A tray mechanism capable of being quickly installed and removed

Abstract

The present invention discloses a tray mechanism that can be quickly installed and removed, which relates to the field of labeling machines, and includes a tray, and is characterized in that it also includes a turntable, on which the tray can be sleeved, one end of the turntable is provided with a shaft shoulder, and the other end of the turntable is provided with at least one locking pin, which can automatically extend to the outside of the turntable, or retract into the inside of the turntable under the action of an external force; when the at least one locking pin extends to the outside of the turntable, the at least one locking pin provides the tray with a force directed to the one end of the turntable, so as to press the tray against the shaft shoulder. The tray mechanism of the present invention can quickly install and remove the tray.

Description

Technical Field

[0001] The present invention relates to the field of strip sticking machines, and more particularly to a tray mechanism that can be quickly installed and disassembled. Background Art

[0002] The strip sticking machine includes a rotatable material tray, on which a strip of material is wound. The material head that pulls the strip of material can drive the material tray to rotate, so that the wound strip of material can be unfolded, and the unfolded strip of material can be attached to the target object in cooperation with the corresponding conveying mechanism and the strip sticking mechanism. In order to improve work efficiency, multiple strip sticking machines are usually set to run synchronously for strip sticking. At present, multiple material trays are arranged in series on one shaft. When replacing one of the material trays, the previous material trays need to be disassembled and installed, which makes the replacement of the material tray complicated and difficult. In addition, the fixing and loosening of the material tray on the rotating shaft are relatively complicated, which is not conducive to the rapid installation and removal of the material tray. Summary of the invention

[0003] The purpose of the present invention is to remedy the defects of the prior art and provide a tray mechanism that can be quickly installed and disassembled, so that the tray can be quickly installed and disassembled.

[0004] The technical solution of the present invention is as follows: A material tray mechanism that can be quickly installed and disassembled, includes a material tray, and is characterized in that it also includes a turntable, the material tray can be sleeved on the turntable, one end of the turntable is provided with a shaft shoulder, and the other end of the turntable is provided with at least one locking pin, the at least one locking pin can automatically extend to the outside of the turntable, or retract into the inside of the turntable under the action of external force; when the at least one locking pin is extended to the outside of the turntable, the at least one locking pin provides the material tray with a force directed to the one end of the turntable to press the material tray against the shaft shoulder.

[0005] Furthermore, a slide groove connected to the other end of the turntable is provided in the turntable, and also includes a lock core that can slide along the slide groove; when no external force acts on the lock core, the lock core applies an outward thrust to the at least one lock pin so that the at least one lock pin extends to the outside of the turntable; applying external force to the lock core can make the lock core slide along the slide groove, the outward thrust applied by the lock core to the at least one lock pin disappears, and the at least one lock pin retracts into the inside of the turntable.

[0006] Furthermore, the lock core is connected to a first elastic member, and the at least one lock pin is connected to a second elastic member; when no external force acts on the lock core, the restoring force of the first elastic member acts on the lock core so that the lock core applies the outward thrust to the at least one lock pin, and the outward thrust overcomes the inward thrust applied to the at least one lock pin by the restoring force of the second elastic member, so that the at least one lock pin extends to the outside of the turntable; when an external force is applied to the lock core, when the external force applied to the lock core overcomes the restoring force of the first elastic member, the lock core slides along the slide groove, the outward thrust applied by the lock core to the at least one lock pin disappears, and the restoring force of the second elastic member applies an inward thrust to the at least one lock pin, so that the at least one lock pin retracts into the inside of the turntable.

[0007] Furthermore, a cavity is provided inside the turntable, the slide groove is located in the cavity, the slide groove is coaxially arranged with the turntable, the lock core includes a first conical section located in the slide groove, the first conical section is coaxially arranged with the turntable, the first conical section gradually expands from one end away from the bottom of the slide groove toward the other end close to the bottom of the slide groove, the at least one locking pin is arranged along the radial direction of the turntable, one end of the at least one locking pin abuts against the first conical section, and the other end of the at least one locking pin can extend to the outside of the turntable or retract into the turntable. Inside the disk, the first elastic member is a first compression spring, which is coaxially arranged with the turntable, one end of the first compression spring abuts against the bottom of the slide groove, and the other end of the first compression spring abuts against an end of the lock core close to the bottom of the slide groove, the second elastic member is a second compression spring, which is coaxially arranged with the at least one lock pin, and a plate body perpendicular to the at least one lock pin is provided in the middle of the cavity, one end of the second compression spring abuts against the wall of the cavity, and the other end of the second compression spring abuts against the plate body.

[0008] Furthermore, a groove body coaxially arranged with the rotating disk is formed at one end of the lock core close to the bottom of the sliding groove, and the other end of the first compression spring abuts against the bottom of the groove body.

[0009] Furthermore, the lock core also includes a first cylindrical section and a second cylindrical section, the first cylindrical section, the first conical section and the second cylindrical section are coaxially arranged, one end of the first cylindrical section is located inside the turntable and connected to an end of the first conical section away from the bottom of the slide groove, and the other end of the first cylindrical section extends out of the turntable, and also includes a pressure plate arranged vertically with the first cylindrical section, the pressure plate is fixedly connected to the other end of the first cylindrical section, the second cylindrical section is connected to the other end of the first conical section close to the bottom of the slide groove, and the second cylindrical section is gap-matched with the side wall of the slide groove.

[0010] Furthermore, the number of the at least one locking pin is 4, one end of the at least one locking pin is a spherical surface, and the other end of the at least one locking pin is a conical surface that tapers outwards.

[0011] Furthermore, the turntable includes a third cylindrical section, a second conical section and a fourth cylindrical section which are sequentially connected and coaxially arranged from the other end to one end thereof, the diameter of the third cylindrical section is smaller than the diameter of the fourth cylindrical section, the material tray can be sleeved on the second conical section and the fourth cylindrical section, and the material tray is gap-fitted with the fourth cylindrical section.

[0012] Furthermore, a circle of material containing grooves is formed on the circumferential outer wall of the material tray.

[0013] Furthermore, it also includes a shaft body coaxially arranged with the turntable, and a fixed plate arranged perpendicular to the shaft body, one end of the turntable is rotatably mounted on the shaft body through a bearing, and the fixed plate is mounted on the part of the shaft body located outside the turntable and is fixedly connected to the shaft body.

[0014] The beneficial effects of the present invention are: the feed tray mechanism applies external force to retract at least one locking pin into the inside of the turntable, and the locking pin cannot provide the feed tray with a force to press on the turntable, and the feed tray is loosely connected to the turntable, which facilitates the removal of the feed tray from the turntable; when the feed tray is sleeved on the turntable, the external force applied by the feed tray mechanism is removed, and under the action of the structure of the feed tray mechanism itself, at least one locking pin automatically extends to the outside of the turntable, and the feed tray provides a force to press the feed tray against the shaft shoulder, thereby fixing the feed tray on the turntable, and the feed tray is easy to install, so the feed tray mechanism can quickly install and remove the feed tray. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solution of the present invention, the accompanying drawings required for use in the description of the invention are briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0016] Figure 1 It is an assembly diagram of a tray mechanism that can be quickly installed and disassembled according to an embodiment of the present invention.

[0017] Figure 2 It is a schematic structural diagram of a material tray according to an embodiment of the present invention.

[0018] Figure 3 Schematic diagram of the structure of a turntable according to an embodiment of the present invention.

[0019] Figure 4 for Figure 1 Enlarged view of point A in the middle.

[0020] Figure 5 for Figure 1 Enlarged view of point B in the middle.

[0021] Among them, 1-material tray; 2-turntable; 3-shaft shoulder; 4-shaft body; 5-fixed plate; 6-lock pin; 7-second compression spring; 8-slide groove; 9-lock core; 10-pressure plate; 11-first compression spring; 12-material trough; 13-third cylindrical section; 14-second conical section; 15-fourth cylindrical section; 16-cavity; 17-first through hole; 18-second through hole; 19-large aperture section; 20-small aperture section; 21-third through hole; 22-first cylindrical section; 23-first conical section; 24-second cylindrical section; 25-trough body; 26-fourth through hole; 27-plate body; 28-bearing; 29-spacer. DETAILED DESCRIPTION

[0022] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0023] Figure 1 FIG. 1 is an assembly diagram of a tray mechanism that can be quickly installed and removed according to an embodiment of the present invention. Figure 1 As shown, it includes a material tray 1 and a turntable 2, the material tray 1 is sleeved on the turntable 2, one end of the turntable 2 is provided with a shoulder 3, the shoulder 3 protrudes from the outer peripheral surface of the turntable 2, the middle part of one end of the turntable 2 is also connected to a shaft body 4 and a fixing plate 5, the other end of the turntable is provided with four locking pins 6, a second compression spring 7 sleeved on each locking pin 6, a slide groove 8, a lock core 9, a pressure plate 10 and a first compression spring 11.

[0024] Figure 2 Schematic diagram of the structure of the material tray 1 according to an embodiment of the present invention, as shown in Figure 2 As shown, the middle part of the tray 1 is provided with a mounting through hole that passes through the tray 1 along the axis of the tray 1. Figure 1 The material tray 1 is sleeved on the turntable 2 through the mounting through hole, and the end surface of one end of the material tray 1 can abut against the shaft shoulder 3 of the turntable 2. A material receiving groove 12 is formed on the circumferential outer wall of the material tray 1, and the rolled strip material can be arranged in the material receiving groove 12, and the material receiving groove 12 plays the role of accommodating and positioning the rolled strip material.

[0025] Figure 3 FIG. 2 is a schematic diagram of the structure of the turntable 2 according to an embodiment of the present invention. Figure 3As shown, the turntable 2 includes a third cylindrical section 13, a second conical section 14 and a fourth cylindrical section 15 which are sequentially connected and coaxially arranged from the other end to the one end thereof, the diameter of the third cylindrical section 13 is smaller than the diameter of the fourth cylindrical section 15, the shaft shoulder 3 is arranged at the outer end of the fourth cylindrical section 15, and only one material tray 1 is sleeved on the turntable 2, and the material tray 1 can be sleeved on the second conical section 14 and the fourth cylindrical section 15, and the mounting through hole of the material tray 1 is clearance-matched with the fourth cylindrical section 15. By setting the other end of the turntable 2 to include the third cylindrical section 13 with a smaller outer diameter and the second conical section 14, it is convenient to sleeve the material tray 1 on the turntable 2.

[0026] like Figure 3 As shown, a cavity 16 is provided inside the rotating disk 2, and four radial first through holes 17 are provided on the outer peripheral wall of the other end of the rotating disk 2. The first through holes 17 communicate the cavity 16 with the outside of the rotating disk 2, and the first through holes 17 are clearance-matched with the locking pin 6. The outer end of the locking pin 6 can slide out from the first through hole 17 to extend to the outside of the rotating disk 2, and the outer end of the locking pin 6 can also slide into the first through hole 17 to retract into the inside of the rotating disk 2. Preferably, the four radial first through holes 17 are evenly distributed on the outer peripheral wall of the rotating disk 2.

[0027] like Figure 3 As shown, a second through hole 18 coaxial with the turntable 2 is provided on the wall at one end of the turntable 2. The second through hole 18 connects the cavity with the outside of the turntable, including a large-diameter hole section 19 on the inside and a small-diameter hole section 20 on the outside. The large-diameter hole section 19 is convenient for setting and positioning the bearing. A third through hole 21 coaxial with the turntable 2 is provided on the wall at the other end of the turntable 2, so that the lock core 9 can pass through the third through hole 21.

[0028] Figure 4 for Figure 1 The enlarged view of A in the middle is as follows: Figure 4As shown, the slide groove 8 is formed by a circular cylinder located in the cavity 16, the circular cylinder is coaxially arranged with the rotary disk 2, and the open end of the circular cylinder is connected to the inner wall surface of the other end of the rotary disk 2. The lock core 9 includes a first cylindrical section 22, a first conical section 23 and a second cylindrical section 24 which are connected in sequence. The first cylindrical section 22, the first conical section 23 and the second cylindrical section 24 are coaxially arranged. The first conical section 23 and the second cylindrical section 24 are located in the slide groove 8. The diameter of the first cylindrical section 22 is smaller than the diameter of the second cylindrical section 24. The first conical section 23 gradually expands from one end away from the bottom of the slide groove 8 to the other end close to the bottom of the slide groove 8. One end of the first cylindrical section 22 is located inside the slide groove 8 and is connected to one end of the first conical section 23 away from the bottom of the slide groove 8. The column section 22 is in clearance with the third through hole 21 provided on the wall at the other end of the rotating disk 2, the middle part of the first cylindrical section 22 passes through the third through hole 21 provided on the wall at the other end of the rotating disk 2, the other end of the first cylindrical section 22 extends out of the rotating disk 2, the pressing plate 10 is arranged vertically with the first cylindrical section 22, the pressing plate 10 is fixedly connected with the other end of the first cylindrical section 22 by screws, the second cylindrical section 24 is connected with the other end of the first conical section 23 near the bottom of the slide groove 8, the second cylindrical section 24 is in clearance with the side wall of the slide groove 8 so that the lock core 9 can slide along the slide groove 8. A groove body 25 arranged coaxially with the rotating disk 2 is provided at one end of the lock core 9 near the bottom of the slide groove 8, the first compression spring 11 is arranged coaxially with the rotating disk 2, one end of the first compression spring 11 abuts against the bottom of the slide groove 8, and the other end of the first compression spring 11 abuts against the bottom of the groove body 25. The outer wall of the slide groove 8 is provided with four radial fourth through holes 26 that cooperate with the four first through holes 17 provided on the outer wall of the turntable 2. The locking pin 6 is clearance-matched with the fourth through holes 26 on the outer wall of the slide groove. The inner part of the locking pin 6 is penetrated by the fourth through holes 26 on the outer wall of the slide groove 8, and the outer part of the locking pin 6 is penetrated by the first through holes 17 on the outer wall of the turntable 2. One end of the locking pin 6 is a spherical surface, and one end of the locking pin 6 abuts on the conical surface of the first conical section 23. The other end of the locking pin 6 is a conical surface that tapers outward, and the conical surface is used to abut against the other end of the material tray 1. The conical surface setting can provide pressure to the material tray 1 directed to the shoulder 3 when the locking pin 6 extends out of the turntable 2. The locking pin 6 is located in the middle of the cavity 16 and is provided with a plate body 27 perpendicular to the locking pin 6. The second compression spring 7 is sleeved on the middle of the locking pin 6. The second compression spring 7 is coaxially arranged with the locking pin 6. One end of the second compression spring 7 abuts against the inner wall surface of the outer peripheral wall of the turntable 2, and the other end of the second compression spring 7 abuts against the plate body 27.

[0029] Figure 5 for Figure 1 The enlarged view of point B in the figure is as follows: Figure 5 As shown, the shaft body 4 is sleeved with a bearing 28, one end of the shaft body 4 is provided with a shaft shoulder, the shaft shoulder abuts against one end of the bearing 28, the shaft body 4 passes through the second through hole 18 at one end of the turntable 2 and extends into the cavity 16, the shaft body 4 is coaxially arranged with the turntable 2, and the shaft body 4 is combined with the turntable 2. Figure 3 , the bearing 28 is arranged in the large diameter hole section 19, and the other end of the bearing 28 abuts on the step surface between the large diameter section 19 and the small diameter section 20. The other end of the shaft body 4 includes a small diameter section, and the small diameter section is located outside the turntable 2. The fixing plate 5 is sleeved on the small diameter section, and the fixing plate 5 is pressed on the step surface between the small diameter section and the shaft body 4 by screws and gaskets, so that the fixing plate 5 is fixedly connected to the shaft body 4. A spacer sleeve 29 is sleeved in the middle of the shaft body 4, and most of the spacer sleeve 29 is located in the small diameter section 20. One end of the spacer sleeve 29 abuts against the fixing plate 5, and the other end of the spacer sleeve 29 abuts against the other end of the bearing 28. The fixing plate 5 can be fixedly connected to the mounting base, so that the material tray mechanism is fixedly mounted on the mounting base. At the same time, under the axial positioning effect of the shoulder of the shaft body 4, the step surface between the large-diameter section 19 and the small-diameter section 20, and the spacer sleeve 29 on the bearing 28, the turntable 2 can stably rotate around the shaft body 4.

[0030] The working principle of the above-mentioned tray mechanism that can be quickly installed and disassembled is as follows: when the tray 1 needs to be installed, the pressure plate 10 is pressed by external force, and the pressing force overcomes the restoring force of the first compression spring 11, and the lock core 9 slides along the slide groove 8 in the direction close to the bottom of the slide groove 8, and the first conical section 23 of the lock core 9 is disengaged from one end of the lock pin 6, and the radial outward thrust along the turntable applied by the lock core 9 to the at least one lock pin 6 disappears, and the restoring force of the second compression spring 7 applies a radial inward thrust along the turntable to the lock pin 6, so that the lock pin 6 retracts into the inside of the turntable 2, and then the tray 1 is sleeved from the third cylindrical section 13 and the second conical section 14 of the turntable 2 to the second conical section 14 and the fourth cylindrical section 15 of the turntable 2, and the end face of one end of the tray 1 is made to abut against the shaft shoulder 3 of the turntable 2; then the external force pressing the pressure plate 10 is removed, and the The restoring force of the first compression spring 11 applies an outward force to the lock core 9 along the axis of the turntable 2, so that the first conical section 23 of the lock core 9 applies a thrust radially outward along the turntable to the four lock pins 6. The thrust radially outward along the turntable overcomes the thrust radially inward along the turntable applied to the lock pin 6 by the restoring force of the second compression spring 7. The lock core 9 slides along the slide groove 8 in a direction away from the bottom of the slide groove 8, so that the lock pin 6 automatically extends to the outside of the turntable 2, and the conical surface of the other end of the lock pin 6 abuts against the other end of the material tray 1. The lock pin 6 provides the material tray 1 with a force directed to the one end of the turntable 2, which presses the material tray 1 against the shoulder 3 of the turntable 2, so that the material tray 1 is fixedly connected to the turntable 2, and the material tray 1 can rotate around the shaft body 4 together with the turntable 2 to complete the installation of the material tray 1. When the material tray 1 needs to be removed, the pressing plate 10 is pressed by external force, and the pressing force overcomes the restoring force of the first compression spring 11, and the lock core 9 slides along the slide groove 8 toward the bottom of the slide groove 8, and the first conical section 23 of the lock core 9 is separated from one end of the lock pin 6, and the radial outward thrust along the turntable applied by the lock core 9 to the at least one lock pin 6 disappears, and the restoring force of the second compression spring 7 applies a radial inward thrust along the turntable to the lock pin 6, so that the lock pin 6 retracts into the inside of the turntable 2, and then the material tray 1 is removed from the third cylindrical section 13 and the second conical section 14 of the turntable 2. The material tray mechanism can quickly install and remove the material tray.

[0031] In the above embodiment, the shaft 4, bearing 28 and fixing plate 5 provided at one end of the turntable 2 are used to enable the turntable 2 to be rotatably mounted on the mounting base. It should be understood that the turntable 2 can also be rotatably mounted on the mounting base in other ways, as long as the turntable 2 can be rotated around its axis on the mounting base. The implementation manner of the present invention is not limited to the above embodiment.

[0032] In the above embodiment, the first compression spring 11 is used to provide an outward restoring force to the lock core 9, and the second compression spring 7 is used to provide an inward restoring force to the lock pin 6. It should be understood that the first compression spring 11 and the second compression spring 7 are not limited to compression springs, but can also be tension springs. In this case, one end of the tension spring used to provide an outward restoring force to the lock core 9 is connected to the inner wall surface of the other end of the rotating disk 2, and the other end is connected to the lock core. The tension spring can also provide an outward restoring force to the lock core 9. One end of the tension spring used to provide an inward restoring force to the lock pin 6 is connected to the outer wall surface of the outer peripheral wall of the slide groove 8, and the other end is connected to the plate body 27 in the middle of the lock pin 6. The tension spring can also provide an inward restoring force to the lock pin 6. Further, the first compression spring 11 and the second compression spring 7 are not limited to springs, and can be other types of elastic elements. The embodiments of the present invention are not limited to the above embodiments.

[0033] In the above embodiment, the lock pin 6 can be retracted into the turntable 2 by pressing the lock core 9. It should be understood that the lock pin 6 can also be retracted into the turntable 2 by pulling the lock core 9. At this time, the first conical section 23 needs to be set to gradually shrink from one end away from the bottom of the slide groove 8 toward the other end close to the bottom of the slide groove 8, and the first compression spring 11 is set to be a tension spring. When the pulling force of pulling the lock pin 6 overcomes the tension of the tension spring, the lock core 9 slides outward, and the first conical section can also be detached from one end of the lock pin 6, so that the lock pin 6 can be retracted into the turntable 2. The implementation mode of the present invention is not limited to the above embodiment.

[0034] In the above embodiment, a cavity 16 for accommodating the slide groove 8 is opened in the turntable 2. It should be understood that the turntable 2 may also be provided with a cavity, and the slide groove may be directly provided on one end of the turntable 2. In this case, the middle part of the locking pin 6 is not located in the cavity 16, but is penetrated on the side wall of the turntable 2. One end of the second compression spring 7 may be abutted against the side wall of the slide groove, and the other end may be abutted against the plate body provided on the inner part of the locking pin 6. The implementation manner of the present invention is not limited to the above embodiment.

[0035] In the above embodiment, the second compression spring 7, the slide groove 8, the lock core 9, the pressure plate 10 and the first compression spring 11 which are directly or indirectly matched with the lock pin 6 are arranged at the other end of the turntable 2. Their function is to make the lock pin 6 automatically extend to the outside of the turntable 2, or retract into the inside of the turntable 2 under the action of external force, and when the lock pin 6 extends to the outside of the turntable 2, the lock pin 6 provides the material tray 1 with a force directed to one end of the turntable 2 so that the material tray 1 can be pressed against the shaft shoulder 3 of the turntable 2. It should be understood that the other end of the turntable 2 A mechanical or electric structure of other structure that acts on the locking pin 6 may also be provided, so that when there is no external force acting on the mechanical or electric structure, the locking pin 6 can automatically extend to the outside of the turntable 2, or the locking pin 6 can retract into the inside of the turntable 2 under the action of an external force, and when the locking pin 6 is extended to the outside of the turntable 2, the locking pin 6 provides a force to the material tray 1 directed to one end of the turntable 2 so that the material tray 1 can be pressed against the shoulder 3 of the turntable 2. The embodiments of the present invention are not limited to the above-mentioned embodiments.

[0036] In the description of the present invention, it should be noted that the terms "first", "second", "third" and "fourth" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0037] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A tray mechanism capable of rapid installation and removal, comprising a tray (1), characterized in that: It also comprises a turntable (2), the material tray (1) being sleeved on the turntable (2), one end of the turntable (2) being provided with a shaft shoulder (3), and the other end of the turntable (2) being provided with at least one locking pin (6), the at least one locking pin (6) being automatically extended to the outside of the turntable (2), or being retracted into the inside of the turntable (2) under the action of an external force; when the at least one locking pin (6) is extended to the outside of the turntable (2), the at least one locking pin (6) provides the material tray (1) with a force directed toward the one end of the turntable (2), so as to press the material tray (1) against the shaft shoulder (3); The rotating disk (2) is provided with a slide groove (8) connected to the other end of the rotating disk (2), and also includes a lock core (9) that can slide along the slide groove (8); the lock core (9) is connected to a first elastic member, and the at least one lock pin (6) is connected to a second elastic member; The rotating disk (2) is provided with a cavity (16) inside, the slide groove (8) is located in the cavity (16), the slide groove (8) is coaxially arranged with the rotating disk (2), the lock core (9) comprises a first conical section (23) located in the slide groove (8), the first conical section (23) is coaxially arranged with the rotating disk (2), the first conical section (23) gradually expands from one end thereof far from the bottom of the slide groove (8) toward the other end thereof close to the bottom of the slide groove (8), the at least one locking pin (6) is arranged along the radial direction of the rotating disk (2), one end of the at least one locking pin (6) abuts against the first conical section (23), and the other end of the at least one locking pin (6) can extend out of the rotating disk (2) or retract into the rotating disk (2). ), the first elastic member is a first compression spring (11), the first compression spring (11) is coaxially arranged with the turntable (2), one end of the first compression spring (11) abuts against the bottom of the slide groove (8), and the other end of the first compression spring (11) abuts against one end of the lock core (9) close to the bottom of the slide groove (8), the second elastic member is a second compression spring (7), the second compression spring (7) is coaxially arranged with the at least one lock pin (6), the at least one lock pin (6) is located in the middle of the cavity (16) and is provided with a plate body (27) perpendicular to the at least one lock pin (6), one end of the second compression spring (7) abuts against the wall of the cavity (16), and the other end of the second compression spring (7) abuts against the plate body (27); One end of the at least one locking pin (6) is a spherical surface, and the other end of the at least one locking pin (6) is a conical surface that tapers outwards; The rotating disk (2) comprises a third cylindrical section (13), a second conical section (14) and a fourth cylindrical section (15) which are sequentially connected and coaxially arranged from the other end to the one end thereof, the diameter of the third cylindrical section (13) being smaller than the diameter of the fourth cylindrical section (15), the material disk (1) being sleeved on the second conical section (14) and the fourth cylindrical section (15), and the material disk (1) and the fourth cylindrical section (15) being clearance-matched; When no external force acts on the lock core (9), the restoring force of the first elastic member acts on the lock core (9) so that the lock core (9) applies an outward thrust to the at least one lock pin (6), and the outward thrust overcomes the inward thrust applied to the at least one lock pin (6) by the restoring force of the second elastic member, so that the at least one lock pin (6) extends to the outside of the turntable (2); when an external force is applied to the lock core (9), when the external force applied to the lock core (9) overcomes the restoring force of the first elastic member, the lock core (9) slides along the slide groove (8), the outward thrust applied by the lock core (9) to the at least one lock pin (6) disappears, and the restoring force of the second elastic member applies an inward thrust to the at least one lock pin (6), so that the at least one lock pin (6) retracts into the inside of the turntable (2).

2. The tray mechanism according to claim 1, characterized in that: One end of the lock core (9) close to the bottom of the slide slot (8) is provided with a slot body (25) coaxially arranged with the rotating disk (2), and the other end of the first compression spring (11) abuts against the bottom of the slot body (25).

3. The tray mechanism according to claim 1, characterized in that: The lock core (9) further comprises a first cylindrical section (22) and a second cylindrical section (24), wherein the first cylindrical section (22), the first conical section (23) and the second cylindrical section (24) are coaxially arranged, one end of the first cylindrical section (22) is located inside the turntable (2) and is connected to an end of the first conical section (23) away from the bottom of the slide groove (8), and the other end of the first cylindrical section (22) extends out of the turntable (2), and further comprises a pressure plate (10) arranged perpendicular to the first cylindrical section (22), wherein the pressure plate (10) is fixedly connected to the other end of the first cylindrical section (22), the second cylindrical section (24) is connected to the other end of the first conical section (23) close to the bottom of the slide groove (8), and the second cylindrical section (24) is clearance-matched with the side wall of the slide groove (8).

4. The tray mechanism according to claim 1, characterized in that: The number of the at least one locking pin (6) is 4.

5. The tray mechanism according to claim 1, characterized in that: The material tray (1) has a circle of material containing grooves (12) on the circumferential outer wall.

6. The tray mechanism according to claim 1, characterized in that: It also comprises a shaft body (4) coaxially arranged with the rotating disk (2), and a fixing plate (5) arranged perpendicularly to the shaft body (4); one end of the rotating disk (2) is rotatably sleeved on the shaft body (4) via a bearing (28); the fixing plate (5) is sleeved on a portion of the shaft body (4) located outside the rotating disk (2) and is fixedly connected to the shaft body (4).

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