Cup cover ring flip mechanism and paper cup cover production equipment

Abstract

A cup cover ring flipping mechanism and a paper cup cover production device, comprising a flipping assembly and a cup pull assembly; the flipping assembly comprises a first fixed seat, a first swing arm, a first rotating disk, a first rotating shaft, a first transmission rod, a flipping shaft and a ring clamp; the cup pull assembly comprises a second rotating disk, a second rotating shaft, a second fixed seat, a second swing arm, a lifting seat, a cup pull cylinder, a cup pull block and a cup pull member, and the middle part of the second swing arm is rotatably connected to the second fixed seat. In this way, the cup cover ring can be transferred and flipped, which is convenient for the subsequent reception of the cup cover sheet and the assembly with the cup cover sheet. The present invention also includes a paper cup cover production device having the above-mentioned cup cover ring flipping mechanism.

Description

Technical Field

[0001] The invention relates to the technical field of environmentally friendly product manufacturing, in particular to a cup cover ring turning mechanism and paper cup cover production equipment. Background Art

[0002] Please refer to Figures 11 to 13 The applicant has designed a set of paper cup cover production equipment for producing a paper cup cover 100. The paper cup cover 100 includes a cup cover ring 110 and a cup cover sheet 120. The top of the cup cover ring 110 protrudes outward to form an extension portion 111, and the top of the extension portion 111 is wound outward to form a top winding portion 112. In order to achieve a tight connection between the cup cover ring 110 and the cup cover sheet 120, a bottom winding portion 113 is provided at the bottom of the cup cover ring 110, and a circumferential winding portion 121 is provided at the outer edge of the cup cover sheet 120. An adhesive film is provided on the circumferential winding portion 121 or the bottom winding portion 113, and the circumferential winding portion 121 is attached to the bottom winding portion 113 and pressed by a pressing device, so that the circumferential winding portion 121 and the bottom winding portion 113 are tightly connected through the adhesive film. The cup cover ring 110 is firstly formed on a cup cover ring forming device (the top winding portion 112 and the bottom winding portion 113 are not yet provided at this time). After the cup cover ring 110 is formed, its extension portion 111 is placed downward. At this time, the cup cover ring 110 needs to be transferred to a paper cup cover assembly device and the cup cover ring 110 needs to be flipped so as to facilitate the subsequent reception of the cup cover sheet 120 and assembly with the cup cover sheet 120. Summary of the invention

[0003] In view of this, the present invention provides a cup cover ring flipping mechanism and a paper cup cover production device capable of realizing cup cover ring transfer and flipping, so as to solve the above problems.

[0004] A cup cover ring flipping mechanism and paper cup cover production equipment, comprising a flipping assembly rotatably arranged at the side of a cup cover ring forming device and a cup pulling assembly arranged below a turntable; the flipping assembly comprises a first fixed seat, a first swing rod rotatably connected to the first fixed seat at a first end, a first rotating disk eccentrically connected to the middle of the first swing rod, a first rotating shaft passing through the center of the first rotating disk, a first transmission rod rotatably connected to the second end of the first swing rod at a bottom end, a flipping shaft rotatably connected to the top of the first transmission rod at one end and rotatably arranged at the side of the cup cover ring forming device, and an annular clamp fixedly connected to the flipping shaft; the cup pulling assembly comprises a second rotating disk, a second rotating shaft passing through the center of the second rotating disk, a second fixed seat arranged at one side of the second rotating disk, a second swing rod eccentrically connected to the second rotating disk at a first end, a lifting seat rotatably connected to the second end of the second swing rod, a cup pulling cylinder installed on the lifting seat, a cup pulling block arranged at the end of the output shaft of the cup pulling cylinder, and a cup pulling member fixed to the top of the lifting seat, and the middle part of the second swing rod is rotatably connected to the second fixed seat.

[0005] Furthermore, a first opening is provided in the middle of the annular clamp, and a plurality of elastic abutment blocks are protruded and provided at intervals on the inner side wall of the annular clamp.

[0006] Furthermore, the distance between the side of the elastic abutment block facing the center of the annular clamp and the center of the annular clamp gradually increases from one end close to the paper cup cover assembly device to one end close to the cup cover ring forming device, and an elastic element is connected between the elastic abutment block and the annular clamp.

[0007] Furthermore, the inner side surface of the elastic abutment block facing the center of the annular clamp is an inclined surface or an arc-shaped curved surface.

[0008] Furthermore, a first eccentric cam is arranged in the middle of one side of the first rotating disk, a first eccentric track groove is opened on the outer side of the first eccentric cam, a first guide column is protrudingly arranged in the middle of the first swing arm, and the first guide column is located in the first eccentric track groove.

[0009] Furthermore, the lifting seat has a bottom plate, a top plate and at least two first connecting columns connecting the bottom plate and the top plate; a first opening is opened on the top plate, a connecting ring is arranged at the first opening, the cup pulling cylinder is arranged between the bottom plate and the top plate, and the output shaft of the cup pulling cylinder passes through the first opening and the connecting ring of the top plate; the cup pulling part includes a bottom ring connected to the connecting ring, a plurality of elastic connecting parts connected to the top of the bottom ring and an action part connected to the top of the elastic connecting part, a guide inclined surface is arranged on the inner side of the top of the action part, and a buckle part is protrudingly arranged on the outer side of the top; the cup pulling block is in the shape of a truncated cone, and the circumferential side surface of the cup pulling block abuts against the guide inclined surface.

[0010] Furthermore, the cup pull assembly also includes a first sleeve which is arranged on the paper cup cover assembly device and sleeved on the first connecting column.

[0011] Furthermore, a second eccentric cam is arranged in the middle of one side of the second rotating disk, a second eccentric track groove is opened on the outer side of the second eccentric cam, a second guide column is protrudingly arranged on the first end of the second swing rod, and the second guide column is located in the second eccentric track groove.

[0012] A paper cup cover production device, comprising a cup cover sheet forming device and a paper cup cover assembly device; the paper cup cover assembly device comprises a workbench, a turntable rotatably arranged on the workbench, a cup cover ring turning mechanism as described above which is arranged on the workbench and located on the circumferential outer side of the turntable and distributed in a clockwise or counterclockwise direction, a cup cover ring bottom rolling and mouth rolling mechanism, a cup cover sheet lowering mechanism, a hot air blowing mechanism, a forming pre-pressing mechanism, an ultrasonic welding mechanism, and a wire rolling and material unloading mechanism.

[0013] Compared with the prior art, the cup cover ring flipping mechanism and paper cup cover production equipment of the present invention include a flipping assembly rotatably arranged at the side of the cup cover ring forming device and a cup pulling assembly arranged below the turntable; the flipping assembly includes a first fixed seat, a first swing rod rotatably connected to the first fixed seat at the first end, a first rotating disk eccentrically connected to the middle of the first swing rod, a first rotating shaft passing through the center of the first rotating disk, a first transmission rod rotatably connected to the second end of the first swing rod at the bottom end, a flipping shaft rotatably connected to the top of the first transmission rod at one end and rotatably arranged at the side of the cup cover ring forming device, and an annular clamp fixedly connected to the flipping shaft; the cup pulling assembly includes a second rotating disk, a second rotating shaft passing through the center of the second rotating disk, a second fixed seat arranged on one side of the second rotating disk, a second swing rod eccentrically connected to the second rotating disk at the first end, a lifting seat rotatably connected to the second end of the second swing rod, a cup pulling cylinder installed on the lifting seat, a cup pulling block arranged at the end of the output shaft of the cup pulling cylinder, and a cup pulling member fixed to the top of the lifting seat, and the middle part of the second swing rod is rotatably connected to the second fixed seat. In this way, the cup cover ring can be transferred and turned over, which is convenient for the subsequent reception of the cup cover sheet and assembly with the cup cover sheet. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The embodiments of the present invention are described below in conjunction with the accompanying drawings, wherein:

[0015] Figure 1 This is a three-dimensional schematic diagram of the paper cup cover production equipment provided by the present invention.

[0016] Figure 2 for Figure 1 An enlarged schematic diagram of part A in FIG.

[0017] Figure 3 for Figure 2 A three-dimensional schematic diagram of the cup cover ring flipping mechanism.

[0018] Figure 4 for Figure 3 A three-dimensional schematic diagram of the flip component in FIG.

[0019] Figure 5 for Figure 3 A three-dimensional schematic diagram of the pull cup assembly in FIG.

[0020] Figure 6 for Figure 5 Partial cross-sectional view along line BB.

[0021] Figure 7 for Figure 2 A three-dimensional schematic diagram of the wire rolling and feeding mechanism.

[0022] Figure 8 for Figure 7 A three-dimensional schematic diagram of the rolling wire and the unloading mechanism from the first perspective.

[0023] Fig. 9 for Figure 7 A three-dimensional schematic diagram of the rolling wire and the feeding mechanism from a second perspective.

[0024] Fig.10 for Figure 8 A three-dimensional schematic diagram of the material connection component in FIG.

[0025] Fig.11 This is a three-dimensional schematic diagram of a paper cup cover from a first-person perspective.

[0026] Fig.12 This is a three-dimensional schematic diagram of a paper cup cover from a second perspective.

[0027] Fig.13 Schematic diagram of the cross section of a paper cup lid. DETAILED DESCRIPTION

[0028] The specific embodiments of the present invention are further described in detail below based on the accompanying drawings. It should be understood that the description of the embodiments of the present invention herein is not intended to limit the protection scope of the present invention.

[0029] Please refer to Figure 1 The paper cup cover production equipment provided by the present invention includes a cup cover ring forming device 10, a cup cover sheet forming device (not shown), a paper cup cover assembly device 20 and a packaging line 30.

[0030] Please refer to Figure 2 The paper cup cover assembly device 20 includes a workbench 201, a turntable 202 rotatably arranged on the workbench 201, a cup cover ring flipping mechanism 21 arranged on the workbench 201 and located on the circumferential outer side of the turntable 202 and distributed in a clockwise or counterclockwise direction, a cup cover ring bottom rolling and mouth rolling mechanism 22, a cup cover sheet lowering mechanism 23, a hot air blowing mechanism 24, a forming pre-pressing mechanism 25, an ultrasonic welding mechanism 26 and a rolling and unloading mechanism 27.

[0031] A plurality of cup cover clamps are arranged at intervals on the edge of the turntable 202 .

[0032] The cup cover ring flipping mechanism 21 is used to transfer the cup cover ring 110 from the cup cover ring forming device 10 to the cup cover fixture on the turntable 202 of the paper cup cover assembling device 20, and flip the cup cover ring 110 so that the extension part 111 is placed upward.

[0033] The cup cover ring bottom rolling and mouth rolling mechanism 22 is used to form a top rolling portion 112 and a bottom rolling portion 113 of the cup cover ring 110 .

[0034] The lower cup cover sheet mechanism 23 is used to put the cup cover sheet 120 into the cup cover ring 110 , and make the circumferential winding portion 121 of the cup cover sheet 120 be located between the bottom winding portion 113 and the cup cover ring 110 .

[0035] The hot air blowing mechanism 24 is used to heat the cup cover ring 110 and the cup cover sheet 120 to soften the adhesive film.

[0036] The molding pre-pressing mechanism 25 is used to pre-press the cup cover ring 110 and the cup cover sheet 120 .

[0037] The ultrasonic welding mechanism 26 is used to perform pressure welding on the cup cover ring 110 and the cup cover sheet 120 , so that the cup cover ring 110 and the cup cover sheet 120 are tightly connected.

[0038] The rolling and unloading mechanism 27 is used to take out the paper cup cover 100 from the cup cover fixture of the rotating disk 202, and roll the cup cover ring 110 so that the inner wall of the cup cover ring 110 protrudes to form a Fig.12 The snap ring 114 shown enables the paper cup cover 100 to snap into each other when the paper cup cover is closed, thereby improving the reliability and sealing of the closing.

[0039] Please refer to Figures 3 to 6 The cup cover ring flipping mechanism 21 includes a flipping assembly 211 rotatably arranged at the side of the cup cover ring forming device 10 and a cup pulling assembly 212 arranged below the turntable 202 .

[0040] The flip assembly 211 includes a first fixed seat 2111, a first rocker arm 2112 whose first end is rotatably connected to the first fixed seat 2111, a first rotating disk 2113 eccentrically connected to the middle part of the first rocker arm 2112, a first rotating shaft 2114 passing through the center of the first rotating disk 2113, a first transmission rod 2115 whose bottom end is rotatably connected to the second end of the first rocker arm 2112, a flip shaft 2116 whose one end is rotatably connected to the top end of the first transmission rod 2115 and is rotatably arranged at the side of the cup cover ring forming device 10, and a ring clamp 2117 fixedly connected to the flip shaft 2116.

[0041] A first opening is provided in the middle of the annular fixture 2117, and a plurality of elastic abutment blocks 2118 are provided on the inner side wall of the annular fixture 2117 at intervals. The distance between the side of the elastic abutment block 2118 facing the center of the annular fixture 2117 and the center of the annular fixture 2117 gradually increases from one end close to the paper cup lid assembly device 20 to one end close to the cup lid ring forming device 10. In this embodiment, the inner side of the elastic abutment block 2118 facing the center of the annular fixture 2117 is an inclined surface or an arc-shaped curved surface. An elastic element, such as a spring, is connected between the elastic abutment block 2118 and the annular fixture 2117.

[0042] A first eccentric cam 21131 is disposed in the middle of one side of the first rotating disk 2113, a first eccentric track groove is provided on the outer side of the first eccentric cam 21131, a first guide post is protrudingly disposed in the middle of the first swing rod 2112, and the first guide post is located in the first eccentric track groove. The first rotating shaft 2114 drives the first eccentric cam 21131 to rotate, and the first guide post moves up and down under the action of the first eccentric cam 21131, so that the first swing rod 2112 swings up and down in the vertical plane, and then the first transmission rod 2115 moves up and down, and then the flip shaft 2116 flips back and forth, and the annular clamp 2117 clamps the cup cover ring 110 and drives the cup cover ring 110 to flip 180 degrees.

[0043] When the annular clamp 2117 contacts the cup cover ring 110, the inner side surface of the elastic abutment block 2118 plays a guiding role, so that the cup cover ring 110 gradually enters between the elastic abutment blocks 2118, and at the same time, the elastic abutment blocks 2118 and the cup cover ring 110 are slightly deformed.

[0044] The cup pulling assembly 212 includes a second rotating disk 2121, a second rotating shaft passing through the center of the second rotating disk 2121, a second fixed seat 2122 arranged on one side of the second rotating disk 2121, a second rocker rod 2123, a lifting seat 2124, a cup pulling cylinder 2125 installed on the lifting seat 2124, a cup pulling block 2126 arranged at the end of the output shaft of the cup pulling cylinder 2125, and a cup pulling member 2127 fixed to the top of the lifting seat 2124.

[0045] A second eccentric cam is arranged in the middle of one side of the second rotating disk 2121, a second eccentric track groove is opened on the outer side of the second eccentric cam, the middle part of the second swing rod 2123 is rotatably connected to the second fixed seat 2122, a second guide column is protrudingly arranged at the first end of the second swing rod 2123, and the second guide column is located in the second eccentric track groove.

[0046] The lifting seat 2124 has a bottom plate, a top plate, and at least two first connecting columns 2128 connecting the bottom plate and the top plate. A first opening is provided on the top plate, and a connecting ring 21241 is provided at the first opening. The cup pulling cylinder 2125 is provided between the bottom plate and the top plate, and the output shaft of the cup pulling cylinder 2125 passes through the first opening of the top plate and the connecting ring 21241.

[0047] The cup puller 2127 includes a bottom ring 21271 connected to the connecting ring 21241 , a plurality of elastic connecting parts 21272 connected to the top of the bottom ring 21271 , and an action part 21273 connected to the top of the elastic connecting part 21272 .

[0048] A guiding inclined surface 27274 is disposed on the inner side of the top of the action portion 21273 , and a buckle portion 21275 is protrudingly disposed on the outer side of the top. The action portion 21273 is recessed with a first groove 21276 on one side of the buckle portion 21275 facing the elastic connecting portion 21272 .

[0049] The cup pulling block 2126 is truncated cone-shaped, and the circumferential side surface abuts against the guide slope 27274 .

[0050] The cup pulling assembly 212 further includes a first sleeve 2129 disposed on the workbench 201 and sleeved on the first connecting column 2128 .

[0051] The second rotating shaft drives the second rotating disk 2121 to rotate, so that the second swing rod 2123 swings around the second fixed seat 2122, and then the lifting seat 2124 moves up and down, and the cup pulling cylinder 2125 drives the cup pulling block 2126 to move toward each other, so as to push open the several action parts 21273 of the cup pulling member 2127, so that the several action parts 21273 are stretched outward, thereby pulling the extension part 111 of the cup cover ring 110. Then the annular clamp 2117 flips upward, so that the cup cover ring 110 is separated from the annular clamp 2117.

[0052] Please refer to Figures 7 to 10 The wire rolling and material unloading mechanism 27 includes a material lifting component 271, a material moving component 272, a wire rolling component 273 and a material receiving component 274.

[0053] The ejector assembly 271 includes a third rotating disk 2711 , a third rotating shaft passing through the center of the third rotating disk 2711 , an L-shaped swing rod 2712 , an ejector rod 2713 , a support block 2714 disposed on the ejector rod 2713 , and a third fixing seat 2715 .

[0054] A third eccentric cam 27111 is disposed in the middle of one side of the third rotating disk 2711, and a third eccentric track groove is disposed on the outer side of the third eccentric cam 27111. A third guide column is connected to the first end of the L-shaped swing rod 2712, and the third guide column is located in the third eccentric track groove. The middle of the L-shaped swing rod 2712 is rotatably connected to the third fixing seat 2715, and the second end of the L-shaped swing rod 2712 is rotatably connected to the top rod 2713.

[0055] The third rotating shaft drives the third rotating disk 2711 to rotate, so that the L-shaped swing rod 2712 swings around the third fixing seat 2715, and then the push rod 2713 and the support block 2714 move up and down, and the support block 2714 extends from the cup cover clamp, thereby pushing up the paper cup cover 100.

[0056] The material moving assembly 272 includes a material moving bracket 2721 , a rotating drum 2722 rotatably disposed on the material moving bracket 2721 , a plurality of material suction heads 2723 disposed on the circumferential side wall of the rotating drum 2722 , and a material moving driving unit 2724 for driving the rotating drum 2722 to rotate.

[0057] The central axis of the rotating drum 2722 is arranged parallel to the material moving bracket 2721 .

[0058] A fixed shell is disposed outside the rotating drum 2722, and the fixed shell is connected to the material moving bracket 2721. The inside of the rotating drum 2722 also has a vacuum unit connected to the material suction head 2723, so that the material suction head 2723 can generate negative pressure to improve the suction force.

[0059] The wire rolling assembly 273 includes a wire rolling driving unit 2731 disposed on the material moving bracket 2721, a roller 2732 disposed on the top of the fixed housing, a wire rolling convex mold disposed on the top of the roller 2732, and a wire rolling concave mold 2733 sleeved on the material suction head 2723. The wire rolling driving unit 2731 drives the roller 2732 to rotate through a transmission belt, and the wire rolling convex mold is disposed adjacent to the material suction head 2723 located above the rotating drum 2722.

[0060] A wire rolling groove 27331 is recessed on the circumferential outer wall of the wire rolling concave die 2733, and a wire rolling convex ring 27321 is protrudingly provided on the circumferential outer wall of the wire rolling convex die of the roller 2732. The wire rolling convex ring 27321 is at least partially located in the wire rolling groove 27331. When the roller 2732 rotates, the wire rolling convex die and the wire rolling concave die 2733 cooperate with each other to emboss a clamping ring 114 on the cup cover ring 110.

[0061] Please refer to Fig.10 The material receiving assembly 274 includes a material receiving cylinder 2741, a material receiving base plate 2742, two clamping cylinders 2743 respectively arranged at both ends of the material receiving base plate 2742, and a clamping clamp 2744 arranged on the output shaft of the clamping cylinder 2743.

[0062] The side surface of the clamping clamp 2744 is arc-shaped, and the sides facing each other of the two clamping clamps 2744 are both recessed with clamping grooves.

[0063] During operation, the receiving cylinder 2741 first drives the receiving bottom plate 2742 to move forward to below the suction head 2723 , so that the clamping cylinder 2743 and the clamping fixture 2744 are located on both sides of the suction head 2723 and the paper cup cover 100 , respectively.

[0064] Afterwards, the two clamping cylinders 2743 respectively drive the two clamping clamps 2744 to move toward each other, thereby clamping the paper cup cover 100, and the suction head 2723 stops sucking the paper cup cover 100.

[0065] Finally, the receiving cylinder 2741 drives the receiving bottom plate 2742 to retreat, so that the paper cup cover 100 is unloaded.

[0066] Compared with the prior art, the cup cover ring flipping mechanism of the present invention includes a flipping assembly 211 rotatably arranged at the side of the cup cover ring forming device and a cup pulling assembly 212 arranged below the turntable; the flipping assembly 211 includes a first fixed seat 2111, a first swing rod 2112 rotatably connected to the first fixed seat 2111 at a first end, a first rotating disk 2113 eccentrically connected to the middle of the first swing rod 2112, a first rotating shaft 2114 passing through the center of the first rotating disk 2113, a first transmission rod 2115 rotatably connected to the second end of the first swing rod 2112 at a bottom end, and a flipping shaft 2116 rotatably arranged at the side of the cup cover ring forming device 10, one end of which is rotatably connected to the top end of the first transmission rod 2115 and a ring fixture 2117 fixedly connected to the flip shaft 2116; the cup pulling assembly 212 includes a second rotating disk 2121, a second rotating shaft passing through the center of the second rotating disk 2121, a second fixed seat 2122 arranged on one side of the second rotating disk 2121, a second swing rod 2123 eccentrically connected to the second rotating disk 2121 at the first end, a lifting seat 2124 rotatably connected to the second end of the second swing rod 2123, a cup pulling cylinder 2125 installed on the lifting seat 2124, a cup pulling block 2126 arranged at the end of the output shaft of the cup pulling cylinder 2125, and a cup pulling member 2127 fixed to the top of the lifting seat 2124, and the middle part of the second swing rod 2123 is rotatably connected to the second fixed seat 2122. The present invention also includes a paper cup cover production device having the above-mentioned cup cover ring flipping mechanism. In this way, the cup cover ring can be transferred and flipped, which is convenient for the subsequent reception of the cup cover piece and the assembly with the cup cover piece.

[0067] The above are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Any modification, equivalent substitution or improvement within the spirit of the present invention is included in the scope of the claims of the present invention.

Claims

1. A cup cover ring flipping mechanism, used to transfer a cup cover ring from a cup cover ring forming device to a turntable of a paper cup cover assembly device, and to flip the cup cover ring at the same time, characterized in that: The cup cover ring flipping mechanism includes a flipping assembly rotatably arranged at the side of the cup cover ring forming device and a cup pulling assembly arranged below the turntable; the flipping assembly includes a first fixed seat, a first swing rod rotatably connected to the first fixed seat at the first end, a first rotating disk eccentrically connected to the middle of the first swing rod, a first rotating shaft passing through the center of the first rotating disk, a first transmission rod rotatably connected to the second end of the first swing rod at the bottom end, a flipping shaft rotatably connected to the top of the first transmission rod at one end and rotatably arranged at the side of the cup cover ring forming device, and an annular clamp fixedly connected to the flipping shaft; the cup pulling assembly includes a second rotating disk, a second rotating shaft passing through the center of the second rotating disk, a second fixed seat arranged on one side of the second rotating disk, a second swing rod eccentrically connected to the second rotating disk at the first end, a lifting seat rotatably connected to the second end of the second swing rod, a cup pulling cylinder installed on the lifting seat, and a cup pulling cylinder arranged on the lifting seat. A cup-pulling block at the end of the output shaft of the cylinder and a cup-pulling member fixed to the top of the lifting seat, the middle part of the second rocker arm is rotatably connected to the second fixed seat, the lifting seat has a bottom plate, a top plate and at least two first connecting columns connecting the bottom plate and the top plate; a first opening is opened on the top plate, a connecting ring is arranged at the first opening, the cup-pulling cylinder is arranged between the bottom plate and the top plate, and the output shaft of the cup-pulling cylinder passes through the first opening and the connecting ring of the top plate upward; the cup-pulling member includes a bottom ring connected to the connecting ring, a plurality of elastic connecting parts connected to the top of the bottom ring and an action part connected to the top of the elastic connecting part, a guide inclined surface is arranged on the inner side of the top of the action part, and a buckle part is protrudingly arranged on the outer side of the top; the cup-pulling block is truncated cone-shaped, and the circumferential side of the cup-pulling block abuts against the guide inclined surface, a first opening is arranged in the middle of the annular clamp, and a plurality of elastic abutting blocks are protrudingly arranged at intervals on the inner side wall of the annular clamp.

2. The cup cover ring turning mechanism according to claim 1, characterized in that: The distance between the side of the elastic abutment block facing the center of the annular fixture and the center of the annular fixture gradually increases from one end close to the paper cup cover assembly device to one end close to the cup cover ring forming device, and an elastic element is connected between the elastic abutment block and the annular fixture.

3. The cup cover ring turning mechanism according to claim 2, characterized in that: The inner side surface of the elastic abutment block facing the center of the annular clamp is an inclined surface or an arc-shaped curved surface.

4. The cup cover ring turning mechanism according to claim 1, characterized in that: A first eccentric cam is arranged in the middle of one side of the first rotating disk, a first eccentric track groove is opened on the outer side of the first eccentric cam, a first guide column is protrudingly arranged in the middle of the first swing rod, and the first guide column is located in the first eccentric track groove.

5. The cup cover ring turning mechanism according to claim 2, characterized in that: The cup pull assembly also includes a first sleeve which is arranged on the paper cup cover assembly device and sleeved on the first connecting column.

6. The cup cover ring turning mechanism according to claim 1, characterized in that: A second eccentric cam is arranged in the middle of one side of the second rotating disk, a second eccentric track groove is opened on the outer side of the second eccentric cam, a second guide column is protrudingly arranged on the first end of the second swing rod, and the second guide column is located in the second eccentric track groove.

7. A paper cup lid production equipment, characterized in that: It comprises a cup cover ring forming device, a cup cover sheet forming device and a paper cup cover assembling device; the paper cup cover assembling device comprises a workbench, a turntable rotatably arranged on the workbench, a cup cover ring turning mechanism as described in any one of claims 1 to 6 which is arranged on the workbench and located on the circumferential outer side of the turntable and distributed clockwise or counterclockwise, and a cup cover ring bottom rolling and mouth rolling mechanism, a cup cover sheet lowering mechanism, a hot air blowing mechanism, a forming pre-pressing mechanism, an ultrasonic welding mechanism and a wire rolling and material unloading mechanism.

Images