Device for eliminating deviation of rotating center

Abstract

The invention discloses a device for eliminating rotation center deviation, and relates to the technical field of cantilever type tray winding machines, the device comprises a positioning shell, the interior of the positioning shell is of a hollow cavity structure, and a positioning hole is formed in the axis of the top end of the positioning shell; the neat curved surface body is movably arranged in the cavity of the positioning shell, the outer wall of the neat curved surface body is in clearance fit with the inner wall of the positioning hole, an air cylinder connecting guide rod is vertically and fixedly connected to the top of the neat curved surface body, and the top of the air cylinder connecting guide rod penetrates through the positioning hole and extends to the position above the positioning shell; the bottom plate is fixedly connected to the side, away from the positioning hole, of the positioning shell. According to the invention, the outer wall of the curve of the neat curved surface body is in clearance fit with the inner wall of the positioning hole, so that self-centering positioning is realized, the deviation when the guide rod and the cantilever are not concentric is eliminated, the disc does not deviate any more, and the packaging quality of the tray is improved.

Description

Technical Field

[0001] The invention relates to the technical field of cantilever pallet wrapping machines, and in particular to a device for eliminating rotation center deviation. Background Art

[0002] The cantilever pallet wrapping machine is a highly efficient packaging machine, mainly used for wrapping the goods on the pallet. The goods are tightly wrapped with stretch film to prevent the goods from being damaged by collision, extrusion, etc. during transportation, so as to fix and protect the goods for easy storage and transportation.

[0003] In the prior art, a cantilever pallet wrapping machine must be equipped with a top pressing mechanism during the wrapping process to prevent the pallet top frame from moving. However, due to processing or installation deviations, the center of the top pressing device on the current cantilever pallet wrapping machine does not coincide with the center of the rotating arm, making it difficult to ensure that the cantilever rotation center and the axis of the top pressing mechanism remain consistent, causing the top pressing disc to shift back and forth during the wrapping process, thereby pushing the pallet top frame to move, causing the pallet's external dimensions to change, resulting in a decrease in pallet packaging quality.

[0004] In order to solve the above problems, a device for eliminating the deviation of the rotation center is proposed. Summary of the invention

[0005] The object of the present invention is to provide a device for eliminating the deviation of the rotation center, so as to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: a device for eliminating rotation center offset, comprising:

[0007] A positioning shell, wherein the interior of the positioning shell is a hollow cavity structure, and a positioning hole is opened at the axis center of the top end of the positioning shell;

[0008] A neat curved surface body, wherein the neat curved surface body is movably arranged in the cavity of the positioning shell, the outer wall of the neat curved surface body is gap-matched with the inner wall of the positioning hole, the top of the neat curved surface body is vertically fixedly connected with a cylinder connecting guide rod, and the top of the cylinder connecting guide rod passes through the positioning hole and extends to the top of the positioning shell;

[0009] The bottom plate is fixedly connected to a side of the positioning shell away from the positioning hole.

[0010] Preferably, a wear-resistant bushing is fixedly connected to the inner wall of the positioning hole, the inner cavity of the wear-resistant bushing is in the shape of a truncated cone which is narrow at the top and wide at the bottom, and the wear-resistant bushing is made of any one of polytetrafluoroethylene, nylon or polyester fiber material.

[0011] Preferably, the inner wall of the positioning hole and the outer wall of the wear-resistant bushing are both in the shape of a truncated cone which is narrow at the top and wide at the bottom, and an installation component is provided between the wear-resistant bushing and the positioning shell, and the installation component is used to lock and fix the wear-resistant bushing in the positioning hole.

[0012] Preferably, the installation assembly includes:

[0013] A cylindrical tube, the cylindrical tube is fixedly connected to one end of the wear-resistant bushing away from the neat curved surface body, and the cylindrical tube extends to above the positioning hole;

[0014] A positioning nut is threadedly sleeved on the outer wall of the cylindrical tube, and the diameter of the positioning nut is larger than the diameter of the positioning hole port.

[0015] Preferably, the wear-resistant bushing is composed of two semi-conical tubes spliced ​​together, and the cylindrical tube is composed of two semi-cylindrical tubes spliced ​​together, one end of the semi-conical tube is fixedly connected to the opposite end of the semi-cylindrical tube, and the outer walls of the two semi-cylindrical tubes are provided with external thread grooves matching the cylindrical tubes.

[0016] Preferably, the neat curved body is a sphere, the top and bottom of the neat curved body are provided with horizontal sections, a first connecting mechanism is provided between the neat curved body and the cylinder connecting guide rod, and the neat curved body is fixed to the bottom of the cylinder connecting guide rod through the first connecting mechanism.

[0017] Preferably, the first connecting mechanism comprises:

[0018] A mounting through hole, wherein the mounting through hole is vertically opened at the axis center of the neat curved surface body;

[0019] The truncated cone column, the installation through hole and the truncated cone column are both truncated cone-shaped with a wide top and a narrow bottom, the truncated cone column is vertically inserted into the installation through hole, the top of the truncated cone column is fixedly connected to the bottom end of the cylinder connecting guide rod, and the top diameter of the truncated cone column is larger than the top diameter of the installation through hole;

[0020] An extension screw rod is fixedly connected to the bottom end of the truncated cone column and extends to a position below the neat curved surface body. A limit assembly is provided on the extension screw rod, and the limit assembly is used for blocking and positioning the bottom end of the neat curved surface body.

[0021] Preferably, the limiting assembly includes a clamping nut, which is threadedly connected to the outer wall of the extended screw rod, and an auxiliary pad is provided on the side of the clamping nut close to the neat curved surface, and the diameter of the auxiliary pad is larger than the diameter of the clamping nut.

[0022] Preferably, the neatly curved body is a hollow truncated cone tube body composed of a plurality of petal molds spliced ​​together and having a narrow upper part and a wide lower part shape. An adjustment mechanism is provided between the cylinder connecting guide rod and the neatly curved body, and the adjustment mechanism is used to adjust the expansion size of the neatly curved body.

[0023] Preferably, the adjustment mechanism comprises:

[0024] A neat curved surface body, which is a truncated cone body that is narrow at the top and wide at the bottom. Both ends of the neat curved surface body are fixedly connected with adjusting screws. The adjusting cone is fixedly connected to the bottom end of the cylinder connecting guide rod through one of the adjusting screws, and a plurality of petal molds are wrapped around the outer wall of the adjusting cone;

[0025] A clamping spring, wherein both ends of the outer wall of the plurality of neatly curved surfaces are provided with arc-shaped grooves for sleeve mounting of the clamping spring;

[0026] An adjusting nut, wherein the adjusting nut is threadedly connected to the outer wall of the adjusting screw rod, and a side of the adjusting nut close to the adjusting truncated table is fixedly connected to a limited end cover.

[0027] Compared with the prior art, the technical effects of the present invention are:

[0028] The present invention arranges a neatly curved body in the inner cavity of a positioning shell, and utilizes a positioning hole opened at the top of the positioning shell to connect a cylinder connecting guide rod to the neatly curved body. Thus, when the cylinder connecting guide rod is driven by the cylinder to drive the neatly curved body to move toward the positioning hole, a clearance fit is formed between the curved outer wall of the neatly curved body and the inner wall of the positioning hole, thereby realizing self-centering positioning, eliminating deviation when the guide rod and the cantilever are not concentric, and preventing the disc from being offset, thereby helping to improve the quality of pallet packaging. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of a three-dimensional partial cross-sectional structure of the present invention.

[0030] Figure 2 It is a three-dimensional half-section structural schematic diagram of the positioning shell of the present invention.

[0031] Figure 3 It is a schematic diagram of the front cross-sectional structure of the neatly curved surface body in Example 2 of the present invention.

[0032] Figure 4 This is a schematic diagram of the front cross-sectional structure of the neatly curved surface body in Example 3 of the present invention. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] The present invention provides Figure 1-Figure 4 A device for eliminating rotation center offset is shown.

[0035] Embodiment 1, as Figure 1 As shown, it includes a positioning shell 100, a neat curved body 400 and a bottom plate 200. The interior of the positioning shell 100 is a hollow cavity structure. A positioning hole 101 is opened at the top axis of the positioning shell 100. The neat curved body 400 is movably arranged in the cavity of the positioning shell 100. The outer wall of the neat curved body 400 and the inner wall of the positioning hole 101 are gap-matched. The top of the neat curved body 400 is vertically fixedly connected with a cylinder connecting guide rod 300, and the top of the cylinder connecting guide rod 300 passes through the positioning hole 101 and extends to the top of the positioning shell 100. The plate 200 is fixedly connected to the side of the positioning shell 100 away from the positioning hole 101. When the cylinder connecting guide rod 300 drives the neat curved surface body 400 located in the inner cavity of the positioning shell 100 to move upward, since the diameter of the positioning hole 101 is smaller than the maximum diameter of the neat curved surface body 400, the neat curved surface body 400 can cooperate with the positioning hole 101 to form an automatic positioning effect, thereby eliminating the deviation problem caused by the non-concentricity of the guide rod and the cantilever on the cantilever pallet winding machine, so that the disc no longer deviates, which helps to improve the quality of pallet packaging.

[0036] Embodiment 2, as Figure 2 As shown, a wear-resistant bushing 102 is fixedly connected to the inner wall of the positioning hole 101. The inner cavity of the wear-resistant bushing 102 is in the shape of a truncated cone with a narrow upper part and a wide lower part. The wear-resistant bushing 102 is made of any one of polytetrafluoroethylene, nylon or polyester fiber. Adding the wear-resistant bushing 102 to the inner wall of the positioning hole 101 can protect the position of the positioning hole 101 on the positioning shell 100, so as to prevent the positioning hole 101 from gradually expanding due to the extrusion and friction between the positioning hole 101 and the neat curved surface body 400 and losing its use function, and the matching positioning between the neat curved surface body 400 and the positioning hole 101 can be maintained by replacing the wear-resistant bushing 102. The quality of use; the inner wall of the positioning hole 101 and the outer wall of the wear-resistant bushing 102 are both in the shape of a truncated cone with a narrow top and a wide bottom, and an installation component is provided between the wear-resistant bushing 102 and the positioning shell 100, and the installation component is used to lock and fix the wear-resistant bushing 102 at the position of the positioning hole 101. In this embodiment, since the positioning hole 101 and the wear-resistant bushing 102 are both in the shape of a truncated cone with a narrow top and a wide bottom, and the wear-resistant bushing 102 is subjected to upward pressure, the wear-resistant bushing 102 only needs to maintain the upward thrust to maintain the compression between the inner wall of the positioning hole 101, thereby ensuring the stability of the wear-resistant bushing 102 installed at the position of the positioning hole 101.

[0037] Among them, the installation component includes a cylindrical tube 103 and a positioning nut 104. The cylindrical tube 103 is fixedly connected to one end of the wear-resistant bushing 102 away from the neat curved surface body 400. The cylindrical tube 103 extends above the positioning hole 101. The positioning nut 104 is threadedly sleeved on the outer wall of the cylindrical tube 103. The diameter of the positioning nut 104 is larger than the port diameter of the positioning hole 101. The positioning nut 104 is threadedly connected to the outer wall of the cylindrical tube 103. When the positioning nut 104 is rotated clockwise, the top of the positioning shell 100 is squeezed downward, thereby providing an upward force to the cylindrical tube 103, thereby providing an upward pulling force to the wear-resistant bushing 102. Combined with the shape matching between the wear-resistant bushing 102 and the positioning hole 101, which is narrow at the top and wide at the bottom, the stability of the wear-resistant bushing 102 in the positioning hole 101 can be guaranteed.

[0038] In other embodiments, the wear-resistant bushing 102 can be composed of two semi-conical tubes spliced ​​together, and the cylindrical tube 103 can be composed of two semi-cylindrical tubes spliced ​​together, one end of the semi-conical tube is fixedly connected to the opposite end of the semi-cylindrical tube, and the outer walls of the two semi-cylindrical tubes are provided with external thread grooves matching the cylindrical tube 103, and the wear-resistant bushing 102 is set as a splicing body of two semi-conical tubes, so that a single semi-conical tube can be inserted into the positioning hole 101 from the outside of the positioning shell 100, and can also be taken out from the inside of the positioning shell 100 through the positioning hole 101, thereby facilitating the positioning hole 101 in the positioning shell. The installation positioning or disassembly on 100 can avoid the need for the wear-resistant bushing 102 to extend from the bottom end port of the positioning shell 100 to the positioning hole 101 for installation, which makes the installation of the wear-resistant bushing 102 at the positioning hole 101 more convenient and efficient. At the same time, the cylindrical tube 103 is arranged as a separate structure in conjunction with the wear-resistant bushing 102, and a threaded groove is arranged on its outer wall to cooperate with the positioning nut 104, which can still meet the purpose of squeezing the top end of the positioning shell 100 through the rotation of the positioning nut 104, so that the wear-resistant bushing 102 and the positioning hole 101 port remain squeezed and fixed.

[0039] Embodiment 3, as Figure 3 As shown, the difference between this embodiment and embodiment 1 is that the neat curved body 400 is a sphere, and horizontal sections are arranged on the top and bottom of the neat curved body 400. A first connecting mechanism is arranged between the neat curved body 400 and the cylinder connecting guide rod 300. The neat curved body 400 is fixed to the bottom of the cylinder connecting guide rod 300 through the first connecting mechanism. The outer wall of the sphere is a spherical curved surface, which can cooperate with the positioning hole 101 to form automatic positioning, thereby eliminating the deviation problem caused by the non-concentricity of the guide rod and the cantilever on the cantilever pallet winding machine, so that the disc no longer deviates, thereby improving the quality of pallet packaging.

[0040] Among them, the first connecting mechanism includes a mounting through hole 401, a truncated cone column 402 and an extension screw 403. The mounting through hole 401 is vertically opened at the axis center of the neat curved surface body 400. The mounting through hole 401 and the truncated cone column 402 are both truncated cone-shaped with a wide top and a narrow bottom. The truncated cone column 402 is vertically inserted into the mounting through hole 401. The top of the truncated cone column 402 is fixedly connected to the bottom end of the cylinder connecting guide rod 300. The top diameter of the truncated cone column 402 is larger than the top diameter of the mounting through hole 401. The extension screw 403 is fixedly connected to the bottom end of the truncated cone column 402 and extends to the position below the neat curved surface body 400. A limiting component is provided on the extension screw 403. The limiting component is used for blocking and positioning the bottom end of the neat curved surface body 400. The limiting component includes a clamping nut 404, which is threadedly connected to the outer wall of the extension screw 403. The clamping nut 404 is provided with an auxiliary The diameter of the pad 405 and the auxiliary pad 405 is larger than the diameter of the clamping nut 404; the neat curved body 400 is sleeved on the outer wall of the truncated cone column 402 through the mounting through hole 401, and the shape characteristics of the truncated cone column 402 and the mounting through hole 401 are matched so that the assembly of the neat curved body 400 on the truncated cone column 402 can realize automatic centering, ensuring that the axis of the neat curved body 400 and the cylinder connecting guide rod 300 are on the same vertical line, and the top of the truncated cone column 402 can also reach the top of the neat curved body 400 through the extrusion effect with the mounting through hole 401, and finally, the clamping nut 404 is used to rotate clockwise on the outer wall of the extension screw 403 and move upward, and the auxiliary pad 405 is matched to squeeze the bottom of the neat curved body 400, thereby ensuring that the truncated cone column 402 and the mounting through hole 401 are in close contact, and the stability of the assembly of the neat curved body 400 on the truncated cone column 402 is improved.

[0041] Embodiment 4, as Figure 4 As shown, the difference between this embodiment and embodiment 1 is that the neat curved body 400 is a hollow truncated cone tube body composed of multiple petal molds and is narrow at the top and wide at the bottom. An adjustment mechanism is provided between the cylinder connecting guide rod 300 and the neat curved body 400. The adjustment mechanism is used to adjust the expansion size of the neat curved body 400. The hollow cone tube body composed of multiple petal molds also has a curved outer wall, which cooperates with the positioning hole 101 to eliminate the deviation problem caused by the non-concentricity of the guide rod and the cantilever on the cantilever pallet winding machine, so that the disc no longer shifts, thereby improving the quality of pallet packaging. In addition, the multiple petal molds on the neat curved body 400 can be used to shrink or expand, change the contact position between the outer wall of the neat curved body 400 and the positioning hole 101, and avoid frequent contact between the same position on the neat curved body 400 and the inner wall of the positioning hole 101, which is easy to cause wear and deformation, affecting the accuracy of the self-centering achieved by the cooperation between the neat curved body 400 and the positioning hole 101.

[0042] Among them, the adjustment mechanism includes a neat curved surface body 400, a clamping spring 411 and an adjusting nut 415. The neat curved surface body 400 is a truncated cone body that is narrow at the top and wide at the bottom. Both ends of the neat curved surface body 400 are fixedly connected with adjusting screws 413. The adjusting cone 412 is fixedly connected to the bottom end of the cylinder connecting guide rod 300 through one of the adjusting screws 413. Multiple petal molds are wrapped around the outer wall of the adjusting cone 412. Both ends of the outer walls of the multiple neat curved surface bodies 400 are provided with arc grooves for the clamping springs 411 to be set. The adjusting nut 415 is threadedly connected to the outer wall of the adjusting screw 413. The adjusting nut 415 is fixedly connected to the limited end cover 414 on one side close to the adjusting cone 412, and is adjusted by rotating the adjusting cone. The adjusting nut 415 on the adjusting screw 413 at the upper and lower ends of 412 can adjust the position of the table 412 in the vertical direction inside the neat curved surface body 400, and the inclined surface of the adjusting table 412 can be used to cooperate with the inclined surface of the inner wall of the neat curved surface body 400, and through the elastic clamping effect of the clamping spring 411, the multiple petal molds of the neat curved surface body 400 can expand or contract horizontally, changing the diameter size of the outer wall of the neat curved surface body 400 at different height positions, so that the outer wall of the neat curved surface body 400 can have multiple positions that contact the inner wall of the positioning hole 101, so as to meet the variable use of different outer wall positions on the neat curved surface body 400 and extend the service life of the neat curved surface body 400.

[0043] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A device for eliminating rotation center deviation, characterized in that: include: A positioning shell (100), wherein the interior of the positioning shell (100) is a hollow cavity structure, and a positioning hole (101) is provided at the axis center of the top end of the positioning shell (100); A neatly curved body (400), wherein the neatly curved body (400) is movably disposed in the cavity of the positioning housing (100), an outer wall of the neatly curved body (400) is clearance-matched with an inner wall of the positioning hole (101), a cylinder connecting guide rod (300) is vertically fixedly connected to the top of the neatly curved body (400), and a top of the cylinder connecting guide rod (300) passes through the positioning hole (101) and extends to the top of the positioning housing (100); A bottom plate (200) is fixedly connected to a side of the positioning housing (100) away from the positioning hole (101).

2. A device for eliminating rotation center deviation according to claim 1, characterized in that: A wear-resistant bushing (102) is fixedly connected to the inner wall of the positioning hole (101); the inner cavity of the wear-resistant bushing (102) is in the shape of a truncated cone that is narrow at the top and wide at the bottom; and the wear-resistant bushing (102) is made of any one of polytetrafluoroethylene, nylon or polyester fiber.

3. A device for eliminating rotation center deviation according to claim 2, characterized in that: The inner wall of the positioning hole (101) and the outer wall of the wear-resistant bushing (102) are both in the shape of a truncated cone that is narrow at the top and wide at the bottom, and an installation component is provided between the wear-resistant bushing (102) and the positioning shell (100), and the installation component is used to lock and fix the wear-resistant bushing (102) in the position of the positioning hole (101).

4. The device for eliminating rotation center deviation according to claim 3, characterized in that: The installation assembly includes: A cylindrical tube (103), the cylindrical tube (103) being fixedly connected to an end of the wear-resistant bushing (102) away from the neat curved surface body (400), and the cylindrical tube (103) extending to above the positioning hole (101); A positioning nut (104) is threadedly sleeved on the outer wall of the cylindrical tube (103), and the diameter of the positioning nut (104) is larger than the port diameter of the positioning hole (101).

5. The device for eliminating rotation center deviation according to claim 4, characterized in that: The wear-resistant bushing (102) is composed of two semi-conical tubes spliced ​​together, and the cylindrical tube (103) is composed of two semi-cylindrical tubes spliced ​​together, one end of the semi-conical tube is fixedly connected to the opposite end of the semi-cylindrical tube, and the outer walls of the two semi-cylindrical tubes are provided with external thread grooves matching the cylindrical tube (103).

6. The device for eliminating rotation center deviation according to claim 1, characterized in that: The neat curved surface body (400) is a spherical body. The top and bottom of the neat curved surface body (400) are both provided with horizontal sections. A first connection mechanism is provided between the neat curved surface body (400) and the cylinder connecting guide rod (300). The neat curved surface body (400) is fixed to the bottom of the cylinder connecting guide rod (300) via the first connection mechanism.

7. The device for eliminating rotation center deviation according to claim 6, characterized in that: The first connecting mechanism comprises: A mounting through hole (401), wherein the mounting through hole (401) is vertically opened at the axis center of the neat curved surface body (400); A truncated cone column (402), wherein the installation through hole (401) and the truncated cone column (402) are both truncated cone-shaped and are wide at the top and narrow at the bottom. The truncated cone column (402) is vertically inserted into the installation through hole (401), and the top end of the truncated cone column (402) is fixedly connected to the bottom end of the cylinder connecting guide rod (300). The top diameter of the truncated cone column (402) is larger than the top diameter of the installation through hole (401); An extension screw rod (403) is fixedly connected to the bottom end of the truncated cone column (402) and extends to a position below the neat curved surface body (400). A limit assembly is provided on the extension screw rod (403) and the limit assembly is used for blocking and positioning the bottom end of the neat curved surface body (400).

8. The device for eliminating rotation center deviation according to claim 7, characterized in that: The limiting assembly comprises a clamping nut (404), wherein the clamping nut (404) is threadedly connected to the outer wall of the extension screw rod (403), and an auxiliary pad (405) is provided on a side of the clamping nut (404) close to the neat curved surface body (400), wherein the diameter of the auxiliary pad (405) is greater than the diameter of the clamping nut (404).

9. The device for eliminating rotation center deviation according to claim 1, characterized in that: The neatly curved body (400) is a hollow truncated cone tube body formed by splicing a plurality of petal molds and having a narrow upper part and a wide lower part. An adjustment mechanism is provided between the cylinder connecting guide rod (300) and the neatly curved body (400), and the adjustment mechanism is used to adjust the expansion size of the neatly curved body (400).

10. The device for eliminating rotation center deviation according to claim 9, characterized in that: The regulating mechanism comprises: A neatly curved body (400), the neatly curved body (400) is a truncated cone body that is narrow at the top and wide at the bottom, both ends of the neatly curved body (400) are fixedly connected with adjustment screws (413), the adjustment cone (412) is fixedly connected to the bottom end of the cylinder connecting guide rod (300) through one of the adjustment screws (413), and a plurality of petal molds are wrapped around the outer wall of the adjustment cone (412); A clamping spring (411), wherein both ends of the outer walls of the plurality of neat curved surface bodies (400) are provided with arc-shaped grooves for sleeve mounting of the clamping spring (411); An adjusting nut (415) is threadedly connected to the outer wall of the adjusting screw rod (413), and a side of the adjusting nut (415) close to the adjusting truncated table (412) is fixedly connected to a limiting end cover (414).

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