Pre-sealing pressure head hook claw suitable for non-magnetic material can cover sealing machine

Abstract

The utility model discloses a pre-sealing pressure head hook claw suitable for a non-magnetic material can cover sealing machine, which is characterized by comprising a pre-sealing shaft, a pre-sealing pressure plate, a cover removing ejector rod, two hook claw components and two adjusting components, and the pre-sealing pressure plate is arranged at the bottom of the pre-sealing shaft; the pre-sealing shaft seat is provided with an ejector rod channel in the vertical direction, the cap removing ejector rod is arranged in the ejector rod channel in a vertical moving mode, and a through hole for the cap removing ejector rod to stretch out is formed in the pre-sealing pressing disc. The hook claw assemblies and the adjusting assemblies are in one-to-one correspondence, the hook claw assemblies are installed on the pre-sealing pressing disc in a swinging mode through the corresponding adjusting assemblies and symmetrically arranged on the two sides of the pre-sealing shaft, and the hook parts of the two hook claw assemblies are oppositely arranged. The pre-sealing pressure head hook claw can be matched with can covers of different materials and different specifications, metal chippings generated by friction are avoided, and can sealing precision, production efficiency and product sanitation safety can be effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a can making equipment, in particular to a pre-sealing pressure head hook claw of the can sealing machine of non -magnetic material cover. BACKGROUND

[0002] In many industries such as food, beverage, chemical industry, medicine, automatic can sealing machine is the key equipment to realize product scale, standardization packaging, and the performance of the pre-sealing mechanism as the core component of the can sealing machine directly determines the fitting precision of the can cover and the can body, the sealing property of the can sealing and the storage shelf life of the final product. The core task of the pre-sealing mechanism is to complete the accurate positioning and preliminary fixation of the can cover before the can body and the can cover are formally sealed, so as to avoid the problems such as can cover deviation and irregular edge curling in the subsequent sealing process, therefore, its stability and adaptability are crucial to the whole production process.

[0003] The pre-sealing mechanism of the traditional can sealing machine on the current market generally adopts the mode of pre-sealing nail cooperating with magnet adsorption. The working logic of this kind of mechanism is to use the magnet embedded in the pre-sealing pressure disc to generate magnetic attraction force to adsorb the can cover of ferromagnetic material, and then to assist the positioning of the can cover through the fixed pre-sealing nail, so as to realize the pre-sealing positioning. However, this method can only be used for positioning the can cover of magnetic material such as iron and steel. In recent years, in response to the industry trends such as lightweight, reduction of production cost and improvement of packaging aesthetics, the application of non-magnetic material can cover such as aluminum and plastic is becoming more and more widespread, especially in the field of food and beverage that pursues lightweight packaging, non-magnetic material can cover has become the mainstream choice. This makes the traditional pre-sealing mechanism unable to adsorb the non-magnetic material can cover, resulting in unstable positioning, easy falling off of the can cover and other problems, which seriously restricts the production efficiency and product quality, and cannot adapt to the production demand of multi-material packaging.

[0004] At the same time, during the pre-sealing process of the can cover using the traditional pre-sealing mechanism, the bottom of the can cover will directly contact with the guide rail or guide groove below. With the movement of the can cover, continuous friction will occur between them, which is easy to produce metal debris. Not only will it cause wear and tear to the can cover, but also these debris may fall into the product in the can once they fall off, which will cause serious product quality problems and affect the health of consumers in industries with high hygiene requirements such as food and medicine, and may also cause quality complaints and brand reputation loss of enterprises.

[0005] In addition, the traditional pre-sealing mechanism has poor adjustment flexibility. The installation position of the pre-sealing nail is mostly fixed structure. When there is a slight deviation in the size of the can cover or different specifications of the can cover need to be replaced, the operator needs to disassemble the whole pre-sealing pressure disc and even the related connecting parts for adjustment, which is complicated and time-consuming, and seriously affects the production efficiency. UTILITY MODEL CONTENTS

[0006] The utility model wants to solve the problem to provide a kind of pre-sealing pressure head hook claw of the can sealing machine of non-magnetic material cover, this pre-sealing pressure head hook claw can be adapted to various different materials, different specifications of cover, avoid the metal chip generated by friction, can effectively improve the sealing precision, production efficiency and product health safety.

[0007] In order to solve the above technical problems, the technical scheme adopted is as follows:

[0008] A kind of pre-sealing pressure head hook claw of the can sealing machine of non-magnetic material cover, it is characterized by including pre-sealing shaft, pre-sealing pressure disc, uncap top rod, two hook claw assemblies and two adjusting assemblies, pre-sealing pressure disc is arranged at the bottom of pre-sealing shaft;Pre-sealing shaft seat is provided with the top rod channel of up-down trend, uncap top rod is movably arranged in top rod channel, and pre-sealing pressure disc is provided with the through hole for uncap top rod to extend;Hook claw assembly and adjusting assembly are one-to-one correspondence, hook claw assembly is swingably installed on pre-sealing pressure disc by corresponding adjusting assembly and is symmetrically arranged at the two sides of pre-sealing shaft, and the hook of two hook claw assemblies is arranged towards.

[0009] In the above-mentioned pre-sealing pressure head hook claw, pre-sealing shaft is installed on the can sealing machine, and the driving device, such as cylinder or telescopic mechanism driven by motor, is arranged on the can sealing machine for driving pre-sealing shaft and uncap top rod to lift respectively.Before pre-sealing, according to the size of cover, the position of hook claw assembly can be adjusted by adjusting assembly first, so that the distance between two hook claw assemblies matches the size of cover.When pre-sealing, cover moves to pre-sealing station along the conveying track on the can sealing machine;Then pre-sealing shaft is pressed down, pre-sealing pressure disc covers cover, and as pre-sealing shaft continues to press down, cover can first push the hook of hook claw assembly to retreat and support, and after exceeding the hook of hook claw assembly, hook claw assembly resets and holds cover, so as to complete accurate positioning and preliminary fixing of cover;After pre-sealing pressure head hook claw transfers cover to unloading station, uncap top rod moves downward and pushes cover out through through hole, and when cover is pushed out, the hook of hook claw assembly is also pushed to retreat and support first, and when hook claw assembly is no longer in contact with cover, it resets and waits for positioning of the next cover, and the cycle is repeated in turn.This pre-sealing pressure head hook claw can be adapted to various different materials, especially cover made of non-magnetic material, and according to different specifications of cover, the position of hook claw assembly can also be adjusted, so that cover can be stably fixed when clamping;And after pre-sealing pressure head hook claw fixes cover, the bottom of cover is suspended, so that it will not rub with guide groove under cover when transferring, so as to ensure that no metal chip is generated.

[0010] In a preferred embodiment, the adjusting assembly comprises a claw mounting seat arranged on the pre-sealing pressure plate, the claw mounting seat corresponding to the claw assembly, and the claw assembly is arranged on the corresponding claw mounting seat. In this way, when the claw assembly needs to be replaced or maintained, the claw assembly can be disassembled together with the claw mounting seat, and the maintenance is simpler.

[0011] In a further preferred embodiment, the adjusting assembly further comprises a guide groove arranged on the pre-sealing pressure plate and at least one first bolt, the guide groove is arranged on the outer edge of the pre-sealing pressure plate and extends along the inner and outer directions of the pre-sealing pressure plate, the claw mounting seat is provided with a guide block matched with the guide groove, and the claw mounting seat is movably arranged on the guide groove through the guide block; the pre-sealing pressure plate is further provided with at least one first screw hole, the number of the first screw holes is the same as that of the first bolts and they correspond to each other, the first screw hole extends along the up and down directions and corresponds to the position of the guide groove, the first bolt is threadedly connected with the corresponding first screw hole, and the rod part of the first bolt is in contact with the upper surface of the claw mounting seat. In this way, the claw mounting seat can be moved in and out along the guide groove for adjustment, and after the adjustment is completed, the first bolt can be tightened to make the rod part of the first bolt abut against the claw mounting seat on the guide groove. The inner and outer directions are determined according to the position of the pre-sealing pressure plate, the inner direction is close to the middle position of the pre-sealing pressure plate, and the outer direction is far away from the middle position of the pre-sealing pressure plate.

[0012] In a further preferred embodiment, the claw assembly comprises a movable claw, the upper part of the movable claw is hinged to the corresponding claw mounting seat, and the lower end of the movable claw protrudes inwardly and forms the hooking part.

[0013] In a further preferred embodiment, the claw assembly further comprises a second bolt and a compression spring, the side surface of the claw mounting seat is provided with a second screw hole, the second bolt is threadedly connected with the second screw hole, and the rod part of the second bolt is provided with a guide column; the side surface of the movable claw is provided with a groove matched with the compression spring in the middle lower part, and the groove corresponds to the position of the second screw hole, the compression spring is arranged on the guide column, one end of the compression spring is connected with or in close contact with the groove, and the other end of the compression spring is connected with or in close contact with the rod part of the second bolt. In this way, when the can cover contacts the hooking part of the movable claw, the can cover can push the hooking part to retreat and open, at this time, the compression spring is in a compressed state, and when the can cover does not contact the hooking part of the movable claw, the hooking part of the lower end of the movable claw can be reset under the action of the compression spring. At the same time, the degree of the second bolt screwed inwardly can be adjusted to adjust the elastic force of the compression spring, so as to adjust the rotating force of the movable claw. Generally, the upper part of the movable claw is hinged to the claw mounting seat through a shaft pin, and the movable claw can also adopt a way of arranging a torsion spring on the shaft pin, so that the movable claw can rotate around the shaft pin.

[0014] In a further preferred embodiment, the inner side of the hook portion comprises a first inclined surface gradually inclined inward from bottom to top and a second inclined surface gradually inclined outward from bottom to top, and the upper edge of the first inclined surface is connected with the lower edge of the second inclined surface. With this structure, when the pre-sealing shaft is pressed down, the can lid can be finely adjusted along the first inclined surface, and after continuous force, the hook portion is pried open by the first inclined surface; when the can lid is pushed out by the unsealing push rod, the can lid can also pry open the hook portion again along the second inclined surface; the first inclined surface and the second inclined surface are arranged to ensure that the can lid edge or the hook portion is not abraded during the two prying open processes.

[0015] In a further preferred embodiment, the inclination angle of the first inclined surface is greater than that of the second inclined surface. With this arrangement, the can lid is more likely to pry open the hook portion when moving from bottom to top, and the can lid can pry open the hook portion again only when subjected to the pressure of the unsealing push rod, thereby avoiding the can lid from easily prying open and falling off during the clamped movement.

[0016] In a further preferred embodiment, the lower end of the hook mounting seat is provided with an extension portion extending downward, and the lower end of the extension portion is provided with an arc-shaped surface inclined inward from bottom to top. With this structure, when the pre-sealing shaft is pressed down, the extension portion can play a role in preliminary positioning, so that the can lid with a larger deviation can be moved along the arc-shaped surface and covered by the pre-sealing pressure disc.

[0017] The pre-sealing pressure head hook of the present application can be adapted to can lids of various materials and specifications, avoids the generation of metal debris due to friction, and can effectively improve the sealing precision, production efficiency and product hygiene and safety. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 FIG. 1 is a structural schematic view of the pre-sealing pressure head hook in the embodiment of the present application;

[0019] Figure 2 FIG. 2 is another angle of the structural schematic view of the pre-sealing pressure head hook in the embodiment of the present application;

[0020] Figure 3 FIG. 3 is a structural schematic view of the can lid moving along the conveying track on the sealing machine to the pre-sealing position (the pre-sealing pressure head hook only shows the pre-sealing shaft) in the embodiment of the present application;

[0021] Figure 4 FIG. 4 is a structural schematic view of the pre-sealing pressure head hook prying open the can lid at the pre-sealing position on the sealing machine in the embodiment of the present application;

[0022] Figure 5 FIG. 5 is a partial sectional view of the pre-sealing pressure head hook before the can lid contacts the hook portion in the embodiment of the present application;

[0023] Figure 6 FIG. 6 is a partial sectional view of the pre-sealing pressure head hook after the can lid contacts the hook portion in the embodiment of the present application.Figure 5 Enlarged view of position A;

[0024] Figure 7 Partial sectional view of the pre-sealing pressure head claw when the tank cover contacts the hook portion in the embodiment of the present application;

[0025] Figure 8 For Figure 7 Enlarged view of position B;

[0026] Figure 9 Partial sectional view of the pre-sealing pressure head claw when the tank cover is grabbed in the embodiment of the present application;

[0027] Figure 10 Partial sectional view of the pre-sealing pressure head claw when the tank cover contacts the hook portion after being pushed out by the uncapping top rod in the embodiment of the present application;

[0028] Figure 11 Partial sectional view of the pre-sealing pressure head claw when the tank cover is pushed out by the uncapping top rod and is separated from the hook portion in the embodiment of the present application;

[0029] Figure 12 Sectional view of the tank cover in the embodiment of the present application. DETAILED DESCRIPTION

[0030] The present application will be further described below in combination with the drawings and specific embodiments:

[0031] As Figures 1-11 shown, the pre-sealing pressure head claw suitable for a non-magnetic material tank cover sealing machine comprises a pre-sealing shaft 1, a pre-sealing pressure disc 2, an uncapping top rod 3, two claw assemblies 4 and two adjusting assemblies 5. The pre-sealing pressure disc 2 is arranged at the bottom of the pre-sealing shaft 1. The pre-sealing shaft 1 is provided with a top rod channel running upward and downward. The uncapping top rod 3 is arranged in the top rod channel in a movable manner and extends through a through hole in the pre-sealing pressure disc 2. The claw assemblies 4 and the adjusting assemblies 5 are in one-to-one correspondence. The claw assemblies 4 are swingably mounted on the pre-sealing pressure disc 2 through the corresponding adjusting assemblies 5 and are symmetrically arranged on both sides of the pre-sealing shaft 1. The hook portions 4011 of the two claw assemblies 4 are arranged towards each other.

[0032] In the pre-sealing pressure head claw, the pre-sealing shaft 1 is mounted on a sealing machine 6. The sealing machine 6 is provided with a driving device (as Figures 3-4 shown) for driving the pre-sealing shaft 1 and the uncapping top rod 3 to ascend and descend respectively. The sealing machine 6 is provided with a rotating disc. The rotating disc is provided with an end face cam for cooperating with the control of the ascending and descending of the pre-sealing shaft 1 and the uncapping top rod 3. Before pre-sealing, the specifications of the tank cover 7 (the sectional view of the tank cover 7 is as Figure 12As shown in the figure, the distance between the two hook assemblies 4 can be adjusted by adjusting the position of the hook assemblies 4 through the adjusting assembly 5, so that the distance between the two hook assemblies 4 matches the size of the can lid 7. When pre-sealing, the can lid 7 moves along the conveying track on the seamer 6 to the pre-sealing station; then the pre-sealing shaft 1 is pressed down, the pre-sealing pressure plate 2 covers the can lid 7, and as the pre-sealing shaft 1 continues to be pressed down, the can lid 7 can first push the hooking part 4011 of the hook assembly 4 away, and after passing the hooking part 4011 of the hook assembly 4, the hook assembly 4 resets and grabs the can lid 7, thereby completing the accurate positioning and preliminary fixing of the can lid 7; after the pre-sealing pressure head hook transfers the can lid 7 to the unloading station, the can lid 7 is pushed out by the unloading top rod 3 through the through hole, and at the same time, the hooking part 4011 of the hook assembly 4 is also pushed away by the can lid 7, and when the hook assembly 4 is no longer in contact with the can lid 7, it resets and waits for the positioning of the next can lid 7, and the cycle continues. This pre-sealing pressure head hook can adapt to can lids 7 made of various materials, especially non-magnetic materials, and according to different specifications of the can lid 7, the position of the hook assembly 4 can be adjusted to stably fix the can lid 7 when clamping; and after the pre-sealing pressure head hook fixes the can lid 7, the bottom of the can lid 7 is suspended, so that it will not rub against the guide groove 502 under the can lid 7 during transfer, thereby ensuring that no metal debris is generated.

[0033] The adjusting assembly 5 includes a hook mounting seat 501, which is arranged on the pre-sealing pressure plate 2, and the hook mounting seat 501 corresponds to the hook assembly 4 one by one, and the hook assembly 4 is installed on the corresponding hook mounting seat 501. Through this arrangement, when the hook assembly 4 needs to be replaced or maintained, the hook assembly 4 can be disassembled together with the hook mounting seat 501, and the maintenance is simpler.

[0034] The adjusting assembly 5 further comprises a guide groove 502 provided on the pre-sealing pressure plate 2 and a plurality of first bolts 503. The guide groove 502 is provided on the outer edge of the pre-sealing pressure plate 2 and extends along the inner-outer direction of the pre-sealing pressure plate 2. The hook mounting seat 501 is provided with a guide block (not shown in the figure) matched with the guide groove 502, and the hook mounting seat 501 is movably arranged on the guide groove 502 through the guide block. The pre-sealing pressure plate 2 is further provided with a plurality of first screw holes 201, which are in one-to-one correspondence with the first bolts 503. The first screw holes 201 extend along the up-down direction and correspond to the positions of the guide groove 502. The first bolts 503 are threadedly connected with the corresponding first screw holes 201, and the shanks of the first bolts 503 are in contact with the upper surface of the hook mounting seat 501. Through this arrangement, the hook mounting seat 501 can be moved in the inner-outer direction along the guide groove 502 for adjustment. After the adjustment is completed, the first bolts 503 can be tightened to make the shanks of the first bolts 503 abut against the hook mounting seat 501 on the guide groove 502. The inner-outer direction is determined according to the position of the pre-sealing pressure plate 2. The direction close to the middle position of the pre-sealing pressure plate 2 is the inner direction, and the direction away from the middle position of the pre-sealing pressure plate 2 is the outer direction.

[0035] The hook assembly 4 comprises a movable hook 401. The upper part of the movable hook 401 is hingedly connected with the corresponding hook mounting seat 501, and the lower end of the movable hook 401 protrudes inwardly and forms a hooking portion 4011.

[0036] The hook assembly 4 further comprises a second bolt 402 and a compression spring 403. The side surface of the hook mounting seat 501 is provided with a second screw hole 5011. The second bolt 402 is threadedly connected with the second screw hole 5011, and the shank of the second bolt 402 is provided with a guide column 4021. The side surface of the movable hook 401 is provided with a groove 4012 matched with the compression spring 403, and the groove 4012 corresponds to the position of the second screw hole 5011. The compression spring 403 is arranged on the guide column 4021, and one end of the compression spring 403 is connected with the groove 4012, and the other end of the compression spring 403 is connected with the shank of the second bolt 402. Through this arrangement, when the can cover 7 contacts with the hooking portion 4011 of the movable hook 401, the can cover 7 can push the hooking portion 4011 to be retracted and opened. At this time, the compression spring 403 is in a compressed state. When the can cover 7 does not contact with the hooking portion 4011 of the movable hook 401, the hooking portion 4011 at the lower end of the movable hook 401 can be reset under the action of the compression spring 403. At the same time, the degree of tightening of the second bolt 402 inwardly can be adjusted to adjust the elastic force of the compression spring 403, so as to adjust the rotating force of the movable hook 401. Generally, the upper part of the movable hook 401 is hingedly connected with the hook mounting seat 501 through a shaft pin. The movable hook 401 can also be provided with a torsional spring on the shaft pin, so that the movable hook 401 can rotate around the shaft pin.

[0037] The inner side of the hook portion 4011 comprises a first inclined surface 40111 gradually inclined inward from bottom to top and a second inclined surface 40112 gradually inclined outward from bottom to top, and the upper edge of the first inclined surface 40111 is connected with the lower edge of the second inclined surface 40112. With this structure, when the pre-sealing shaft 1 is pressed down, the can cover 7 can be fine-tuned along the first inclined surface 40111, and after continuous force, the hook portion 4011 is pried open by the first inclined surface 40111; when the can cover 7 is pushed out by the unhooking push rod 3, the can cover 7 can also pry open the hook portion 4011 again along the second inclined surface 40112; the first inclined surface 40111 and the second inclined surface 40112 are arranged to ensure that the can cover 7 edge or the hook portion 4011 will not be abraded during the two prying open processes.

[0038] The inclination angle of the first inclined surface 40111 is greater than that of the second inclined surface 40112. With this arrangement, the can cover 7 is more likely to pry open the hook portion 4011 when moving from bottom to top, and the can cover 7 can pry open the hook portion 4011 again when subjected to the pressure of the unhooking push rod 3, avoiding the can cover 7 from easily prying open the hook portion 4011 and falling off during the clamped movement.

[0039] The lower end of the hook claw mounting seat 501 is provided with an extension portion 5012 extending downward, and the lower end of the extension portion 5012 is provided with an arc-shaped surface 50121 inclined inward from bottom to top. With this structure, when the pre-sealing shaft 1 is pressed down, the extension portion 5012 can play a role in preliminary positioning, so that the can cover 7 with larger deviation can first move along the arc-shaped surface 50121 and be covered by the pre-sealing pressing disc 2.

Claims

1. A pre-sealing pressure head hook claw adapted to a can-sealing machine for non-magnetic material can lids, characterized in that: It includes a pre-sealing shaft, a pre-sealing pressure plate, a cap removal rod, two hook assemblies, and two adjusting assemblies. The pre-sealing pressure plate is located at the bottom of the pre-sealing shaft. The pre-sealing shaft seat has a vertically oriented rod channel, in which the cap removal rod is movably positioned. The pre-sealing pressure plate has a through hole for the cap removal rod to extend. The hook assemblies and adjusting assemblies correspond one-to-one. The hook assemblies are oscillatingly mounted on the pre-sealing pressure plate and symmetrically arranged on both sides of the pre-sealing shaft via the corresponding adjusting assemblies. The hook parts of the two hook assemblies face each other.

2. The pre-sealing pressure head hook claw of a can sealing machine adapted to non-magnetic material can lids as described in claim 1, characterized in that: The adjustment component includes a hook mounting base, which is disposed on the pre-sealing pressure plate. The hook mounting base corresponds one-to-one with the hook assembly, and the hook assembly is installed on the corresponding hook mounting base.

3. The pre-sealing pressure head hook claw of a can sealing machine adapted to non-magnetic material can lids as described in claim 2, characterized in that: The adjustment assembly further includes a guide groove and at least one first bolt disposed on the pre-sealing platen. The guide groove is disposed on the outer edge of the pre-sealing platen and extends in the inward and outward directions of the pre-sealing platen. The hook mounting base is provided with a guide block that matches the guide groove. The hook mounting base is movably disposed on the guide groove through the guide block. The pre-sealing platen is also provided with at least one first screw hole. The number of first screw holes is the same as the number of first bolts and they correspond one-to-one. The first screw holes extend in the vertical direction and correspond to the position of the guide groove. The first bolt is threadedly connected to the corresponding first screw hole, and the shank of the first bolt contacts the upper surface of the hook mounting base.

4. The pre-sealing pressure head hook claw of a can sealing machine adapted to non-magnetic material can lids as described in claim 2, characterized in that: The hook assembly includes a movable hook, the upper part of which is hinged to the corresponding hook mounting base, and the lower end of which protrudes inward to form the hook portion.

5. The pre-sealing pressure head hook claw of a can sealing machine adapted to non-magnetic material can lids as described in claim 4, characterized in that: The hook assembly also includes a second bolt and a compression spring. The side of the hook mounting base is provided with a second screw hole. The second bolt is threaded to the second screw hole, and the shank of the second bolt is provided with a guide post. The lower middle part of the side of the movable hook has a groove that matches the compression spring, and the groove corresponds to the position of the second screw hole. The compression spring passes through the guide post, and one end of the compression spring is connected to or in close contact with the groove, and the other end of the compression spring is connected to or in close contact with the shank of the second bolt.

6. The pre-sealing pressure head hook claw of a can sealing machine adapted to non-magnetic material can lids as described in claim 4, characterized in that: The inner side of the hook portion includes a first inclined surface that gradually slopes inward from bottom to top and a second inclined surface that gradually slopes outward from bottom to top, with the upper edge of the first inclined surface connected to the lower edge of the second inclined surface.

7. The pre-sealing pressure head hook claw of a can sealing machine adapted to non-magnetic material can lids as described in claim 6, characterized in that: The inclination angle of the first inclined plane is greater than that of the second inclined plane.

8. The pre-sealing pressure head hook claw of a can sealing machine adapted to non-magnetic material can lids as described in claim 2, characterized in that: The lower end of the hook mounting base is provided with a downwardly extending extension, and the lower end of the extension is provided with an arc-shaped surface that slopes inward from bottom to top.

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