Automatic assembly line equipment for assembling composite cup covers

Abstract

The invention discloses automatic assembly line equipment for assembling a composite cup cover and a press-fitting die in the equipment. The automatic assembly line equipment is used for achieving automatic production and assembly of the open type composite cup cover. The equipment comprises a supporting frame body, a power rotating disc, a cup cover press-fitting device, an outer layer and inner layer continuous feeding device and the like. The power rotating disc is matched with the press-fitting device, and continuous alternate press-fitting and automatic assembly production of the composite cup covers are achieved through the rotating index. The outer layer feeding device adjusts the discharging direction of the outer layer of the cup cover through an orientation mechanism and is accurately aligned with the press-fitting die. The outer layer and the inner layer of materials of the cup cover continuously enter the press-fitting die after passing through the respective feeding devices, and the whole cup cover is formed under the alternate action of the two power press-fitting assemblies, so that automatic assembly production is achieved. A movable film belt is arranged in the press-fitting die, and the effects of buffering the cup cover and preventing the cup cover from making direct contact with the die are achieved. The movable film belt is fixed through an elastic belt, and a guide piece is arranged to ensure the moving stability of the movable film belt.

Description

[0001] This application is a divisional application of the Chinese patent application filed on January 15, 2024, with application number 2024100605262 and invention name “Automatic assembly line equipment for composite cup lids and pressing mold in the equipment”. Technical Field

[0002] The present invention relates to the technical field of automatic production equipment for cup lids, and specifically provides an automatic assembly line device for assembling composite cup lids and a new type of press-fitting mold, which is provided with a flexible diaphragm for buffering and protecting the cup lid material; the diaphragm is reliably hung in the mold through an elastic mechanism to achieve smooth movement. This press-fitting mold with a reasonable structure and reliable operation is assembled in an automatic molding assembly line, which can efficiently mold composite cup lid finished products, while effectively preventing product surface damage and ensuring molding quality. Background Art

[0003] Many thermos cup lids are made of composite structures, consisting of two layers of different materials, to give full play to the advantages of each layer. For example, the lid of a stainless steel thermos cup is usually made of a stainless steel surface layer and a plastic lining, which are glued together. Figure 1 This is a more common open-mouth composite cup cover 01, which has an open mouth and a height slightly larger than the diameter. It includes a cup cover outer layer 011 made of stainless steel and a cup cover inner layer 012 made of plastic. The cup cover outer layer 011 provides aesthetic appearance, strength and heat insulation, while the cup cover inner layer 012 provides a sealed connection with the cup mouth. Compared with the all-metal structure, this composite design enables the cup cover to have both mechanical strength and heat insulation, as well as leak-proof sealing performance.

[0004] In the production process, a turntable multi-station assembly line is often used to assemble the inner and outer layers. A press-fitting mold is set on the circumference of the turntable of this equipment. The internal shape of the press-fitting mold corresponds to the shape of the outer layer, and the size is slightly smaller than the outer layer, so that the outer layer can be inserted from top to bottom and hold tightly, and then glue is applied to the inner wall of the outer layer, and then the plastic inner layer is pressed into the assembly to achieve a firm bonding of the inner and outer layers. In order to prevent scratches on the inner wall of the press-fitting mold when the outer layer is inserted, the inner wall of the press-fitting mold needs to be made of flexible material. However, during the pressing process, the downward squeezing of the stainless steel outer layer will stretch and wear the inner wall material, and the inner wall needs to be replaced frequently.

[0005] Invention patent application text publication number CN115837575A discloses an assembly mechanism for a coffee cup, which uses a six-axis robotic arm to automatically assemble the cup body, but the cost and maintenance of the arm equipment are relatively high.

[0006] In addition, in order to prevent scratches on the outer surface, it is impossible to use a vibration plate to achieve automatic loading, because high-frequency vibration will cause strong friction on the outer surface, and most of them are currently operated manually. An alternative solution may be a multi-axis robotic arm, but the cost and maintenance are high. Summary of the invention

[0007] In view of the above problems, the present invention provides an automatic assembly line equipment for assembling composite cup lids. The equipment is designed with a traceless pressing device and an automatic assembly line, which can at least solve the above problems in the production of such cup lids.

[0008] The invention object of the present invention is achieved through the following technical scheme: an automatic assembly line device for assembling a composite cup lid, comprising: A support frame; a power turntable installed in the support frame; a seamless pressing device for cup cover assembly in cooperation with the power turntable; an outer layer continuous feeding device for the seamless pressing device to feed the outer layer of the cup cover; an inner layer continuous feeding device for the seamless pressing device to feed the inner layer of the cup cover; through the rotation index of the power turntable, the continuous alternating pressing of the composite cup cover is completed to realize automatic assembly production; The seamless pressing device comprises: A plurality of press-fitting dies fixed in a circumferential array on the disc body of the power turntable; a press-fitting frame mounted on the support frame; a first power press-fitting assembly whose main body is fixed on the press-fitting frame and applies force to the outer layer of the cup cover to enter the press-fitting dies; a second power press-fitting assembly whose main body is fixed on the press-fitting frame and presses the inner layer of the cup cover into the outer layer of the cup cover; The outer layer continuous feeding device includes: an orientation mechanism for adjusting the discharge direction of the outer layer of the cup cover; and a bag conveying channel that docks with the orientation mechanism to align the discharge direction of the outer layer of the cup cover with the pressing mold. The technical solution defines the basic composition of the overall equipment and clarifies the function of the power turntable to achieve automatic alternating pressing.

[0009] Preferably, the outer layer continuous feeding device further comprises: a centrifugal power turntable for receiving the outer layer of the cup lid input from the outside and outputting it in a single row; and a connecting frame for fixing the centrifugal power turntable to the pressing frame. This technical solution further defines the structure of the outer layer continuous feeding device and enhances its practicality.

[0010] Preferably, the orienting mechanism comprises: a discharge port opened downward at the end of the discharge channel; a discharge direction adjusting actuator disposed at the discharge port and slidable perpendicular to the conveying direction; a main body fixed at the discharge port, and a telescopic part connected to a driving source of the discharge direction adjusting actuator. This technical solution specifically defines the structure of the orienting mechanism, which is convenient for implementation.

[0011] Preferably, the size of the discharge direction adjustment actuator on the X-axis is larger than the size of the discharge channel on the X-axis; the discharge direction adjustment actuator is provided with an uphill section and a downhill section along the conveying direction, and two downward-opening double doors are provided outside the downhill section; a conical hole is provided at the center of the intersection line at the closed position of the double doors, and the upper aperture of the conical hole is larger than the maximum diameter of the outer layer of the cup cover, and the lower aperture is smaller than the minimum diameter. This technical solution defines the discharge direction adjustment actuator in detail and improves operability.

[0012] Preferably, an automatic gluing device is provided between the traceless pressing device and the power turntable to automatically add glue to the inner wall of the outer layer of the cup cover. This technical solution adds an automatic gluing device and improves the automation of the device.

[0013] In view of the above problems, the present invention further provides an improved press-fitting die for an automatic assembly line device for assembling a composite cup lid, the press-fitting die comprising: a plurality of vertical long grooves are arranged in a circumferential array on the outer circumference of the press-fitting die; a through hole is arranged at the center of the inner bottom surface, and the setting position, length and number of the edges of the through hole correspond to the long grooves one by one; A film strip is provided between each side of the through hole and the corresponding long groove, and the two ends of the film strip are respectively fixed to the inner wall of the corresponding side of the through hole and the long groove. This technical solution defines the specific structure and beneficial technical features of the press-fitting mold.

[0014] Preferably, one end of the film strip is fixed in the long groove by an elastic band. This technical solution further limits the fixing method of the film strip and enhances reliability.

[0015] Preferably, the two side walls of each of the long grooves are symmetrically provided with guide slots, and a guide rod is fixed on the film strip, and the two ends of the guide rod enter the corresponding guide slots respectively. This technical solution guides and limits the movement of the film strip, thereby improving the operational reliability.

[0016] Preferably, a film strip is further arranged on the upper surface of the gap between two adjacent film strips. This technical solution increases the arrangement mode of the buffer film strip and enhances the buffer protection effect.

[0017] In view of the above problems, the present invention also provides an automatic assembly line device for assembling composite cup lids, wherein the device adopts an improved press-fitting die. The technical solution applies a press-fitting die with beneficial technical features to the overall device, which can improve the effect of the overall device.

[0018] In summary, the present invention has the following advantages compared with the prior art: 1. The automatic and continuous production of composite cup lids is realized, and the production efficiency is greatly improved through the alternating pressing of the power turntable.

[0019] 2. The use of a traceless pressing device ensures the surface quality of the finished cup cover without indentation. A flexible diaphragm is set in the pressing mold to play a buffering and protective role; the diaphragm is reliably hung through an elastic mechanism to ensure smooth movement.

[0020] 3. Set up continuous feeding devices for inner and outer layers to provide stable material supply for the pressing process.

[0021] 4. The discharging direction of the outer layer material is adjusted through the directional mechanism, and the pressing mold is accurately aligned, which is conducive to accurate assembly.

[0022] 5. The pressing mold adopts a movable film belt, which effectively cushions and avoids direct contact between the cup cover and the mold, reducing damage.

[0023] 6. The film belt is fixed with elastic belt and guided with limit design, which improves the operational reliability.

[0024] 7. The equipment has a reasonable structure, reliable operation, high degree of automation, and greatly improved production efficiency. It achieves the purpose of automatically assembling and producing composite cup lids and has a very good comprehensive effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a structural schematic diagram of the outer layer continuous feeding device; Figure 3 It mainly displays the structural diagram of the outer layer continuous feeding device from another angle; Figure 4 The main display is the structural diagram of the directional mechanism; Figure 5 The main display is the structure of the press-fitting die and the power turntable (partially cut away); Figure 6 yes Figure 5 The partial enlarged view at point A in the middle mainly shows the internal structure of the press-fitting die; Figure 7 yes Figure 6 The enlarged partial view at point B in the middle mainly shows the arrangement of components such as the film belt and elastic belt.

[0027] Markings in the figure: supporting frame 1, power turntable 2, seamless pressing device 3, outer layer continuous feeding device 4, pressing mold 31, long groove 311, regular polygonal through hole 312, film belt 313, elastic belt 314, guide slide 315, guide rod 316, pressing frame 32, first power pressing assembly 33, second power pressing assembly 34, centrifugal power turntable 41, railing 411, connecting frame 42, orienting mechanism 43, discharge port 431, direction adjustment actuator 432, driving source 433, uphill section 434, downhill section 435, double doors 436, conical hole 437, cloth bag conveying channel 44. DETAILED DESCRIPTION

[0028] The present invention will be further described below with reference to the embodiments shown in all the accompanying drawings: Example 1 Refer to the attached Figure 1-7 This embodiment discloses an automatic assembly line device for a composite cup cover and a pressing mold in the device, which are used to realize the automated production and assembly of an open composite cup cover 01.

[0029] The equipment includes: a support frame 1, a power turntable 2 installed in the support frame 1, a seamless pressing device 3 that cooperates with the power turntable 2 to realize the assembly of the cup cover, and an outer layer continuous feeding device 4 that provides the cup cover outer layer 011 for the seamless pressing device 3 as the front process of the overall pressing, and an inner layer continuous feeding device that provides the cup cover inner layer 012 for feeding (this is a conventional vibration plate feeding mechanism not shown in the figure). Among them, an automatic gluing device for automatically adding glue to the inner wall of the outer layer is also provided between the outer layer continuous feeding device 4 and the inner layer continuous feeding device. The automatic gluing device is also a conventional arbitrary device, not shown in the figure.

[0030] The seamless pressing device 3 includes a plurality of pressing dies 31 fixed in a circular array on the disc body of the power turntable 2, a pressing frame 32 installed on the support frame 1, a first power pressing assembly 33 whose main body is fixed on the pressing frame 32, a component that performs telescopic operation is located directly above one of the pressing dies 31, and is used to apply force to the outer layer 011 of the cup cover from top to bottom so that it enters the pressing die 31 and the outer wall is tightly wrapped, and a second power pressing assembly 34 whose main body is also fixed on the pressing frame 32, a component that performs telescopic operation is located directly above one of the pressing dies 31 but is spaced from the first power pressing assembly 33; the second power pressing assembly 34 is used to press the inner layer 012 of the cup cover into the outer layer 011 of the cup cover.

[0031] Reference Figure 2-4The continuous feeding device 4 includes a centrifugal power turntable 41 for receiving the cup cover outer layer 011 input from the outside and outputting it in a single row, a connecting frame 42 for fixing the centrifugal power turntable 41 to the press-fitting frame 32, an orientation mechanism 43 provided in the discharge channel 001 of the centrifugal power turntable 41 for adjusting the discharge direction of the cup cover outer layer 011, and a bag conveying channel 44 docking with the orientation mechanism 43 to align the discharge direction of the cup cover outer layer 011 with the press-fitting mold 31. Among them, a railing 411 for controlling the height direction of the cup cover outer layer 011 from entering the discharge channel 001 is provided in the traveling direction of the centrifugal power turntable 41 for conveying the material, so that the cup cover outer layer 011 enters the discharge channel 001 in a horizontal manner, which is convenient for the subsequent discharge direction adjustment.

[0032] The orienting mechanism 43 comprises: a discharge port 431 downwardly opened at the end of the discharge channel 001, a discharge direction adjusting actuator 432 slidably disposed at the discharge port 431 and perpendicular to the conveying direction, a main body fixed at the discharge port 431, and a telescopic portion connected to a driving source 433 of the discharge direction adjusting actuator 432; in order to facilitate observation and introduction of the structure and function of the discharge direction adjusting actuator 432, Figure 4 In the figure, a coordinate system is set, and the side wall on one side of the Y-axis in the discharge port 431 is cut off.

[0033] Refer to the attached Figure 4 , the size of the discharge direction adjustment actuator 432 on the X axis is about twice the size of the discharge channel 001 on the X axis, that is, at the beginning, after the discharge port 431 is closed by the discharge direction adjustment actuator 432, a part of it is still outside the discharge port 431. The discharge direction adjustment actuator 432 has an upslope section 434 and then a downslope section 435 along the conveying direction. In the aforementioned initial state, the outer part of the downslope section is provided with two side doors 436 that can be opened downwards. A conical hole 437 is provided at the center of the intersection line after the two side doors 436 are closed. The aperture of the upper part of the conical hole 437 is larger than the diameter of the outer layer 011 of the cup cover at the largest point, and the aperture of the lower part of the conical hole 437 is smaller than the diameter of the outer layer 011 of the cup cover at the smallest point.

[0034] When the cup cover outer layer 011 lies horizontally on the downhill section 435, it rolls and slides downward to the lowest point and is on the same X-axis line with the center of the conical hole 437 due to the slope of the downhill section 435. At this time, the driving source 433 drives the discharge direction adjustment actuator 432 to move, so that the conical hole 437 comes to the bottom of the cup cover outer layer 011. Since the center of gravity of the cup cover outer layer 011 is on the side with the bottom surface, the cup cover outer layer 011 will automatically face the opening side roughly upward under the taper of the conical hole. In this way, after the two double doors 436 are opened synchronously, the cup cover outer layer 011 can fall in the direction with the opening side facing upward.

[0035] The opening and closing of the two side doors 436 are carried out by a combination of a motor and a conveyor belt, which has better synchronization. Alternatively, two motors can be set to be controlled separately.

[0036] During the operation of the automatic assembly line, the inner and outer layers of materials are continuously fed into the pressing mold through their respective feeding devices, and then the cup cover is formed as a whole under the alternating pressing action of the two power pressing components. The equipment realizes the automatic production of cup covers and improves production efficiency.

[0037] In order to optimize the durability of the seamless pressing device 3 and reduce maintenance costs, the pressing die 31 is designed as follows: Reference Figure 5-7 For the convenience of observation, the press-fitting mold 31 in the figure is cut. The outer peripheral surface of the press-fitting mold 31 has a plurality of vertical long grooves 311 in a circumferential array. A regular polygonal through hole 312 smaller than the bottom diameter of the cup cover outer layer 011 is provided at the center of the inner bottom surface of the press-fitting mold 31, wherein the setting position, length and number of each side of the regular polygonal through hole 312 correspond to the long grooves 311 one by one. A film belt 313 of plastic material with good toughness is installed between each side of the regular polygonal through hole 312 and the corresponding long groove 311, one end of the film belt 313 is fixed in the inner wall of the corresponding side of the regular polygonal through hole 312, and the other end is fixedly connected to one end of the elastic belt 314 through the set elastic belt 314, and the other end of the film belt 313 is fixed in the long groove 311 after the elastic belt tightens the film belt 313. In this way, when the cup cover outer layer 011 falls into the pressing mold 31, all the film strips 313 play a buffering role for the cup cover outer layer 011, and the cup cover outer layer 011 will not directly contact the inner wall of the pressing mold 31. When the cup cover outer layer 011 is pressed, the film strip 313 will move accordingly with the movement of the cup cover outer layer 011 to overcome the elastic force of the elastic strip 314, and this follow-up mode greatly reduces the squeeze damage.

[0038] In order to improve the movement stability of the film belt 313, guide grooves 315 are symmetrically arranged on the two side walls of each long groove 311, and a guide rod 316 is fixedly arranged on the film belt 313, and the two ends of the guide rod 316 enter the guide groove 315 respectively, so that the film belt 313 has a limit when moving, providing stability.

[0039] In addition, another layer of film strip may be arranged on the upper surface of the gap between two adjacent film strips 313 in the same manner as the film strip 313, which can further increase the buffering effect and avoid direct contact with the inner wall of the mold.

[0040] In order to facilitate the removal of the pressed cup lid, an ejection mechanism (not shown in the conventional mechanism diagram) is provided below the power turntable 2, corresponding to the center of the regular polygonal through hole 312, so as to lift the lower bottom surface of the cup lid and assist in the extraction of the cup lid.

[0041] Example 2 An automatic assembly line device for assembling a composite cup lid having the press-fitting mold 31 in Example 1, comprising: Equipment rack; A first power turntable and a second power turntable mounted in the equipment frame; A cup cover assembly mechanism disposed between two power turntables; A first outer layer continuous feeding device for feeding the outer layer of the cup cover and a first inner layer continuous feeding device for feeding the inner layer of the cup cover are provided for the cup cover assembly mechanism; The cup cover assembly mechanism includes a plurality of first pressing units fixed on a first power turntable; an assembly frame arranged on a device frame; an upper pressing assembly installed on the assembly frame to apply force to the outer layer of the cup cover and a lower pressing assembly installed on the assembly frame to apply force to the inner layer of the cup cover; The first outer layer feeding device includes a buffer platform arranged on one side of the assembly frame; a first orientation mechanism for adjusting the orientation of the outer layer of the cup cover; When the second power turntable rotates in the indexing, the first pressing unit enters the assembly mechanism area in turn to perform the pressing action, and the first outer layer feeding device and the first inner layer feeding device continuously transport the outer and inner layer materials of the cup cover to the buffer platform, and then enter the first pressing unit after orientation, and the upper and lower pressing components are alternately pressed to complete the assembly of the cup cover.

[0042] This embodiment realizes another technical means for automatic assembly production of cup lids by adding a second power turntable and an improved feeding structure.

[0043] The above description of the disclosed embodiments will make it apparent to those skilled in the art that various modifications to the embodiments generally defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A press-fitting die for an automatic assembly line for assembling a composite cup cover, used to prevent scratches on the outer layer of the cup cover during the press-fitting process, characterized in that: The press-fitting mold (31) comprises: a plurality of vertical long grooves (311) are arranged in a circular array on the outer circumference of the press-fitting mold; a regular polygonal through hole (312) is arranged at the center of the inner bottom surface, and the setting position, length and number of the sides of the regular polygonal through hole (312) correspond one-to-one to the long grooves (311); a film belt (313) is arranged between each side of the regular polygonal through hole (312) and the corresponding long groove (311), one end of the film belt (313) is fixed to the inner wall of the corresponding side of the regular polygonal through hole (312), and the other end is fixed to the long groove (311) through an elastic belt (314); guide grooves (315) are symmetrically arranged on the two side walls of each of the long grooves (311), and a guide rod (316) is fixed on the film belt (313), and the two ends of the guide rod (316) enter the corresponding guide groove (315) respectively; The film strip (313) can move along with the movement of the outer layer of the cup cover, thereby providing a buffer and protection for the outer layer of the cup cover, preventing the outer layer of the cup cover from directly contacting the inner wall of the pressing mold, and preventing scratches on the surface of the outer layer of the cup cover.

2. The pressing mold (31) of the automatic assembly line equipment for assembling composite cup lids according to claim 1 is characterized in that: A film strip is also arranged on the upper surface of the gap between two adjacent film strips (313).

3. An automatic assembly line device for assembling composite cup lids, comprising a device frame, a turntable installed in the device frame, and a press-fitting device for assembling the cup lids in cooperation with the turntable, the press-fitting device comprising: A plurality of press-fitting dies as claimed in claim 1 or claim 2 are fixed on the disc body of the turntable in a circular array, the press-fitting dies are used to prevent the outer layer of the cup cover from being scratched during the press-fitting process, and provide a feeding device for the press-fitting device to feed the inner and outer cup covers; it is characterized in that the press-fitting die comprises: a plurality of vertical long grooves are arranged in a circular array on the outer circumference of the press-fitting die; a regular polygonal through hole is arranged at the center of the inner bottom surface, and the setting position, length and number of the edges of the regular polygonal through hole correspond to the long grooves one by one; a film strip is arranged between each edge of the regular polygonal through hole and the corresponding long groove, one end of the film strip is fixed to the inner wall of the corresponding edge of the regular polygonal through hole, and the other end is fixed to the long groove by an elastic band; guide grooves are symmetrically arranged on the two side walls of each of the long grooves, a guide rod is fixed on the film strip, and the two ends of the guide rod enter the corresponding guide grooves respectively; The film strip can move along with the movement of the outer layer of the cup cover, thereby providing a buffer and protective effect to the outer layer of the cup cover, preventing the outer layer of the cup cover from directly contacting the inner wall of the pressing mold, and preventing scratches on the surface of the outer layer of the cup cover.

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