Embossing equipment for basketball production

Abstract

The utility model relates to the technical field of embossing equipment, and disclose a basketball production is with embossing equipment, including machine body base, the top of machine body base is fixedly installed with support frame, horizontal direction guide rod no.

Description

Technical Field

[0001] This utility model relates to the field of embossing equipment technology, specifically an embossing device for basketball production. Background Technology

[0002] Currently, in basketball manufacturing, in order to enhance the aesthetics of the basketball and promote their own businesses, manufacturers often print their trademarks or other information on the basketball leather to address the shortcomings of existing technology. Leather is animal hide that has undergone physical and chemical processing such as hair removal and tanning, and has been denatured to prevent decay. Leather is composed of natural protein fibers tightly woven in three-dimensional space, and its surface has a special grain layer with natural grain and luster, and a comfortable feel.

[0003] Existing embossing equipment typically uses bolts or welding to connect the molds and drive mechanisms. When changing molds of different specifications, it is necessary to use professional tools such as wrenches and screwdrivers to disassemble the fasteners one by one, which increases the mold change time and may reduce the production efficiency of the equipment for different embossing processes. Therefore, we have introduced an embossing equipment for basketball production. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides an embossing device for basketball production, which has the advantages of rapid module assembly and automatic ejection, thus solving the problems mentioned in the background art.

[0005] This utility model provides the following technical solution: an embossing device for basketball production, comprising a machine base, a support frame, a first horizontal guide rod, a second horizontal guide rod, and a second cylinder fixedly installed on the top of the machine base, a top cover provided on the top of the support frame, an auxiliary pressure rod provided on the inner wall of the top cover, a first cylinder fixedly installed on the top of the top cover, a demolding template provided at the telescopic end of the first cylinder, an upper pressing film provided at the bottom of the demolding template, a positioning rod provided at the bottom of the upper pressing film, a connecting assembly provided in the inner cavity of the upper pressing film, and a box provided on the top of the machine base. The box body has a pressure membrane on its top, a positioning groove on its inner wall, an ejection assembly in its inner cavity, and a mounting post fixedly mounted on the top of the upper pressure membrane. The outer wall of the mounting post has a first slot. The inner cavity of the ejector plate has a square groove, a circular groove, and a second slot. The inner cavity of the circular groove has a convex rod and a first spring. The inner wall of the square groove is rotatably connected to a pulley. The outer wall of the convex rod has a wire rope. A limit rod is fixedly mounted on the top of the ejector plate, and a pull cylinder is provided on the top of the ejector plate.

[0006] As a preferred technical solution of this utility model: the square groove, the circular groove, the convex insertion rod, the first spring, the wire rope and the pulley are regarded as a set of movable components, and the number of such movable components is four, which are arranged in a circular array. The number of the first slots is four, and the four first slots are arranged in a circular array on the outer wall of the mounting column. The number of the limiting rods is four, and the four limiting rods are arranged in a circular array and penetrate the inner wall of the pull tube.

[0007] As a preferred technical solution of this utility model: the outer wall of one side of the four convex insertion rods is adapted to the shape of the inner wall of the four first slots, and the outer wall of the other side of the four convex insertion rods is slidably fitted to the inner wall of the four circular grooves. The four first springs are located on one side of the four convex insertion rods, with one end overlapping the outer wall of the four first springs and the other end overlapping the inner wall of the four circular grooves. One end of the four steel wire ropes is connected and fixed to one side of the outer wall of the four convex insertion rods, and the other end is connected and fixed to the outer wall of the pull tube. The outer wall of the four steel wire ropes and the outer edge of the four pulleys are fitted at a 90-degree angle. The outer wall of the mounting post is adapted to the shape of the inner wall of the second slot.

[0008] As a preferred technical solution of this utility model: the bottom of the box body is adapted to the shape of the outer wall of the horizontal guide rod, the outer wall of the positioning rod is adapted to the shape of the inner wall of the positioning groove, and the number of auxiliary pressure rods is four, which are distributed in a rectangular array on the top of the template.

[0009] As a preferred technical solution of this utility model: the ejection assembly includes a first conical push rod fixedly installed on the top of the second transverse guide rod, a longitudinal guide rod fixedly installed on the inner wall of the box, a push plate provided on the top of the longitudinal guide rod, a top rod fixedly installed on the top of the push plate, a second spring provided in the inner cavity of the box, a slot provided on the outer wall of the box, and a second conical push rod fixedly installed on the bottom of the push plate.

[0010] As a preferred technical solution of this utility model: the bottom of the second conical push rod is slidably fitted to the top of the first conical push rod; the outer wall of the push plate is slidably fitted to the inner wall of the box; the longitudinal guide rod, the top rod, and the second spring are considered as a set of movable components, and there are four sets of such movable components, which are arranged in a rectangular array in the inner cavity of the box; the outer walls of the four top rods are through-connected to the inner wall of the push plate; the four second springs are located at the top of the push plate, with one end overlapping the top of the push plate and the other end overlapping the inner wall of the box; the outer walls of the four top rods are through-connected to the inner wall of the lower pressure film; there are two slots, and both slots are located on both sides of the outer wall of the box; the outer wall of the first conical push rod is adapted to the shape of the inner wall of the two slots.

[0011] Compared with the prior art, the present invention has the following beneficial effects: 1. This embossing equipment for basketball production utilizes a connecting component with four sets of circularly arrayed movable components: square slots, circular slots, convex inserts, a first spring, a steel wire rope, and pulleys corresponding to the first slot. Combined with the 90-degree turning transmission of the steel wire rope and the elastic return of the first spring, it enables rapid assembly and disassembly of the upper pressure film. This allows for replacement of the upper pressure film without the need for specialized tools, thus shortening the replacement time and facilitating flexible production of basketballs of various sizes.

[0012] 2. This embossing equipment for basketball production utilizes the sliding cooperation between the first and second conical push rods to convert the lateral movement of the box into the longitudinal ejection action of the push rod. After embossing is completed, the workpiece can be automatically ejected to the pick-up and drop-off height, thereby eliminating the manual picking process and effectively improving the production efficiency of the equipment. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the other side of the structure of this utility model; Figure 3 This is a schematic diagram of the connecting component structure of this utility model; Figure 4 This is a schematic diagram of the limiting structure of this utility model; Figure 5 This is a schematic diagram of the ejection structure of this utility model; Figure 6 This utility model Figure 3 Enlarged structural diagram at point A in the middle.

[0014] In the diagram: 1. Base of the machine body; 2. Support frame; 3. Top cover; 4. First cylinder; 5. Auxiliary pressure rod; 6. Demolding template; 7. Upper pressure film; 8. Positioning rod; 9. Connecting assembly; 10. Horizontal guide rod one; 11. Box body; 12. Lower pressure film; 13. Second cylinder; 14. Horizontal guide rod two; 15. Ejection assembly; 901. Mounting column; 902. First slot; 903. Square slot; 904. Circular slot; 905. Convex insertion rod; 906. First spring; 907. Steel wire rope; 908. Pulley; 909. Pulling cylinder; 910. Limiting rod; 911. Second slot; 151. First conical push rod; 152. Longitudinal guide rod; 153. Push plate; 154. Top rod; 155. Second spring; 156. Groove; 157. Second conical push rod; 16. Positioning groove. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figure 1 - Figure 6 An embossing device for basketball production includes a base 1. A support frame 2, a first transverse guide rod 10, a second transverse guide rod 14, and a second cylinder 13 are fixedly mounted on the top of the base 1. A top cover 3 is provided on the top of the support frame 2. An auxiliary pressure rod 5 is provided on the inner wall of the top cover 3. A first cylinder 4 is fixedly mounted on the top of the top cover 3. A demolding template 6 is provided at the telescopic end of the first cylinder 4. An upper pressing film 7 is provided at the bottom of the demolding template 6. A positioning rod 8 is provided at the bottom of the upper pressing film 7. A connecting assembly 9 is provided in the inner cavity of the upper pressing film 7. A box 11 is provided on the top of the base 1. A lower pressing film 12 is provided on the top of the box 11. The inner wall of the 2 is provided with a positioning groove 16, the inner cavity of the box body 11 is provided with an ejection assembly 15, the connecting assembly 9 includes an installation column 901 fixedly installed on the top of the upper pressure film 7, the outer wall of the installation column 901 is provided with a first slot 902, the inner cavity of the demolding template 6 is provided with a square groove 903, a circular groove 904 and a second slot 911, the inner cavity of the circular groove 904 is provided with a convex insertion rod 905 and a first spring 906, the inner wall of the square groove 903 is rotatably connected with a pulley 908, the outer wall of the convex insertion rod 905 is provided with a steel wire rope 907, the top of the demolding template 6 is fixedly installed with a limit rod 910, and the top of the demolding template 6 is provided with a pull cylinder 909; In the above structure, the connecting component 9 achieves the initial positioning of the upper pressure film 7 and the release template 6, and the elastic pushing force of the first spring 906 on the convex insertion rod 905 causes the convex insertion rod 905 to be inserted into the first slot 902 to complete the stable replacement connection between the two. At the same time, the pulley 908 changes the force direction of the wire rope 907, so that it works with the limiting rod 910 to guide the pull cylinder 909. By pulling the pull cylinder 909, the convex insertion rod 905 can be driven to compress the first spring 906 and disengage from the first slot 902, thereby realizing the quick installation and removal of the upper pressure film 7, thus meeting the replacement needs of different embossed upper pressure films 7.

[0017] In a preferred embodiment: the square groove 903, the circular groove 904, the convex insert rod 905, the first spring 906, the wire rope 907 and the pulley 908 are regarded as a set of movable components, and there are four sets of such movable components, which are arranged in a circular array. There are four first slots 902, which are arranged in a circular array on the outer wall of the mounting post 901. There are four limiting rods 910, which are arranged in a circular array and penetrate the inner wall of the pull tube 909. In the above structure, the four sets of movable components arranged in a circular array—square groove 903, circular groove 904, convex insert rod 905, first spring 906, wire rope 907, and pulley 908—correspond to the four first slots 902. This, combined with the guide of the pull cylinder 909 by the limiting rod 910, enables the rapid connection and positioning between the upper pressure film 7 and the release template 6. This facilitates the replacement of the upper pressure film 7 according to different embossing requirements.

[0018] In a preferred embodiment: the outer wall of one side of the four convex inserts 905 is adapted to the shape of the inner wall of the four first slots 902, and the outer wall of the other side of the four convex inserts 905 is slidably fitted to the inner wall of the four circular grooves 904. The four first springs 906 are located on one side of the four convex inserts 905, with one end overlapping the outer wall of the four first springs 906 and the other end overlapping the inner wall of the four circular grooves 904. One end of the four steel wire ropes 907 is connected and fixed to one side of the outer wall of the four convex inserts 905, and the other end is connected and fixed to the outer wall of the pull tube 909. The outer wall of the four steel wire ropes 907 is at a ninety-degree angle to the outer edge of the four pulleys 908. The outer wall of the mounting post 901 is adapted to the shape of the inner wall of the second slot 911. In the above structure, by pulling the pull cylinder 909 and sliding it upwards along the four limiting rods 910 penetrating the inner wall, the pull cylinder 909 will simultaneously pull one end of the four steel wire ropes 907 to extend. At the same time, the four steel wire ropes 907 will extend along the outer wall of the four pulleys 908, and the other end of the four steel wire ropes 907 will simultaneously drive one side of the four convex insert rods 905 to slide along the inner wall of the four circular grooves 904. This causes the four first springs 906 on one side of the four convex insert rods 905 to be compressed under their sliding. At this time, the other side of the four convex insert rods 905 will exit the inner wall of the four corresponding first slots 902, so that the mounting post 901 will... Withdraw the tube from the inner cavity of the second slot 911, then loosen the pull tube 909 so that one end of the four steel wire ropes 907 returns to its initial state from the pulled state. At this time, the four convex insertion rods 905 will rebound and reset using the four compressed first springs 906. Then, by pulling the upper pressure film 7 downward, the mounting post 901 will be withdrawn from the inner cavity of the second slot 911, thus completing the disassembly before replacing the upper pressure film 7. Next, when installing after replacement, align the mounting post 901 with the inner wall of the second slot 911, and then repeat the above operation so that the four convex insertion rods 905 will be inserted into the inner wall of the corresponding first slot 902, thus completing the installation after replacing the upper pressure film 7.

[0019] In a preferred embodiment: the bottom of the box body 11 is adapted to the shape of the outer wall of the transverse guide rod 10, the outer wall of the positioning rod 8 is adapted to the shape of the inner wall of the positioning groove 16, and the number of auxiliary pressure rods 5 is four, which are distributed in a rectangular array on the top of the template 6. In the above structure, by activating the first cylinder 4, the telescopic end of the first cylinder 4 will drive the demolding template 6 and the upper pressing film 7 installed at the bottom of the demolding template 6 to move closer to the top of the lower pressing film 12. At this time, the telescopic ends of the four auxiliary pressing rods 5 arranged in a rectangular array on the inner wall of the top cover 3 will also push them closer to the lower pressing film 12, so that the demolding template 6 and the upper pressing film 7 will be subjected to more uniform force when embossing the basketball on the top of the lower pressing film 12. Secondly, when the upper pressing film 7 approaches the lower pressing film 12, the four positioning rods 8 set at the bottom of the upper pressing film 7 will be inserted into the inner wall of the four positioning grooves 16 opened at the top of the lower pressing film 12, so as to facilitate heating and shaping during subsequent embossing.

[0020] In a preferred embodiment: the ejection assembly 15 includes a first tapered push rod 151 fixedly installed on the top of the transverse guide rod 14, a longitudinal guide rod 152 fixedly installed on the inner wall of the box body 11, a push plate 153 provided on the top of the longitudinal guide rod 152, a push rod 154 fixedly installed on the top of the push plate 153, a second spring 155 provided in the inner cavity of the box body 11, a slot 156 opened on the outer wall of the box body 11, and a second tapered push rod 157 fixedly installed on the bottom of the push plate 153; In a preferred embodiment: the bottom of the second conical push rod 157 is slidably fitted to the top of the first conical push rod 151; the outer wall of the push plate 153 is slidably fitted to the inner wall of the box 11; the longitudinal guide rod 152, the top rod 154, and the second spring 155 are considered as a set of movable components, and there are four sets of such movable components, which are arranged in a rectangular array in the inner cavity of the box 11; the outer walls of the four top rods 154 are connected to the inner wall of the push plate 153; the four second springs 155 are located at the top of the push plate 153, with one end overlapping the top of the push plate 153 and the other end overlapping the inner wall of the box 11; the outer walls of the four top rods 154 are connected to the inner wall of the lower pressure film 12; there are two slots 156, and both slots 156 are located on both sides of the outer wall of the box 11; the outer wall of the first conical push rod 151 is adapted to the shape of the inner wall of the two slots 156. In the above structure, after the top of the pressing film 12 is embossed on the basketball, when the box body 11 slides under the push of the second cylinder 13, the outer wall of the first conical push rod 151 will first slide against the inner wall of the slot 156 on one side of the box body 11. At this time, the top of the first conical push rod 151 will contact the bottom of the second conical push rod 157, and then the second conical push rod 157 will slide along the bottom of the first conical push rod 151 under the sliding of the box body 11. When the second conical push rod 157 slides, it will be squeezed by the first conical push rod 151, and the second conical push rod 157 will simultaneously drive the push plate 153 to slide upward along the inner wall of the box body 11. When the push plate 153 slides, its inner wall will simultaneously slide against the four longitudinal guide rods 152 that pass through the inner wall of the push plate 153, thereby fixing the sliding position of the push plate 153. At this time, the push plate 153 During sliding, the four second springs 155 at the top are compressed simultaneously. Then, when the first conical push rod 151 contacts the inner wall of the slot 156 on the other side of the box 11, the second conical push rod 157 drives the push plate 153 to slide upward to its maximum value. This causes the four top rods 154 fixed to the top of the push plate 153 to simultaneously pass through the inner wall of the lower pressure film 12 and push out the embossed basketball from the top of the lower pressure film 12. The worker can then remove the embossed basketball. At this time, the second cylinder 13 drives the box 11 to return along the direction of the transverse guide rod 10, causing the second conical push rod 157 to slide in the opposite direction along the top of the first conical push rod 151. As the second conical push rod 157 gradually disengages from the top of the first conical push rod 151, the push plate 153 will be reset by the rebound of the four second springs 155, and at the same time, it will drive the four top rods 154 to reset, thus facilitating the next ejection.

[0021] Working principle: First, the first cylinder 4 is activated, and its telescopic end pushes the release template 6 and the upper pressure film 7 downward. During this process, the four positioning rods 8 at the bottom of the upper pressure film 7 are inserted into the positioning grooves 16 of the lower pressure film 12, thereby calibrating the pressing position. At the same time, the four sets of auxiliary pressure rods 5 on the inner wall of the top cover 3 extend synchronously, keeping the release template 6 horizontally stressed and ensuring that the upper pressure film 7 and the lower pressure film 12 are parallel and in contact. The first cylinder 4 continuously applies pressure, and the upper pressure film 7 and the lower pressure film 12 close to emboss the basketball blank. The auxiliary pressure rods 5 compensate for the pressure through even distribution, avoiding deformation of the pattern caused by uneven local stress. After embossing is completed, the first cylinder 4 drives the release template 6 and the upper pressure film 7 to rise and reset. The positioning rods 8 disengage from the positioning grooves 16, and the auxiliary pressure rods 5 retract synchronously. At this time, the second cylinder 13 pushes the box body 11 along the transverse guide rod 10 towards the first... A conical push rod 151 slides in the direction of the first conical push rod 151, so that the slots 156 on both sides of the box body 11 slide against the outer wall of the first conical push rod 151. At this time, the top of the first conical push rod 151 presses against the second conical push rod 157. At the same time, the second conical push rod 157 will drive the push plate 153 to slide upward along the longitudinal guide rod 152 and compress the second spring 155. Then, the four sets of push rods 154 at the top of the push plate 153 penetrate through the inner wall of the lower pressure film 12, pushing the embossed basketball out to a height that is easy to pick up and put down. The operator takes off the pushed basketball, and the second cylinder 13 drives the box body 11 to slide back along the transverse guide rod 10 to reset, so that the second conical push rod 157 is freed from the pressure of the first conical push rod 151, and the push plate 153 is reset under the rebound action of the second spring 155, so that the four push rods 154 retract into the inner wall of the lower pressure film 12 with the push plate 153. Secondly, if the upper pressure film 7 needs to be replaced to adapt to different texture requirements, the pull cylinder 909 is pulled and slid upward along the four limiting rods 910 penetrating the inner wall. This causes the pull cylinder 909 to simultaneously pull one end of the four steel wire ropes 907, extending them. At the same time, the four steel wire ropes 907 extend along the outer wall of the four pulleys 908, causing the other end of the four steel wire ropes 907 to simultaneously drive one side of the four convex insert rods 905 to slide along the inner wall of the four circular grooves 904. This causes the four first springs 906 on one side of the four convex insert rods 905 to compress under their sliding motion. At this time, the other side of the four convex insert rods 905 will exit from the inner wall of the four corresponding first slots 902, making... The mounting post 901 will exit the inner cavity of the second slot 911. Then, the pull tube 909 will be released, allowing one end of the four steel wire ropes 907 to return to its initial state from the stretched state. At this time, the four convex insertion rods 905 will rebound and reset using the four compressed first springs 906. Then, by pulling the upper pressure film 7 downward, the mounting post 901 will exit the inner cavity of the second slot 911, thus completing the disassembly before replacing the upper pressure film 7. Next, when installing after replacement, align the mounting post 901 with the inner wall of the second slot 911, and then repeat the above operation so that the four convex insertion rods 905 will be inserted into the inner wall of the corresponding first slot 902, thus completing the installation after replacing the upper pressure film 7.

[0022] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An embossing device for basketball production, comprising a machine base (1), characterized in that: The top of the machine base (1) is fixedly installed with a support frame (2), a horizontal guide rod one (10), a horizontal guide rod two (14), and a second cylinder (13). The top of the support frame (2) is provided with a top cover (3). The inner wall of the top cover (3) is provided with an auxiliary pressure rod (5). The top of the top cover (3) is fixedly installed with a first cylinder (4). The telescopic end of the first cylinder (4) is provided with a demolding template (6). The bottom of the demolding template (6) is provided with an upper pressure film (7). The bottom of the upper pressure film (7) is provided with a positioning rod (8). The inner cavity of the upper pressure film (7) is provided with a connecting component (9). The top of the machine base (1) is provided with a box body (11). The top of the box body (11) is provided with a lower pressure film (12). The inner wall of the lower pressure film (12) is provided with a fixed... The inner cavity of the box body (11) is provided with an ejector assembly (15), the connecting assembly (9) includes an installation column (901) fixedly installed on the top of the upper pressure film (7), the outer wall of the installation column (901) is provided with a first slot (902), the inner cavity of the demolding template (6) is provided with a square slot (903), a circular slot (904) and a second slot (911), the inner cavity of the circular slot (904) is provided with a convex insert rod (905) and a first spring (906), the inner wall of the square slot (903) is rotatably connected with a pulley (908), the outer wall of the convex insert rod (905) is provided with a wire rope (907), the top of the demolding template (6) is fixedly installed with a limit rod (910), and the top of the demolding template (6) is provided with a pull cylinder (909).

2. The embossing equipment for basketball production according to claim 1, characterized in that: The square groove (903), circular groove (904), convex insert (905), first spring (906), wire rope (907) and pulley (908) are considered as a set of movable components, and there are four sets of such movable components, which are arranged in a circular array. There are four first slots (902), and the four first slots (902) are arranged in a circular array on the outer wall of the mounting column (901). There are four limiting rods (910), and the four limiting rods (910) are arranged in a circular array and penetrate the inner wall of the pull tube (909).

3. The embossing equipment for basketball production according to claim 1, characterized in that: The outer wall of one side of the four convex inserts (905) is adapted to the shape of the inner wall of the four first slots (902), and the outer wall of the other side of the four convex inserts (905) is slidably fitted to the inner wall of the four circular grooves (904). The four first springs (906) are located on one side of the four convex inserts (905), with one end overlapping the outer wall of the four first springs (906) and the other side overlapping the inner wall of the four circular grooves (904). One end of the four wire ropes (907) is connected and fixed to one side of the outer wall of the four convex inserts (905), and the other end is connected and fixed to the outer wall of the pull tube (909). The outer wall of the four wire ropes (907) is at a ninety-degree angle to the outer edge of the four pulleys (908). The outer wall of the mounting post (901) is adapted to the shape of the inner wall of the second slot (911).

4. The embossing equipment for basketball production according to claim 1, characterized in that: The bottom of the box (11) is adapted to the shape of the outer wall of the horizontal guide rod (10), the outer wall of the positioning rod (8) is adapted to the shape of the inner wall of the positioning groove (16), and the number of auxiliary pressure rods (5) is four, which are arranged in a rectangular array on the top of the template (6).

5. The embossing equipment for basketball production according to claim 1, characterized in that: The ejection assembly (15) includes a first conical push rod (151) fixedly installed on the top of the second transverse guide rod (14), a longitudinal guide rod (152) fixedly installed on the inner wall of the box (11), a push plate (153) provided on the top of the longitudinal guide rod (152), a push rod (154) fixedly installed on the top of the push plate (153), a second spring (155) provided in the inner cavity of the box (11), a slot (156) opened on the outer wall of the box (11), and a second conical push rod (157) fixedly installed on the bottom of the push plate (153).

6. The embossing equipment for basketball production according to claim 5, characterized in that: The bottom of the second conical push rod (157) is slidably fitted against the top of the first conical push rod (151). The outer wall of the push plate (153) is slidably fitted against the inner wall of the box (11). The longitudinal guide rod (152), the top rod (154), and the second spring (155) are considered as a set of movable components, and there are four sets of such movable components, which are arranged in a rectangular array in the inner cavity of the box (11). The outer walls of the four top rods (154) are through-fitted with the inner wall of the push plate (153). The second spring (155) is located at the top of the push plate (153), with one end overlapping the top of the push plate (153) and the other end overlapping the inner wall of the box body (11). The outer walls of the four push rods (154) are connected to the inner wall of the lower pressure film (12). There are two slots (156), and both slots (156) are located on both sides of the outer wall of the box body (11). The outer wall of the first tapered push rod (151) is adapted to the shape of the inner wall of the two slots (156).

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