An automatic layer changing device for sheet irradiation production

Abstract

The present invention discloses an automatic layer-changing device for sheet irradiation production, comprising a frame, a sheet-feeding roller is arranged at one longitudinal end of the frame, and a roller assembly is also arranged at the same end; the roller assembly comprises fixed rollers and mobile rollers arranged alternately, a driving assembly is arranged at the other end of the frame, and each mobile roller is individually configured with a corresponding driving assembly; after the sheet is positioned by the sheet-feeding roller, it can pass through the gap between the fixed roller and the mobile roller in turn, and pass out from the same side of the sheet-feeding frame; both ends of the fixed roller are fixedly connected to the frame, and symmetrical mobile roller matching grooves are arranged on the side of the frame, and under the action of the driving assembly, both ends of the mobile roller can be longitudinally moved to the other end of the frame along the corresponding mobile roller matching grooves. The present invention can also realize automatic layer-changing of the frame during continuous sheet production, greatly reducing the number of operators entering the irradiation area, improving the accuracy of layer-changing, and effectively solving various risks caused by manual layer-changing at present.

Description

Technical Field

[0001] The invention belongs to the technical field of polyolefin foam material production equipment, and in particular relates to automatic layer-changing equipment for sheet material irradiation production. Background Art

[0002] Polyolefin foam materials need to go through an irradiation process during production, using high-energy electron beams to change the material structure and provide raw materials for subsequent processes. Semi-finished polyolefin foam materials are rolled sheets, which are irradiated and continuously produced by passing through rollers on the racks in the irradiation area. The high-energy electron beams generated by the irradiation equipment are vertically directed toward the sheets. Since different products require different irradiation energies, there are usually restrictions on the number of layers that different sheets pass through the racks.

[0003] When changing orders for products of different specifications, it involves changing the rack layers. The existing rack structure is as follows: Figures 1 to 3 As shown, since automatic layer change cannot be achieved, it is usually necessary to stop the machine until the radiation in the irradiation area is no longer harmful to the human body before entering the irradiation area for operation. The operator first cuts the continuous sheet in the irradiation area, and then passes the end of the sheet 44 through the sheet feed roller 22 and the fixed roller 33 on the frame 11. When the number of layers of the sheet meets the specified number of layers for product production, the end of the sheet is connected with rivets, and the machine is restarted for production after the operator leaves the irradiation area. The above operation has the following problems:

[0004] 1) When changing orders, the equipment is idle for a long time and cannot produce continuously, which affects the equipment capacity;

[0005] 2) Operators frequently enter and exit the irradiation area, causing personal injury and posing safety hazards;

[0006] 3) The rivet joint port may be scratched or broken during continuous production; operators may sometimes change the wrong number of layers when changing layers, resulting in abnormal batch production.

[0007] 4) When sheets of different specifications are produced, the required tension of the sheets will be inconsistent, the speed adjustment tension of the sheets in and out will lag behind, and the sheets on the rack will be stretched or relaxed and overlapped, resulting in abnormal product quality;

[0008] 5) The harsh ionizing radiation environment in the irradiation area will cause corrosion and damage to the rack transmission mechanism. Due to frequent manual layer replacement, the rack protection cover cannot be installed normally. Summary of the invention

[0009] In response to one or more of the above defects or improvement needs in the prior art, the present invention provides an automatic layer changing equipment for sheet irradiation production, which can realize automatic layer changing of the frame during continuous sheet production, avoiding long-term equipment stagnation and waiting for layer changing operation; greatly reducing the number of operators entering the irradiation area, avoiding safety hazards; effectively avoiding the risks of current manual layer changing due to roller scratches and sheet breakage; improving the accuracy of layer changing, avoiding batch abnormalities in irradiation quality caused by human operation; the sheet winding in the initial state can reduce the waste of sheets caused by equipment abnormalities.

[0010] To achieve the above object, the present invention provides an automatic layer changing device for sheet irradiation production, comprising a frame, a sheet feeding roller is arranged at one longitudinal end of the frame, and a roller assembly is also arranged at the same end;

[0011] The roller assembly comprises fixed rollers and movable rollers arranged alternately, a driving assembly is provided at the other end of the frame, and each movable roller is independently provided with a corresponding driving assembly; after being positioned by the sheet feeding roller, the sheet can sequentially pass through the gap between the fixed roller and the movable roller, and pass out from the same side of the frame as the sheet feeding side;

[0012] The two ends of the fixed roller are fixedly connected to the frame, and the side of the frame is provided with symmetrical moving roller matching grooves. Under the action of the driving component, the two ends of the moving roller can move longitudinally to the other end of the frame along the corresponding moving roller matching grooves.

[0013] As a further improvement of the present invention, the driving assembly includes a forward and reverse power motor, the gear of the forward and reverse power motor matches the middle gear on the power transmission cross bar, and is linked thereto; the lateral ends of the power transmission cross bar are provided with matching gears, which match the end racks, and the end racks are connected to one end of the moving roller traction rod, and the other end of the moving roller traction rod is connected to the moving roller.

[0014] As a further improvement of the present invention, the lateral end of the power transmission cross bar is fixed to the frame through a gear fixing member.

[0015] As a further improvement of the present invention, the frame is also provided with a plurality of groups of opposing photoelectric sensing elements, each group of photoelectric sensing elements corresponds to a group of sheets, and has signal transmission with a driving component that controls this group of sheets, for real-time fine-tuning of the tension of each layer of sheets.

[0016] As a further improvement of the present invention, the photoelectric sensing element has upper and lower limit positions, and each group of sheets is located between the upper and lower limit positions.

[0017] As a further improvement of the present invention, the photoelectric sensing element is arranged on both vertical sides of the matching groove of the moving roller.

[0018] As a further improvement of the present invention, a detachable radiation shield is provided on the periphery of the automatic layer-changing device, and a through hole is reserved on the top of the radiation shield for the radiation electron beam to pass through, and holes are reserved on the side for the entry and exit of the sheet.

[0019] As a further improvement of the present invention, in the roller combination, the first passing roller is the fixed roller, and the sheet passes around the bottom of the fixed roller.

[0020] As a further improvement of the present invention, in the roller combination, the first passing roller is the moving roller, and the sheet passes around the top of the moving roller.

[0021] In general, the above technical solution conceived by the present invention has the following beneficial effects compared with the prior art:

[0022] The automatic layer-changing equipment for sheet irradiation production of the present invention has a frame provided with a fixed roller and a moving roller that can slide along the matching groove of the moving roller, and the two rollers are alternately arranged on the frame, and each moving roller is connected with a traction rod at both ends of the lateral direction, the traction rod passes through the frame and a rack structure is provided at the end, and the driving component transmits power to the power transmission cross bar through the gear, and the gears at both ends of the power transmission cross bar cooperate with the rack structure at the end of the traction rod of the moving roller, and the reciprocating motion of the traction rod of the moving roller is realized by the forward and reverse rotation of the power motor, and finally the moving roller is driven to reciprocate in the matching groove of the moving roller of the frame, so that the left and right position of the moving roller is changed.

[0023] The automatic layer-changing equipment for sheet irradiation production of the present invention can also realize automatic layer-changing of the frame during continuous sheet production, avoiding long-term equipment stagnation and waiting for layer-changing operations; greatly reducing the number of operators entering the irradiation area, avoiding safety hazards; effectively avoiding the risks of current manual layer-changing due to roller scratches and sheet breakage; improving the accuracy of layer-changing, avoiding batch abnormalities in irradiation quality caused by human operation; the sheet winding in the initial state can reduce sheet waste caused by equipment abnormalities.

[0024] The automatic layer-changing equipment for sheet irradiation production of the present invention can effectively avoid irradiation abnormalities caused by inconsistent tension when sheets of different specifications are changed for production by arranging multiple groups of photoelectric sensors. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the structure of sheet irradiation production equipment in the prior art;

[0026] Figure 2 It is a schematic diagram of the structure of sheet material irradiation production equipment in the prior art;

[0027] Figure 3It is a schematic diagram of the sheet material irradiation production equipment structure in the prior art;

[0028] Figure 4 A schematic structural diagram of an automatic layer-changing device for sheet material irradiation production according to an embodiment of the present invention;

[0029] Figure 5 Schematic diagram of automatic layer changing equipment for sheet material irradiation production according to an embodiment of the present invention;

[0030] Figure 6 A schematic diagram of a photoelectric sensing component involved in an automatic layer-changing device for sheet material irradiation production according to an embodiment of the present invention;

[0031] Figure 7 A schematic diagram of a radiation shield involved in an automatic layer-changing device for sheet material irradiation production according to an embodiment of the present invention;

[0032] Figure 8 Schematic diagram of initial sheet threading and winding of an automatic layer changing device for sheet irradiation production according to an embodiment of the present invention;

[0033] Fig. 9 Schematic diagram of an automatic layer-changing device for sheet material irradiation production according to an embodiment of the present invention changing two layers of winding sheets;

[0034] Fig.10 Schematic diagram of automatic layer changing equipment for sheet material irradiation production according to an embodiment of the present invention changing four layers of winding sheets;

[0035] Fig.11 Schematic diagram of the automatic layer changing equipment for sheet material irradiation production according to the embodiment of the present invention changing six-layer winding.

[0036] In all the drawings, the same reference numerals represent the same technical features, specifically: 1-frame, 2-film feed roller, 3-fixed roller, 4-moving roller, 5-moving roller matching groove, 6-driving assembly, 7-photoelectric sensing element, 8-radiation shield; 601-forward and reverse power motor, 602-power transmission cross bar, 603-gear fixing part, 604-matching gear, 605-end rack, 606-moving roller traction rod. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0038] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0039] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0040] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0042] Figure 4 A schematic structural diagram of an automatic layer-changing device for sheet material irradiation production according to an embodiment of the present invention; Figure 5 Schematic diagram of automatic layer changing equipment for sheet irradiation production according to an embodiment of the present invention. Figure 4 and Figure 5As shown, the automatic layer changing equipment for sheet irradiation production of the present invention includes a frame 1 and a sheet feeding roller 2, a fixed roller 3, a moving roller 4, a moving roller matching groove 5, and a driving component 6 arranged on the frame 1.

[0043] Specifically, a film feed roller 2 is provided at one longitudinal end of the frame 1, and both ends of the film feed roller 2 are fixed on both sides of the frame. A roller assembly is also provided at the same longitudinal end of the frame 1, and the roller assembly includes alternately arranged fixed rollers 3 and movable rollers 4, and a driving component 6 is provided at the other end. After the sheet is positioned by the film feed roller 2, it can pass through the gap between the fixed roller 3 and the movable roller 4 in turn, and pass out from the same side of the frame 1 where the sheet is fed; both ends of the fixed roller 3 are fixedly connected to the frame 1, and symmetrical movable roller matching grooves 5 are provided on the side of the frame 1. Under the action of the driving component 6, both ends of the movable roller 4 can move longitudinally to the other end of the frame along the corresponding movable roller matching grooves 5.

[0044] Each moving roller 4 is independently equipped with a corresponding driving assembly 6, so that the reciprocating motions of the moving rollers 4 do not interfere with each other. The driving assembly 6 specifically includes a forward and reverse power motor 601, a power transmission crossbar 602, a gear fixing member 603, a matching gear 604, a terminal rack 605 and a moving roller traction rod 606. The forward and reverse power motor 601 has its own gear, which matches the middle gear on the power transmission cross bar 602. Under the action of the forward and reverse power motor 601, the middle gear can be driven to rotate, so that the power transmission cross bar 602 is linked with it; the two lateral ends of the power transmission cross bar 602 are provided with matching gears 604, which match the end rack 605, and the end rack 605 is connected to the moving roller traction rod 606 and extends out of the frame 1. One end of the moving roller traction rod 606 is fixed to the end rack 605, and the other end is connected to the end of the moving roller 4. Under the rotation of the power transmission cross bar 602, the matching gear 604 rotates accordingly, driving the end rack 605 and the moving roller traction rod 606 to move longitudinally, thereby pulling the moving roller 4 to move longitudinally along the moving roller matching groove 5.

[0045] The lateral ends of the power transmission cross bar 602 are fixed to the frame 1 through the gear fixing member 603. The power transmission cross bar 602 is fixed in the above manner, and only the power transmission cross bar 602 and the matching gears 604 at both ends are rotated to cooperate with the end rack 605 to drive the end rack 605 and the moving roller traction rod to move longitudinally.

[0046] In a preferred embodiment, a plurality of groups of opposing photoelectric sensing elements 7 are provided on the frame 1. The photoelectric sensing elements 7 are provided on both vertical sides of the movable roller matching groove 5. Each group of photoelectric sensing elements 7 corresponds to a group (two layers controlled by the same forward and reverse power motor 601) of sheets, and is used to make fine adjustments to the tension of each layer of sheets in real time.

[0047] After the layer change is completed, the moving roller 4 moves to one side of the frame 1. Each group of photoelectric sensing elements 7 corresponds to a group of sheets, and each group of photoelectric sensing elements 7 has signal transmission with the driving component 6 that controls this group of sheets. The photoelectric sensing elements 7 have upper and lower limit positions, and each group of sheets is located between the upper and lower limit positions. When the sheet tension is very large and the tension is sensed by the upper limit position, a signal is output to the corresponding forward and reverse power motor 601. The forward and reverse power motor 601 fine-tunes the moving roller to move closer to the fixed roller to relax the sheet; when the sheet tension is very small and the relaxation is sensed by the lower limit position, a signal is also output to the corresponding forward and reverse power motor 601. The power motor fine-tunes the moving roller away from the fixed roller to tighten the sheet; when it is ensured that each layer of sheet is located between the upper and lower limit positions and is within the photoelectric sensing range, the adjustment of sheets with different tension requirements is completed, and the equipment is started and operated.

[0048] The automatic layer-changing equipment for sheet irradiation production of the present invention can effectively avoid irradiation abnormalities caused by inconsistent tension when changing orders for sheet materials of different specifications by setting up multiple groups of photoelectric sensing components; the above-mentioned abnormalities include but are not limited to abnormalities such as breakage and stretching deformation caused by excessive tension, and abnormal friction between sheets and abnormal irradiation electron beam acceptance caused by insufficient tension.

[0049] In addition, the automatic layer-changing device of the present invention is provided with a detachable radiation shield 8 on the periphery, and a through hole for the radiation electron beam to pass through is reserved on the top of the radiation shield 8, and holes for entering and exiting the sheet are reserved on the side. And the radiation shield 8 is preferably a radiation-proof steel shield. The present invention adds a radiation shield on the periphery of the frame, leaving only the holes for entering and exiting the sheet and the holes for the radiation electron beam, protecting the various transmission parts and electrical components inside the frame, and extending the service life of various structures of the frame.

[0050] The fixed roller 3 and the movable roller 4 are arranged vertically (preferably arranged vertically at a certain angle), and the sheet feed roller 2 is preferably arranged obliquely above the roller combination. When the sheet is passed through, the sheet first passes through the sheet feed roller 2, then bypasses the gap between the fixed roller 3 and the movable roller 4, and finally passes through the same side as the sheet feed. Figure 8 In the preferred embodiment shown, in the roller combination, the first roller is a fixed roller 3, that is, the number of fixed rollers 3 is one more than the number of movable rollers 4, thereby forming a fixed roller-movable roller-fixed roller arrangement, and the sheet bypasses the bottom of the first fixed roller 3; of course, the first roller can also be set as a movable roller 4, that is, the number of movable rollers 4 is one more than the number of fixed rollers 3, thereby forming a movable roller-fixed roller-movable roller arrangement, and the sheet bypasses the top of the first movable roller 4. In the present invention, since the sheet feed roller 2 is provided, the sheet is positioned under the action of the sheet feed roller 2, so it only needs to satisfy the alternate arrangement of the fixed roller 3 and the movable roller 4.

[0051] In addition, the number of the fixed rollers 3 and the moving rollers 4 is not specifically limited in the present invention, and the number of the fixed rollers 3 and the moving rollers 4 is determined according to the radiation intensity required for the sheet.

[0052] In the initial state of the automatic layer changing equipment of the present invention, the fixed roller 3 and the movable roller 4 are located on the same side of the frame. To meet the production of products with different irradiation intensities, the number of layers can be adjusted for control. The corresponding driving component 6 is controlled to slide the movable roller 4 to the other side of the frame to achieve automatic layer changing of the frame. Figures 9 to 11 This is a schematic diagram of the automatic layer changing equipment for sheet material irradiation production according to an embodiment of the present invention changing two layers, four layers and six layers of winding. Fig. 9 As shown, in the roller assembly, one of the movable rollers 4 is moved to the other longitudinal end of the frame under the action of the driving assembly 6; Fig.10 and Fig.11 As shown, when the irradiation intensity of the product needs to be further increased, two or three of the moving rollers 4 are adjusted to move accordingly.

[0053] The automatic layer-changing equipment for sheet irradiation production of the present invention has a frame provided with a fixed roller and a moving roller that can slide along the matching groove of the moving roller, and the two rollers are alternately arranged on the frame, and each moving roller is connected with a traction rod at both ends of the lateral direction, the traction rod passes through the frame and a rack structure is provided at the end, and the driving component transmits power to the power transmission cross bar through the gear, and the gears at both ends of the power transmission cross bar cooperate with the rack structure at the end of the traction rod of the moving roller, and the reciprocating motion of the traction rod of the moving roller is realized by the forward and reverse rotation of the power motor, and finally the moving roller is driven to reciprocate in the matching groove of the moving roller of the frame, so that the left and right position of the moving roller is changed.

[0054] The automatic layer-changing equipment for sheet irradiation production of the present invention can also realize automatic layer-changing of the frame during continuous sheet production, avoiding long-term equipment stagnation and waiting for layer-changing operations; greatly reducing the number of operators entering the irradiation area, avoiding safety hazards; effectively avoiding the risks of current manual layer-changing due to roller scratches and sheet breakage; improving the accuracy of layer-changing, avoiding batch abnormalities in irradiation quality caused by human operation; the sheet winding in the initial state can reduce sheet waste caused by equipment abnormalities.

[0055] It will be easily understood by those skilled in the art that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An automatic layer changing device for sheet irradiation production, characterized in that: It comprises a frame (1), wherein a film feed roller (2) is arranged at one longitudinal end of the frame (1), and a roller assembly is also arranged at the same end; The roller assembly comprises fixed rollers (3) and movable rollers (4) arranged alternately, a driving assembly (6) is provided at the other end of the frame (1), and each movable roller (4) is independently configured with a corresponding driving assembly (6); after being positioned by the sheet feed roller (2), the sheet can sequentially pass through the gap between the fixed roller (3) and the movable roller (4) and pass out from the same side of the frame (1) as the sheet feed side; The two ends of the fixed roller (3) are fixedly connected to the frame (1), and the side of the frame (1) is provided with symmetrical movable roller matching grooves (5). Under the action of the driving component (6), the two ends of the movable roller (4) can be longitudinally moved along the corresponding movable roller matching grooves (5) to the other end of the frame; The driving assembly (6) comprises a forward and reverse power motor (601), the gears of the forward and reverse power motor (601) match the middle gear on the power transmission cross bar (602), and are linked thereto; the lateral ends of the power transmission cross bar (602) are each provided with a matching gear (604), which matches the end rack (605); the end rack (605) is connected to one end of a moving roller traction rod (606), and the other end of the moving roller traction rod (606) is connected to the moving roller (4); A detachable radiation shield (8) is provided on the periphery of the automatic layer-changing device, and a through hole is reserved on the top of the radiation shield (8) for the radiation electron beam to pass through, and a hole is reserved on the side for the sheet to enter and exit.

2. The automatic layer changing equipment for sheet irradiation production according to claim 1, characterized in that: The lateral end of the power transmission cross bar (602) is fixed to the frame (1) via a gear fixing member (603).

3. The automatic layer changing equipment for sheet irradiation production according to claim 1, characterized in that: The frame (1) is also provided with a plurality of groups of opposing photoelectric sensing elements (7), each group of photoelectric sensing elements (7) corresponds to a group of sheets, and has signal transmission with a driving component (6) that controls the group of sheets, so as to fine-tune the tension of each layer of sheets in real time.

4. The automatic layer changing equipment for sheet irradiation production according to claim 3 is characterized in that: The photoelectric sensing element (7) has upper and lower limit positions, and each group of sheets is located between the upper and lower limit positions.

5. The automatic layer changing equipment for sheet irradiation production according to claim 3, characterized in that: The photoelectric sensing element (7) is arranged on both vertical sides of the movable roller matching groove (5).

6. The automatic layer changing equipment for sheet irradiation production according to any one of claims 1 to 5, characterized in that: In the roller combination, the first passing roller is the fixed roller (3), and the sheet passes around the bottom of the fixed roller (3).

7. The automatic layer changing equipment for sheet irradiation production according to any one of claims 1 to 5, characterized in that: In the roller combination, the first passing roller is the moving roller (4), and the sheet passes around the top of the moving roller (4).

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