Automatic glue pouring machine

Abstract

The utility model belongs to the technical field of automatic glue pouring machines, and particularly relates to an automatic glue pouring machine which comprises an automatic glue pouring machine body and a fixing support, the fixing support is fixedly connected to the automatic glue pouring machine body, two first sliding grooves are symmetrically formed in the inner wall of the fixing support, and a scraping plate is connected between the two first sliding grooves in a sliding mode. The bottom face of the scraper is attached to the automatic glue pouring machine body machining platform, the two ends of the scraper are in threaded connection with two threaded rods correspondingly, and the two threaded rods are located in the two first sliding grooves correspondingly and rotationally connected with the two first sliding grooves. The driving assembly is located in the fixing support and used for driving the two threaded rods to rotate. The glue spraying device solves the problems that when glue is splashed to a working table, a user needs to manually clean the glue splashed to the working table so as not to influence subsequent work, but the manual cleaning mode of the user consumes a long time, and the working efficiency is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of automatic glue filling machines, in particular to an automatic glue filling machine. Background Art

[0002] Automatic glue dispensing machine, also known as AB glue dispensing machine, is an automated machine that controls fluids and drips, coats, and seals liquids on the surface or inside of products to achieve sealing, fixing, waterproofing, etc. Generally, two-component glue is used. It is mainly used for bonding, pouring, coating, sealing, and filling of glue, oil, and other liquids in product processes. The automatic glue dispensing machine can realize the dispensing of irregular shapes such as points, lines, arcs, and circles.

[0003] For example, a Chinese patent with publication number CN213529419U discloses an automatic glue filling machine, including a glue filling machine body, a working platform is arranged at the upper end of the glue filling machine body, a first support plate is arranged on one side of the working platform, a second support plate is arranged on the other side of the working platform, the top ends of the first support plate and the second support plate are respectively fixedly connected to the two ends of the Z axis, an X axis is arranged on one side of the Z axis, a glue delivery pipe is arranged on one side of the X axis, a glue quantity control end is arranged on one side of the second support plate, a control panel is arranged at the front end of the glue quantity control end, a glue barrel is arranged on one side of the glue quantity control end, and a stirring motor is arranged on the upper end of the glue barrel; this automatic glue filling machine can flush the inside of the glue barrel after use by arranging a water inlet and a water inlet pipe, which ensures the cleanliness of the inside of the glue barrel and also reduces the workload of the staff to a certain extent.

[0004] The above patent has the following problems:

[0005] This patent has some disadvantages when in use, such as: when the above automatic glue filling machine is in use, the glue may deviate from the predetermined trajectory during the spraying process due to the operator's inaccurate setting of glue filling parameters or adjustment of the equipment, thereby splashing onto the workbench. When the glue splashes onto the workbench, in order not to affect subsequent work, the user needs to manually clean up the glue splashed onto the workbench, but the manual cleaning method by the user takes a long time and reduces work efficiency. In view of this, we propose an automatic glue filling machine. Utility Model Content

[0006] The purpose of the utility model is to provide an automatic glue filling machine to solve the problems raised in the above background technology.

[0007] In view of this, the utility model provides an automatic glue filling machine, comprising:

[0008] An automatic glue filling machine body and a fixing bracket. The fixing bracket is fixedly connected to the automatic glue filling machine body. Two first sliding grooves are symmetrically formed on the inner wall of the fixing bracket. A scraper is slidably connected between the two first sliding grooves, and the bottom surface of the scraper is attached to the processing platform of the automatic glue filling machine body. Two threaded rods are respectively threadedly connected to both ends of the scraper, and the two threaded rods are respectively located in the two first sliding grooves and rotatably connected to the two first sliding grooves;

[0009] A driving component, which is located in the fixing bracket and is used to drive the two threaded rods to rotate;

[0010] Two slots are symmetrically formed on the inner wall of the fixing bracket. A waste collection box is inserted between the two slots;

[0011] Two second sliding grooves are symmetrically formed in the waste collection box and communicate with the two slots. A plug rod is slidably connected in the second sliding groove, and one end of the plug rod extends to the inner wall of the slot and is inserted and matched with the slot. The other end of the plug rod is fixedly connected to a spring fixed to the inner wall of the second sliding groove. An extrusion groove is formed on the plug rod;

[0012] An extrusion component, which is located in the waste collection box and is used to drive the two plug rods to move.

[0013] Based on the above structure, by setting the first sliding grooves and the scraper, it is ensured that the scraper can slide between the two first sliding grooves. By setting the driving component and the threaded rods, the user can drive the two threaded rods to rotate through the driving component, and the scraper slides along the two first sliding grooves under the action of the threads of the two threaded rods, ensuring that the scraper can scrape off the glue splashed on the working table of the automatic glue filling machine body. By setting the slots and the waste collection box, it is ensured that the waste collection box can be inserted between the two slots and that the waste collection box can collect the glue scraped off by the scraper. By setting the second sliding grooves, the plug rods and the springs, it is ensured that the two plug rods can be respectively inserted into the two slots along the two second sliding grooves under the action of the elastic forces of the two springs, fixing the waste collection box between the two slots. By setting the extrusion component and the extrusion grooves, it is ensured that the user can drive the two plug rods to move through the extrusion component and the two extrusion grooves, and one ends of the two plug rods respectively enter the two second sliding grooves from the two slots, releasing the fixation of the waste collection box.

[0014] In the above technical solution, further, the driving component includes:

[0015] Two first rotating grooves are formed in the fixing bracket and communicate with the two first sliding grooves. A worm gear is rotatably connected in the first rotating groove, and one end of the worm gear extends into the first sliding groove and is fixed to one end of the threaded rod;

[0016] A second rotation groove is provided. The second rotation groove is formed in the fixed bracket and communicates with the two first rotation grooves. A worm group is rotatably connected in the second rotation groove, and the worm group meshes with the two worm wheels.

[0017] A motor is fixedly connected to one side of the fixed bracket, and an output shaft of the motor extends into the second rotation groove and is fixed to one end of the worm group.

[0018] In this technical solution, it is ensured that the scraper can scrape off the spilled glue.

[0019] In the above technical solution, further, one end of the worm wheel is rotatably connected to the first sliding groove, and the output shaft of the motor is rotatably connected to the second rotation groove.

[0020] In this technical solution, it is ensured that one end of the worm wheel can rotate normally in the first sliding groove, and the output shaft of the motor can rotate normally in the second rotation groove.

[0021] In the above technical solution, further, the worm group is composed of two worms.

[0022] In this technical solution, it is ensured that when the worm group rotates, the worm group can drive the two worm wheels to rotate.

[0023] In the above technical solution, further, the extrusion assembly includes:

[0024] A third sliding groove is provided. The third sliding groove is formed in the waste collection box and communicates with the two second sliding grooves. An extrusion rod is slidably connected in the third sliding groove, and both ends of the extrusion rod extend into the two extrusion grooves respectively. A pulling block is fixedly connected to the extrusion rod, and one end of the pulling block penetrates through the inner wall of the third sliding groove and extends to the outside and is slidably connected to the waste collection box.

[0025] In this technical solution, it is ensured that the waste collection box can be fixed between the two slots.

[0026] In the above technical solution, further, both ends of the extrusion rod are inclined.

[0027] In this technical solution, it is ensured that the extrusion rod can extrude the two extrusion grooves.

[0028] In the above technical solution, further, both ends of the extrusion rod are inserted and matched with the two extrusion grooves respectively.

[0029] In this technical solution, it is ensured that both ends of the extrusion rod can be inserted into the two extrusion grooves respectively.

[0030] The beneficial effects of the present utility model are:

[0031] 1. For this automatic glue filling machine, by setting the first chute and the scraper, it is ensured that the scraper can slide between the two first chutes. By setting the driving component and the threaded rod, the user can drive the two threaded rods to rotate through the driving component, and the scraper slides along the two first chutes under the action of the threads of the two threaded rods, ensuring that the scraper can scrape off the glue splashed on the workbench of the automatic glue filling machine body. This solves the problem that when glue splashes onto the workbench, in order not to affect subsequent work, the user needs to manually clean the glue splashed on the workbench, but the manual cleaning method by the user takes a long time and reduces work efficiency.

[0032] 2. For this automatic glue filling machine, by setting the slot and the waste collection box, it is ensured that the waste collection box can be inserted between the two slots, and it is ensured that the waste collection box can collect the glue scraped off by the scraper. By setting the second chute, the insertion rod and the spring, it is ensured that the two insertion rods can be inserted into the two slots along the two second chutes respectively under the action of the elastic force of the two springs, fixing the waste collection box between the two slots. By setting the extrusion component and the extrusion groove, it is ensured that the user can drive the two insertion rods to move through the extrusion component and the two extrusion grooves, and one ends of the two insertion rods enter the two second chutes from the two slots respectively, releasing the fixation of the waste collection box. Description of the Drawings

[0033] Figure 1 is the overall structural schematic diagram of the present utility model;

[0034] Figure 2 is the exploded structural schematic diagram of a part of the present utility model;

[0035] Figure 3 is one of the internal structural schematic diagrams of the fixing bracket of the present utility model;

[0036] Figure 4 is the other internal structural schematic diagram of the fixing bracket of the present utility model;

[0037] Figure 5 is the internal structural schematic diagram of the waste collection box of the present utility model.

[0038] The markings in the figure are shown as:

[0039] 1. Automatic glue filling machine body; 2. Fixing bracket; 3. First chute; 4. Scraper; 5. Threaded rod; 6. Slot; 7. Waste collection box; 8. Second chute; 9. Insertion rod; 10. Extrusion groove; 11. Spring; 12. First rotation groove; 13. Worm gear; 14. Second rotation groove; 15. Worm gear set; 16. Motor; 17. Third chute; 18. Extrusion rod; 19. Pulling block. Detailed Embodiment

[0040] Next, the technical solutions in the embodiments of the present application will be clearly described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present application.

[0041] In the description of the present application, it should be noted that the terms used herein are only for describing specific embodiments, and are not intended to limit the exemplary embodiments of the present application. For the convenience of description, the sizes of the various parts shown in the drawings are not drawn in actual proportional relationship. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the said technologies, methods, and devices should be regarded as part of the authorization specification. In all the examples shown and discussed here, any specific value should be construed as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0042] It should be noted that the terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are generally of the same category, and do not limit the number of objects. For example, the first object can be one or multiple. In addition, "and / or" in the description and claims means at least one of the connected objects, and the character " / " generally means an "or" relationship between the associated objects before and after.

[0043] It should be noted that in the description of the present application, the orientation or positional relationships indicated by the orientation terms such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Without contrary description, these orientation terms do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and thus cannot be construed as limiting the protection scope of the present application; the orientation terms "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0044] It should be noted that in this application, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements not only includes those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the phrase "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising such element. In addition, it should be noted that the scope of the methods and devices in the embodiments of this application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in a reverse order according to the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0045] Embodiment 1:

[0046] Please refer to Figure 1 - Figure 5 as shown, this embodiment provides an automatic glue filling machine, comprising:

[0047] The automatic glue filling machine body 1 and the fixing bracket 2, the fixing bracket 2 is fixedly connected to the automatic glue filling machine body 1. Two first chutes 3 are symmetrically opened on the inner wall of the fixing bracket 2. A scraper 4 is slidably connected between the two first chutes 3, and the bottom surface of the scraper 4 is attached to the processing platform of the automatic glue filling machine body 1. Two threaded rods 5 are respectively threadedly connected to both ends of the scraper 4, and the two threaded rods 5 are respectively located in the two first chutes 3 and rotatably connected to the two first chutes 3;

[0048] A driving assembly, the driving assembly is located in the fixing bracket 2 and is used to drive the two threaded rods 5 to rotate;

[0049] Two slots 6, the two slots 6 are symmetrically opened on the inner wall of the fixing bracket 2, and a waste collection box 7 is inserted between the two slots 6;

[0050] Two second chutes 8, the two second chutes 8 are symmetrically opened in the waste collection box 7 and communicate with the two slots 6. A plug rod 9 is slidably connected in the second chute 8, and one end of the plug rod 9 extends to the inner wall of the slot 6 and is inserted and matched with the slot 6. The other end of the plug rod 9 is fixedly connected to a spring 11 fixed to the inner wall of the second chute 8, and an extrusion groove 10 is opened on the plug rod 9;

[0051] An extrusion assembly, the extrusion assembly is located in the waste collection box 7 and is used to drive the two plug rods 9 to move.

[0052] Embodiment 2:

[0053] This embodiment provides an automatic glue filling machine. In addition to the technical solutions of the above embodiments, it also has the following technical features. The driving assembly includes:

[0054] Two first rotating grooves 12 are opened in the fixed bracket 2 and communicate with the two first sliding grooves 3. A worm wheel 13 is rotatably connected in the first rotating groove 12, and one end of the worm wheel 13 extends into the first sliding groove 3 and is fixed to one end of the threaded rod 5;

[0055] A second rotating groove 14 is opened in the fixed bracket 2 and communicates with the two first rotating grooves 12. A worm gear set 15 is rotatably connected in the second rotating groove 14, and the worm gear set 15 meshes with the two worm wheels 13;

[0056] A motor 16 is fixedly connected to one side of the fixed bracket 2, and the output shaft of the motor 16 extends into the second rotating groove 14 and is fixed to one end of the worm gear set 15.

[0057] Among them, when in use, the user places the product on the automatic glue filling machine body 1. Subsequently, the user starts the automatic glue filling machine body 1 to let the automatic glue filling machine body 1 fill the product with glue. When it is found that the glue spills onto the automatic glue filling machine body 1 after the product is filled with glue, the user first takes out the filled product from the automatic glue filling machine body 1. Subsequently, the user starts the motor 16 to let the output shaft of the motor 16 drive the worm gear set 15 to rotate in the second rotating groove 14, so that the worm gear set 15 drives the two worm wheels 13 to rotate in the two first rotating grooves 12 respectively, and the two worm wheels 13 drive the two threaded rods 5 to rotate in the two first sliding grooves 3 respectively, so that the scraping plate 4 moves along the two first sliding grooves 3 under the action of the threads of the two threaded rods 5. When the scraping plate 4 moves, the scraping plate 4 will scrape off the glue spilled on the automatic glue filling machine body 1 and push it into the waste collecting box 7 to ensure that the scraping plate 4 can scrape off the spilled glue.

[0058] Embodiment 3:

[0059] This embodiment provides an automatic glue filling machine. In addition to the technical solutions of the above embodiments, it also has the following technical features. One end of the worm wheel 13 is rotatably connected to the first sliding groove 3, and the output shaft of the motor 16 is rotatably connected to the second rotating groove 14.

[0060] Among them, it is ensured that one end of the worm wheel 13 can rotate normally in the first sliding groove 3, and it is ensured that the output shaft of the motor 16 can rotate normally in the second rotating groove 14.

[0061] Embodiment 4:

[0062] This embodiment provides an automatic glue filling machine. In addition to the technical solutions of the above embodiments, it also has the following technical features. The worm gear set 15 is composed of two worms.

[0063] Among them, it is ensured that when the worm gear set 15 rotates, the worm gear set 15 can drive the two worm wheels 13 to rotate.

[0064] Embodiment 5:

[0065] This embodiment provides an automatic glue filling machine. In addition to including the technical solutions of the above embodiments, it also has the following technical features. The extrusion assembly includes:

[0066] A third chute 17 is opened in the waste collecting box 7 and is communicated with the two second chutes 8. A pressing rod 18 is slidably connected in the third chute 17, and both ends of the pressing rod 18 respectively extend into the two pressing grooves 10. A pulling block 19 is fixedly connected to the pressing rod 18, and one end of the pulling block 19 penetrates through the inner wall of the third chute 17 and extends to the outside and is slidably connected with the waste collecting box 7.

[0067] Among them, when the waste collecting box 7 is filled with glue lumps, the user presses down the pulling block 19 with his hand, so that the pulling block 19 drives the pressing rod 18 to move downward along the third chute 17, so that both ends of the pressing rod 18 respectively press the two pressing grooves 10. When the two pressing grooves 10 are pressed, one ends of the two inserting rods 9 will respectively enter the two second chutes 8 from the two inserting slots 6 and respectively compress the two springs 11. At this time, the fixation of the waste collecting box 7 is released. Subsequently, the user pulls out the waste collecting box 7 from between the two inserting slots 6 by hand and centrally cleans the glue lumps in the waste collecting box 7. After the cleaning is completed, the user inserts the waste collecting box 7 back between the two inserting slots 6 by hand and releases the hand pressing the pulling block 19, so that one ends of the two inserting rods 9 are respectively inserted into the two inserting slots 6 under the action of the rebounding forces of the two springs 11 to fix the waste collecting box 7, ensuring that the waste collecting box 7 can be fixed between the two inserting slots 6.

[0068] Embodiment 6:

[0069] This embodiment provides an automatic glue filling machine. In addition to including the technical solutions of the above embodiments, it also has the following technical features. Both ends of the pressing rod 18 are inclined.

[0070] Among them, it is ensured that the pressing rod 18 can press the two pressing grooves 10.

[0071] Embodiment 7:

[0072] This embodiment provides an automatic glue filling machine. In addition to including the technical solutions of the above embodiments, it also has the following technical features. Both ends of the pressing rod 18 are respectively in plug-in fit with the two pressing grooves 10.

[0073] Among them, it is ensured that both ends of the pressing rod 18 can be respectively inserted into the two pressing grooves 10.

[0074] In use, the user places the product on the automatic glue filling machine body 1. Subsequently, the user starts the automatic glue filling machine body 1 to let the automatic glue filling machine body 1 fill the product with glue. When it is found that the glue spills onto the automatic glue filling machine body 1 after the product is filled with glue, the user first takes out the filled product from the automatic glue filling machine body 1. Then the user starts the motor 16 to let the output shaft of the motor 16 drive the worm group 15 to rotate in the second rotating groove 14, so that the worm group 15 drives the two worm wheels 13 to rotate in the two first rotating grooves 12 respectively, and the two worm wheels 13 drive the two threaded rods 5 to rotate in the two first sliding grooves 3 respectively. The scraper 4 moves along the two first sliding grooves 3 under the action of the threads of the two threaded rods 5. When the scraper 4 moves, the scraper 4 scrapes the spilled glue on the automatic glue filling machine body 1 and pushes it into the waste collection box 7 to ensure that the scraper 4 can scrape off the spilled glue;

[0075] When the waste collection box 7 is full of glue lumps, the user presses down the pull block 19 with hand to let the pull block 19 drive the extrusion rod 18 to move downward along the third sliding groove 17, so that the two ends of the extrusion rod 18 respectively extrude the two extrusion grooves 10. When the two extrusion grooves 10 are extruded, one ends of the two insertion rods 9 will respectively enter the two second sliding grooves 8 from the two insertion slots 6 and compress the two springs 11 respectively. At this time, the fixation of the waste collection box 7 is released. Then the user pulls out the waste collection box 7 from between the two insertion slots 6 with hand and centrally cleans the glue lumps in the waste collection box 7. After the cleaning is completed, the user inserts the waste collection box 7 back between the two insertion slots 6 with hand and releases the hand pressing the pull block 19, so that one ends of the two insertion rods 9 are respectively inserted into the two insertion slots 6 under the action of the rebounding force of the two springs 11 to fix the waste collection box 7 and ensure that the waste collection box 7 can be fixed between the two insertion slots 6.

[0076] The embodiments of the present application have been described above in conjunction with the accompanying drawings. Without conflict, the embodiments and the features in the embodiments in the present application can be combined with each other. The present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms without departing from the purpose of the present application and the scope protected by the claims, and all belong to the protection scope of the present application.

Claims

1. An automatic glue filling machine, characterized in that: include: An automatic glue pouring machine body (1) and a fixed bracket (2), wherein the fixed bracket (2) is fixedly connected to the automatic glue pouring machine body (1), and two first slide grooves (3) are symmetrically provided on the inner wall of the fixed bracket (2), a scraper (4) is slidably connected between the two first slide grooves (3), and the bottom surface of the scraper (4) is in contact with the processing platform of the automatic glue pouring machine body (1), and two threaded rods (5) are respectively threadedly connected at both ends of the scraper (4), and the two threaded rods (5) are respectively located in the two first slide grooves (3) and are rotatably connected to the two first slide grooves (3); A driving assembly, the driving assembly being located in the fixed bracket (2) and being used for driving the two threaded rods (5) to rotate; Two slots (6), the two slots (6) are symmetrically arranged on the inner wall of the fixed bracket (2), and a waste collection box (7) is inserted between the two slots (6); Two second slide grooves (8), the two second slide grooves (8) are symmetrically arranged in the waste collection box (7) and are connected to the two slots (6), a plug rod (9) is slidably connected in the second slide groove (8), and one end of the plug rod (9) extends to the inner wall of the slot (6) and is plugged into the slot (6), the other end of the plug rod (9) is fixedly connected to a spring (11) fixed to the inner wall of the second slide groove (8), and an extrusion groove (10) is arranged on the plug rod (9); The extrusion assembly is located in the waste collection box (7) and is used to drive the two insertion rods (9) to move.

2. The automatic glue filling machine according to claim 1, characterized in that: The drive assembly comprises: Two first rotating grooves (12), the two first rotating grooves (12) are arranged in the fixed bracket (2) and are connected to the two first sliding grooves (3), a worm wheel (13) is rotatably connected in the first rotating groove (12), and one end of the worm wheel (13) extends into the first sliding groove (3) and is fixed to one end of the threaded rod (5); A second rotating groove (14), the second rotating groove (14) is provided in the fixed bracket (2) and is connected to the two first rotating grooves (12), a worm group (15) is rotatably connected in the second rotating groove (14), and the worm group (15) is meshed with the two worm wheels (13); A motor (16) is fixedly connected to one side of the fixed bracket (2), and an output shaft of the motor (16) extends into the second rotating groove (14) and is fixed to one end of the worm gear set (15).

3. The automatic glue filling machine according to claim 2, characterized in that: One end of the worm wheel (13) is rotationally connected to the first sliding groove (3), and the output shaft of the motor (16) is rotationally connected to the second rotating groove (14).

4. The automatic glue filling machine according to claim 2, characterized in that: The worm gear set (15) consists of two worm gears.

5. The automatic glue filling machine according to claim 1, characterized in that: The extrusion assembly comprises: A third slide groove (17), wherein the third slide groove (17) is provided in the waste collection box (7) and is connected to the two second slide grooves (8); a squeezing rod (18) is slidably connected in the third slide groove (17), and two ends of the squeezing rod (18) respectively extend into the two squeezing grooves (10); a pulling block (19) is fixedly connected to the squeezing rod (18), and one end of the pulling block (19) passes through the inner wall of the third slide groove (17) and extends to the outside to be slidably connected to the waste collection box (7).

6. The automatic glue filling machine according to claim 5, characterized in that: The two ends of the extrusion rod (18) are arranged obliquely.

7. The automatic glue filling machine according to claim 6, characterized in that: The two ends of the extrusion rod (18) are respectively plugged into and matched with the two extrusion grooves (10).

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