first gear 111 and pulls the multi-faceted rack 118 to the left. When the multi-faceted rack 118 moves to the left, it drives the rotation of the toothed rod 112. The rotation of the toothed rod 112 drives the rotation of the connecting rod 113. When the connecting rod 113 rotates, it drives the rotation of the baffle 116 and drives the rotation of the torsion spring 115 to wind it up. By the rotation of the baffle 116, the blockage is cancelled, so that the item can pass through the restriction of the baffle 116 and reach the support table 206. Then, the second motor 201 is started. The rotation of the second motor 201 drives the rotation of the threaded rod 202. Since the threaded rod 202 is provided with double threads and the threads are opposite, when the threaded rod 202 rotates, it will drive the positioning plates 203 to approach or move away from each other. While the positioning plates 203 approach each other, the threaded rod 202 will drive the gear 207 to rotate. The rotation of the gear 207 drives the rack 208 to move to the right. Then, the movement of the rack 208 to the right drives the fixed rod 205 to move to the right. Then, the movement of the fixed rod 205 to the right drives the support table 206 and the item on its top to move to the right. And vice versa when the positioning plates 203 move away from each other. The item is conveyed by the movement of the support table 206 to the right, so that the positioning plates 203 can position the item, preventing the situation where the item cannot be positioned because the distance between the item and the positioning plates 203 is too far. During the conveying of some longer items, due to the length, the baffle 116 will rotate to the innermost position. When the baffle 116 rotates to the innermost position, it will be stuck by the limiting plate and stop rotating. At the same time, the fixed wheel 105 and the rotating rod 104 are both in a state where they cannot rotate. Since the convex ball 109 is spherical and there is an external force to drive the rotation of the rotating wheel 106, the convex ball 109 will enter the extrusion groove 107 and separate from the ball groove 110, so that the rotating wheel 106 can continue to rotate. When the item separates from the rotating wheel 106, the torsion spring 115 resets and drives the baffle 116 to reverse. However, during the reverse process, the baffle 116 will contact both sides of the item and cannot be reset until the item completely enters the scanning area and cancels the contact with the baffle 116, then it can be reset.

[0037] In the description of this specification, the descriptions referring to the terms "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples.

[0038] The preferred embodiments of the present utility model disclosed above are only used to help illustrate the present utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the present utility model to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification in order to better explain the principle and practical application of the present utility model, so that those skilled in the relevant technical field can well understand and utilize the present utility model. The present utility model is only limited by the claims and their full scope and equivalents.

Claims

1. A positioning device for a laser barcode scanner, comprising a conveying mechanism (1) and a base (101), wherein a positioning mechanism (2) is arranged on the right side of the conveying mechanism (1), and a rotating wheel (106) is rotatably connected to the inner wall of the base (101), characterized in that: The inner wall of the rotating wheel (106) contacts a fixed wheel (105), the inner wall of the fixed wheel (105) is fixedly connected to a rotating rod (104), the front and back sides of the rotating wheel (106) are fixedly connected to gear one (111), there are two gears one (111) in total, the two gears one (111) are symmetrically arranged with the rotating rod (104) as the center, and the parts included on the outer surfaces of the two gears one (111) are the same; The bottom of the gear 1 (111) is meshedly connected to a multi-faceted rack (118), the front of the multi-faceted rack (118) is meshedly connected to a gear rod (112), the top of the gear rod (112) is fixedly connected to a connecting rod (113), the bottom of the gear rod (112) is rotatably connected to the inner wall of the base (101), and the outer surface of the connecting rod (113) is fixedly connected to a baffle (116).

2. A positioning device for a laser barcode scanner according to claim 1, characterized in that: The top of the base (101) is fixedly connected to an adjustment column (114), the top of the connecting rod (113) passes through the adjustment column (114) and extends to the inside, and the top of the connecting rod (113) is fixedly connected to a torque spring (115).

3. A positioning device for a laser barcode scanner according to claim 2, characterized in that: The top of the torque spring (115) is fixedly connected to the inner wall of the top of the adjustment column (114); an extrusion groove (107) is provided inside the rotating wheel (106); a plurality of the extrusion grooves (107) are provided, and the plurality of the extrusion grooves (107) are arranged in a circular array with the rotating rod (104) as the center.

4. A positioning device for a laser barcode scanner according to claim 3, characterized in that: The parts contained in the plurality of extrusion grooves (107) are the same. A spring (108) is fixedly connected inside the extrusion groove (107). A convex ball (109) is fixedly connected to the bottom of the spring (108). A ball groove (110) is provided inside the fixed wheel (105). The inner wall of the ball groove (110) is adapted to the outer surface of the convex ball (109).

5. A positioning device for a laser barcode scanner according to claim 4, characterized in that: A motor 1 (117) is fixedly connected to the left side of the front of the base (101); a rotating shaft (103) is fixedly connected to the output end of the rear side of the motor 1 (117); the rear side of the rotating shaft (103) passes through the base (101) and extends to the inside; and a conveyor belt (102) is transmission-connected to the outer surface of the rotating shaft (103).

6. A positioning device for a laser barcode scanner according to claim 1, characterized in that: The positioning mechanism (2) comprises a second motor (201) fixedly connected to the front side of the base (101), a threaded rod (202) fixedly connected to the output end at the back side of the second motor (201), and the back side of the threaded rod (202) passes through the base (101) and extends to the inside.

7. A positioning device for a laser barcode scanner according to claim 6, characterized in that: The outer surface of the threaded rod (202) is threadedly connected to a positioning plate (203); the inner wall of the base (101) is provided with a slide groove (209); the inner wall of the slide groove (209) is slidably connected to the outer surface of the positioning plate (203); the outer surface of the threaded rod (202) is fixedly connected to a gear (207); the bottom of the gear (207) is meshingly connected to a rack (208).

8. A positioning device for a laser barcode scanner according to claim 7, characterized in that: The back of the rack (208) is fixedly connected to a fixed rod (205), a movable groove (204) is provided inside the base (101), the inside of the movable groove (204) is slidably connected to the outer surface of the fixed rod (205), and the top of the fixed rod (205) is fixedly connected to a support platform (206).

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