Valve section crimping special machine equipment

Abstract

The invention belongs to the technical field of pressure production equipment, and particularly relates to special valve section crimping equipment which comprises a rack. The multi-station rotary table module is arranged on the rack; the centering correction module is arranged on the rack and located on one side of the multi-station rotary table module; the overturning discharging module is arranged on the rack and located on the other side of the multi-station rotating disc module; and the pressing machine module is arranged on the rack and located on one side between the centering correction module and the overturning discharging module, and the pressing machine module corresponds to the multi-station rotary table module. The valve section press-fitting production efficiency and the qualified rate of press-fitting finished products can be improved.

Description

Technical Field

[0001] This invention belongs to the field of pressure production equipment technology, and in particular relates to a special machine for valve section crimping. Background Technology

[0002] Presses are the main equipment for compression molding, and are classified into frame-type and column-type structures according to their frame structure. Based on the location of the main hydraulic cylinder, presses are classified into top-pressure and bottom-pressure types. Bottom-pressure presses with the cylinder at the bottom are used for pressing large plastic laminates, while top-pressure presses are commonly used for pressing general plastic parts. According to the type of working fluid, presses can also be classified into hydraulic presses driven by hydraulic oil and water presses driven by oil-water emulsions. The power source for water presses is generally a central storage station. One central storage station can drive dozens to over a hundred water presses simultaneously, which is advantageous when the factory has a large production scale. In addition, laboratories also have various types of manual presses such as screw presses and jack presses.

[0003] Currently, when using a press to manufacture valve sections, the loading and unloading process is done manually, resulting in poor continuity and low production efficiency. Furthermore, when assembling the various components of the valve section, the coaxiality of the assembly cannot be guaranteed, leading to a low final product qualification rate.

[0004] Therefore, a special machine for valve section crimping needs to be designed to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a special machine for valve section crimping to solve the above problems and improve the production efficiency and the qualification rate of the crimped product.

[0006] To achieve the above objectives, the present invention provides the following solution: a valve section crimping machine, comprising a frame;

[0007] A multi-station turntable module, wherein the multi-station turntable module is mounted on the frame;

[0008] A centering and correction module is mounted on the frame and located on one side of the multi-station turntable module.

[0009] A tilting and unloading module is mounted on the frame and located on the other side of the multi-station turntable module;

[0010] A press module is mounted on the frame and located on one side between the centering and correction module and the flipping and unloading module. The press module corresponds to the multi-station turntable module.

[0011] Preferably, the multi-station turntable module includes a fixed base, which is fixedly embedded inside the frame. A turntable is rotatably connected to the top of the fixed base, and the turntable is higher than the top of the frame. A first servo motor is fixedly connected to the fixed base, and a divider is drivenly connected to the output shaft of the first servo motor. The divider is drivenly connected to the turntable. A plurality of support seats are fixedly connected to the top of the frame. The plurality of support seats are arranged around the circumference of the turntable and roll in contact with the bottom of the turntable. A plurality of proximity switches and a plurality of valve segment clamping mechanisms are arranged at the top of the turntable. The valve segment clamping mechanisms are arranged around the circumference of the top of the turntable and correspond one-to-one with the proximity switches.

[0012] Preferably, the valve segment clamping mechanism includes a tooling fixture for clamping the valve segment. The bottom end of the tooling fixture is fixedly connected to several guide shafts, and springs are sleeved on the outer side of the guide shafts. A protective component is provided at the top end of the tooling fixture, and a sensing sheet metal is fixedly connected to one side of the tooling fixture. The sensing sheet metal corresponds to the proximity switch.

[0013] Preferably, the centering and correction module includes a first module, which is slidably disposed on the top of the frame. A second module is disposed on the first module, and the movement direction of the second module is perpendicular to that of the first module. A first cylinder and a second cylinder are disposed on the first module, with the first cylinder located in the movement direction of the first module and the second cylinder located in the movement direction of the second module. A second servo motor is also disposed on the first module, and one end of the second servo motor is drivenly connected to a cable chain, the other end of which is fixedly connected to the top of the frame.

[0014] Preferably, the flipping unloading module includes a first mounting base, which is fixedly connected to the top of the frame. One end of the first mounting base is rotatably connected to a flipping cylinder, and the other end of the flipping cylinder is rotatably connected to a flipping clamp. A third mounting base is fixedly connected to the top of the frame, and a rotating shaft is rotatably connected to the top of the third mounting base through several bearing seats. The rotating shaft is fixedly connected to the flipping clamp.

[0015] Preferably, a first buffer assembly is provided on the side of the third mounting base away from the first mounting base. The first buffer assembly is fixedly connected to the top of the frame. Two second mounting bases are provided between the third mounting base and the first mounting base. The second mounting bases are fixedly connected to the top of the frame and located on both sides of the tilting cylinder. A second buffer assembly is fixedly connected to the top of each second mounting base.

[0016] Preferably, the press module includes a bracket, which is fixedly connected to the top of the frame. A servo cylinder is provided at the top of the bracket and is fixedly connected to the press. An adapter block is fixedly connected to the piston end of the servo cylinder, and a pressure head is fixedly connected to the bottom end of the adapter block. A buffer pad is fixedly connected to the bottom end of the pressure head.

[0017] Preferably, the bracket has a first adjusting plate at its top, a second adjusting plate at its top, the servo cylinder is fixedly connected to the second adjusting plate, and a bolt mounting block is fixedly connected to the top of the first adjusting plate, with an adjusting bolt threaded onto the bolt mounting block.

[0018] Preferably, an operation button and a safety light curtain are provided on one side of the bracket, and a three-color light is provided on the top of the bracket.

[0019] Preferably, a barcode scanning module is also fixedly connected to the top of the frame. The barcode scanning module includes a support, which is fixedly connected to the top of the frame. The bottom end of a vertically arranged guide rod is fixedly connected to the top of the support. Another guide rod is fixedly connected to the top of the guide rod through a fixing clip. The two guide rods are perpendicular to each other. A barcode scanner is fixedly connected to the end of the other guide rod away from the fixing clip through a mounting block.

[0020] Compared with the prior art, the present invention has the following advantages and technical effects:

[0021] This invention improves the continuity of feeding, alignment, pressing, and unloading during valve section pressing by using a multi-station turntable module, thereby increasing valve section production efficiency. The centering and correction module can perform centering and correction processing on the valve section assembly semi-finished products placed on the multi-station turntable module to ensure the coaxiality of the valve section assembly. The press module can press the corrected valve section to obtain the finished valve section. The flipping and unloading module can automatically unload the finished valve section. The equipment of this invention has a high degree of automation and can ensure the qualification rate of the pressed valve section finished products. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly described below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 This is a top view of the present invention;

[0025] Figure 3 This is a schematic diagram of the multi-station turntable module structure of the present invention;

[0026] Figure 4 This is a schematic diagram of the valve section clamping mechanism of the present invention;

[0027] Figure 5 This is a schematic diagram of the centering correction module structure of the present invention;

[0028] Figure 6 This is a schematic diagram of the flip-feed module structure of the present invention;

[0029] Figure 7 This is a schematic diagram of the valve section being flipped and unloaded by the flipping unloading module of the present invention. Figure 1 ;

[0030] Figure 8 This is a schematic diagram of the valve section being flipped and unloaded by the flipping unloading module of the present invention. Figure 2 ;

[0031] Figure 9 This is a schematic diagram of the press module structure of the present invention;

[0032] Figure 10 This is a schematic diagram of the servo electric cylinder and pressure head structure of the present invention;

[0033] Figure 11 This is a schematic diagram of the barcode scanning module structure of the present invention;

[0034] Figure 12 This is an exploded view of the valve section;

[0035] Figure 13 This is a schematic diagram of the valve section.

[0036] The components include: 1. Frame; 2. Multi-station turntable module; 3. Centering and correction module; 4. Press module; 5. Tilting and unloading module; 6. Barcode scanning module; 7. Fixed base; 8. First servo motor; 9. Divider; 10. Turntable; 11. Support base; 12. Origin sensor; 13. Proximity switch; 14. Diffuse reflection sensor; 15. Valve section; 16. Tooling fixture; 17. Guide shaft; 18. Spring; 19. Inductive sheet metal; 20. Protective components; 21. First module; 22. Second servo motor; 23. Cable chain; 24. Second module; 25. First cylinder; 26. Second cylinder; 27. First mounting base; 28. Second mounting base; 29. ​​Tilting cylinder; 30. Tilting fixture; 31. ... 31. Mounting base; 32. Bearing housing; 33. Rotating shaft; 34. First buffer assembly; 35. Second buffer assembly; 36. Proximity sensor; 37. Bracket; 38. Tri-color light; 39. Third servo motor; 40. Servo cylinder; 41. Pressure head; 42. Operation button; 43. Safety light curtain; 44. First adjusting plate; 45. Second adjusting plate; 46. Bolt mounting block; 47. Adjusting bolt; 48. Pressure sensor; 49. Adapter block; 50. Buffer pad; 51. Support; 52. Guide rod; 53. Fixing clamp; 54. Mounting block; 55. Barcode scanner; 56. Lower end plate; 57. Heat sink; 58. IGBT; 59. Thyristor; 60. Upper end plate; 61. Upright pole; 62. Nut. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0039] Reference Figures 1 to 13 As shown, the present invention provides a valve section crimping machine, including...

[0040] Rack 1;

[0041] Multi-station turntable module 2 is mounted on frame 1;

[0042] Centering and correction module 3 is mounted on frame 1 and located on one side of multi-station turntable module 2;

[0043] The flip-feed module 5 is mounted on the frame 1 and located on the other side of the multi-station turntable module 2.

[0044] Press module 4 is mounted on frame 1 and located on one side between centering and correction module 3 and flipping unloading module 5. Press module 4 corresponds to multi-station turntable module 2.

[0045] In this invention, the multi-station turntable module 2 is equipped with four stations, which are evenly distributed on the multi-station turntable module 2. These four stations are respectively a loading station, a centering station, a pressing station, and a unloading station. After loading is completed at the loading station, the station rotates to the centering station for centering to ensure the concentricity of the components of the valve section 15. The centering station is composed of a first module 21, a second module 24, a first cylinder 25, and a second cylinder 26 in the XY direction. It corrects the components of the valve section 15 from four horizontal directions. After correction, the station rotates to the pressing station, and the press mold... Block 4 includes a servo control system and a pressure control system. During the pressing process, the pressure sensor 48 records the insertion pressure in real time and transmits the pressure data to the system for storage and judgment. When the insertion pressure is not within the set value range, the equipment automatically stops and the product is judged to be unqualified. The press head 41 can be disassembled and quickly replaced according to different products being produced, which is convenient, fast and highly compatible. After pressing is completed, it reaches the unloading station to wait for the robot arm to grab it for unloading. The robot arm grabs the top of the valve section 15 and moves it to the flip unloading module 5. The single cycle operation of the pressing equipment is completed.

[0046] Further optimizing the scheme, the multi-station turntable module 2 includes a fixed base 7, which is fixedly embedded inside the frame 1. A turntable 10 is rotatably connected to the top of the fixed base 7. The turntable 10 is higher than the top of the frame 1. A first servo motor 8 is fixedly connected to the fixed base 7. The output shaft of the first servo motor 8 is driven to connect to a divider 9. The divider 9 is driven to connect to the turntable 10. Several support seats 11 are fixedly connected to the top of the frame 1. The several support seats 11 are arranged around the circumference of the turntable 10 and roll in contact with the bottom of the turntable 10. Several proximity switches 13 and several valve segment clamping mechanisms are arranged at the top of the turntable 10. The valve segment clamping mechanisms are arranged around the top circumference of the turntable 10 and correspond one-to-one with the proximity switches 13.

[0047] Furthermore, an origin sensor 12 is provided on the divider 9, and a diffuse reflection sensor 14 is provided on the top of the turntable 10.

[0048] The valve section clamping mechanism is further optimized by including a tooling fixture 16, which is used to clamp the valve section 15. Several guide shafts 17 are fixedly connected to the bottom of the tooling fixture 16, and springs 18 are sleeved on the outside of the guide shafts 17. A protective component 20 is provided at the top of the tooling fixture 16, and an induction sheet metal 19 is fixedly connected to one side of the tooling fixture 16. The induction sheet metal 19 corresponds to the proximity switch 13.

[0049] The divider 9 is a cam divider, a core component of the multi-station turntable module 2. A cam divider is a transmission mechanism with intermittent motion. Depending on the selected drive angle, after the cam roller division transmission is completed, it remains stationary. In this state, no rotational motion occurs; this is conventionally referred to as the stationary region. Within this stationary region, the first servo motor 8 continues to operate. Four tooling fixtures 16 are fixedly mounted on the turntable 10, moving with the divider 9 to each station. Proximity switches 13 are fixed in the center of the turntable 10 in the four station directions. Each tooling fixture 16 on the turntable 10 is equipped with a sensing sheet metal 19. When the press is working, under the pressure of the press, the tooling fixtures 16 move downwards, and the sensing sheet metal 19 moves out of the detection range of the proximity switches 13. In this state, the divider 9 does not operate. When all four proximity switches 13 detect a signal, the divider 9 operates, the turntable 10 rotates, and the next action is performed.

[0050] Further optimization of the scheme: the centering and correction module 3 includes a first module 21, which is slidably mounted on the top of the frame 1. A second module 24 is mounted on the first module 21, and the movement directions of the second module 24 and the first module 21 are perpendicular to each other. A first cylinder 25 and a second cylinder 26 are mounted on the first module 21. The first cylinder 25 is located in the movement direction of the first module 21, and the second cylinder 26 is located in the movement direction of the second module 24. A second servo motor 22 is also mounted on the first module 21. One end of the second servo motor 22 is connected to a drag chain 23, and the other end of the drag chain 23 is fixedly connected to the top of the frame 1.

[0051] After the material is loaded at the loading station of turntable 10, turntable 10 rotates to the centering station. At the centering station, the first module 21 and the second module 24 first position each component of valve section 15 in the XY direction. Then, the first cylinder 25 and the second cylinder 26 on the other side are activated. Under the action of cylinder thrust, the correction action is completed.

[0052] Further optimizing the scheme, the flipping unloading module 5 includes a first mounting base 27, which is fixedly connected to the top of the frame 1. One end of the first mounting base 27 is rotatably connected to the flipping cylinder 29, and the other end of the flipping cylinder 29 is rotatably connected to the flipping fixture 30. A third mounting base 31 is fixedly connected to the top of the frame 1. The top of the third mounting base 31 is rotatably connected to a rotating shaft 33 through several bearing seats 32. The rotating shaft 33 is fixedly connected to the flipping fixture 30.

[0053] In a further optimized design, a first buffer assembly 34 is provided on the side of the third mounting base 31 away from the first mounting base 27. The first buffer assembly 34 is fixedly connected to the top of the frame 1. Two second mounting bases 28 are provided between the third mounting base 31 and the first mounting base 27. The second mounting bases 28 are fixedly connected to the top of the frame 1 and located on both sides of the tilting cylinder 29. A second buffer assembly 35 is fixedly connected to the top of each second mounting base 28.

[0054] Furthermore, a proximity sensor 36 is provided on one side of the third mounting base 31. The proximity sensor 36 is used to detect whether the flipping fixture 30 has been flipped into place.

[0055] The flipping fixture 30 is mainly responsible for flipping the pressed valve section 15 by 45 degrees, so that the robot arm can grasp it at different angles in the next process.

[0056] The design is further optimized. The press module 4 includes a bracket 37, which is fixedly connected to the top of the frame 1. A servo cylinder 40 is installed at the top of the bracket 37. The servo cylinder 40 is fixedly connected to the press. An adapter block 49 is fixedly connected to the piston end of the servo cylinder 40. A pressure head 41 is fixedly connected to the bottom end of the adapter block 49. A buffer pad 50 is fixedly connected to the bottom end of the pressure head 41.

[0057] Furthermore, a third servo motor 39 is provided on the servo electric cylinder 40, and a pressure sensor 48 is provided between the piston end of the servo electric cylinder 40 and the adapter block 49.

[0058] The scheme is further optimized. A first adjusting plate 44 is set at the top of the bracket 37, and a second adjusting plate 45 is set at the top of the first adjusting plate 44. The servo electric cylinder 40 is fixedly connected to the second adjusting plate 45. A bolt mounting block 46 is fixedly connected to the top of the first adjusting plate 44, and an adjusting bolt 47 is threadedly connected to the bolt mounting block 46.

[0059] The design has been further optimized. An operation button 42 and a safety light curtain 43 are provided on one side of the bracket 37, and a three-color light 38 is provided on the top of the bracket 37.

[0060] During the press-fitting process, the pressure sensor 48 records the insertion pressure in real time and transmits the pressure data to the system for storage and judgment. When the pressure is determined to be outside the set value range, the equipment automatically stops and is judged as unqualified.

[0061] In a further optimized design, a barcode scanning module 6 is fixedly connected to the top of the frame 1. The barcode scanning module 6 includes a support 51, which is fixedly connected to the top of the frame 1. The bottom of a vertically arranged guide rod 52 is fixedly connected to the top of the support 51. Another guide rod 52 is fixedly connected to the top of the guide rod 52 through a fixing clip 53. The two guide rods 52 are perpendicular to each other. The end of the other guide rod 52 away from the fixing clip 53 is fixedly connected to a barcode scanner 55 through a mounting block 54.

[0062] The barcode scanner 55 is responsible for scanning and identifying the product codes of valve section 15 and inputting the data into the system.

[0063] Valve section 15 includes a lower end plate 56. The top of the lower end plate 56 is provided with three heat sinks 57 and two IGBTs 58. The three heat sinks 57 and two IGBTs 58 are arranged alternately. The top of the uppermost IGBT 58 is provided with a thyristor 59. The top of the thyristor 59 is provided with a fourth heat sink 57. The top of the fourth heat sink 57 is provided with an upper end plate 60. The lower end plate 56 and the upper end plate 60 are connected by four uprights 61. Each upright 61 is threaded with a nut 62 at its top.

[0064] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0065] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made to the technical solutions of the present invention by those skilled in the art without departing from the spirit of the present invention should fall within the protection scope of the present invention.

Claims

1. A valve section crimping machine, characterized in that: include Rack (1); A multi-station turntable module (2), wherein the multi-station turntable module (2) is arranged on the frame (1); A centering correction module (3), the centering correction module (3) being arranged on the frame (1) and located on one side of the multi-station turntable module (2); A turning and unloading module (5), wherein the turning and unloading module (5) is arranged on the frame (1) and is located on the other side of the multi-station turntable module (2); A press module (4), wherein the press module (4) is arranged on the frame (1) and is located on one side between the centering correction module (3) and the flipping and unloading module (5), and the press module (4) corresponds to the multi-station turntable module (2).

2. A valve section crimping machine according to claim 1, characterized in that: The multi-station turntable module (2) comprises a fixed seat (7), the fixed seat (7) is fixedly embedded in the frame (1), the top of the fixed seat (7) is rotatably connected to a turntable (10), the turntable (10) is higher than the top of the frame (1), the fixed seat (7) is fixedly connected to a first servo motor (8), the output shaft of the first servo motor (8) is drivingly connected to a divider (9), the divider (9) is drivingly connected to the turntable (10), the top of the frame (1) is fixedly connected to a plurality of support seats (11), the plurality of support seats (11) are arranged along the circumference of the turntable (10) and are in rolling contact with the bottom of the turntable (10), the top of the turntable (10) is provided with a plurality of proximity switches (13) and a plurality of valve section clamping mechanisms, the valve section clamping mechanisms are arranged along the circumference of the top of the turntable (10) and correspond one to one with the proximity switches (13).

3. A valve section crimping machine according to claim 2, characterized in that: The valve section clamping mechanism comprises a fixture (16), wherein the fixture (16) is used to clamp the valve section (15), a plurality of guide shafts (17) are fixedly connected to the bottom end of the fixture (16), a spring (18) is sleeved on the outside of the guide shaft (17), a protective component (20) is arranged on the top end of the fixture (16), and a sensing sheet metal (19) is fixedly connected to one side of the fixture (16), wherein the sensing sheet metal (19) corresponds to the proximity switch (13).

4. The valve section crimping machine according to claim 1 is characterized in that: The centering correction module (3) comprises a first module (21), the first module (21) being slidably arranged at the top of the frame (1), a second module (24) being arranged on the first module (21), the movement directions of the second module (24) and the first module (21) being perpendicular to each other, a first cylinder (25) and a second cylinder (26) being arranged on the first module (21), the first cylinder (25) being located in the movement direction of the first module (21), the second cylinder (26) being located in the movement direction of the second module (24), and a second servo motor (22) being further arranged on the first module (21), the second servo motor (22) being transmission-connected to one end of a drag chain (23), the other end of the drag chain (23) being fixedly connected to the top of the frame (1).

5. The valve section crimping machine according to claim 1 is characterized in that: The flipping and unloading module (5) comprises a first mounting seat (27), the first mounting seat (27) is fixedly connected to the top of the frame (1), the first mounting seat (27) is rotatably connected to one end of a flip cylinder (29), the other end of the flip cylinder (29) is rotatably connected to a flip fixture (30), the top of the frame (1) is fixedly connected to a third mounting seat (31), the top of the third mounting seat (31) is rotatably connected to a rotating shaft (33) via a plurality of bearing seats (32), and the rotating shaft (33) is fixedly connected to the flip fixture (30).

6. A valve section crimping machine according to claim 5, characterized in that: A first buffer assembly (34) is arranged on a side of the third mounting seat (31) away from the first mounting seat (27), the first buffer assembly (34) being fixedly connected to the top of the frame (1), two second mounting seats (28) being arranged between the third mounting seat (31) and the first mounting seat (27), the second mounting seats (28) being fixedly connected to the top of the frame (1) and being located on both sides of the flip cylinder (29), and a second buffer assembly (35) being fixedly connected to the top of each second mounting seat (28).

7. The valve section crimping machine according to claim 1, characterized in that: The press module (4) comprises a bracket (37), the bracket (37) is fixedly connected to the top of the frame (1), a servo electric cylinder (40) is arranged at the top of the bracket (37), the servo electric cylinder (40) is fixedly connected to the press, a transfer block (49) is fixedly connected to the piston end of the servo electric cylinder (40), a pressure head (41) is fixedly connected to the bottom end of the transfer block (49), and a buffer pad (50) is fixedly connected to the bottom end of the pressure head (41).

8. The valve section crimping machine according to claim 7, characterized in that: A first adjustment plate (44) is arranged at the top of the bracket (37), a second adjustment plate (45) is arranged at the top of the first adjustment plate (44), the servo electric cylinder (40) is fixedly connected to the second adjustment plate (45), a bolt mounting block (46) is fixedly connected to the top of the first adjustment plate (44), and an adjustment bolt (47) is threadedly connected to the bolt mounting block (46).

9. The valve section crimping machine according to claim 7, characterized in that: An operating button (42) and a safety grating (43) are arranged on one side of the bracket (37), and a three-color lamp (38) is arranged on the top of the bracket (37).

10. The valve section crimping machine according to claim 1, characterized in that: The top of the frame (1) is also fixedly connected to a code scanning module (6), and the code scanning module (6) comprises a support (51), the support (51) is fixedly connected to the top of the frame (1), the top of the support (51) is fixedly connected to the bottom end of a vertically arranged guide rod (52), the top of the guide rod (52) is fixedly connected to another guide rod (52) through a fixing clamp (53), the two guide rods (52) are perpendicular to each other, and the end of the other guide rod (52) away from the fixing clamp (53) is fixedly connected to a code scanning gun (55) through a mounting block (54).

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