Motor inkjet device

Abstract

The invention discloses a motor inkjet device, comprising a frame, an inkjet mechanism for inkjet coding a motor, a carrying jig and an error prevention mechanism, wherein a conveyor belt for conveying the carrying jig is provided on the frame, and the inkjet mechanism is arranged on the frame; a placement groove for placing the motor is provided on the top of the carrying jig; the error prevention mechanism comprises a baffle assembly, the baffle assembly comprises a first baffle, a second baffle and a height-limiting baffle, the height-limiting baffle is provided on the frame and one end of which is bent and extended above the conveyor belt, the height-limiting baffle and the inkjet mechanism are arranged in sequence along the conveying direction of the conveyor belt, the first baffle and the second baffle are respectively arranged at two opposite ends of the placement groove; the height of the height-limiting baffle is greater than the height of the first baffle and less than the sum of the outer shell radius of the motor and the height of the first baffle, the height of the first baffle is greater than the height of the second baffle, a first notch with an upward opening is provided on the first baffle, a second notch with an upward opening is provided on the second baffle, and the depth of the first notch is greater than the depth of the second notch.

Description

Technical Field

[0001] The present invention relates to the technical field of motor inkjet coding, and in particular to a motor inkjet coding device. Background Art

[0002] During the motor manufacturing process, the motor needs to be coded. The traditional coding process is to place the motor on the assembly line and then spray the code. However, sometimes the placement direction is wrong, such as the motor is placed at 90° or the motor is placed at 180°. However, coding can still be performed even when the placement direction is wrong, resulting in reverse coding and poor coding, which in turn leads to a low yield rate of the final motor products. Summary of the invention

[0003] The purpose of the present invention is to provide a motor inkjet coding device, the error prevention mechanism of which can detect the situation where the motor is placed in the wrong direction, thereby improving the yield rate of the motor product.

[0004] To achieve this object, the present invention adopts the following technical solutions:

[0005] A motor coding device comprises a frame, a coding mechanism, a carrying jig and an error prevention mechanism, wherein the frame is provided with a conveyor belt for conveying the carrying jig, the top of the carrying jig is provided with a placement groove for placing the motor, and the coding mechanism is arranged on the frame for coding the motor;

[0006] The error prevention mechanism includes a baffle assembly, which includes a first baffle, a second baffle and a height-limiting baffle. The height-limiting baffle is arranged on the frame and one end of the height-limiting baffle is bent and extends above the conveyor belt. The height-limiting baffle and the inkjet coding mechanism are arranged in sequence along the conveying direction of the conveyor belt. The first baffle and the second baffle are respectively arranged at two opposite ends of the placement groove; the height of the height-limiting baffle is greater than the height of the first baffle and less than the sum of the outer shell radius of the motor and the height of the first baffle, the height of the first baffle is greater than the height of the second baffle, a first notch for placing the rotating shaft of the motor is provided on the first baffle, and a second notch for placing the bearing chamber of the motor is provided on the second baffle, the openings of the first notch and the second notch are both facing upward and the depth of the first notch is greater than the depth of the second notch.

[0007] In some embodiments, the anti-error mechanism also includes an anti-reverse component, which includes an anti-reverse baffle and a jig reverse block, the anti-reverse baffle is arranged on the supporting jig and close to the second baffle, and the anti-reverse baffle protrudes from the side of the supporting jig; the jig reverse block is arranged on the frame and located on one side of the conveyor belt along the conveying direction, and the jig reverse block can block the anti-reverse baffle when the supporting jig is reversed.

[0008] In some embodiments, the supporting fixture includes a supporting base plate and at least one supporting seat mounted on the supporting base plate, and each supporting seat is provided with the mounting groove.

[0009] In some embodiments, the anti-error mechanism also includes an anti-reverse component, which includes an anti-reverse baffle and a jig reverse block, the anti-reverse baffle is arranged on the supporting base plate and protrudes from the side of the supporting base plate; the jig reverse block is arranged on the frame and is located on one side of the conveyor belt along the conveying direction, and the jig reverse block can block the anti-reverse baffle when the supporting jig is reversed.

[0010] In some embodiments, the bearing seat is detachably mounted on the bearing base plate.

[0011] In some embodiments, a plurality of the bearing seats are mounted on the bearing base plate, and the plurality of the bearing seats are arranged at intervals on the bearing base plate.

[0012] In some embodiments, the height limiting baffle is mounted on the frame in an adjustable manner in the vertical direction.

[0013] In some embodiments, the height limiting baffle is an L-shaped plate, which includes a supporting portion and a height limiting portion vertically connected to the supporting portion, the supporting portion is installed on the frame, and the height limiting portion is parallel to the conveyor belt and located above the conveyor belt.

[0014] In some embodiments, the error prevention mechanism also includes a magnetic pole sensor for detecting the motor pole, the magnetic pole sensor is communicatively connected to the conveyor belt, the magnetic pole sensor is arranged on the frame and located on one side of the conveyor belt along the conveying direction, and the height limit baffle, the magnetic pole sensor and the inkjet coding mechanism are arranged in sequence along the conveying direction.

[0015] In some embodiments, the coding mechanism is a laser coding mechanism, which includes a bracket and a coding laser head. The bracket is installed on the frame and is located on one side of the conveyor belt along the conveying direction. The coding laser head is installed on the bracket and is located vertically above the conveyor belt, and the laser direction of the coding laser head is perpendicular to the conveyor belt.

[0016] The motor coding device of the present invention has at least the following beneficial effects: by setting the height of the height limiting baffle to be greater than the height of the first baffle and less than the sum of the motor's outer shell radius and the height of the first baffle, the height of the first baffle is greater than the height of the second baffle. Therefore, when the motor is placed at 180° (that is, the motor shaft is placed in the second notch, and the motor bearing chamber is placed in the first notch), the highest point of the motor on the conveyor belt will be higher than the height limiting baffle, so that the motor will be blocked by the height limiting baffle when it is transported on the conveyor belt, preventing the motor from continuing to be transported forward, avoiding the occurrence of reverse coding and poor coding, and thus improving the yield rate of the motor product; by setting the depth of the first notch to be greater than the depth of the second notch, when the motor is placed at 90° (that is, the motor terminal is placed in the second notch), the highest point of the motor on the conveyor belt will be higher than the height limiting baffle, so that the motor will be blocked by the height limiting baffle when it is transported on the conveyor belt, preventing the motor from continuing to be transported forward, avoiding the occurrence of reverse coding and poor coding, and thus improving the yield rate of the motor product. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the structure of a motor inkjet printer provided in an embodiment of the present invention;

[0018] Figure 2 A schematic diagram of the structure of a motor provided in an embodiment of the present invention.

[0019] Description of Figure Numbers:

[0020] 10. Frame; 20. Conveyor belt; 30. Inkjet coding mechanism; 31. Bracket; 32. Inkjet coding laser head; 40. Carrying fixture; 41. Carrying base plate; 42. Carrying seat; 421. Mounting groove; 51. First baffle plate; 511. First notch; 52. Second baffle plate; 521. Second notch; 53. Height limiting baffle plate; 54. Anti-reflection baffle plate; 55. Fixture reverse block; 56. Magnetic pole sensor; 60. Motor; 61. Housing; 62. Rotating shaft; 63. End cover; 64. Bearing chamber; 65. Terminal. DETAILED DESCRIPTION

[0021] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. Preferred embodiments of the present invention are provided in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0022] This embodiment provides a motor inkjet device, which can be used to inkjet the motor 60. Specifically, Figure 2As shown, one end of the rotating shaft 62 of the motor 60 passes through one end of the outer shell 61 of the motor 60, and an end cover 63 is fixed to the other end of the outer shell 61. The end cover 63 is provided with a bearing chamber 64 protruding outward, and the other end of the rotating shaft 62 is placed in a bearing in the bearing chamber 64. The two terminals 65 (positive terminal and negative terminal) of the motor 60 pass through the end cover 63 and are respectively located on two opposite sides of the bearing chamber 64, and the two terminals 65 are located on the same straight line where the diameter of the outer shell 61 is located.

[0023] like Figure 1 As shown, the motor inkjet device includes a frame 10, an inkjet mechanism 30, a carrier jig 40 and an error prevention mechanism. The frame 10 is provided with a conveyor belt 20 for conveying the carrier jig 40, and the top of the carrier jig 40 is provided with a placement groove 421 for placing the motor 60; the inkjet mechanism 30 is arranged on the frame 10, and the inkjet mechanism 30 is used to inkjet the motor 60; the error prevention mechanism includes a baffle assembly, the baffle assembly includes a first baffle 51, a second baffle 52 and a height limiting baffle 53, the height limiting baffle 53 is arranged on the frame 10 and one end of the height limiting baffle 53 is bent and extended to the top of the conveyor belt 20, and the height limiting baffle 53 and the inkjet mechanism 30 are along the conveying direction of the conveyor belt 20 (the conveying direction of the conveyor belt 20 is Figure 1 The first baffle plate 51 and the second baffle plate 52 are arranged in sequence along the two opposite ends of the accommodating groove 421 respectively; the height of the height limiting baffle plate 53 is greater than the height of the first baffle plate 51 and less than the sum of the radius of the housing 61 of the motor 60 and the height of the first baffle plate 51, the height of the first baffle plate 51 is greater than the height of the second baffle plate 52, the first baffle plate 51 is provided with a first notch 511 for accommodating the rotating shaft 62 of the motor 60, the second baffle plate 52 is provided with a second notch 521 for accommodating the bearing chamber 64 of the motor 60, the openings of the first notch 511 and the second notch 521 are both facing upwards and the depth of the first notch 511 is greater than the depth of the second notch 521.

[0024] Among them, "the height of the height-limiting baffle 53" refers to the vertical distance between the lowest point of the side of the height-limiting baffle 53 located above the conveyor belt 20 and facing the conveyor belt 20 and the conveyor belt 20; "the height of the first baffle 51" refers to the vertical distance between the highest point of the first baffle 51 and the conveyor belt 20; "the height of the second baffle 52" refers to the vertical distance between the highest point of the second baffle 52 and the conveyor belt 20. Specifically, the correct placement of the motor 60 on the supporting fixture 40 is: the rotating shaft 62 of the motor 60 is placed in the first notch 511, and the bearing chamber 64 of the motor 60 is placed in the second notch 521, and the two terminals 65 of the motor 60 are respectively placed on the top of the second baffle 52 on both sides of the second notch 521.

[0025] The motor inkjet device is configured to have a height of the height-limiting baffle 53 that is greater than the height of the first baffle 51 and less than the sum of the radius of the housing 61 of the motor 60 and the height of the first baffle 51. The height of the first baffle 51 is greater than the height of the second baffle 52. Therefore, when the motor 60 is placed at 180° (i.e., the rotating shaft 62 of the motor 60 is placed in the second notch 521, and the bearing chamber 64 of the motor 60 is placed in the first notch 511), the highest point of the motor 60 on the conveyor belt 20 will be higher than the height-limiting baffle 53, so that the motor 60 will be blocked by the height-limiting baffle 53 when being transported on the conveyor belt 20, preventing the motor 60 from continuing to move. The motor 60 is continuously conveyed forward to avoid reverse deflection of the coding and poor coding, thereby improving the yield rate of the motor 60 product; by setting the depth of the first notch 511 to be greater than the depth of the second notch 521, when the motor 60 is placed at 90° (that is, the terminal 65 of the motor 60 is placed in the second notch 521), the highest point of the motor 60 on the conveyor belt 20 will be higher than the height limiting baffle 53, so that the motor 60 will be blocked by the height limiting baffle 53 when being conveyed on the conveyor belt 20, preventing the motor 60 from continuing to be conveyed forward, avoiding reverse deflection of the coding and poor coding, thereby improving the yield rate of the motor 60 product.

[0026] exist Figure 1 In the illustrated embodiment, the coding mechanism 30 is a laser coding mechanism, which includes a bracket 31 and a coding laser head 32. The bracket 31 is mounted on the frame 10 and is located on one side of the conveyor belt 20 along the conveying direction. The coding laser head 32 is mounted on the bracket 31 and is located vertically above the conveyor belt 20, and the laser direction of the coding laser head 32 is perpendicular to the conveyor belt 20. Of course, in other embodiments, the coding mechanism 30 may also be other types of coding mechanisms, as long as the coding function can be realized.

[0027] In a preferred embodiment, the height limiting baffle 53 is adjustable in position on the frame 10 in the vertical direction, so that the height of the height limiting baffle 53 can be adjusted according to the radius of the housing 61 of the motor 60 to be coded to adapt to motors 60 of different sizes, with good versatility.

[0028] In some embodiments, the height-limiting baffle 53 is an L-shaped plate, which includes a supporting portion and a height-limiting portion vertically connected to the supporting portion, the supporting portion is mounted on the frame 10, and the height-limiting portion is parallel to and above the conveyor belt 20. When the motor 60 is placed at 90° or 180°, the highest point of the motor 60 on the conveyor belt 20 will be higher than the height-limiting portion, so that the motor 60 will be blocked by the height-limiting portion when being transported on the conveyor belt 20, preventing the motor 60 from continuing to transport forward, thereby avoiding the occurrence of reverse deflection of the inkjet printer and poor inkjet printing.

[0029] In some embodiments, the error prevention mechanism further includes an anti-reverse component, and the anti-reverse component includes an anti-reverse baffle 54 and a jig reverse block 55. The anti-reverse baffle 54 is arranged on the supporting jig 40 and is arranged close to the second baffle 52, and the anti-reverse baffle 54 protrudes from the side of the supporting jig 40; the jig reverse block 55 is arranged on the frame 10 and is located on one side of the conveyor belt 20 along the conveying direction, and the jig reverse block 55 can block the anti-reverse baffle 54 when the supporting jig 40 is reversed. Specifically, the correct placement method of the supporting jig 40 on the conveyor belt 20 is: along the conveying direction of the conveyor belt 20, the first baffle 51 on the supporting jig 40 is in front, and the second baffle 52 is in the back. Figure 1 As shown, when the supporting jig 40 is reversed (i.e., the second baffle 52 on the supporting jig 40 is in front and the first baffle 51 is in the back), the anti-reverse baffle 54 and the jig reverse block 55 will be located on the same side of the conveyor belt 20 along the conveying direction, so that when the supporting jig 40 moves to the position of the jig reverse block 55, the jig reverse block 55 will block the anti-reverse baffle 54 to prevent the supporting jig 40 and the motor 60 on the supporting jig 40 from continuing to move forward, thereby avoiding the occurrence of reverse coding and poor coding.

[0030] In some embodiments, the bearing fixture 40 includes a bearing base plate 41 and at least one bearing seat 42 mounted on the bearing base plate 41, and each bearing seat 42 is provided with a placement groove 421, that is, one or more bearing seats 42 can be installed on the bearing base plate 41, and a motor 60 can be placed on each bearing seat 42. Preferably, a plurality of bearing seats 42 are installed on the bearing base plate 41, and the plurality of bearing seats 42 are arranged at intervals on the bearing base plate 41, so that a plurality of motors 60 can be transported at one time, which is conducive to improving the efficiency of inkjet printing work, and also makes the motor 60 more neat when being transported on the conveyor belt 20 to avoid clutter.

[0031] In the embodiment where the support fixture 40 includes a support base plate 41 and a support seat 42, the anti-reflection baffle 54 in the anti-reflection assembly is disposed on the support base plate 41 and protrudes from the side of the support base plate 41, so that only one anti-reflection baffle 54 is required for one support fixture 40, and no anti-reflection baffle 54 is required for each support seat 42, which is conducive to cost saving and a simpler structure. Figure 1 As shown, four bearing seats 42 are installed on a bearing base plate 41 , and the four bearing seats 42 are arranged at intervals along the first direction on the bearing base plate 41 . The anti-reflection baffle 54 is arranged on the bearing base plate 41 close to the second baffle 52 located at the end of the bearing base plate 41 .

[0032] In a preferred embodiment, the supporting fixture 40 is detachably mounted on the supporting base plate 41 , for example, the supporting fixture 40 can be mounted on the supporting base plate 41 by screw connection or snap connection, so that the supporting fixture 40 is easy to disassemble and assemble when it needs to be replaced.

[0033] In some embodiments, the error prevention mechanism further includes a magnetic pole sensor 56 for detecting the magnetic pole of the motor 60, the magnetic pole sensor 56 is in communication connection with the conveyor belt 20, the magnetic pole sensor 56 is arranged on the frame 10 and is located on one side of the conveyor belt 20 along the conveying direction, the height limiting baffle 53, the magnetic pole sensor 56 and the inkjet coding mechanism 30 are arranged in sequence along the conveying direction (that is, along the conveying direction of the conveyor belt 20, the height limiting baffle 53 is installed in front of the magnetic pole sensor 56, and the magnetic pole sensor 56 is installed in front of the inkjet coding mechanism 30). Preferably, the magnetic pole sensor 56 is arranged on the jig reverse stopper 55, so that the structure can be more compact and save installation space. The magnetic pole sensor 56 prevents errors by detecting the N / S pole of the motor 60. That is, the magnetic pole sensor 56 detects the direction of the motor 60. If the magnetic pole sensor 56 detects that the direction of the motor 60 is not the specified direction for inkjet printing, the conveyor belt 20 stops running. The staff places the motor 60 in the correct direction and then restarts the conveyor belt 20. When the magnetic pole sensor 56 detects that the direction of the motor 60 is correct, the motor 60 enters the next station, that is, the inkjet mechanism 30 station, and the inkjet printing work can be completed.

[0034] Figure 1 The working principle of the motor inkjet device shown is as follows:

[0035] The staff puts the motor 60 on the carrier jig 40, and then puts the carrier jig 40 on the conveyor belt 20, and the conveyor belt 20 transports the carrier jig 40 to the inkjet printing mechanism 30 station; when the carrier jig 40 passes through the height limit baffle 53, if the carrier jig 40 is blocked by the height limit baffle 53, it means that the motor 60 is placed at 90° or 180° on the carrier jig 40 and is not in place. At this time, the staff takes the carrier jig 40 off the conveyor belt 20, puts the motor 60 in place, and then puts it back on the conveyor belt 20, so that the carrier jig 40 continues to be transported to the inkjet printing mechanism 30 station; when the carrier jig 40 passes through the jig reverse block 55, if the anti-reverse baffle 54 on the carrier jig 40 is blocked by the jig reverse block 55, it means that the carrier jig 40 is reversed, and the staff The operator puts the carrier jig 40 back on the conveyor belt 20 after straightening it, so that the carrier jig 40 continues to be transported to the station of the coding mechanism 30; when the carrier jig 40 passes the magnetic pole sensor 56, if the magnetic pole sensor 56 detects that the direction of the motor 60 is not the specified direction of coding, the conveyor belt 20 will stop running, and the operator will place the motor 60 in the correct direction and restart the conveyor belt 20. When the magnetic pole sensor 56 detects that the direction of the motor 60 is correct, the conveyor belt 20 transports the carrier jig 40 and the motor 60 on the carrier jig 40 to the station of the coding mechanism 30, and the coding mechanism 30 will code the motor 60; after the coding is completed, the operator removes the motor 60 that has completed coding, and the empty carrier jig 40 is returned to the initial operation station via the conveyor belt 20.

[0036] It should be noted that when a part is referred to as being "fixed to" another part, it may be directly on the other part or there may be a central part. When a part is considered to be "connected" to another part, it may be directly connected to the other part or there may be a central part at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are for illustrative purposes only and do not represent the only implementation method.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0038] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0039] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A motor inkjet device, characterized in that: The invention comprises a frame (10), a coding mechanism (30), a carrying jig (40) and an error prevention mechanism, wherein the frame (10) is provided with a conveyor belt (20) for conveying the carrying jig (40), the top of the carrying jig (40) is provided with a placement groove (421) for placing a motor (60), and the coding mechanism (30) is arranged on the frame (10) and is used for coding the motor (60); The error prevention mechanism comprises a baffle assembly, the baffle assembly comprises a first baffle (51), a second baffle (52) and a height-limiting baffle (53), the height-limiting baffle (53) is arranged on the frame (10), and one end of the height-limiting baffle (53) is bent and extends above the conveyor belt (20), the height-limiting baffle (53) and the coding mechanism (30) are arranged in sequence along the conveying direction of the conveyor belt (20), the first baffle (51) and the second baffle (52) are respectively arranged at two opposite ends of the placement groove (421); the height of the height-limiting baffle (53) is greater than the height of the first baffle (51); The first baffle (51) has a height smaller than the sum of the radius of the housing (61) of the motor (60) and the height of the first baffle (51), the height of the first baffle (51) is greater than the height of the second baffle (52), the first baffle (51) is provided with a first notch (511) for accommodating a rotating shaft (62) of the motor (60), the second baffle (52) is provided with a second notch (521) for accommodating a bearing chamber (64) of the motor (60), the openings of the first notch (511) and the second notch (521) are both facing upwards and the depth of the first notch (511) is greater than the depth of the second notch (521); The bearing fixture (40) comprises a bearing base plate (41) and at least one bearing seat (42) mounted on the bearing base plate (41), and each of the bearing seats (42) is provided with the placement groove (421); The height limiting baffle (53) is mounted on the frame (10) in an adjustable manner in the vertical direction.

2. The motor inkjet device according to claim 1, characterized in that: The anti-error mechanism also includes an anti-reverse component, which includes an anti-reverse baffle (54) and a jig reverse block (55). The anti-reverse baffle (54) is arranged on the supporting jig (40) and is arranged close to the second baffle (52), and the anti-reverse baffle (54) protrudes from the side of the supporting jig (40); the jig reverse block (55) is arranged on the frame (10) and is located on one side of the conveyor belt (20) along the conveying direction, and the jig reverse block (55) can block the anti-reverse baffle (54) when the supporting jig (40) is reversed.

3. The motor inkjet device according to claim 1, characterized in that: The anti-error mechanism also includes an anti-reverse component, which includes an anti-reverse baffle (54) and a jig reverse block (55), wherein the anti-reverse baffle (54) is arranged on the bearing bottom plate (41) and protrudes from the side of the bearing bottom plate (41); the jig reverse block (55) is arranged on the frame (10) and is located on one side of the conveyor belt (20) along the conveying direction, and the jig reverse block (55) can block the anti-reverse baffle (54) when the bearing jig (40) is reversed.

4. The motor inkjet device according to claim 1, characterized in that: The bearing seat (42) is detachably mounted on the bearing base plate (41).

5. The motor inkjet printer according to any one of claims 1, 3 and 4, characterized in that: A plurality of the bearing seats (42) are mounted on the bearing base plate (41), and the plurality of the bearing seats (42) are arranged at intervals on the bearing base plate (41).

6. The motor inkjet device according to claim 1, characterized in that: The height limiting baffle (53) is an L-shaped plate, comprising a supporting portion and a height limiting portion vertically connected to the supporting portion, the supporting portion being mounted on the frame (10), and the height limiting portion being parallel to the conveyor belt (20) and located above the conveyor belt (20).

7. The motor inkjet printer according to any one of claims 1 to 4, characterized in that: The error prevention mechanism also includes a magnetic pole sensor (56) for detecting the magnetic pole of the motor (60); the magnetic pole sensor (56) is communicatively connected to the conveyor belt (20); the magnetic pole sensor (56) is arranged on the frame (10) and is located on one side of the conveyor belt (20) along the conveying direction; the height limiting baffle (53), the magnetic pole sensor (56) and the inkjet coding mechanism (30) are arranged in sequence along the conveying direction.

8. The motor inkjet printer according to any one of claims 1 to 4, characterized in that: The coding mechanism (30) is a laser coding mechanism, comprising a bracket (31) and a coding laser head (32); the bracket (31) is mounted on the frame (10) and is located on one side of the conveyor belt (20) along the conveying direction; the coding laser head (32) is mounted on the bracket (31) and is located vertically above the conveyor belt (20); and the laser direction of the coding laser head (32) is perpendicular to the conveyor belt (20).

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