Zero point alignment tool and method for lifting cam of can seamer

Abstract

The application discloses a zero point alignment tool and method of a lifting cam of a can sealing machine, and relates to the technical field of the can sealing machine.The tool comprises a positioning plate and a clamping plate, the positioning plate is provided with a positioning hole and a through hole matched with a zipper machine shaft, and the positioning plate and the clamping plate are respectively provided with an arc-shaped notch matched with a center shaft of the can sealing machine and a clamping notch;the method comprises the following steps: determining the equipment zero position of a can supporting seat by the tool, setting a zero scale line, determining the lowest position of the can supporting seat as the height reference of the can supporting seat, adjusting the lifting cam to lift the can supporting seat, and the lifting height is equal to the height difference between the lowest point of the lifting cam and the zero point, and the position is the zero point of the lifting cam.The application determines the equipment zero position by the tool first, then adjusts the lifting cam to determine the lifting zero position of the can supporting seat, realizes the determination of the zero point of the lifting cam, and solves the problems of inconvenient determination of the zero point of the lifting cam and low position precision during the determination of the zero point.

Description

Technical Field

[0001] This invention belongs to the field of can sealing machine technology, and in particular relates to a zero-point alignment tool and method for the lifting cam of a can sealing machine. Background Technology

[0002] The lifting cam of the can sealing machine is an important component for accurately sealing the can lid and the can. The height of the junction point (i.e., the zero point) between the can and the lid must be accurate. To prevent impact and noise during lifting, the cam lifting must be designed with constant acceleration.

[0003] For example, Chinese utility model CN209156959U discloses a can sealing machine with an adjustable number of sealing rings. The can sealing assembly's pressure rod and can support rod are both moved up and down by cams. When the can lid and can body are transported to the designated position, the can support base and the pressure fixing seat press them together to prevent the product from shifting. Then, the pressure motor drives the sealing wheel to revolve, rotating along the contact edge of the can lid and can body, causing the edges of both to roll inward. After the can lid and can body are sealed, the can unloading assembly transports the finished product to the designated position.

[0004] However, because the cam lifting section is a smooth, irregular curve, and the zero point is located within the cam lifting section, determining the zero point during installation is very inconvenient. Currently, domestic installers rely on experience and repeated repositioning to find the zero point, which inevitably introduces errors, resulting in low positional accuracy of the zero point. This makes it difficult to ensure optimal sealing between the can and the lid, thus affecting the overall product quality. Summary of the Invention

[0005] The purpose of this invention is to provide a zero-point alignment tooling and method for the lifting cam of a can sealing machine. First, the zero position of the equipment is determined by the alignment tooling, and then the lifting cam is adjusted to determine the lifting zero position of the can holder, thereby realizing the determination of the zero point of the lifting cam. This solves the problems of inconvenience in determining the zero point of the existing lifting cam and low position accuracy when determining the zero point.

[0006] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution:

[0007] This invention relates to a zero-point alignment fixture for a lifting cam of a can sealing machine, comprising a positioning plate and a clamping plate. The positioning plate has a positioning hole and a through hole that mates with the shaft of a zipper machine. The side of the positioning plate has an arc-shaped groove that mates with the central shaft of the can sealing machine. The clamping plate has a clamping groove that mates with the central shaft of the can sealing machine. The clamping plate and the positioning plate are connected by screws and are used to clamp the can sealing machine to the central shaft through the arc-shaped groove and the clamping groove. The through hole is fitted onto the shaft of the zipper machine, and the center of the positioning hole is the rotation center position of the can support.

[0008] A method for aligning the zero point of a lifting cam in a can sealing machine includes the following steps:

[0009] Step 1: Install the alignment fixture; fit the through hole of the positioning plate onto the zipper machine shaft, connect the positioning plate and the clamping plate so that the arc-shaped groove and the clamping groove are clamped on the central shaft of the can sealing machine, and then fix the alignment fixture.

[0010] Step 2: Determine the zero position of the can holder; rotate the turret of the can sealing machine to make any can holder correspond to the position of the positioning hole on the positioning plate, and adjust the can holder to be concentric with the positioning hole, and disassemble the alignment tooling.

[0011] Step 3: Set the zero-point scale line on the turret, fix the zero-point pointer on the can sealing machine, and align the zero-point pointer with the zero-point scale line;

[0012] Step 4: Loosen the fixing screws on the lifting cam mounting adjustment plate and rotate the turret so that the can support is at its lowest position in the vertical direction. Using the height of the can support at this time as a reference, rotate the turret in the opposite direction so that the zero pointer is aligned with the zero scale line, and then fix the turret.

[0013] Step 5: Manually rotate the lifting cam installation adjustment plate to raise the can support using the lifting cam. The height of the can support should be equal to the height difference between the lowest point of the lifting cam and the zero point. At this time, the zero point of the lifting cam coincides with the zero point of the equipment. This is the zero point of the lifting cam. Tighten the fixing screws of the lifting cam installation adjustment plate.

[0014] As a preferred embodiment of the present invention, in step two, determining the concentric position of the can support and the positioning hole using a dial indicator includes fixing the dial indicator to the can support with the dial indicator needle close to the inner wall of the positioning hole; rotating the can support and adjusting the turret position according to the pointer movement of the dial indicator until the dial indicator needle moves within the specified range after one full rotation of the can support.

[0015] As a preferred technical solution of the present invention, after the can holder and the positioning hole are concentric in step two, the fixing screws between the positioning plate and the clamping plate are loosened, so that the alignment fixture can move axially along the central axis of the can sealing machine and the zipper machine axis, and the can holder can pass through the positioning hole to determine that the can holder and the positioning hole are concentric.

[0016] As a preferred embodiment of the present invention, it further includes a standard gauge block, the height of which is the height difference between the lowest point of the lifting cam and the zero point. In step four, after the can holder is at its lowest position in the vertical direction, the standard gauge block is placed on the upper surface of the can holder, and a dial indicator is fixed on the can sealing machine. The dial indicator needle is brought into close contact with the upper surface of the standard gauge block, and the dial indicator is zeroed before removing the standard gauge block. In step five, the lifting cam is rotated to install the adjustment plate, and the lifting cam is used to raise the can holder until the upper surface of the can holder contacts the dial indicator needle and the dial indicator reading returns to zero.

[0017] As a preferred technical solution of the present invention, after the zero point of the lifting cam is confirmed in step five, the alignment fixture is installed so that the alignment fixture can move axially along the central axis of the can sealing machine and the zipper machine axis, and the can holder can pass through the positioning hole to detect whether the position of the can holder has shifted.

[0018] The present invention has the following beneficial effects:

[0019] This invention first uses a positioning fixture to align with the central shaft of the can sealing machine and the shaft of the zipper machine to determine the position of the positioning hole. The positioning hole is then used to determine the horizontal position of the can holder, thus determining the zero position of the equipment. Next, by adjusting the lifting cam and detecting the lifting height of the can holder, the zero position of the can holder is determined. By aligning the zero position of the can holder with the zero position of the equipment, the zero point position of the lifting cam is determined, effectively improving the convenience and accuracy of zero point determination and ensuring the sealing effect between the can and the lid.

[0020] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the zero-point alignment tooling for the lifting cam of a can sealing machine according to the present invention;

[0023] Figure 2 This is a schematic diagram of the zero point of the lifting cam;

[0024] Figure 3 This is a flowchart of a zero-point alignment method for a lifting cam of a can sealing machine according to the present invention;

[0025] Figure 4A schematic diagram of the structure after the alignment tooling and the central shaft of the can sealing machine are installed;

[0026] Figure 5 for Figure 4 Sectional view at point AA;

[0027] Figure 6 This is a schematic diagram of the structure when using standard gauge blocks and a dial indicator in Example 2;

[0028] The attached diagram lists the components represented by each number as follows:

[0029] 1-Positioning plate, 2-Clamping plate, 3-Zipper machine shaft, 4-Can sealing machine central shaft, 5-Can support seat, 6-Turret, 7-Lifting cam, 101-Positioning hole, 102-Through hole, 103-Arc groove, 201-Clamping groove, 501-Dial indicator, 502-Standard gauge block, 601-Zero pointer, 701-Lifting cam mounting and adjusting plate, 702-Lifting section, 703-Zero point. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] In the description of this invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around", etc., which indicate orientation or positional relationship, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this invention.

[0032] Example 1

[0033] Please see Figure 1 As shown, the present invention is a zero-point alignment tool for a lifting cam of a can sealing machine, including a positioning plate 1 and a clamping plate 2; the positioning plate 1 has a positioning hole 101 and a through hole 102 that cooperates with the zipper shaft 3, and the side of the positioning plate 1 has an arc-shaped groove 103 that cooperates with the central shaft 4 of the can sealing machine.

[0034] The clamping plate 2 has a clamping slot 201 that mates with the central shaft 4 of the can sealing machine. The clamping plate 2 is connected to the positioning plate 1 by screws and is used to clamp the central shaft 4 of the can sealing machine through the arc-shaped slot 103 and the clamping slot 201. The through hole 102 is fitted onto the zipper machine shaft 3, and the center of the positioning hole 101 is the rotation center position of the can support.

[0035] By cooperating with the alignment fixture and the central shaft 4 of the can sealing machine and the shaft 3 of the zipper machine, the position is positioned. The position of the positioning hole 101 is the designed position of the rotation center of the can support 5 in the can sealing machine. That is, when the positioning hole 101 is concentric with the can support 5, the actual rotation center position of the can support 5 is consistent with the design requirement of the equipment.

[0036] like Figure 3 As shown, the method for aligning the zero point of the lifting cam of the can sealing machine using the above-mentioned alignment fixture includes the following steps:

[0037] Step 1: As Figure 1 and 4 As shown, install the alignment fixture, fit the through hole 102 of the positioning plate 1 onto the zipper machine shaft 3, connect the positioning plate 1 and the clamping plate 2, so that the arc-shaped groove 103 and the clamping groove 201 are clamped on the central shaft 4 of the can sealing machine, and then tighten the screws to fix the alignment fixture.

[0038] Step 2: Determine the zero position of the can holder 5; rotate the turret 6 of the can sealing machine so that any can holder 5 corresponds to the position of the positioning hole 101 of the positioning plate 1, and adjust the can holder 5 to be in a concentric position with the positioning hole 101, and disassemble the alignment tooling.

[0039] The concentric position of the can holder 5 and the positioning hole 101 can be determined by using a dial indicator. Specifically, the dial indicator is fixed to the can holder 5 with a magnetic base, and the dial indicator needle is pressed tightly against the inner wall of the positioning hole 101 with a certain amount of pressure.

[0040] Rotate the tank support 5 so that the dial indicator needle moves along the inner wall of the positioning hole 101. Adjust the position of the turret 6 according to the pointer movement of the dial indicator until the tank support 5 rotates one full turn and the pointer movement of the dial indicator is within the specified range. At this time, the rotation center position of the tank support 5 is concentric with the center position of the positioning hole 101, which is the zero position of the tank support 5.

[0041] Step 3: As Figure 5 As shown, after the zero position of the can holder 5 is determined, a zero position scale line is set on the turret 6, and a fixed zero position pointer 601 is installed on the can sealing machine and aligned with the zero position scale line, thereby marking the zero position of the can holder 5.

[0042] Step Four: As Figure 2 and 5 As shown, loosen the fixing screws on the lifting cam mounting adjustment plate 701 and rotate the turret 6 so that the can support 5 is in the lowest position in the vertical direction, that is, the can support 5 is rotated to the horizontal section of the lowest position of the cam groove of the lifting cam 7. Using the height of the can support 5 at this time as a reference, rotate the turret 6 in the opposite direction so that the zero pointer 601 is aligned with the zero scale line and fix the turret 6.

[0043] Step 5: Manually rotate the lifting cam mounting adjustment plate 701 to adjust the circumferential position of the lifting cam 7. Use the lifting cam 7 to lift the can holder 5 and detect the lifting height of the can holder 5 relative to the reference position. The lifting height of the can holder 5 is equal to the height difference between the lowest point and the zero point of the lifting cam 7.

[0044] like Figure 2 As shown, the zero point 703 of the lifting cam 7 is located at the lifting section 702. The lifting section 702 is used to lift the can holder 5. The height difference between the zero point 703 and the lowest point of the horizontal section of the lifting cam 7 is d, which is the height to be lifted when the can holder 5 is located at the zero point 703.

[0045] By adjusting the lifting cam 7, the height difference d between the lifting height of the can support 5 and the zero point 703 relative to the lowest point of the horizontal section of the lifting cam 7 is equal. At this time, the lifting zero point of the can support 5 coincides with the zero point of the equipment, that is, the position of the can support 5 is the zero point 703 of the lifting cam 7, thereby achieving accurate determination of the zero point 703 of the lifting cam 7. Tighten the fixing screws of the lifting cam mounting adjustment plate 701 to adjust the position of the lifting cam 7.

[0046] Example 2

[0047] Based on Example 1, after determining that the can holder 5 and the positioning hole 101 are concentric in step 2, the fixing screws between the positioning plate 1 and the clamping plate 2 are loosened, so that the alignment fixture can move along the axial direction of the can sealing machine central axis 4 and the zipper machine axis 3. When the positioning fixture moves down, the can holder 5 can pass through the positioning hole 101, indicating that the position of the can holder 5 has not moved. This is used to determine that the position of the can holder 5 and the positioning hole 101 are concentric and the position is correctly aligned.

[0048] Meanwhile, after confirming the zero point 703 of the lifting cam 7 in step five, the alignment fixture is installed. This allows the alignment fixture to move axially along the central shaft 4 of the can sealing machine and the shaft 3 of the zipper machine, and allows the can holder 5 to pass through the positioning hole 101. This is used to check whether the position of the can holder 5 has shifted. If the can holder 5 can pass through the positioning hole 101, it means that the position is correctly aligned and the zero point 703 of the lifting cam 7 has been confirmed. If the can holder 5 cannot pass through the positioning hole 101, it means that the position of the can holder 5 has shifted unexpectedly during the alignment process, and the position is incorrectly aligned. It needs to be re-established according to the above steps.

[0049] Example 3

[0050] like Figure 2 and 6As shown, based on Embodiment 1 or Embodiment 2, a standard gauge block 502 is also made, the height of which is equal to the height difference d between the lowest point of the lifting cam 7 and the zero point 703.

[0051] In step four, after the can holder 5 is at its lowest position in the vertical direction, the standard gauge block 502 is placed on the upper surface of the can holder 5, and the dial indicator 501 is fixed on the can sealing machine by a magnetic base. The needle of the dial indicator 501 is pressed tightly against the upper surface of the standard gauge block 502 to ensure a certain amount of pressure. The dial indicator 501 is then zeroed, and the standard gauge block 502 is removed.

[0052] In step five, rotating the lifting cam to install the adjustment plate 701 raises the can support 5. When the upper surface of the can support 5 contacts the needle of the dial indicator 501 and the dial indicator 501 returns to zero, it indicates that the lifting height of the can support 5 is equal to the height difference d between the zero point 703 and the lowest point of the horizontal section of the lifting cam 7. This makes it easier and more accurate to determine the lifting height of the can support 5, which helps to improve the overall alignment efficiency and the accuracy of the zero point position.

[0053] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0054] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A method for zero-point alignment of a lifting cam in a can sealing machine, characterized in that, Includes the following steps: Step 1: Install the alignment fixture; the alignment fixture includes a positioning plate (1) and a clamping plate (2); the positioning plate (1) has a positioning hole (101) and a through hole (102) that cooperates with the zipper machine shaft, and the side of the positioning plate (1) has an arc-shaped groove (103) that cooperates with the central shaft of the can sealing machine. The clamping plate (2) is provided with a clamping slot (201) that cooperates with the central shaft of the can sealing machine. The clamping plate (2) and the positioning plate (1) are connected by screws. The clamping plate (2) is used to clamp the central shaft of the can sealing machine through the arc-shaped slot (103) and the clamping slot (201). The through hole (102) is sleeved on the zipper machine shaft, and the center of the positioning hole (101) is the rotation center position of the can support. The through hole (102) of the positioning plate (1) is fitted onto the zipper shaft, and the positioning plate (1) and the clamping plate (2) are connected so that the arc-shaped groove (103) and the clamping groove (201) are clamped on the central shaft of the can sealing machine, and the alignment tooling can be fixed. Step 2: Determine the zero position of the can holder; rotate the turret of the can sealing machine so that any can holder corresponds to the position of the positioning hole (101) of the positioning plate (1), and adjust the can holder to be in the same position as the positioning hole (101), and disassemble the alignment tooling. Step 3: Set the zero-point scale line on the turret, fix the zero-point pointer on the can sealing machine, and align the zero-point pointer with the zero-point scale line; Step 4: Loosen the fixing screws on the lifting cam mounting adjustment plate and rotate the turret so that the can support is at its lowest position in the vertical direction. Using the height of the can support at this time as a reference, rotate the turret in the opposite direction so that the zero pointer is aligned with the zero scale line, and then fix the turret. Step 5: Manually rotate the lifting cam installation adjustment plate to raise the can support using the lifting cam. The height of the can support should be equal to the height difference between the lowest point of the lifting cam and the zero point. At this time, the zero point of the lifting cam coincides with the zero point of the equipment. This is the zero point of the lifting cam. Tighten the fixing screws of the lifting cam installation adjustment plate.

2. The zero-point alignment method for the lifting cam of a can sealing machine according to claim 1, characterized in that, In step two, the concentric position of the tank support and the positioning hole (101) is determined by a dial indicator. This includes fixing the dial indicator to the tank support with the dial indicator needle close to the inner wall of the positioning hole (101); rotating the tank support and adjusting the turret position according to the pointer movement of the dial indicator until the dial indicator needle moves within the specified range after the tank support has rotated one full turn.

3. The zero-point alignment method for the lifting cam of a can sealing machine according to claim 2, characterized in that, In step two, after the can holder and the positioning hole (101) are concentric, the fixing screws between the positioning plate (1) and the clamping plate (2) are loosened so that the alignment fixture can move along the axial direction of the can sealing machine center axis and the zipper machine axis, and so that the can holder can pass through the positioning hole (101) to determine that the can holder and the positioning hole (101) are concentric.

4. A method for zero-point alignment of a lifting cam in a can sealing machine according to claim 2 or 3, characterized in that, It also includes a standard gauge block (3), the height of which is the height difference between the lowest point of the lifting cam and the zero point; In step four, after the can holder is at its lowest position in the vertical direction, the standard gauge block (3) is placed on the upper surface of the can holder, and a dial indicator is fixed on the can sealing machine. The dial indicator needle is pressed against the upper surface of the standard gauge block (3), the dial indicator is zeroed, and then the standard gauge block (3) is removed. In step five, the lifting cam is rotated to install the adjustment plate, and the lifting cam is used to raise the can support. When the upper surface of the can support contacts the dial indicator needle and the dial indicator reading returns to zero, the can support is ready.

5. The zero-point alignment method for the lifting cam of a can sealing machine according to claim 1, characterized in that, After confirming the zero point of the lifting cam in step five, the alignment fixture is installed so that it can move axially along the central axis of the can sealing machine and the zipper machine shaft, and the can holder can pass through the positioning hole (101) to detect whether the position of the can holder has shifted.

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