Automatic pre-plastic packaging equipment for disposable tearable towel roll

Abstract

The utility model discloses automatic pre-plastic packaging equipment for a disposable tearable towel roll. The automatic pre-plastic packaging equipment comprises an automatic blanking device and a pre-plastic packaging device, the pre-plastic packaging device sequentially comprises a pushing mechanism, a to-be-packaged limiting mechanism, a compressing mechanism and a film sleeving mechanism. A first blocking piece and a second blocking piece which are used for blocking towel rolls are sequentially arranged at the lower end of the inclined rail in the rail direction from bottom to top so that the towel rolls can be conveyed to the to-be-packaged station one by one. The film sleeving mechanism comprises arc-shaped bag opening expansion pieces located on the two sides of the rear section of the cylindrical compression part. The bag opening expanding pieces are driven to be radially closed or expanded and separated, through combination of the automatic discharging device and the plastic packaging device, the full-automatic process from automatic discharging of towel rolls to plastic packaging is achieved, the production efficiency is remarkably improved, sleeving of plastic packaging film sleeves becomes simpler and more convenient through the film sleeving mechanism, and the production efficiency is improved. And meanwhile, a semi-finished product subjected to pre-plastic packaging can enter the next plastic packaging procedure more easily.

Description

Technical Field

[0001] The utility model relates to a towel cloth packaging device, in particular to an automatic plastic sealing packaging device for a disposable tearable towel roll, which can improve the packaging efficiency of the towel roll. Background Art

[0002] The packaging form of towel rolls usually refers to the towels being rolled into a certain shape and then packaged with packaging materials for easy storage, transportation and sales. The following are several common forms of towel roll packaging: Roll packaging: The towels are rolled into a cylinder, and both ends can be open or closed. This packaging form is simple and easy to stack and store. Plastic packaging: After the towel rolls are rolled into a cylinder, they are packaged with plastic film, and the packaging material is fixed to the towels through heat sealing or shrink film technology to form a sealed package.

[0003] The packaging equipment of roll-type fiber textile cloth with announcement number CN219545268U includes a first cylinder and a second cylinder, the first inner cavity is trumpet-shaped, the second inner cavity is cylindrical, the first inner cavity and the second inner cavity are connected to form a compression channel; the roll-type fiber textile cloth is loaded into a tubular plastic film sleeved on the front end of the second cylinder through the compression channel, and both end surfaces of the roll-type fiber textile cloth are located inside the end portions of the tubular plastic film on the corresponding sides; the hot air device blows hot air to the two end portions of the tubular plastic film, so that the two end portions of the tubular plastic film are respectively contracted on the end surfaces of the roll-type textile cloth to form contraction edges.

[0004] The device discloses a plastic sealing packaging device for towel cloth, but the feeding of the towel cloth and the assembly of the tubular plastic film are both done manually, the production efficiency is low, and the cleanliness and safety are difficult to be guaranteed. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide an automatic plastic sealing packaging device for disposable tearable towel rolls which can automatically drop materials. The device can realize automatic and rapid packaging of towel rolls, reducing the tediousness and errors of manual operation.

[0006] The technical solution adopted by the utility model to solve the above technical problems is: an automatic pre-plastic sealing packaging device for disposable tearable towel rolls, including an automatic blanking device and a pre-plastic sealing device;

[0007] The pre-plastic sealing device comprises a pushing mechanism, a to-be-packaged limiting mechanism, a compression mechanism and a film sleeve mechanism in sequence;

[0008] The to-be-packaged position limiting mechanism comprises an arc-shaped position limiting wall, the side of which is open toward the automatic blanking device, forming a to-be-packaged station with a feed port;

[0009] The automatic material dropping device comprises an inclined track for conveying the towel rolls placed horizontally one by one, and the lower end of the inclined track is connected to the station to be packaged;

[0010] The lower end of the inclined track is provided with a first blocking member and a second blocking member for blocking the towel roll in sequence from bottom to top along the track direction;

[0011] The first blocking member and the second blocking member are both movable to have two modes, namely, blocking and releasing. The first blocking member and the second blocking member switch modes to allow the towel rolls to be transported to the to-be-packed station one by one.

[0012] The compression mechanism comprises a cylindrical compression part, the cylindrical compression part has a compression chamber with a gradually decreasing inner diameter, and the compression chamber is connected to the station to be packaged;

[0013] The pushing mechanism is used to push the towel roll on the to-be-packaged station through the compression chamber into the plastic film sleeve on the film sleeve mechanism;

[0014] The film sleeve mechanism comprises arc-shaped bag opening expansion pieces located on both sides of the rear section of the cylindrical compression part; the bag opening expansion pieces are driven to radially close or expand and separate;

[0015] The bag opening expansion piece enters the mouth of the plastic film sleeve and expands and separates to expand the mouth of the plastic film sleeve in a circular shape, making it easy for the towel roll to enter; the bag opening expansion piece is radially closed, and the mouth of the plastic film sleeve is released and detached from the bag opening expansion piece.

[0016] The preferred technical solution adopted by the utility model to solve the above technical problems is: the first blocking member and the second blocking member are both arranged above the inclined track perpendicular to the inclined track;

[0017] The first blocking member and the second blocking member move up and down to switch the mode;

[0018] In the initial state, the first blocking member is in a blocking mode to keep a towel roll at a first position at the lower end of the inclined track, and the second blocking member is in a blocking mode to keep a towel roll at a second position adjacent to and above the first position;

[0019] During the switching process, when the first blocking member switches to the release mode, the towel roll at the first position rolls to the to-be-packed station by its own weight;

[0020] When the first blocking member switches to the blocking mode again, the second blocking member switches to the releasing mode, and the towel roll at the second position rolls to the first position and is held by the first blocking member; at the same time, the towel cloths arranged on the inclined track roll to the corresponding next position in sequence.

[0021] The preferred technical solution adopted by the utility model to solve the above technical problems is: a mounting frame is provided at the lower end of the inclined track, and the mounting frame includes two side frames and a crossbeam;

[0022] Two vertical brackets are arranged at the front and rear of the cross beam, and the first blocking member and the second blocking member are respectively arranged at the output ends of the longitudinal cylinders corresponding to the vertical brackets.

[0023] The preferred technical solution adopted by the utility model to solve the above technical problems is: the vertical bracket is provided with a static electricity removal device for eliminating static electricity on the surface of the towel roll;

[0024] The vertical bracket is a metal bracket, the metal bracket is connected to a ground wire, and the first blocking member and the second blocking member are electrically connected to the corresponding vertical bracket;

[0025] When the first blocking member and the second blocking member contact the surface of the towel roll, the static electricity on the surface is grounded through the metal frame to achieve static electricity elimination.

[0026] The preferred technical solution adopted by the utility model to solve the above technical problems is: the pre-plastic packaging device is arranged on a frame, and the frame is provided with a sliding seat driven by a first transverse cylinder;

[0027] The sliding seat is provided with a second transverse cylinder, and the second transverse cylinder is connected to and drives the bag opening expansion piece;

[0028] After the second transverse cylinder drives the corresponding bag opening expansion pieces inwardly to close the two bag opening expansion pieces radially, the first transverse cylinder drives the slider to move horizontally in a direction away from the plastic film sleeve.

[0029] The technical solution adopted by the utility model to solve the above technical problems is: an automatic pre-plastic sealing packaging device for disposable tearable towel rolls, including an automatic blanking device and a pre-plastic sealing device;

[0030] The pre-plastic sealing device comprises a pushing mechanism, a to-be-packaged limiting mechanism, a compression mechanism and a film sleeve mechanism in sequence;

[0031] The to-be-packaged position limiting mechanism comprises an arc-shaped position limiting wall, the side of which is open toward the automatic blanking device, forming a to-be-packaged station with a feed port;

[0032] The automatic material dropping device comprises an inclined track for conveying the towel rolls placed horizontally one by one, and the lower end of the inclined track is connected to the station to be packaged;

[0033] The lower end of the inclined track is provided with a first blocking member and a second blocking member for blocking the towel roll in sequence from bottom to top along the track direction;

[0034] The first blocking member and the second blocking member are both movable to have two states of blocking and releasing; the first blocking member and the second blocking member switch states alternately so that the towel rolls are transported to the to-be-packed station one by one;

[0035] The first blocking member allows a gap to be formed between the towel roll on the to-be-packed station and the adjacent towel rolls;

[0036] The pushing mechanism pushes the towel roll on the to-be-packaged station through the compression chamber into the plastic film sleeve on the film sleeve mechanism.

[0037] The preferred technical solution adopted by the utility model to solve the above technical problems is: the compression mechanism includes a cylindrical compression part, the cylindrical compression part has a compression chamber with a gradually decreasing inner diameter, and the compression chamber is connected to the station to be packaged;

[0038] The pushing mechanism is used to push the towel roll on the to-be-packaged station through the compression chamber into the plastic film sleeve on the film sleeve mechanism;

[0039] The film sleeve mechanism comprises arc-shaped bag opening expansion pieces located on both sides of the rear section of the cylindrical compression part; the bag opening expansion pieces are driven to radially close or expand and separate;

[0040] The bag opening expansion piece enters the mouth of the plastic film sleeve and expands and separates to expand the mouth of the plastic film sleeve in a circular shape, making it easy for the towel roll to enter; the bag opening expansion piece is radially closed, and the mouth of the plastic film sleeve is released and detached from the bag opening expansion piece.

[0041] The preferred technical solution adopted by the utility model to solve the above technical problems is: a mounting frame is provided above the lower end of the inclined track, and the mounting frame includes two side frames and a crossbeam;

[0042] Two vertical brackets are arranged at the front and rear of the crossbeam, and the first blocking member and the second blocking member are respectively arranged at the output ends of the longitudinal cylinders corresponding to the vertical brackets;

[0043] The first blocking member and the second blocking member are both arranged above the inclined track perpendicular to the inclined track;

[0044] The first blocking member and the second blocking member move up and down to switch the mode;

[0045] In the initial state, the first blocking member is in a blocking mode to keep a towel roll at a first position at the lower end of the inclined track, and the second blocking member is in a blocking mode to keep a towel roll at a second position adjacent to and above the first position;

[0046] During the switching process, when the first blocking member switches to the release mode, the towel roll at the first position rolls to the to-be-packed station by its own weight;

[0047] When the first blocking member switches to the blocking mode again, the second blocking member switches to the releasing mode, and the towel roll at the second position rolls to the first position and is held by the first blocking member; at the same time, the towel cloths arranged on the inclined track roll to the corresponding next position in sequence.

[0048] The technical solution adopted by the utility model to solve the above technical problems is: an automatic pre-plastic sealing packaging device for disposable tearable towel rolls, characterized in that: it includes an automatic blanking device and a pre-plastic sealing device;

[0049] The pre-plastic sealing device comprises a pushing mechanism, a to-be-packaged limiting mechanism, a compression mechanism and a film sleeve mechanism in sequence;

[0050] The to-be-packaged position limiting mechanism comprises an arc-shaped position limiting wall, the side of which is open toward the automatic blanking device, forming a to-be-packaged station with a feed port;

[0051] The automatic material dropping device comprises an inclined track for conveying the towel rolls placed horizontally one by one, the lower end of the inclined track docks with the station to be packaged and conveys the towel rolls one by one to the station to be packaged;

[0052] The compression mechanism comprises a cylindrical compression part, the cylindrical compression part has a compression chamber with a gradually decreasing inner diameter, and the compression chamber is connected to the station to be packaged;

[0053] The pushing mechanism is used to push the towel roll on the to-be-packaged station through the compression chamber into the plastic film sleeve on the film sleeve mechanism;

[0054] The film sleeve mechanism comprises arc-shaped bag opening expansion pieces located on both sides of the rear section of the cylindrical compression part; the bag opening expansion pieces are driven to radially close or expand and separate;

[0055] The bag opening expansion piece enters the mouth of the plastic film sleeve and expands and separates to expand the mouth of the plastic film sleeve in a circular shape, making it easy for the towel roll to enter; the bag opening expansion piece is radially closed, and the mouth of the plastic film sleeve is released and detached from the bag opening expansion piece.

[0056] The preferred technical solution adopted by the utility model to solve the above technical problems is: the lower end of the inclined track is provided with a first blocking member and a second blocking member for blocking the towel roll in sequence from bottom to top along the track direction;

[0057] The first blocking member and the second blocking member are both movable to have two modes: blocking and releasing;

[0058] In the initial state, the first blocking member is in a blocking mode to keep a towel roll at a first position at the lower end of the inclined track, and the second blocking member is in a blocking mode to keep a towel roll at a second position adjacent to and above the first position;

[0059] During the switching process, when the first blocking member switches to the release mode, the towel roll at the first position rolls to the to-be-packed station by its own weight;

[0060] When the first blocking member switches to the blocking mode again, the second blocking member switches to the releasing mode, and the towel roll at the second position rolls to the first position and is held by the first blocking member; at the same time, the towel cloths arranged on the inclined track roll to the corresponding next position in sequence.

[0061] Compared with the prior art, the advantages of the utility model are:

[0062] 1. Through the combination of automatic blanking device and plastic sealing packaging device, the equipment realizes the fully automated process from automatic blanking of towel rolls to plastic sealing packaging, which significantly improves production efficiency. The automated process reduces the direct contact between workers and mechanical equipment and reduces safety risks in the workplace.

[0063] The switching mechanism of the first blocking member and the second blocking member ensures the continuous flow of the towel rolls on the inclined track, avoids production interruptions, and maintains the continuity of the production line.

[0064] 3. The film sleeve mechanism makes it easier and more convenient to put on the plastic film sleeve. It also makes it easier for the semi-finished products after pre-plastic sealing to enter the next plastic sealing process, which is conducive to the design of full-line automation and improves processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0065] The present invention will be described in further detail below in conjunction with the accompanying drawings and preferred embodiments, but those skilled in the art will appreciate that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be used as a limitation on the scope of the present invention. In addition, unless otherwise specified, the drawings are only schematically representing the composition or structure of the described object and may contain exaggerated displays, and the drawings are not necessarily drawn to scale.

[0066] Figure 1 Schematic diagram of the automatic pre-plastic packaging equipment for disposable tearable towel rolls Figure 1 ;

[0067] Figure 2 Schematic diagram of the automatic pre-plastic packaging equipment for disposable tearable towel rolls Figure 2 ;

[0068] Figure 3Schematic diagram of the automatic pre-plastic packaging equipment for disposable tearable towel rolls Figure 3 ;

[0069] Figure 4 It is a schematic diagram of the initial state of an empty station to be packaged in an automated pre-plastic packaging device;

[0070] Figure 5 It is a schematic diagram of a towel roll in the first position in the automated pre-plastic packaging equipment falling into an empty station to be packaged;

[0071] Figure 6 This is a schematic diagram of the state of waiting for pre-plastic sealing after the material is blanked in the automated pre-plastic sealing packaging equipment;

[0072] Figure 7 It is a schematic diagram of a towel roll on a station to be packaged in an automated pre-plastic packaging device being pushed to a compression mechanism;

[0073] Figure 8 It is a schematic diagram of the closed state of the bag opening expansion piece in the automated pre-plastic packaging equipment;

[0074] Fig. 9 It is a schematic diagram of the expansion and separation state of the bag opening expansion piece in the automated pre-plastic packaging equipment;

[0075] Fig.10 This is a schematic diagram of the bag opening expansion piece in the automated pre-plastic packaging equipment being closed and retracted. DETAILED DESCRIPTION

[0076] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It will be appreciated by those skilled in the art that these descriptions are merely illustrative and exemplary and should not be construed as limiting the scope of protection of the present invention.

[0077] It should be noted that like reference numerals denote similar items in the following drawings, and thus, once an item is defined in one drawing, it will not be further defined or explained in the subsequent drawings.

[0078] In the description of the present utility model, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "inside", "outside" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or the directions or positional relationships in which the utility model product is usually placed when in use, which are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model. "First" and "second" are only for the purpose of making the description easier to understand, without any other directional meaning, and cannot be used as a limitation on the present utility model.

[0079] like Figure 1-7 As shown, the automatic pre-plastic packaging equipment of the disposable tearable towel roll M is used to compress the towel roll M into the cylindrical plastic film sleeve N for pre-plastic sealing. After pre-plastic sealing, both end faces of the towel roll M are located inside the end of the plastic film sleeve N on the corresponding side, and there is a heat shrinking distance between the end face of the towel roll M and the end of the plastic film sleeve N for heat shrinkage to form a heat shrinking distance wrapped around the end face of the towel roll M.

[0080] like Figure 1 As shown, the automatic pre-plastic packaging equipment for disposable tearable towel roll M includes an automatic blanking device 100 and a pre-plastic packaging device 200. The pre-plastic packaging device 200 includes a pushing mechanism 1, a to-be-packaged position limiting mechanism 2, a compression mechanism 3 and a film covering mechanism 4 in sequence.

[0081] like Figure 2 As shown, the to-be-packaged position limiting mechanism 2 comprises an arc-shaped position limiting wall 21, the side of which is open toward the automatic blanking device 100, forming a to-be-packaged station 20 with a feed port. The automatic blanking device 100 comprises an inclined track 5 for conveying the horizontally placed towel rolls M one by one, and the lower end of the inclined track 5 is docked with the to-be-packaged station 20 and conveys the towel rolls M to the to-be-packaged station 20 one by one.

[0082] like Figure 2 As shown, the compression mechanism 3 includes a cylindrical compression portion 31 , which has a compression cavity with a gradually decreasing inner diameter, and the compression cavity is connected to the to-be-packaged station 20 .

[0083] like Figure 6-7 As shown, the pushing mechanism 1 is used to push the towel roll M on the to-be-packaged station 20 through the compression chamber into the plastic film sleeve N on the film sleeve mechanism 4 .

[0084] Through the close combination of the automatic blanking device 100 and the pre-plastic sealing device 200, the equipment can realize the automatic conveying, accurate positioning and rapid packaging of the towel rolls M. It realizes the full automation operation from blanking to film covering, reduces the tediousness and error of manual operation, and improves production safety and production efficiency.

[0085] like Figure 2 As shown, in this embodiment, the inclined track 5 is designed so that the towel roll M slides downward due to gravity, and the conveying track can be extended within a limited plane area, effectively saving space. The lower end of the inclined track 5 is provided with a first blocking member 6 and a second blocking member 7 for blocking the towel roll M in sequence from bottom to top along the track direction. The first blocking member 6 and the second blocking member 7 are both movable to have two modes of blocking and releasing. The first blocking member 6 and the second blocking member 7 switch modes to allow the towel rolls M to be transported one by one to the packaging station 20.

[0086] The arrangement of the first blocking member 6 and the second blocking member 7 can flexibly control the conveying rhythm or speed of the towel roll M, thereby ensuring the stability and accuracy of the towel roll M during the conveying process, thereby forming a good transition connection with subsequent processes and improving production efficiency.

[0087] In order to further enhance the convenience of production, improve the degree of automation and production efficiency, in this embodiment, a film mechanism 4 is arranged at the rear side of the compression mechanism 3 for sleeve-connecting the plastic film sleeve N.

[0088] like Figure 4-10 As shown, the film sleeve mechanism 4 includes a bag opening expansion piece 41 located on both sides of the rear section of the cylindrical compression part 31. The cross section of the bag opening expansion piece 41 is an arc coaxial with the cylindrical compression part 31. The bag opening expansion piece 41 is driven to close radially or expand and separate. The bag opening expansion piece 41 enters the mouth of the plastic film sleeve N and expands and separates to expand the mouth of the plastic film sleeve N in a circular shape, which is convenient for the towel roll M to enter. The bag opening expansion piece 41 closes radially, and the mouth of the plastic film sleeve N is released and detached from the bag opening expansion piece 41. Preferably, the movement of the bag opening expansion piece 41 is driven by two second transverse cylinders.

[0089] The film sleeve mechanism 4 makes it easier and more convenient to sleeve the plastic film sleeve N, and also makes it easier for the semi-finished product after pre-plastic sealing to enter the next plastic sealing process, which is conducive to the design of full-line automation and improves processing efficiency.

[0090] like Figure 2 , 6 As shown, the first blocking member 6 and the second blocking member 7 are both disposed above the inclined track 5 and extend perpendicularly to the inclined track 5. Further, there is a distance between the first blocking member 6 and the second blocking member 7 that is approximately equal to the diameter of the towel roll M. The first blocking member 6 is positioned so that there is a space between the towel roll M on the to-be-packed station 20 and the adjacent towel roll M.

[0091] Based on this air distance, when the pushing mechanism 1 pushes the towel roll M on the packaging station 20 to the compression mechanism 3, the towel roll M on the packaging station 20 will not be disturbed by the adjacent towel roll M due to mutual friction, thereby ensuring the smooth operation and preventing the outer winding structure of the two towel rolls M from being damaged due to friction.

[0092] In this embodiment, the positions of the first blocking member 6 and the second blocking member 7 along the extension direction of the inclined track 5 are fixed, while in another embodiment, the first blocking member 6 and the second blocking member 7 are movably arranged along the extension direction of the inclined track 5. This arrangement enables the first blocking member 6 and the second blocking member 7 to move along the inclined track 5 and adapt to towel rolls M of different diameters by adjusting the descending amplitude, thereby improving the versatility and flexibility of the device.

[0093] like Figure 2-3 As shown, the first blocking member 6 and the second blocking member 7 are driven by the driving mechanism to switch modes up and down. When the blocking member descends and is located in front of the position of the towel roll M, it limits the towel roll M from sliding down on the inclined track 5. When the blocking member rises, the position restriction of the towel roll M is released and switched to the release mode, and the towel roll M can slide down the inclined track 5 to the next position.

[0094] The specific mode switching method is as follows: Figure 4 As shown, in the initial state, the first blocking member 6 is in the blocking mode to keep a towel roll M at the first position v1 at the lower end of the inclined track 5, and the second blocking member 7 is in the blocking mode to keep a towel roll M at the second position v2 adjacent to and above the first position v1.

[0095] like Figure 5 As shown, during the switching process, when the first blocking member 6 switches to the release mode, the towel roll M at the first position v1 rolls to the packaging station 20 by its own weight.

[0096] When the first blocking member 6 switches to the blocking mode again, the second blocking member 7 switches to the releasing mode, and the towel roll M at the second position v2 rolls to the first position v1 and is held by the first blocking member 6. At the same time, the towels arranged on the inclined track 5 roll to the corresponding next position in sequence. Then the second blocking member 7 switches to the blocking mode again to restore to the initial mode, as shown in FIG. Figure 6 The first blocking member 6 and the second blocking member 7 switch states alternately, so that the towel rolls M are transported to the packaging station 20 one by one.

[0097] like Figure 1 As shown, a mounting frame 51 is provided at the lower end of the inclined track 5, and the mounting frame 51 includes two side frames a and a crossbeam b. The vertical frame a includes a vertical section a1 and an inclined section a2 whose upper side is perpendicular to the inclined track 5, and the inclined section a2 is narrow at the bottom and wide at the top, and the crossbeam b is horizontally connected to the upper ends of the two inclined sections a2. The width of the crossbeam b is greater than the diameter of a towel roll M, so that it not only provides a position for installing the first blocking member 6 and the second blocking member 7, but also plays a role in dust blocking.

[0098] like Figure 2 As shown, the cross beam b is provided with two vertical brackets c along the extension direction of the track, each vertical bracket c is provided with a longitudinal cylinder 8 with an output end facing downward, and the first blocking member 6 and the second blocking member 7 are respectively arranged at the output ends of the longitudinal cylinder 8 of the corresponding vertical bracket c.

[0099] Preferably, the vertical support c is provided with an anti-static device for eliminating static electricity on the surface of the towel roll M, which can effectively eliminate static electricity on the surface of the towel roll M, avoid the influence of static electricity on the packaging process and product quality, and ensure the stability and reliability of the packaging.

[0100] In one embodiment, the static electricity removal device is an ion blower. In another embodiment, the vertical bracket c is a metal frame, the metal frame is connected to the ground wire, and the first blocking member 6 and the second blocking member 7 are electrically connected to the corresponding vertical bracket c. When the first blocking member 6 and the second blocking member 7 contact the surface of the towel roll M, the surface static electricity is grounded through the metal frame to achieve static electricity elimination.

[0101] Preferably, if Figure 1-3 As shown, the pre-plastic packaging device 200 is arranged on the frame 300, and the arc-shaped limiting wall 21 and the cylindrical compression part 31 are an integral structure. The frame 300 is provided with a plurality of arc-shaped support frames 9 distributed at intervals, and the integral structure formed by the arc-shaped limiting wall 21 and the cylindrical compression part 31 is supported by the arc-shaped support frames 9.

[0102] Among them, Figure 6-7 As shown, the cylindrical compression portion 31 includes a constant diameter section 311 and a tapered section 312 . The inner cavity diameters of the constant diameter section 311 are equal, and the inner cavity diameter of the tapered section 312 gradually decreases from back to front, and the inner cavity starting end of the tapered section 312 is continuous with the inner cavity of the constant diameter section 311 .

[0103] like Figure 4 As shown, the pushing mechanism 1 includes a pen-type cylinder 101 and a pressure plate 102 connected to the telescopic end of the pen-type cylinder, and the pressure plate moves forward to push the towel roll.

[0104] like Figure 4-10 As shown, the working steps of pre-plastic sealing of this towel roll M are:

[0105] Step 1: If Figure 8 As shown, the bag opening expansion pieces 41 are driven to close radially, so that the circle of each cross section of the knot structure formed by the two bag opening expansion pieces 41 presents a shape in which the diameter gradually decreases from the back to the front, so as to guide the plastic film sleeve N to be inserted.

[0106] Step 2: If Figure 6 , 9 As shown, one end of the plastic film sleeve N is sleeved on the front end of the bag opening expansion piece 41, and then the bag opening expansion piece 41 is driven to expand and separate radially, so that the outer diameter of the structure where the bag opening expansion piece 41 is located is expanded, and the bag opening of the plastic film sleeve N is expanded and supported;

[0107] Step 3: If Figure 6-7As shown, the pushing mechanism 1 presses the towel roll M with an initial diameter larger than the diameter of the front section of the inner cavity of the necking section 312 at the to-be-packed station 20 from the rear end of the equal-diameter section 311 into the compression cavity of the cylindrical compression portion 31. Since the inner cavity of the necking section 312 gradually decreases from the back to the front, it is easy to load the loose towel roll M with a large diameter, and the outer diameter of the towel roll M is gradually compressed, and the distance between adjacent cloth layers becomes smaller, so that the entire towel roll M becomes stronger.

[0108] Step 4: The towel roll M is continuously pressed forward until the towel roll M enters the plastic film sleeve N and the rear end of the towel roll M leaves the necking section 312. At this time, both end surfaces of the towel roll M are located in the end of the plastic film sleeve N on the corresponding side.

[0109] Step 5: If Figure 4 , 8 As shown in 10, the bag opening expansion piece 41 is then closed, the bag opening of the plastic film sleeve N is separated from the plastic film sleeve N, the plastic film sleeve N and the towel roll M therein are removed, the pre-plastic sealing is completed, and the next heat shrinking process is entered.

[0110] like Figure 1 , 3 As shown in Figures 4 and 8, in this embodiment, a horizontal support plate 12 is provided on the rear side of the frame 300. The horizontal support plate 12 is located on the rear side of the cylindrical compression portion 31 and below the plastic film sleeve N, thereby supporting the towel roll M during the process of pressing it into the plastic film sleeve N.

[0111] Preferably, the horizontal support plate 12 is hinged with the frame 300 and driven by a cylinder or motor power, and can complete the downward turning action and horizontal supporting action within a certain period. After the above step 4, the horizontal support plate automatically turns down, and the towel roll M installed in the plastic film sleeve N is subjected to downward gravity. Since there is little axial interference between the bag opening and the bag opening expansion piece 41 or the shrinking section 312 and the plastic film sleeve N, and they are radially separated from each other, when the towel roll M slides down due to gravity, the plastic film sleeve N automatically moves away from the film sleeve mechanism 4 and the compression mechanism 3, and the pre-plasticized towel roll M falls and enters the next process along the corresponding conveying track.

[0112] In another preferred embodiment, the combination Figure 8-10As shown, the pre-plastic sealing device 200 is arranged on a frame 300, and a sliding seat driven by a first transverse cylinder is provided on the frame 300. A second transverse cylinder 11 is provided on the sliding seat, and the second transverse cylinder is connected to and drives the bag opening expansion piece 41. After the second transverse cylinder drives the corresponding bag opening expansion piece 41 inward to make the two bag opening expansion pieces 41 radially close, the first transverse cylinder drives the slider to move horizontally in a direction away from the plastic sealing film sleeve N. In the first state, the front end of the bag opening expansion piece 41 exceeds the front end of the cylindrical compression part 31, and in this state, the bag opening expansion piece 41 is radially closed or expanded and separated. In the mode of radially closing the bag opening expansion piece 41, the bag opening expansion piece 41 moves relative to each other under the drive of the first transverse cylinder, so that the bag opening expansion piece 41 is axially away from the bag opening of the plastic sealing film sleeve N, so that it is more convenient for the towel roll M after pre-plastic sealing to enter the next process.

[0113] The automatic plastic sealing packaging equipment for disposable tearable towel rolls provided by the utility model is introduced. The principle and implementation method of the utility model are explained by using specific examples in this article. The description of the above embodiments is only used to help understand the utility model and its core ideas. It should be pointed out that for ordinary technicians in this technical field, the utility model can also be improved and modified without departing from the principle of the utility model, and these improvements and modifications also fall within the protection scope of the claims of the utility model.

Claims

1. Automatic pre-plastic packaging equipment for disposable tearable towel rolls, characterized by: Including automatic blanking device and pre-plastic sealing device; The pre-plastic sealing device comprises a pushing mechanism, a to-be-packaged limiting mechanism, a compression mechanism and a film sleeve mechanism in sequence; The to-be-packaged position limiting mechanism forms a to-be-packaged station with a feed port; the automatic material-dropping device comprises an inclined track for conveying the horizontally placed towel rolls one by one, and the lower end of the inclined track is docked with the to-be-packaged station; The lower end of the inclined track is provided with a first blocking member and a second blocking member for blocking the towel rolls in sequence from bottom to top along the track direction; the first blocking member and the second blocking member switch between blocking and releasing modes so that the towel rolls are transported one by one to the to-be-packed station; The compression mechanism comprises a cylindrical compression part, the cylindrical compression part has a compression chamber with a gradually decreasing inner diameter, and the compression chamber is connected to the station to be packaged; The pushing mechanism is used to push the towel roll on the to-be-packaged station through the compression chamber into the plastic film sleeve on the film sleeve mechanism; The film sleeve mechanism comprises arc-shaped bag opening expansion pieces located on both sides of the rear section of the cylindrical compression part; the bag opening expansion pieces are driven to radially close or expand and separate; The bag opening expansion piece is used to expand and open the mouth of the plastic film sleeve when it is expanded and separated; the bag opening expansion piece is radially closed, and the mouth of the plastic film sleeve is released and separated from the bag opening expansion piece.

2. The automatic pre-plastic packaging equipment for disposable tearable towel rolls according to claim 1, characterized in that: The first blocking member and the second blocking member are both arranged above the inclined track perpendicular to the inclined track; The first blocking member and the second blocking member move up and down to switch the mode; In the initial state, the first blocking member is in a blocking mode to keep a towel roll at a first position at the lower end of the inclined track, and the second blocking member is in a blocking mode to keep a towel roll at a second position adjacent to and above the first position; During the switching process, when the first blocking member switches to the release mode, the towel roll at the first position rolls to the to-be-packed station by its own weight; When the first blocking member switches to the blocking mode again, the second blocking member switches to the releasing mode, and the towel roll at the second position rolls to the first position and is held by the first blocking member; at the same time, the towel cloths arranged on the inclined track roll to the corresponding next position in sequence.

3. The automatic pre-plastic packaging equipment for disposable tearable towel rolls according to claim 1, characterized in that: A mounting frame is provided at the lower end of the inclined track, and the mounting frame includes two side frames and a crossbeam; Two vertical brackets are arranged at the front and rear of the cross beam, and the first blocking member and the second blocking member are respectively arranged at the output ends of the longitudinal cylinders corresponding to the vertical brackets.

4. The automatic pre-plastic packaging equipment for disposable tearable towel rolls according to claim 3 is characterized in that: The vertical support is provided with a static elimination device for eliminating static electricity on the surface of the towel roll; The vertical bracket is a metal bracket, the metal bracket is connected to a ground wire, and the first blocking member and the second blocking member are electrically connected to the corresponding vertical bracket; When the first blocking member and the second blocking member contact the surface of the towel roll, the static electricity on the surface is grounded through the metal frame to achieve static electricity elimination.

5. The automatic pre-plastic packaging equipment for disposable tearable towel rolls according to claim 1, characterized in that: The pre-plastic sealing device is arranged on a frame, and a sliding seat driven by a first transverse cylinder is arranged on the frame; The sliding seat is provided with a second transverse cylinder, and the second transverse cylinder is connected to and drives the bag opening expansion piece; After the second transverse cylinder drives the corresponding bag opening expansion pieces inwardly to close the two bag opening expansion pieces radially, the first transverse cylinder drives the slider to move horizontally in a direction away from the plastic film sleeve.

6. Automatic pre-plastic packaging equipment for disposable tearable towel rolls, characterized by: Including automatic blanking device and pre-plastic sealing device; The pre-plastic sealing device comprises a pushing mechanism, a to-be-packaged limiting mechanism, a compression mechanism and a film sleeve mechanism in sequence; The to-be-packaged position limiting mechanism comprises an arc-shaped position limiting wall, the side of which is open toward the automatic blanking device, forming a to-be-packaged station with a feed port; The automatic material dropping device comprises an inclined track for conveying the towel rolls placed horizontally one by one, and the lower end of the inclined track is connected to the station to be packaged; The lower end of the inclined track is provided with a first blocking member and a second blocking member for blocking the towel roll in sequence from bottom to top along the track direction; The first blocking member and the second blocking member are both movable to have two states of blocking and releasing; the first blocking member and the second blocking member switch states alternately so that the towel rolls are transported to the to-be-packed station one by one; The first blocking member allows a gap to be formed between the towel roll on the to-be-packed station and the adjacent towel rolls; The pushing mechanism pushes the towel roll on the to-be-packaged station into the plastic film sleeve on the film sleeve mechanism through the compression mechanism.

7. The automatic pre-plastic packaging equipment for disposable tearable towel rolls according to claim 6, characterized in that: The compression mechanism comprises a cylindrical compression part, the cylindrical compression part has a compression chamber with a gradually decreasing inner diameter, and the compression chamber is connected to the station to be packaged; The pushing mechanism is used to push the towel roll on the to-be-packaged station through the compression chamber into the plastic film sleeve on the film sleeve mechanism; The film sleeve mechanism comprises arc-shaped bag opening expansion pieces located on both sides of the rear section of the cylindrical compression part; the bag opening expansion pieces are driven to radially close or expand and separate; The bag opening expansion piece enters the mouth of the plastic film sleeve and expands and separates to expand the mouth of the plastic film sleeve in a circular shape, making it easy for the towel roll to enter; the bag opening expansion piece is radially closed, and the mouth of the plastic film sleeve is released and detached from the bag opening expansion piece.

8. The automatic pre-plastic packaging equipment for disposable tearable towel rolls according to claim 6, characterized in that: A mounting frame is provided above the lower end of the inclined track, and the mounting frame includes two side frames and a crossbeam; Two vertical brackets are arranged at the front and rear of the cross beam, and the first blocking member and the second blocking member are respectively arranged at the output ends of the longitudinal cylinders corresponding to the vertical brackets; The first blocking member and the second blocking member are both arranged above the inclined track perpendicular to the inclined track; The first blocking member and the second blocking member move up and down to switch the mode; In the initial state, the first blocking member is in a blocking mode to keep a towel roll at a first position at the lower end of the inclined track, and the second blocking member is in a blocking mode to keep a towel roll at a second position adjacent to and above the first position; During the switching process, when the first blocking member switches to the release mode, the towel roll at the first position rolls to the to-be-packed station by its own weight; When the first blocking member switches to the blocking mode again, the second blocking member switches to the releasing mode, and the towel roll at the second position rolls to the first position and is held by the first blocking member; at the same time, the towel cloths arranged on the inclined track roll to the corresponding next position in sequence.

9. Automated pre-plastic packaging equipment for disposable tearable towel rolls, characterized by: Including automatic blanking device and pre-plastic sealing device; The pre-plastic sealing device comprises a pushing mechanism, a to-be-packaged limiting mechanism, a compression mechanism and a film sleeve mechanism in sequence; The to-be-packaged position limiting mechanism comprises an arc-shaped position limiting wall, the side of which is open toward the automatic blanking device, forming a to-be-packaged station with a feed port; The automatic material dropping device comprises an inclined track for conveying the towel rolls placed horizontally one by one, the lower end of the inclined track docks with the station to be packaged and conveys the towel rolls one by one to the station to be packaged; The compression mechanism comprises a cylindrical compression part, the cylindrical compression part has a compression chamber with a gradually decreasing inner diameter, and the compression chamber is connected to the station to be packaged; The pushing mechanism is used to push the towel roll on the to-be-packaged station through the compression chamber into the plastic film sleeve on the film sleeve mechanism; The film sleeve mechanism comprises arc-shaped bag opening expansion pieces located on both sides of the rear section of the cylindrical compression part; the bag opening expansion pieces are driven to radially close or expand and separate; The bag opening expansion piece enters the mouth of the plastic film sleeve and expands and separates to expand the mouth of the plastic film sleeve in a circular shape, making it easy for the towel roll to enter; the bag opening expansion piece is radially closed, and the mouth of the plastic film sleeve is released and detached from the bag opening expansion piece.

10. The automatic pre-plastic packaging equipment for disposable tearable towel rolls according to claim 9, characterized in that: The lower end of the inclined track is provided with a first blocking member and a second blocking member for blocking the towel roll in sequence from bottom to top along the track direction; The first blocking member and the second blocking member are both movable to have two modes: blocking and releasing; In the initial state, the first blocking member is in a blocking mode to keep a towel roll at a first position at the lower end of the inclined track, and the second blocking member is in a blocking mode to keep a towel roll at a second position adjacent to and above the first position; During the switching process, when the first blocking member switches to the release mode, the towel roll at the first position rolls to the to-be-packed station by its own weight; When the first blocking member switches to the blocking mode again, the second blocking member switches to the releasing mode, and the towel roll at the second position rolls to the first position and is held by the first blocking member; at the same time, the towel cloths arranged on the inclined track roll to the corresponding next position in sequence.

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