Double-track double-valve dispensing equipment

Abstract

The utility model relates to the technical field of dispensing machines, in particular to double-track double-valve dispensing equipment which comprises a conveying assembly, a dispensing assembly and a lifting assembly, and the lifting assembly comprises a first lifting mechanism and a second lifting mechanism. The first lifting mechanism is used for lifting a to-be-dispensed part on the conveying assembly so that the first dispensing valve can dispense glue and allowing a subsequent to-be-dispensed part on the conveying assembly to pass through, and the second lifting mechanism is used for lifting the to-be-dispensed part on the conveying assembly so that the second dispensing valve can dispense glue. The upper pressing plate is matched with the jacking plate to preliminarily clamp a to-be-dispensed part, and the lower pressing plate is matched with the upper pressing plate to clamp the to-be-dispensed part; according to the utility model, the first lifting mechanism is used for lifting the to-be-dispensed part for the first dispensing valve to dispense, and the subsequent to-be-dispensed part on the conveying assembly is allowed to pass through the position of the second dispensing valve to dispense, so that the first dispensing valve and the second dispensing valve can dispense glue synchronously, the waiting time is saved, and the dispensing efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of dispensing machine technology, and in particular to a dual-track dual-valve dispensing device. Background Technology

[0002] Chinese Patent Application No. 202121905354.2 discloses a dual-dispensing valve asynchronous device and dispensing equipment, which includes a mounting bracket, a first lifting mechanism, a second lifting mechanism, a first dispensing device, and a second dispensing device. The first dispensing device and the second dispensing device can move up and down with the first lifting mechanism and the second lifting mechanism, respectively. However, the second dispensing device in this application needs to wait for the first dispensing device to complete dispensing and transport it to its corresponding position before it can work, which wastes waiting time and results in low dispensing efficiency. Utility Model Content

[0003] The technical problem to be solved by this utility model is: in order to solve the problem that the second dispensing device in the prior art needs to wait for the first dispensing device to complete dispensing and transport it to its corresponding position before it can work, which wastes waiting time and results in low dispensing efficiency, a dual-track dual-valve dispensing device is provided.

[0004] To solve the above-mentioned technical problems, this utility model adopts the following technical solution: a dual-track dual-valve dispensing device, comprising:

[0005] Conveying assembly for conveying parts to be glued;

[0006] A dispensing assembly, including a first dispensing valve and a second dispensing valve;

[0007] The lifting assembly includes a first lifting mechanism and a second lifting mechanism. The first lifting mechanism is used to lift the parts to be dispensed on the conveying assembly for dispensing by the first dispensing valve and to allow subsequent parts to be dispensed on the conveying assembly to pass through. The second lifting mechanism is used to lift the parts to be dispensed on the conveying assembly for dispensing by the second dispensing valve. Both the first and second lifting mechanisms include a lifting plate that is raised and lowered, an upper pressure plate that cooperates with the lifting plate to initially clamp the parts to be dispensed, and a lower pressure plate that cooperates with the upper pressure plate to clamp the parts to be dispensed so as to allow the lifting plate to move down and reset.

[0008] Furthermore, the conveying assembly includes a base, a first motor mounted on the base, a drive wheel connected to the output end of the first motor, a driven wheel, a conveyor belt wound around the drive wheel and the driven wheel, and a support block supported below the conveyor belt.

[0009] Furthermore, the lower pressure plate is hinged to the base in the middle, and one end of it is a clamping part for cooperating with the upper pressure plate, and the other end is a pressure part connected to the pressure applying mechanism. The lower pressure plate can rotate around the hinge point under the action of the pressure applying mechanism so that the clamping part moves towards the upper pressure plate to clamp the glue part to be applied between it and the upper pressure plate.

[0010] Furthermore, the output end of the pressure applying mechanism is equipped with a pin, and the lower pressure plate has a groove through which the pin passes and slides.

[0011] Furthermore, the thickness of the clamping portion gradually decreases along the direction away from the pressure-applying portion.

[0012] Furthermore, the pin is mounted on the output end of the pressure applying mechanism via a connecting block, and the pressure applying part has a first clearance groove for accommodating the connecting block, and the clamping part has a second clearance groove in the middle, with a guide post in the second clearance groove.

[0013] Furthermore, the dispensing assembly also includes a slide and a first Y-axis drive mechanism for driving the slide to move along the Y-axis direction;

[0014] The slide is equipped with a first X-axis drive mechanism for driving the first dispensing valve to move along the X-axis direction, a first Z-axis drive mechanism for driving the first dispensing valve to move along the Z-axis direction, and a first vision detection mechanism.

[0015] Furthermore, the slide is equipped with a second X-axis drive mechanism for driving the second dispensing valve to move along the X-axis direction, a second Z-axis drive mechanism for driving the second dispensing valve to move along the Z-axis direction, a second Y-axis drive mechanism for driving the second dispensing valve to move along the Y-axis direction, and a second vision detection mechanism.

[0016] Furthermore, there are two conveying components, which are arranged side by side along the Y-axis to jointly support the adhesive to be dispensed, and a width adjustment mechanism for adjusting the distance between them is provided.

[0017] Furthermore, the width adjustment mechanism includes a second motor, a lead screw connected to the output end of the second motor and having two threaded segments with opposite directions of rotation, and two nut seats threadedly connected to the two threaded segments respectively, and the two nut seats are respectively connected to two conveying components.

[0018] Furthermore, the first lifting mechanism and the second lifting mechanism also include a lifting drive mechanism, a first fixing plate connected to the output end of the lifting drive mechanism, and a second fixing plate fixed on the first fixing plate. A clamping cavity for clamping the lifting plate is formed between the first fixing plate and the second fixing plate, and a first slider is installed on the first fixing plate, and a first slide rail that cooperates with the first slider is installed on the base.

[0019] The beneficial effects of this utility model are as follows: This utility model uses a first lifting mechanism to lift the part to be dispensed so that the first dispensing valve can dispense the glue, and allows subsequent parts to be dispensed on the conveying assembly to pass to the position of the second dispensing valve for dispensing, so that the first dispensing valve and the second dispensing valve can dispense glue synchronously, saving waiting time and improving dispensing efficiency. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Figure 1 This is a three-dimensional schematic diagram of the present invention from a first-person perspective;

[0022] Figure 2 This is the front view of this utility model;

[0023] Figure 3 This is a three-dimensional schematic diagram of the width adjustment mechanism;

[0024] Figure 4 This is a three-dimensional schematic diagram from a first-person perspective of the conveying and lifting components;

[0025] Figure 5 This is a three-dimensional schematic diagram of the conveying and lifting components from a second perspective;

[0026] Figure 6 This is a 3D schematic diagram of the lifting platform;

[0027] Figure 7 This is a schematic diagram showing the fit between the upper and lower pressure plates;

[0028] Figure 8 This is a structural schematic diagram of the lower pressure plate from a first-person perspective;

[0029] Figure 9 This is a structural schematic diagram of the lower pressure plate from a second perspective;

[0030] Figure 10 This is a 3D schematic diagram of the first dispensing valve;

[0031] Figure 11 This is a three-dimensional schematic diagram of the second dispensing valve;

[0032] In the picture:

[0033] 1. Conveying assembly; 101. Base; 102. First motor; 103. Drive wheel; 104. Driven wheel; 105. Conveyor belt; 106. Support block; 107. First slide rail; 108. Tensioner wheel;

[0034] 2. First dispensing valve;

[0035] 3. Second dispensing valve;

[0036] 4. First lifting mechanism; 401. Lifting plate; 402. Upper pressure plate; 403. Lower pressure plate; 4031. Clamping part; 4032. Pressing part; 4033. Slide groove; 4034. First clearance groove; 4035. Second clearance groove; 404. Pressing mechanism; 405. Pin; 406. Connecting block; 407. Guide column; 408. Lifting drive mechanism; 409. First fixing plate; 410. Second fixing plate; 411. First slider;

[0037] 5. Second lifting mechanism;

[0038] 6. Slide;

[0039] 7. First Y-axis drive mechanism;

[0040] 8. First Z-axis drive mechanism;

[0041] 9. First visual inspection agency;

[0042] 10. Second Z-axis drive mechanism;

[0043] 11. Second Y-axis drive mechanism;

[0044] 12. Second vision inspection agency;

[0045] 13. Width adjustment mechanism; 1301. Lead screw; 1302. Nut seat; 1303. Second slide rail; 1304. Second slider; Detailed Implementation

[0046] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention. Therefore, they only show the components, orientations, and references (e.g., up, down, left, right, etc.) relevant to the present invention and are intended only to aid in the description of the features in the drawings. Therefore, the following specific embodiments are not intended to be restrictive, and the scope of the claimed subject matter is defined solely by the appended claims and their equivalents.

[0047] like Figure 1 and Figure 2 As shown, a dual-track dual-valve dispensing device includes a frame, on which a conveying assembly 1, a dispensing assembly, and a lifting assembly are mounted.

[0048] The conveying assembly 1 is used to convey the part to be glued along the X-axis direction, and the part to be glued is located on the fixture;

[0049] The dispensing assembly includes a first dispensing valve 2 and a second dispensing valve 3 arranged along the X-axis direction;

[0050] The lifting assembly includes a first lifting mechanism 4 and a second lifting mechanism 5 arranged along the X-axis direction;

[0051] The first lifting mechanism 4 is used to lift the glue-to-be-applied part on the conveying assembly 1 for the first dispensing valve 2 to dispense glue. At this time, the glue-to-be-applied part is separated from the conveying assembly 1, which allows subsequent glue-to-be-applied parts on the conveying assembly 1 to pass through.

[0052] The second lifting mechanism 5 is used to lift the part to be dispensed on the conveying assembly 1 so that the second dispensing valve 3 can dispense the glue. At this time, the dispensing part is separated from the conveying assembly 1, and the conveying assembly 1 can continue to operate.

[0053] Both the first lifting mechanism 4 and the second lifting mechanism 5 include a lifting plate 401 that is raised and lowered, an upper pressure plate 402 that cooperates with the lifting plate 401 to initially clamp the part to be glued, and a lower pressure plate 403 that cooperates with the upper pressure plate 402 to clamp the part to be glued so that the lifting plate 401 can move down and reset. After the lifting plate 401 is reset, it will not affect the conveying path of the subsequent part to be glued. The conveying component 1 can drive the part to be glued to the position of the second glue dispensing valve 3 for glue dispensing.

[0054] First, the conveying assembly 1 conveys the first part to be dispensed to the position of the first dispensing valve 2. At this time, the lifting plate 401 in the first lifting mechanism 4 supports the part to be dispensed and moves it upward to the position of the upper pressure plate 402. After the two clamp the part to be dispensed, the lower pressure plate 403 and the upper pressure plate 402 cooperate to clamp and transfer the part to be dispensed from between the lifting plate 401 and the upper pressure plate 402 to between the lower pressure plate 403 and the upper pressure plate 402. At this time, the first dispensing valve 2 starts dispensing. At the same time, the lifting plate 401 moves down to reset. The conveying assembly 1 can carry the subsequent parts to be dispensed to the position of the second dispensing valve 3. The second lifting mechanism 5 repeats the above-mentioned action of the first lifting mechanism 4 to lift the second part to be dispensed so that the second dispensing valve 3 can dispense. This allows the first dispensing valve 2 and the second dispensing valve 3 to dispense at the same time, saving waiting time and improving dispensing efficiency.

[0055] In some examples, such as Figures 3-5 As shown, the conveying assembly 1 includes a base 101, a first motor 102 mounted on the base 101, a drive wheel 103 connected to the output end of the first motor 102, a driven wheel 104, a conveyor belt 105 wound around the drive wheel 103 and the driven wheel 104, and a support block 106 supported below the conveyor belt 105. The conveyor belt 105 extends along the X-axis direction for conveying the glued parts to be glued on it. The conveyor belt 105 is supported by the support block 106 located below it to improve its strength. On the other hand, the base 101 is equipped with a plurality of tensioning wheels 108 for tensioning the conveyor belt 105. The tensioning wheels 108 can improve the load-bearing capacity of the conveyor belt 105.

[0056] In some examples, such as Figures 7-9As shown, the lower pressure plate 403 is hinged to the base 101 at its middle part, and one end of it is a clamping part 4031 for cooperating with the upper pressure plate 402, and the other end is a pressure applying part 4032 connected to the pressure applying mechanism 404. The lower pressure plate 403 can rotate around the hinge point under the action of the pressure applying mechanism 404 so that the clamping part 4031 moves towards the upper pressure plate 402 to clamp the part to be glued between it and the upper pressure plate 402. The upper pressure plate 402 is located under the lower pressure plate. Above the plate 403, the pressure applying mechanism 404 can be, but is not limited to, a cylinder or a telescopic rod. When it drives the pressure applying part 4032 to move upward, the clamping part 4031 moves away from the upper pressure plate 402. When the pressure applying mechanism 404 drives the pressure applying part 4032 to move downward, the clamping part 4031 moves towards the upper pressure plate 402 to cooperate with the upper pressure plate 402. The movement trajectory of the lower pressure plate 403 does not interfere with the movement trajectory of the lifting plate 401.

[0057] In some examples, such as Figure 8 and Figure 9 As shown, a pin 405 is installed at the output end of the pressure applying mechanism 404. The lower pressure plate 403 has a groove 4033 for the pin 405 to pass through and slide. The groove 4033 is an oblong groove. The pin 405 and the groove 4033 cooperate to drive the pressure applying part 4032 to rotate without interfering with the movement of the pressure applying part 4032.

[0058] In some examples, such as Figure 8 and Figure 9 As shown, the thickness of the clamping part 4031 gradually decreases in the direction of gradually moving away from the pressure part 4032, so as to avoid interference between the clamping part 4031 and the upper pressure plate 402 during the process of the clamping part 4031 moving upward to the pressure plate 402, which would result in poor clamping effect.

[0059] In some examples, such as Figure 8 and Figure 9 As shown, the pin 405 is mounted on the output end of the pressure applying mechanism 404 via a connecting block 406, and a bolt is mounted on the connecting block 406. The bolt can abut against the pin 405 to limit the pin 405 within the connecting block 406. The pressure applying part 4032 has a first clearance groove 4034 for accommodating the connecting block 406. The first clearance groove 4034 divides the pressure applying part 4032 into two connecting arms. The two ends of the pin 405 are respectively inserted into the sliding grooves 4033 of the two connecting arms. The clamping part 4031 has a second clearance groove 4035 in the middle, and the second clearance groove 4035 is provided with a guide post 407.

[0060] Preferably, the lower pressure plate 403 is a split structure, which includes a first pressure block and a second pressure block fixedly connected. The pressure end and hinge point are located on the first pressure block, the clamping end is located on the second pressure block, and the first pressure block extends in the direction of the second pressure block to form a supporting section for supporting the second pressure block. The guide post 407 is bent in the direction of the second pressure block to form an abutting part for abutting against the second pressure block.

[0061] In some examples, such as Figure 1 , Figure 2 , Figure 9 and Figure 10 As shown, the dispensing assembly also includes a slide 6 and a first Y-axis drive mechanism 7 for driving the slide 6 to move along the Y-axis direction;

[0062] The slide block 6 is equipped with a first X-axis drive mechanism for driving the first dispensing valve 2 to move along the X-axis direction, a first Z-axis drive mechanism 8 for driving the first dispensing valve 2 to move along the Z-axis direction, and a first vision detection mechanism 9. The first dispensing valve 2 first takes a picture of the part to be dispensed and positions it through the first vision detection mechanism 9, and then moves to the position of the part to be dispensed under the action of the first X-axis drive mechanism, the first Y-axis drive mechanism 7 and the first Z-axis drive mechanism 8 to dispense glue.

[0063] Furthermore, the slide block 6 is equipped with a second X-axis drive mechanism for driving the second dispensing valve 3 to move along the X-axis direction, a second Z-axis drive mechanism 10 for driving the second dispensing valve 3 to move along the Z-axis direction, a second Y-axis drive mechanism 11 for driving the second dispensing valve 3 to move along the Y-axis direction, and a second vision detection mechanism 12. The second dispensing valve 3 first takes a picture of the part to be dispensed and positions it through the second vision detection mechanism 12, and then moves to the position of the part to be dispensed under the action of the second X-axis drive mechanism, the second Y-axis drive mechanism 11 and the second Z-axis drive mechanism 10 to dispense glue.

[0064] In some examples, such as Figure 3 As shown, there are two sets of conveying components 1, which are arranged side by side along the Y-axis to jointly support the glued parts to be dispensed, and a width adjustment mechanism 13 is provided between them for adjusting the distance. The width adjustment mechanism 13 can adjust the distance between the two conveying components 1 according to different fixture widths to match different fixtures. There are also two sets of first lifting mechanism 4 and second lifting mechanism 5, which correspond to the two sets of conveying components 1.

[0065] In some examples, such as Figure 3As shown, the width adjustment mechanism 13 includes a second motor mounted on the frame, a lead screw 1301 connected to the output end of the second motor and having two threaded sections with opposite directions of rotation, and two nut seats 1302 threadedly connected to the two threaded sections respectively. The two nut seats 1302 are respectively connected to the bases 101 of the two conveying components 1. A second slider 1304 is installed at the bottom of the base 101 of the conveying component 1, and a second slide rail 1303 is installed on the frame. The second slider 1304 and the second slide rail 1303 cooperate to provide guidance for the movement of the conveying component 1. When the second motor is started, the lead screw 1301 is driven to rotate. The two nut seats 1302 on the lead screw 1301 drive the two conveying components 1 to move closer or further apart to adjust the distance between the two conveying components 1.

[0066] In some examples, such as Figure 6 As shown, the first lifting mechanism 4 and the second lifting mechanism 5 further include a lifting drive mechanism 408, a first fixing plate 409 connected to the output end of the lifting drive mechanism 408, and a second fixing plate 410 fixed on the first fixing plate 409. A clamping cavity for clamping the lifting plate 401 is formed between the first fixing plate 409 and the second fixing plate 410. The first fixing plate 409 is equipped with a first slider 411, and a first slide rail 107 that cooperates with the first slider 411 is installed on the base 101. During the process of the lifting drive mechanism 408 driving the lifting plate 401 to rise and fall, the first slide rail 107 and the first slider 411 cooperate to ensure the linear movement of the lifting plate 401.

[0067] Working principle:

[0068] First, start the second motor to drive the lead screw 1301 to rotate. The two nut seats 1302 on the lead screw 1301 drive the two conveying components 1 to move closer or further apart to adjust the distance between the two conveying components 1 to match fixtures of different widths.

[0069] Then, the conveying assembly 1 conveys the first part to be glued to the position of the first dispensing valve 2. At this time, the lifting plate 401 in the first lifting mechanism 4 supports the part to be glued and moves it up to the position of the upper pressure plate 402. After the two clamp the part to be glued, the lower pressure plate 403 and the upper pressure plate 402 cooperate to clamp and transfer the part to be glued from between the lifting plate 401 and the upper pressure plate 402 to between the lower pressure plate 403 and the upper pressure plate 402. At this time, the first vision detection mechanism 9 takes pictures and positions the part to be glued. The first dispensing valve 2 moves to the position of the part to be glued under the action of the first X-axis drive mechanism, the first Y-axis drive mechanism 7 and the first Z-axis drive mechanism 8 to perform glue dispensing. At the same time, the lifting plate 401 moves down to reset. The conveying assembly 1 can drive the subsequent parts to be glued to the position of the second dispensing valve 3.

[0070] Next, the lifting plate 401 in the second lifting mechanism 5 supports the part to be glued and moves it up to the position of the upper pressure plate 402. After the two clamp the part to be glued, the lower pressure plate 403 and the upper pressure plate 402 cooperate to clamp and transfer the part to be glued from between the lifting plate 401 and the upper pressure plate 402 to between the lower pressure plate 403 and the upper pressure plate 402. At this time, the second vision detection mechanism 12 takes pictures and positions the part to be glued. The second glue dispensing valve 3 moves to the position of the part to be glued under the action of the second X-axis drive mechanism, the second Y-axis drive mechanism 11 and the second Z-axis drive mechanism 10 to dispense glue. At the same time, the lifting plate 401 moves down to reset.

[0071] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A dual track, dual valve dispensing apparatus, characterized by: The application relates to a dispensing device. The dispensing device comprises a conveying assembly (1) for conveying a dispensing object, a dispensing assembly comprising a first dispensing valve (2) and a second dispensing valve (3), and a lifting assembly comprising a first lifting mechanism (4) and a second lifting mechanism (5), wherein the first lifting mechanism (4) is used for lifting the dispensing object on the conveying assembly (1) for dispensing by the first dispensing valve (2) and allowing the subsequent dispensing object on the conveying assembly (1) to pass, and the second lifting mechanism (5) is used for lifting the dispensing object on the conveying assembly (1) for dispensing by the second dispensing valve (3), and the first lifting mechanism (4) and the second lifting mechanism (5) each comprise a lifting plate (401) arranged in a lifting manner, an upper pressing plate (402) matched with the lifting plate (401) to preliminarily clamp the dispensing object, and a lower pressing plate (403) matched with the upper pressing plate (402) to clamp the dispensing object to allow the lifting plate (401) to move downward and reset. The conveying assembly (1) comprises a base (101), a first motor (102) mounted on the base (101), a driving wheel (103) connected with the output end of the first motor (102), a driven wheel (104), a conveying belt (105) arranged around the driving wheel (103) and the driven wheel (104), and a supporting block (106) supported below the conveying belt (105). The middle part of the lower pressing plate (403) is hinged to the base (101), one end of the lower pressing plate (403) is a clamping part (4031) matched with the upper pressing plate (402), and the other end of the lower pressing plate (403) is a pressing part (4032) connected with a pressing mechanism (404), and the lower pressing plate (403) can rotate around the hinge point under the action of the pressing mechanism (404) to move the clamping part (4031) to the direction close to the upper pressing plate (402) to clamp the dispensing object between the clamping part (4031) and the upper pressing plate (402).

2. The dual track, dual valve dispensing apparatus of claim 1, wherein: The output end of the pressing mechanism (404) is provided with a pin shaft (405), and the lower pressing plate (403) is provided with a sliding groove (4033) through which the pin shaft (405) slides.

3. The dual track, dual valve dispensing apparatus of claim 2, wherein: The clamping part (4031) gradually decreases in thickness in the direction gradually away from the pressing part (4032).

4. The dual track, dual valve dispensing apparatus of claim 3, wherein: The pin shaft (405) is mounted on the output end of the pressing mechanism (404) through a connecting block (406), the pressing part (4032) is provided with a first avoiding groove (4034) for accommodating the connecting block (406), the middle part of the clamping part (4031) is provided with a second avoiding groove (4035), and the second avoiding groove (4035) is provided with a guide column (407).

5. The dual track, dual valve dispensing apparatus of claim 3, wherein: The dispensing assembly further comprises a sliding seat (6) and a first Y-axis driving mechanism (7) for driving the sliding seat (6) to move along the Y-axis direction.

6. The dual track, dual valve dispensing apparatus of claim 4, wherein: The sliding seat (6) is provided with a first X-axis driving mechanism for driving the first dispensing valve (2) to move along the X-axis direction, a first Z-axis driving mechanism (8) for driving the first dispensing valve (2) to move along the Z-axis direction, and a first visual detection mechanism (9).

7. The dual track, dual valve dispensing apparatus of claim 1, wherein: ​ ​ And the slide (6) is provided with a second X-axis driving mechanism for driving the second glue valve (3) to move along the X-axis direction, a second Z-axis driving mechanism (10) for driving the second glue valve (3) to move along the Z-axis direction, a second Y-axis driving mechanism (11) for driving the second glue valve (3) to move along the Y-axis direction and a second visual detection mechanism (12).

8. The dual track, dual valve dispensing apparatus of claim 1, wherein: The conveying assembly (1) has two groups, which are distributed side by side along the Y-axis direction to jointly support the glue dispensing parts and are provided with a width adjusting mechanism (13) for adjusting the distance therebetween.

9. The dual track, dual valve dispensing apparatus of claim 8, wherein: The width adjusting mechanism (13) comprises a second motor, a screw rod (1301) connected with the output end of the second motor and having two thread segments with opposite rotation directions, and two nut seats (1302) threadedly connected with the two thread segments respectively, and the two nut seats (1302) are connected with the two conveying assemblies (1) respectively.

10. The dual track, dual valve dispensing apparatus of claim 1, wherein: The first lifting mechanism (4) and the second lifting mechanism (5) further comprise a lifting driving mechanism (408), a first fixed plate (409) connected with the output end of the lifting driving mechanism (408) and a second fixed plate (410) fixed on the first fixed plate (409), a clamping cavity for clamping the lifting plate (401) is formed between the first fixed plate (409) and the second fixed plate (410), the first fixed plate (409) is provided with a first sliding block (411), and the base (101) is provided with a first sliding rail (107) matched with the first sliding block (411).

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