CN217029537U

CN217029537U - Tool for pressing, curing and baking automobile water falling groove

Info

Publication number: CN217029537U
Application number: CN202220412983.XU
Authority: CN
Inventors: 张扬; 何文宝
Original assignee: Suzhou Haitai Automobile Technology Co ltd
Current assignee: Suzhou Haitai Automobile Technology Co ltd
Priority date: 2022-02-28
Filing date: 2022-02-28
Publication date: 2022-07-22
Anticipated expiration: 2032-02-28

Abstract

The utility model provides a frock that is used for car groove pressfitting solidification of falling into water toasts, includes the jacking device that toasts board, two symmetries set up, the groove support of falling into water, the groove support turning device that falls into water, the self-locking mechanism that two symmetries set up, the groove support of falling into water pushes down subassembly, elevating platform and the groove support lower mould that falls into water, the self-locking mechanism that two symmetries set up can compress tightly on the both sides limit of the groove support turning device that falls into water, the groove support that falls into water pushes down the subassembly and is connected with the groove support turning device that falls into water, the groove support that falls into water and the groove support that falls into water push down the subassembly and connect, the groove support lower mould that falls into water is equipped with the groove body of falling into water. According to the tool for pressing, curing and baking the automobile water falling groove, the water falling groove supports the lower die to realize accurate positioning of the water falling groove body, glue dispensing of a subsequent glue dispensing gun is facilitated, the water falling groove support can be automatically installed at the designated position of the water falling groove body through the arranged overturning and pressing assembly, the tool is structurally designed, operation is convenient, and working efficiency is improved.

Description

Tool for pressing, curing and baking automobile water falling groove

Technical Field

The utility model belongs to the technical field of advanced production, manufacturing and automation, and particularly relates to a tool for pressing, curing and baking an automobile water falling groove.

Background

The lower trim of the automobile front windshield is generally called sink trim. Along with improvement of the matching requirements of consumers on automobile interior trim, if the automobile water falling groove decorating part can be matched with the front windshield glass, the gap is uniform, the surface difference is small, and particularly, good aesthetic effect is generated by matching of fine products, the competitiveness can be obviously improved in cars of the same level. The assembly between the automobile front windshield glass and the gutter channel decorating part needs good appearance performance, namely the surface difference and the gap between the gutter channel decorating part and the automobile front windshield glass, and also needs to ensure the functionality of the gutter channel decorating part, namely the prevention of water leakage of the front windshield glass, the auxiliary cooling of an engine compartment and the diversion of rainwater.

The existing sink part needs to be subjected to plasma treatment on a sink body and a sink bracket firstly due to assembly requirements, so that the surface adhesive force of the part is improved, then the glue coating treatment is carried out, and then the assembly, the pressing and the shaping of the two parts are carried out. The traditional processing mode of the parts is manual operation. Because the assembly process of the part is various, and the precision requirements on plasma treatment, gluing and assembly pressing are higher, the traditional treatment mode is low in efficiency, time-consuming in manual treatment along with the increase of the bending degree and the treatment area of the product, and phenomena of incomplete product treatment, missing treatment, inaccurate pressing and positioning and the like easily occur.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: the utility model aims to provide a tool for pressing, curing and baking an automobile water falling groove, and solves the problems that the production precision of parts and the production automation production requirement cannot be met by traditional manual operation in the process of assembling the water falling groove in the prior art.

The technical scheme is as follows: the utility model provides a tool for pressing, curing and baking an automobile sink, which comprises a baking machine table, two symmetrically arranged jacking devices, a sink support turnover device, two symmetrically arranged self-locking mechanisms, a sink support pressing assembly, a lifting workbench and a sink support lower die, wherein the two symmetrically arranged jacking devices are arranged on the baking machine table and connected with the lifting workbench, the two symmetrically arranged jacking devices can drive the lifting workbench to move along the vertical direction, the sink support turnover device, the two symmetrically arranged self-locking mechanisms and the sink support lower die are all arranged on the lifting workbench, the two symmetrically arranged self-locking mechanisms can be tightly pressed on two sides of the sink support turnover device, and the sink support pressing assembly is connected with the sink support turnover device, the water falling groove support is connected with the water falling groove support pressing assembly, and the water falling groove support lower die is provided with a water falling groove body. According to the tooling for pressing, curing and baking the automobile water falling groove, the water falling groove supports the lower die, so that the water falling groove body is accurately positioned, a subsequent glue dispensing gun can conveniently perform glue dispensing, the water falling groove support can be automatically installed at the designated position of the water falling groove body through the arranged turning and pressing assembly, the tooling is structurally designed, the operation is convenient, and the working efficiency is improved.

Furthermore, according to the tool for pressing, curing and baking the automobile water falling groove, the baking machine table is provided with the baking oven, and the baking oven is located below the water falling groove supporting lower die. The drying oven that sets up is used for falling into water the groove and supports the toasting of the groove body point glue position of falling into water of placing on the lower mould.

Further, foretell a frock that is used for car groove pressfitting solidification of falling into water toasts, the jacking device includes jacking cylinder, cylinder installing support, jacking backup pad and jacking connecting plate, cylinder installing support and toast board fixed connection, the jacking cylinder is fixed to be set up on the cylinder installing support to the piston rod and the jacking backup pad of jacking cylinder are connected, the up end and the jacking connecting plate of jacking backup pad are connected, jacking connecting plate and elevating table are connected. The jacking cylinder can jack up the lifting workbench to replace the falling water groove supporting lower die.

Further, foretell a frock for car groove pressfitting solidification toasts that falls into water, be equipped with two symmetry settings on the cylinder installing support and lead sliding sleeve one, the lower terminal surface of jacking backup pad is connected with two symmetry settings's guide post one, two symmetry settings's guide sliding sleeve one and two symmetry settings's guide post one-to-one correspond the setting to guide post one and guide sliding sleeve sliding connection.

Furthermore, the tooling for pressing, curing and baking the automobile water-falling groove comprises a water-falling groove support turning device, a turning driving motor, a turning shaft, two rotating shaft supporting seats symmetrically arranged, a turning plate and a motor mounting support, the two symmetrically arranged rotating shaft supporting seats are fixedly arranged on the upper end surface of the lifting workbench, the motor mounting bracket is fixedly connected with one of the two symmetrically arranged rotating shaft supporting seats, the overturning driving motor is fixedly arranged on the motor mounting bracket, the rotating shaft of the turnover driving motor is connected with the turnover shaft through a coupler, the turnover shaft is erected on two symmetrically arranged rotating shaft supporting seats, one end of the turnover plate is connected with the turnover shaft, and the turnover driving motor can drive the turnover plate to be positioned right above the water falling groove supporting lower die, and the water falling groove support pressing assembly is arranged on the turnover plate. Through automatic upset operation, the groove support that falls into water that fixes a position the manual work overturns automatically to place on the groove body that falls into water, reduced workman's the amount of labour, realized automated production.

Further, foretell a frock that is used for car groove pressfitting solidification of falling into water toasts, the groove support push down subassembly of falling into water includes push down driving actuating cylinder, holding down plate, location driving actuating cylinder, pilot pin and a set of groove support sucking disc of falling into water, push down driving actuating cylinder and location driving actuating cylinder are all fixed to be set up on the returning face plate, push down the piston rod and the holding down plate of driving actuating cylinder and be connected, the piston rod and the pilot pin of location driving actuating cylinder are connected to location driving actuating cylinder can drive the pilot pin and insert in the groove support lower mould of falling into water, a set of groove support sucking disc of falling into water sets up on the returning face plate to a set of groove support sucking disc of falling into water adsorbs the groove support of falling into water. The positioning is carried out by the positioning driving cylinder, and then the water falling groove support is released at a designated position by pressing.

Furthermore, according to the tool for pressing, curing and baking the automobile water falling groove, the turnover plate is provided with the second group of guide sliding sleeves, the lower pressing plate is connected with the second group of guide posts, the second group of guide sliding sleeves and the second group of guide posts are arranged in a one-to-one correspondence manner, and the second guide posts are connected with the second guide sliding sleeves in a sliding manner.

Further, foretell a frock that is used for car groove pressfitting solidification of falling into water toasts, self-locking mechanism includes auto-lock cylinder, auto-lock swivel support plate, auto-lock pendulum rod and auto-lock pressure head, the one end and the elevating platform of auto-lock cylinder are connected to the piston rod of auto-lock cylinder and the one end handing-over of auto-lock pendulum rod, the intermediate position of auto-lock pendulum rod is connected through pivot and auto-lock swivel support plate, the lateral wall fixed connection of auto-lock swivel support plate and pivot supporting seat, the other end and the auto-lock pressure head that the auto-lock cylinder was kept away from to the auto-lock pendulum rod are connected, the auto-lock pressure head can compress tightly on the returning face plate. The self-locking air cylinder drives the self-locking pressure head to compress the turnover plate, so that the assembly position can not deviate, and the stability is improved.

The technical scheme shows that the utility model has the following beneficial effects: according to the tooling for pressing, curing and baking the automobile water-falling groove, the water-falling groove support overturning device, the two symmetrically arranged self-locking mechanisms and the water-falling groove support pressing assembly are arranged, so that the water-falling groove support can be automatically placed at the glue dispensing position of the water-falling groove body, pressing, drying and other processes can be continuously completed, the traditional manual operation is changed into an automatic production mode, the production efficiency is greatly improved, the labor capacity of operators is reduced, the positioning between the water-falling groove body and the water-falling groove support can be accurately carried out through the positioning device arranged on the control system, the glue dispensing is ensured to be positioned at a specified position, and the consistency of products is ensured.

Drawings

Fig. 1 is a schematic diagram of an overall structure of a tool for pressing, curing and baking an automobile water-dropping groove;

FIG. 2 is a schematic diagram of the overall structure of the tool for pressing, curing and baking the automobile water falling groove;

fig. 3 is a schematic partial structural diagram i of the tool for pressing, curing and baking the automobile water-dropping groove according to the utility model;

fig. 4 is a schematic partial structural view of the tool for pressing, curing and baking the automobile water falling groove according to the utility model;

fig. 5 is a first structural schematic diagram of the downpipe bracket turnover device and the downpipe bracket pressing assembly according to the present invention;

fig. 6 is a second structural schematic diagram of the downpipe bracket turnover device and the downpipe bracket pressing assembly according to the present invention;

fig. 7 is a third schematic structural view of the downpipe bracket turnover device and the downpipe bracket pressing assembly according to the present invention;

fig. 8 is a fourth schematic structural view of the downpipe support turnover device and the downpipe support pressing assembly according to the present invention.

In the figure: the baking machine comprises a baking machine table 201, a jacking device 202, a water falling groove support 203, a water falling groove support turning device 204, a self-locking mechanism 205, a water falling groove support pressing assembly 206, a lifting workbench 207, a water falling groove support lower die 209, a jacking cylinder 210, a cylinder mounting support 211, a jacking support plate 212, a jacking connecting plate 213, a guide sliding sleeve I214, a guide column I215, a turning drive motor 216, a turning shaft 217, a rotating shaft support seat 218, a turning plate 219, a motor mounting support 220, a pressing drive cylinder 221, a pressing plate 222, a positioning drive cylinder 223, a positioning needle 224, a water falling groove support sucker 225, a guide sliding sleeve II 226, a guide column II 227, a self-locking cylinder 228, a self-locking rotary support plate 229, a self-locking swing rod 230 and a self-locking pressure head 231.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature "on," "above" and "over" the second feature may include the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Examples

The tooling for pressing, curing and baking the automobile water falling groove as shown in fig. 1 and 2 comprises a baking machine table 201, two symmetrically arranged jacking devices 202, a water falling groove support 203, a water falling groove support turnover device 204, two symmetrically arranged self-locking mechanisms 205, a water falling groove support pressing assembly 206, a lifting workbench 207 and a water falling groove support lower die 209, wherein the two symmetrically arranged jacking devices 202 are arranged on the baking machine table 201, the two symmetrically arranged jacking devices 202 are connected with the lifting workbench 207, the two symmetrically arranged jacking devices 202 can drive the lifting workbench 207 to move in the vertical direction, the water falling groove support turnover device 204, the two symmetrically arranged self-locking mechanisms 205 and the water falling groove support lower die 209 are all arranged on the lifting workbench 207, the two symmetrically arranged self-locking mechanisms 205 can be pressed on two side edges of the water falling groove support turnover device 204, the water falling groove support pressing component 206 is connected with the water falling groove support turning device 204, the water falling groove support 203 is connected with the water falling groove support pressing component 206, and a water falling groove body is arranged on the water falling groove support lower die 209. An oven is arranged on the baking machine table 201 and is positioned below the water falling groove supporting lower die 209.

The water falling groove support lower die 209 plays a role in stably supporting the water falling groove body, the water falling groove support 203 is placed on the water falling groove support pressing component 206, the water falling groove support overturning device 204 drives the water falling groove support pressing component 206 to overturn above the water falling groove body, the water falling groove support overturning device 204 is pressed tightly by the two symmetrically arranged self-locking mechanisms 205, and then glue dispensing, pressing and curing between the water falling groove body and the water falling groove support 203 are carried out.

The jacking device 202 shown in fig. 3 and 4 comprises a jacking cylinder 210, a cylinder mounting bracket 211, a jacking support plate 212 and a jacking connecting plate 213, the cylinder mounting bracket 211 is fixedly connected with the baking machine table 201, the jacking cylinder 210 is fixedly arranged on the cylinder mounting bracket 211, a piston rod of the jacking cylinder 210 is connected with the jacking support plate 212, the upper end surface of the jacking support plate 212 is connected with the jacking connecting plate 213, and the jacking connecting plate 213 is connected with the lifting workbench 207. The cylinder mounting bracket 211 is provided with two guide sliding sleeves 214 which are symmetrically arranged, the lower end face of the jacking support plate 212 is connected with two guide posts 215 which are symmetrically arranged, the two guide sliding sleeves 214 which are symmetrically arranged and the two guide posts 215 which are symmetrically arranged are arranged in a one-to-one correspondence manner, and the guide posts 215 are connected with the guide sliding sleeves 214 in a sliding manner. The jacking cylinder 210 can jack up the lifting workbench 207, so that the replacement of the lower supporting die 209 of the water falling groove is convenient.

The sink support turning device 204 shown in fig. 5-8 comprises a turning drive motor 216, a turning shaft 217, two symmetrically arranged rotating shaft supporting seats 218, a turning plate 219 and a motor mounting support 220, the two symmetrically arranged rotating shaft supporting seats 218 are fixedly arranged on the upper end surface of the lifting workbench 207, the motor mounting bracket 220 is fixedly connected with one of the two symmetrically arranged rotating shaft supporting seats 218, the overturning driving motor 216 is fixedly arranged on the motor mounting bracket 220, the rotating shaft of the turnover driving motor 216 is connected with a turnover shaft 217 through a coupler, the turnover shaft 217 is erected on two symmetrically arranged rotating shaft supporting seats 218, one end of the turnover plate 219 is connected with the turnover shaft 217, and the inversion driving motor 216 may drive the inversion plate 219 to be positioned right above the sink support lower mold 209, and the sink support push-down assembly 206 is provided on the inversion plate 219. The turning driving motor 216 is started to drive the turning shaft 217 to rotate, so that the turning plate 219 is turned, and the falling water tank support pressing assembly 206 is arranged on the turning plate 219, so that the pressing between the falling water tank body and the falling water tank support 203 is realized.

Wherein, the water falling groove support pressing component 206 comprises a pressing driving cylinder 221, a pressing plate 222, a positioning driving cylinder 223, a positioning pin 224 and a set of water falling groove support suckers 225, the pressing driving cylinder 221 and the positioning driving cylinder 223 are both fixedly arranged on the turnover plate 219, a piston rod of the pressing driving cylinder 221 is connected with the pressing plate 222, a piston rod of the positioning driving cylinder 223 is connected with the positioning pin 224, and the positioning driving cylinder 223 can drive the positioning pin 224 to be inserted into the water falling groove support lower die 209, the set of water falling groove support suckers 225 is arranged on the turnover plate 219, and the set of water falling groove support suckers 225 adsorbs the water falling groove support 203. The turnover plate 219 is provided with a group of second guide sliding sleeves 226, the lower pressing plate 222 is connected with a group of second guide posts 227, the group of second guide sliding sleeves 226 and the group of second guide posts 227 are arranged in a one-to-one correspondence manner, and the second guide posts 227 are slidably connected with the second guide sliding sleeves 226. The water falling groove support suckers 225 can adsorb the water falling groove support 203, and after the driving cylinder 221 is pressed down to drive the pressing plate 222 to be in place, the water falling groove support suckers 225 release the water falling groove support 203 on the water falling groove body.

In addition, the self-locking mechanism 205 comprises a self-locking cylinder 228, a self-locking rotary supporting plate 229, a self-locking oscillating bar 230 and a self-locking pressure head 231, one end of the self-locking cylinder 228 is connected with the lifting workbench 207, a piston rod of the self-locking cylinder 228 is connected with one end of the self-locking oscillating bar 230, the middle position of the self-locking oscillating bar 230 is connected with the self-locking rotary supporting plate 229 through a rotating shaft, the self-locking rotary supporting plate 229 is fixedly connected with the side wall of the rotating shaft supporting seat 218, the other end, far away from the self-locking cylinder 228, of the self-locking oscillating bar 230 is connected with the self-locking pressure head 231, and the self-locking pressure head 231 can be pressed on the turnover plate 219.

The piston rod of the self-locking cylinder 228 extends or retracts to drive the self-locking swing rod 230 to rotate around the rotating shaft arranged between the self-locking swing rod and the self-locking rotary support plate 229, so that the self-locking pressure head 231 is opened or closed.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that modifications can be made by those skilled in the art without departing from the principle of the present invention, and these modifications should also be construed as the protection scope of the present invention.

Claims

1. The utility model provides a frock that is used for car groove pressfitting solidification of falling into water to toast which characterized in that: comprises a baking machine table (201), two symmetrically arranged jacking devices (202), a water falling groove support (203), a water falling groove support turnover device (204), two symmetrically arranged self-locking mechanisms (205), a water falling groove support pressing assembly (206), a lifting workbench (207) and a water falling groove support lower die (209), wherein the two symmetrically arranged jacking devices (202) are arranged on the baking machine table (201), the two symmetrically arranged jacking devices (202) are connected with the lifting workbench (207), the two symmetrically arranged jacking devices (202) can drive the lifting workbench (207) to move along the vertical direction, the water falling groove support turnover device (204), the two symmetrically arranged self-locking mechanisms (205) and the water falling groove support lower die (209) are arranged on the lifting workbench (207), and the two symmetrically arranged self-locking mechanisms (205) can be pressed on two side edges of the water falling groove support turnover device (204), the water falling groove support downward pressing assembly (206) is connected with the water falling groove support overturning device (204), the water falling groove support (203) is connected with the water falling groove support downward pressing assembly (206), and the water falling groove support lower die (209) is provided with a water falling groove body.

2. The tool for pressing, curing and baking the automobile water falling groove according to claim 1, characterized in that: an oven is arranged on the baking machine table (201), and the oven is positioned below the water falling groove supporting lower die (209).

3. The tool for pressing, curing and baking the automobile water falling groove according to claim 1 or 2, characterized in that: jacking device (202) are including jacking cylinder (210), cylinder installing support (211), jacking backup pad (212) and jacking connecting plate (213), cylinder installing support (211) and baking machine platform (201) fixed connection, jacking cylinder (210) are fixed to be set up on cylinder installing support (211) to the piston rod and the jacking backup pad (212) of jacking cylinder (210) are connected, the up end and the jacking connecting plate (213) of jacking backup pad (212) are connected, jacking connecting plate (213) and elevating platform (207) are connected.

4. The tool for pressing, curing and baking the automobile water falling groove according to claim 3, characterized in that: the cylinder installing support is characterized in that two guide sliding sleeves (214) which are symmetrically arranged are arranged on the cylinder installing support (211), the lower end face of the jacking supporting plate (212) is connected with two guide posts (215) which are symmetrically arranged, the two guide sliding sleeves (214) which are symmetrically arranged and the two guide posts (215) which are symmetrically arranged are arranged in a one-to-one correspondence mode, and the guide posts (215) are connected with the guide sliding sleeves (214) in a sliding mode.

5. The tool for pressing, curing and baking the automobile water falling groove according to claim 1 or 2, characterized in that: the water falling groove support overturning device (204) comprises an overturning driving motor (216), an overturning shaft (217), two symmetrically arranged rotating shaft supporting seats (218), an overturning plate (219) and a motor mounting support (220), wherein the two symmetrically arranged rotating shaft supporting seats (218) are fixedly arranged on the upper end surface of the lifting workbench (207), the motor mounting support (220) is fixedly connected with one of the two symmetrically arranged rotating shaft supporting seats (218), the overturning driving motor (216) is fixedly arranged on the motor mounting support (220), a rotating shaft of the overturning driving motor (216) is connected with the overturning shaft (217) through a coupler, the overturning shaft (217) is erected on the two symmetrically arranged rotating shaft supporting seats (218), one end of the overturning plate (219) is connected with the overturning shaft (217), and the overturning driving motor (216) can drive the overturning plate (219) to be positioned right above the water falling groove supporting lower die (209), the water falling groove support pressing assembly (206) is arranged on the turnover plate (219).

6. The tool for pressing, curing and baking the automobile water falling groove according to claim 5, wherein the tool comprises: the falling water tank support pressing assembly (206) comprises a pressing driving cylinder (221), a pressing plate (222), a positioning driving cylinder (223), a positioning needle (224) and a group of falling water tank support suckers (225), wherein the pressing driving cylinder (221) and the positioning driving cylinder (223) are fixedly arranged on a turnover plate (219), a piston rod of the pressing driving cylinder (221) is connected with the pressing plate (222), a piston rod of the positioning driving cylinder (223) is connected with the positioning needle (224), the positioning driving cylinder (223) can drive the positioning needle (224) to be inserted into a falling water tank support lower die (209), the group of falling water tank support suckers (225) is arranged on the turnover plate (219), and the falling water tank support suckers (203) are adsorbed by the group of falling water tank support suckers (225).

7. The tool for pressing, curing and baking the automobile water falling groove according to claim 6, characterized in that: a group of second guide sliding sleeves (226) is arranged on the turnover plate (219), a group of second guide posts (227) is connected to the lower pressing plate (222), the group of second guide sliding sleeves (226) and the group of second guide posts (227) are arranged in a one-to-one correspondence manner, and the second guide posts (227) are slidably connected with the second guide sliding sleeves (226).

8. The tool for pressing, curing and baking the automobile water falling groove according to claim 1, wherein the tool comprises: the self-locking mechanism (205) comprises a self-locking cylinder (228), a self-locking rotary supporting plate (229), a self-locking oscillating bar (230) and a self-locking pressure head (231), one end of the self-locking cylinder (228) is connected with the lifting workbench (207), a piston rod of the self-locking cylinder (228) is connected with one end of the self-locking oscillating bar (230), the middle position of the self-locking oscillating bar (230) is connected with the self-locking rotary supporting plate (229) through a rotating shaft, the self-locking rotary supporting plate (229) is fixedly connected with the side wall of the rotating shaft supporting seat (218), the other end, far away from the self-locking cylinder (228), of the self-locking oscillating bar (230) is connected with the self-locking pressure head (231), and the self-locking pressure head (231) can be pressed on the turnover plate (219).