A weighing device for folding packing webbing and webbing packaging machine

Abstract

The present invention discloses a weighing device for folding packing webbing and a webbing packaging machine, the weighing device comprises a main frame, a packing hopper, the packing hopper is provided with a front partition, the main frame is provided with a lifting seat, a lifting drive mechanism, a weighing sensor is installed between the lifting seat and the packing hopper, the packing hopper is provided with a hanging rack, a sprocket is installed on the cross bar of the hanging rack, a balancing chain is placed on the sprocket, one end of the balancing chain is connected to the front partition, a counterweight is suspended on the other end of the balancing chain, the front partition is suspended under the gravity balance of the counterweight, and a support plate suspension mechanism is provided at the front partition. The present invention can change the relative height position between the packing hopper and the front partition so that the folded webbing is completely located in the concave cavity surrounded by the packing hopper and the front partition, and can also overcome the technical problem that part of the weight of the folded webbing is shared by the front partition, resulting in a large error in the weighing of the weighing sensor, thereby ensuring that the gram weight of the entire webbing packing package is accurately up to standard.

Description

Technical Field

[0001] The invention relates to the field of webbing packaging equipment, and in particular to a weighing device for folding and packing webbing and a webbing packaging machine. Background Art

[0002] Existing webbings are generally produced in strips, and the webbings need to be packaged after production. The Chinese patent with the authorization announcement number CN207698873U discloses a horizontal packaging machine for packaging webbings, whose reciprocating traction device pulls out the webbing from the discharge wheel and reciprocates the webbing to the packaging hopper of the packaging machine frame. The packaging hopper has an opening on the front side to facilitate the input of the webbing, and the upper opening of the packaging hopper is convenient for taking out the packaged package. The depth of the packaging hopper needs to match the thickness of the package, and the packaging hopper needs to be continuously moved downward relative to the front partition as the number of folded webbing layers increases.

[0003] After each layer of webbing is folded at the baling machine frame, it is buckled into the baling hopper using a buckle plate, and the baling hopper is lowered at the same time to embed the webbing layer into the baling hopper, and then the webbing is pulled out from the discharge wheel and folded, and then another layer is folded, and the same operation is performed again, so that the webbing is stacked layer by layer and finally packaged. After the package is packaged, the package is taken out of the hopper for weighing. If the package does not meet the weight requirement, the package needs to be supplemented or reduced, which is very inconvenient.

[0004] In order to solve this problem, a potential solution is currently proposed on the market: weigh each layer of webbing while folding it, so as to ensure that the weight of the entire package meets the standard. However, since each layer of webbing is folded and laid, the webbing in the folded state has an elastic recovery tendency to expand to the front and rear ends. Therefore, it is necessary to ensure that both the front and rear sides are blocked when weighing so that the webbing remains stable when folded. Its rear side is blocked by the inner wall of the packing hopper, and its front side is blocked by the front partition set at the packing hopper. Since the weight of the webbing is light, its weighing accuracy needs to be precise to milligrams, so the packing hopper can only be installed on the weighing sensor. However, since the front side of the folded webbing is blocked by the front partition, the front side of the folded webbing is equivalent to stepping on the wall of the front partition, and part of the weight of the folded webbing is shared by the front partition, which will cause the weighing sensor under the packing hopper to be unable to accurately weigh the weight of the folded webbing.

[0005] Therefore, how to ensure that the packing hopper can move downward and prevent the front partition from taking away part of the weight of the folding webbing has become a technical problem that needs to be overcome. In order to solve this technical problem, we propose a weighing device for folding packing webbing and a webbing packaging machine. Summary of the invention

[0006] The object of the present invention is to overcome the deficiencies of the prior art and to provide a weighing device for folding and packing webbing and a webbing packaging machine.

[0007] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a weighing device for folding packing webbing, comprising a main frame and a packing hopper for weighing the packing webbing, a front baffle being independently arranged at the front opening of the packing hopper, the main frame being provided with a lifting seat and a lifting drive mechanism for driving the lifting seat to perform lifting movement, a weighing sensor being installed between the lifting seat and the packing hopper, a hanging rack being provided at the packing hopper, a sprocket wheel that can rotate independently being installed at the cross bar of the hanging rack, a balancing chain being placed at the sprocket wheel, one end of the balancing chain being connected to the front baffle, a counterweight block being suspended at the other end of the balancing chain, the front baffle being in a suspended state under the gravity balance of the counterweight block, a support plate suspension mechanism being provided at the front baffle, the support plate suspension mechanism being used to drive the front baffle to resume a suspended state after the packing hopper is lowered.

[0008] It is further explained that the support plate suspension mechanism is a push-pull closing electromagnet, the outer base body of the push-pull closing electromagnet is fixedly installed on the main frame, the telescopic rod of the push-pull closing electromagnet is provided with a supporting head, and the front partition is lowered simultaneously with the baling hopper until the front partition is supported by the upper limit beam of the main frame, and then the push-pull closing electromagnet pushes the front partition upward so that the front partition resumes the suspended state under the gravity balance of the counterweight block.

[0009] It is further explained that vertically arranged slide rails are provided on both sides of the packing hopper, the guide rails of the slide rails are fixedly installed on the packing hopper, and the sliders of the slide rails are installed on the front partition.

[0010] It is further explained that the front partition is provided with a protruding piece portion for connecting with the balance chain.

[0011] It is further explained that the lower part of the counterweight block is connected to one end of the counterweight chain, and the other end of the counterweight chain is connected to the protruding piece portion at the front bulkhead.

[0012] To further explain, the lifting drive mechanism includes a transmission screw pair and a reduction motor, the output end of the reduction motor is connected to the input end of the transmission screw pair, and the screw nut of the transmission screw pair is connected to the lifting seat.

[0013] It is further explained that an intermediate bracket is connected between the screw nut and the lifting seat, the lower end of the intermediate bracket is connected to the screw nut, and the upper end of the intermediate bracket is connected to the lifting seat.

[0014] A webbing packaging machine is based on the above-mentioned weighing device for folding and packing webbing. The webbing packaging machine includes a main machine, a reciprocating traction device is provided at the main machine, the weighing device is provided at the rear end of the main machine, and a webbing conveying device is provided at the front end of the main machine.

[0015] Specifically, a reversible bridge is provided between the main machine platform and the weighing device, and the bridge is used to guide the webbing to be transported to the weighing device.

[0016] The beneficial effects of the present invention are that the present invention can change the relative height position between the packing hopper and the front partition so that the folded webbing is completely located in the concave cavity surrounded by the packing hopper and the front partition, and can also overcome the technical problem that part of the weight of the folded webbing is shared by the front partition, resulting in a large error in the weighing of the weighing sensor, thereby ensuring that the gram weight of the entire webbing packaging package accurately meets the standard. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The figure is a schematic diagram of the structure of the present invention when it is applied to a webbing packaging machine.

[0018] Figure 2 It is a structural diagram of specific embodiment 1.

[0019] Figure 3 This is a schematic diagram of the structure in which the webbing is folded and laid in the baling hopper.

[0020] Figure 4 It is a structural diagram of the push-pull closing electromagnet before pushing the front partition.

[0021] Figure 5 This is a schematic diagram of the structure when the push-pull closing electromagnet pushes the front partition.

[0022] Figure 6 This is a structural schematic diagram when the baling hopper is lowered so that the webbing is completely located in the concave cavity surrounded by the baling hopper and the front partition.

[0023] Figure 7 It is a structural schematic diagram of a push-pull closing electromagnet that pushes the front partition and then retracts the telescopic rod.

[0024] Figure 8 It is a structural diagram of specific embodiment 2.

[0025] Fig. 9 It is a schematic diagram of the structure of the webbing packaging machine after the webbing is folded and conveyed to the present invention.

[0026] Fig.10 Schematic diagram of the structure of the webbing packaging machine preparing to fold and lay down the next layer of webbing.

[0027] Figure numbers: 10, main frame; 11, lifting seat; 12, lifting drive mechanism; 121, transmission screw pair; 1211, screw nut; 122, reduction motor; 13, slide rail; 131, guide rail; 132, slider; 14, intermediate bracket; 15, upper limit beam; 20, packing hopper; 21, hanger; 22, sprocket; 30, weighing sensor; 40, front partition; 41, convex piece; 42, bending convex piece; 50, balance chain; 51, counterweight; 52, counterweight chain; 60, push-pull closing electromagnet; 61, outer seat; 62, telescopic rod; 63, supporting head; 70, webbing packaging machine; 71, main machine platform; 72, reciprocating traction device; 73, webbing conveying device; 74, bridge; 80, webbing. DETAILED DESCRIPTION

[0028] In order to make the objectives, technical solutions and advantages of the present invention more clear, the present invention will be further described in detail below with reference to the accompanying drawings.

[0029] Specific embodiment 1: Combined with the attached Figure 1 and attached Figure 2 As shown, a weighing device for folding packing webbing includes a main frame 10 and a packing hopper 20 for weighing the webbing packing. A front partition 40 is independently arranged at the front opening of the packing hopper 20. The packing hopper 20 is specifically provided with a front opening for convenient input of the webbing and an upper opening for convenient removal of the packaged package. The main frame 10 is provided with a lifting seat 11 and a lifting drive mechanism 12 for driving the lifting seat 11 to perform lifting movement. A weighing sensor 30 is installed between the lifting seat 11 and the packing hopper 20. Vertically arranged slide rails 13 are provided on both sides of the packing hopper 20. The guide rails 131 of the slide rails 13 are fixedly installed on the packing hopper 20, and the sliders 132 of the slide rails 13 are installed at the front partition 40.

[0030] Combined with Figure 2 To Attachment Figure 4 As shown, a hanging bracket 21 is provided at the baling hopper 20, and an independently rotatable sprocket 22 is installed at the cross bar of the hanging bracket 21, and a balancing chain 50 is placed at the sprocket 22, one end of the balancing chain 50 is connected to the front partition 40, and a counterweight block 51 is suspended at the other end of the balancing chain 50, so that the balancing chain 50 is in an inverted U shape, and a protruding piece 41 for connecting with the balancing chain 50 is provided at the front partition 40, and the front partition 40 is in a suspended state under the gravity balance of the counterweight block 51, and a support plate suspension mechanism is provided at the front partition 40, and the support plate suspension mechanism is used to drive the front partition 40 to resume the suspended state after the baling hopper 20 is lowered.

[0031] Combined with Figure 3 and attached Figure 4As shown, the support plate suspension mechanism is a push-pull closing electromagnet 60, the outer base body 61 of the push-pull closing electromagnet 60 is fixedly installed on the main frame 10, and the telescopic rod 62 of the push-pull closing electromagnet 60 is provided with a supporting head 63. The front partition 40 is lowered simultaneously with the packaging hopper 20 until the front partition 40 is supported by the upper limit beam 15 of the main frame 10. The push-pull closing electromagnet 60 pushes the front partition 40 upward, so that the front partition 40 is restored to a suspended state under the gravity balance of the counterweight block 51.

[0032] Combined with Figure 2 As shown, the lifting drive mechanism 12 includes a transmission screw pair 121 and a reduction motor 122. The output end of the reduction motor 122 is connected to the input end of the transmission screw pair 121. The screw nut 1211 of the transmission screw pair 121 is connected to the lifting seat 11. An intermediate bracket 14 is connected between the screw nut 1211 and the lifting seat 11. The lower end of the intermediate bracket 14 is connected to the screw nut 1211, and the upper end of the intermediate bracket 14 is connected to the lifting seat 11.

[0033] Combined with Figure 1 and attached Fig. 9 As shown, a webbing packaging machine includes a mainframe 71, a reciprocating traction device 72 is provided at the mainframe 71, a weighing device is provided at the rear end of the mainframe 71, and a webbing conveying device 73 is provided at the front end of the mainframe 71. A reversible bridge 74 is provided between the mainframe 71 and the weighing device, and the bridge 74 is used to guide the webbing to be conveyed to the weighing device. Fig. 9 As shown, the webbing conveying device 73 conveys the webbing to be packaged to the reciprocating traction device 72, and the reciprocating traction device 72 reciprocates back and forth to convey the webbing to the weighing device, and the webbing enters from the front opening of the packaging hopper 20 of the weighing device.

[0034] Combined with Figure 3 As shown, the webbing 80 conveyed to the weighing device is laid in the baling hopper 20 in a folded state. In order to ensure that the weight of the entire webbing package meets the standard, each folded layer of webbing is weighed. Since the webbing must maintain a stable folded state during weighing, and the baling hopper 20 and the front partition 40 are independently arranged, the relative height position between the baling hopper 20 and the front partition 40 can be changed so that the layer of webbing 80 is completely located in the concave cavity surrounded by the baling hopper 20 and the front partition 40.

[0035] However, there is a technical difficulty here. When the layer of webbing 80 is completely located in the concave cavity surrounded by the baling hopper 20 and the front partition 40, the front side of the folded webbing 80 is equivalent to stepping on the wall of the front partition 40, and part of the weight of the folded webbing is shared by the front partition 40. The baling hopper 20 and the front partition 40 are independently set. At this time, the weighing sensor under the baling hopper 20 weighs the layer of folded webbing, which is obviously too small and has a large error. If the baling hopper 20 and the front partition 40 are fixed as one body, it is impossible to make the layer of webbing 80 completely located in the concave cavity surrounded by the baling hopper 20 and the front partition 40 by changing the relative height position between the baling hopper 20 and the front partition 40.

[0036] In order to overcome this technical difficulty, we adopt the following technical means: a weighing sensor 30 is installed between the lifting seat 11 and the baling hopper 20, a hanging bracket 21 is set at the baling hopper 20, and a sprocket 22 that can rotate independently is installed at the cross bar of the hanging bracket 21. A balancing chain 50 is placed on the sprocket 22. One end of the balancing chain 50 is connected to the front partition 40, and a counterweight 51 is suspended at the other end of the balancing chain 50. The sprocket 22 is equivalent to a fixed pulley, and the balancing chain 50 is equivalent to a hanging rope hung on the fixed pulley. The front partition 40 is in a suspended state under the gravity balance of the counterweight 51, and a support plate suspension mechanism is set at the front partition 40. The support plate suspension mechanism is used to drive the front partition 40 to resume the suspended state after the baling hopper 20 descends.

[0037] Before weighing the layer of webbing 80, Figure 4 and attached Figure 5 As shown, the lifting drive mechanism 12 drives the packing hopper 20 to descend a unit height through the lifting seat 11, thereby changing the relative height position between the packing hopper 20 and the front partition 40, so that the layer of webbing 80 is as shown in the attached Figure 6 As shown, the front baffle 40 is completely located in the concave cavity formed by the packing hopper 20 and the front baffle 40. The front baffle 40 is lowered together with the packing hopper 20 until the front baffle 40 is supported by the upper limit beam 15 of the main frame 10. Figure 3 As shown, at this time, the bent protruding plate portion 42 of the front bulkhead 40 is completely placed on the upper limit beam 15 of the main frame 10.

[0038] Subsequently, the push-pull closing electromagnet 60 of the support plate suspension mechanism is driven, and the telescopic rod 62 of the push-pull closing electromagnet 60 extends upward, and the supporting head 63 at the telescopic rod 62 pushes the front partition 40 upward. Under the supporting force of the push-pull closing electromagnet 60, the part of the balance chain 50 located on the side of the front partition 40 is in a loose state, causing the counterweight 51 to fall, and the sprocket 22 deflects to the side where the counterweight 51 is located. The counterweight 51 falls until the tension on both sides of the balance chain 50 reaches a balanced state and then stops. Then, as shown in the attached figure Figure 7As shown, the telescopic rod 62 of the push-pull closing electromagnet 60 is retracted, and at this time the front partition 40 is in a suspended state relative to the main frame 10, and the bent protruding plate portion 42 of the front partition 40 is located in a suspended position above the upper limit beam 15 of the main frame 10.

[0039] At this time, since the front partition 40, the counterweight 51, the balance chain 50, and the sprocket 22 form a static and stable fixed pulley system, the hanger 21 supports the fixed pulley system, and the front partition 40 and the packing hopper 20 form an independent whole relative to the weighing sensor 30. Part of the weight of the folded webbing is shared by the front partition 40, which will not cause errors in the weighing of the whole. The weighing sensor 30 can weigh the whole accurately in real time and display it on the desktop display. The webbing is packed until the target weight is reached and then packaged. Finally, the packing hopper 20 rises to the highest position to facilitate the removal of the packed package.

[0040] Specific embodiment 2: Combined with the attached Figure 1 and attached Figure 8 As shown, a weighing device for folding packing webbing includes a main frame 10 and a packing hopper 20 for weighing the webbing packing. A front partition 40 is independently arranged at the front opening of the packing hopper 20. The packing hopper 20 is specifically provided with a front opening for convenient input of the webbing and an upper opening for convenient removal of the packaged package. The main frame 10 is provided with a lifting seat 11 and a lifting drive mechanism 12 for driving the lifting seat 11 to perform lifting movement. A weighing sensor 30 is installed between the lifting seat 11 and the packing hopper 20. Vertically arranged slide rails 13 are provided on both sides of the packing hopper 20. The guide rails 131 of the slide rails 13 are fixedly installed on the packing hopper 20, and the sliders 132 of the slide rails 13 are installed on both sides of the front partition 40.

[0041] Combined with Figure 2 To Attachment Figure 4 As shown, a hanging bracket 21 is provided at the baling hopper 20, and an independently rotatable sprocket 22 is installed at the cross bar of the hanging bracket 21, and a balancing chain 50 is placed at the sprocket 22, one end of the balancing chain 50 is connected to the front partition 40, and a counterweight block 51 is suspended at the other end of the balancing chain 50, so that the balancing chain 50 is in an inverted U shape, and a protruding piece 41 for connecting with the balancing chain 50 is provided at the front partition 40, and the lower part of the counterweight block 51 is connected to one end of the counterweight chain 52, and the other end of the counterweight chain 52 is connected to the protruding piece 41 at the front partition 40, and the front partition 40 is in a suspended state under the gravity balance of the counterweight block 51, and a support plate suspension mechanism is provided at the front partition 40, and the support plate suspension mechanism is used to drive the front partition 40 to resume the suspended state after the baling hopper 20 is lowered. The second specific embodiment is additionally provided with a counterweight chain 52 , and other specific structural designs are the same as those of the first specific embodiment. The counterweight chain 52 mainly serves to make the counterweight of the counterweight block 51 more balanced.

[0042] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0043] The above description does not limit the technical scope of the present invention in any way. Any modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A weighing device for folding a strapping webbing, comprising a main frame (10) and a strapping hopper (20) for weighing the strapping webbing, characterized in that: A front partition (40) is independently provided at the front opening of the baling hopper (20); the main frame (10) is provided with a lifting seat (11) and a lifting drive mechanism (12) for driving the lifting seat (11) to perform lifting movement; a weighing sensor (30) is installed between the lifting seat (11) and the baling hopper (20); a hanging rack (21) is provided at the baling hopper (20); a sprocket (22) that can rotate independently is installed at the cross bar of the hanging rack (21); A balancing chain (50) is placed at the sprocket (22), one end of the balancing chain (50) is connected to the front baffle (40), and a counterweight (51) is suspended at the other end of the balancing chain (50). The front baffle (40) is in a suspended state under the gravity balance of the counterweight (51), and a support plate suspension mechanism is provided at the front baffle (40). The support plate suspension mechanism is used to drive the front baffle (40) to resume the suspended state after the baling hopper (20) descends; The support plate suspension mechanism is a push-pull type closing electromagnet (60), the outer base body (61) of the push-pull type closing electromagnet (60) is fixedly mounted on the main frame (10), the telescopic rod (62) of the push-pull type closing electromagnet (60) is provided with a supporting head (63), the front partition (40) is lowered simultaneously with the packaging hopper (20), until the front partition (40) is supported by the upper limit beam (15) of the main frame (10), and the push-pull type closing electromagnet (60) pushes the front partition (40) upwards, so that the front partition (40) is restored to a suspended state under the gravity balance of the counterweight block (51); Vertically arranged slide rails (13) are provided on both sides of the baling hopper (20); guide rails (131) of the slide rails (13) are fixedly mounted on the baling hopper (20); and sliders (132) of the slide rails (13) are mounted on the front partition plate (40); The front baffle (40) is provided with a protruding piece (41) for connecting to the balancing chain (50); The lower part of the counterweight block (51) is connected to one end of a counterweight chain (52), and the other end of the counterweight chain (52) is connected to the protruding piece (41) at the front bulkhead (40).

2. A weighing device for folding packing webbing according to claim 1, characterized in that: The lifting drive mechanism (12) comprises a transmission screw pair (121) and a reduction motor (122); the output end of the reduction motor (122) is connected to the input end of the transmission screw pair (121); and the screw nut (1211) of the transmission screw pair (121) is connected to the lifting seat (11).

3. A weighing device for folding packing webbing according to claim 2, characterized in that: An intermediate bracket (14) is connected between the screw nut (1211) and the lifting seat (11), the lower end of the intermediate bracket (14) is connected to the screw nut (1211), and the upper end of the intermediate bracket (14) is connected to the lifting seat (11).

4. A webbing packaging machine, characterized in that: Based on the weighing device for folding and packing webbing according to claim 1, the webbing packaging machine (70) comprises a main station (71), a reciprocating traction device (72) is provided at the main station (71), the weighing device is provided at the rear end of the main station (71), and a webbing conveying device (73) is provided at the front end of the main station (71).

5. A webbing packaging machine according to claim 4, characterized in that: A flippable bridge frame (74) is provided between the main machine platform (71) and the weighing device, and the bridge frame (74) is used to guide the webbing to be transported to the weighing device.

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