Knurling machine ejector rod assembly with self-lubricating function

Abstract

The invention discloses a knurling machine ejector rod assembly with a self-lubricating function, and relates to the technical field of knurling machines, the knurling machine ejector rod assembly comprises a knurling outer die and a knurling wheel arranged in the knurling outer die, a film shell is fixedly arranged outside the knurling outer die, a transmission sleeve is rotatably arranged in the film shell, an eccentric sliding block is slidably mounted in the transmission sleeve, and a knurling roller is arranged in the transmission sleeve. The lower end of the transmission sleeve is fixedly connected with a hollow pipe, a knurling ejector rod used for driving the eccentric sliding block to move in the radial direction is inserted into the hollow pipe, and a knuckle bearing used in cooperation with the knurling ejector rod is installed in the eccentric sliding block. The knurled ejector rod comprises a rod body movably inserted into the hollow pipe. The joint bearing is additionally arranged between the traditional knurling ejector rod and the eccentric sliding block, so that the abrasion of the knurling ejector rod when the knurling ejector rod drives the eccentric sliding block to move is effectively reduced, the service life of equipment is prolonged, and the pressure stability of a knurling wheel to the bottom of a paper cup is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of knurling machines, and in particular to a knurling machine top rod assembly with a self-lubricating function. Background Art

[0002] In the production process of paper cups, it is necessary to perform knurling on the bottom of the paper cups. The knurling operation is generally completed by a knurling machine. In the knurling machine top rod assembly, the knurling top rod is generally used to drive the eccentric slider to move, and then drive the knurling wheel to perform the knurling operation. However, there is hard friction between the rod head of the traditional knurling top rod and the eccentric slider. This friction will cause wear of the knurling top rod and the eccentric slider, thereby affecting the pressure of the knurling wheel on the bottom of the paper cup and the quality of the finished product. In addition, since the rod head of the knurling top rod and the hole of the eccentric slider are severely worn, spare parts need to be replaced frequently, which significantly increases the equipment maintenance cost and downtime, affecting production efficiency. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention provides a knurling machine top rod assembly with a self-lubricating function, which solves the technical problems raised in the above-mentioned background technology.

[0004] In order to solve the above technical problems, the present invention provides the following technical solutions: a knurling machine push rod assembly with self-lubricating function, comprising a knurling outer mold and a knurling wheel arranged inside the knurling outer mold, a membrane shell is fixedly arranged outside the knurling outer mold, a transmission sleeve is rotatably arranged inside the membrane shell, an eccentric slider is slidably installed inside the transmission sleeve, and a hollow tube is fixedly connected to the lower end of the transmission sleeve, a knurling push rod for driving the eccentric slider to move radially is inserted inside the hollow tube, and a joint bearing used in conjunction with the knurling push rod is installed inside the eccentric slider; The knurled push rod includes a rod body movably inserted into the inside of the hollow tube, the upper end of the rod body extends to the eccentric slider and is fixedly installed with a spherical crown-shaped rod head, the joint bearing includes a bearing outer ring fixedly installed inside the eccentric slider, a bearing inner ring for inserting the rod head is movably arranged inside the bearing outer ring, a plurality of circumferentially evenly distributed balls are arranged on the outer edge of the bearing inner ring, the balls are fitted with the inner wall of the bearing outer ring, and an oil filling groove surrounding the outer periphery of the bearing inner ring is also opened inside the bearing outer ring, and a plurality of self-lubricating components are arranged in the oil filling groove for automatically lubricating the balls as they roll.

[0005] Furthermore, the self-lubricating component includes a sponge fixedly mounted on the outer ring of the bearing, the inner wall of the outer ring of the bearing is provided with a groove for installing the sponge, the inner wall of the groove is provided with a flow channel connected to the oil filling groove, and an oil replenishing mechanism is arranged inside the flow channel.

[0006] Furthermore, the oil replenishing mechanism comprises a bracket fixedly mounted on the inner wall of the oil filling tank, a sliding rod is slidably mounted inside the bracket, and a sealing plate for blocking the flow channel is fixedly mounted on one end of the sliding rod.

[0007] Furthermore, a first spring is sleeved on the outside of the sliding rod, and two ends of the first spring are fixedly mounted on the bracket and the sealing plate respectively.

[0008] Furthermore, a linkage mechanism for controlling the opening and closing of the sealing plate is also provided inside the oil filling groove, and the linkage mechanism includes a bending rod fixedly installed on the end of the sliding rod, and an insertion rod is fixedly provided on the upper end of the bending rod. The insertion rod is parallel to the sliding rod, and a slot for the insertion rod to slide is opened inside the outer ring of the bearing, and an airbag is also installed inside the slot, and the lower end of the insertion rod abuts against the airbag.

[0009] Furthermore, the inner wall of the bearing outer ring is also provided with a through slot connected to the slot, and an extrusion rod is rotatably installed inside the through slot, one end of the extrusion rod abuts against the airbag, and the other end of the extrusion rod extends to the outside of the through slot.

[0010] Furthermore, a circulation groove is provided inside the sponge.

[0011] Furthermore, an oil hole is provided on one side of the top of the bearing outer ring.

[0012] Furthermore, a transmission gear is fixedly mounted on the lower end of the hollow tube, a connector is mounted on the lower end of the rod body, a second spring is fixedly mounted on one side of the eccentric slider, and an end of the second spring is fixedly mounted on the inner wall of the transmission sleeve.

[0013] By means of the above technical solution, the present invention provides a knurling machine top rod assembly with a self-lubricating function, which has at least the following beneficial effects: 1. The present invention effectively reduces the wear of the knurled push rod when driving the eccentric slider to move by adding a joint bearing between the traditional knurled push rod and the eccentric slider, thereby extending the service life of the equipment and ensuring the pressure stability of the knurled wheel on the bottom of the paper cup. In addition, a self-lubricating component is also provided inside the joint bearing, which can automatically lubricate the ball during the swing of the knurled push rod, making the swing of the knurled push rod smoother and preventing jamming, thereby greatly improving the reliability and production efficiency of the equipment.

[0014] 2. The present invention can automatically adjust the opening and closing state of the sealing plate according to the movement of the knurled ejector rod by setting up an oil replenishing mechanism and a linkage mechanism, so that the equipment can automatically replenish lubricating oil to the sponge when working, thereby ensuring continuous lubrication of the ball bearings, maintaining optimal working conditions, and ensuring stable operation of the equipment.

[0015] 3. The present invention can increase the contact area between the sponge and the lubricating oil by providing a flow groove in the sponge, thereby promoting the absorption of the lubricating oil by the sponge. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings: Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 is a cross-sectional view of the present invention; Figure 3 It is a schematic diagram of the structure of the spherical bearing and the knurled ejector rod of the present invention; Figure 4 It is a schematic diagram of the connection between the spherical bearing and the knurled ejector rod of the present invention; Figure 5 for Figure 4 The enlarged view of point A is shown; Figure 6 It is a schematic structural diagram of the oil replenishing mechanism of the present invention.

[0017] In the figure: 1. knurled outer mold; 2. knurled wheel; 3. membrane shell; 4. transmission sleeve; 5. eccentric slider; 6. hollow tube; 7. knurled push rod; 71. rod body; 72. rod head; 8. spherical bearing; 81. bearing outer ring; 82. bearing inner ring; 83. ball; 84. oil filling groove; 85. self-lubricating component; 851. sponge; 8511. flow groove; 852. groove; 853. flow channel; 854. oil replenishing mechanism; 8541. bracket; 8542. slide rod; 8543. sealing plate; 8544. first spring; 855. linkage mechanism; 8551. bending rod; 8552. insertion rod; 8553. slot; 8554. air bag; 8555. through groove; 8556. extrusion rod; 86. oil hole; 9. transmission gear; 10. connector; 11. second spring. DETAILED DESCRIPTION

[0018] 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.

[0019] Embodiment 1:

[0020] There is hard friction between the rod head of the traditional knurled ejector and the eccentric slider. This friction will cause wear of the knurled ejector and the eccentric slider, which will affect the pressure of the knurling wheel on the bottom of the paper cup and the quality of the finished product. In order to solve the friction problem between the knurled ejector and the eccentric slider, please refer to Figure 1-Figure 6 The present invention provides a knurling machine top rod assembly with a self-lubricating function, which can reduce the wear of the knurling top rod and extend the service life of the equipment. The knurling machine top rod assembly is based on a knurling outer mold 1 and a knurling wheel 2 arranged inside the knurling outer mold 1. A membrane shell 3 is fixedly arranged on the outside of the knurling outer mold 1, and a transmission sleeve 4 is rotatably arranged inside the membrane shell 3. An eccentric slider 5 is slidably installed inside the transmission sleeve 4, and a hollow tube 6 is fixedly connected to the lower end of the transmission sleeve 4. A knurling top rod 7 for driving the eccentric slider 5 to move radially is inserted inside the hollow tube 6. A joint bearing 8 used in conjunction with the knurling top rod 7 is installed inside the eccentric slider 5. A transmission gear 9 is fixedly sleeved at the lower end of the hollow tube 6. A connector 10 is installed at the lower end of the rod body 71. A second spring 11 is fixedly installed on one side of the eccentric slider 5. The second spring The end 11 is fixedly installed on the inner wall of the transmission sleeve 4, the transmission gear 9 is used to connect to the external transmission device to drive the transmission sleeve 4 to rotate, and the connecting head 10 is used to connect to the external driving device to push the knurled push rod 7 to swing, and the radial movement of the eccentric slider 5 is driven by the swing of the knurled push rod 7. When the knurled push rod 7 is not subjected to force, the eccentric slider 5 can be reset by the second spring 11 to complete an action cycle. In this scheme, adding a joint bearing 8 to the traditional eccentric slider 5 can reduce the friction force on the knurled push rod 7, and reduce the wear on the knurled push rod 7 by avoiding direct contact between the knurled push rod 7 and the eccentric slider 5, thereby ensuring the stability of the pressure applied by the knurled wheel 2 to the bottom of the paper cup and the quality of the product.

[0021] In order to achieve the cooperation between the knurled push rod 7 and the spherical joint bearing 8, the knurled push rod 7 is set as a rod body 71 movably inserted into the inside of the hollow tube 6, the upper end of the rod body 71 extends to the eccentric slider 5 and a spherical crown-shaped rod head 72 is fixedly installed, and the spherical joint bearing 8 is set as a bearing outer ring 81 fixedly installed inside the eccentric slider 5, and a bearing inner ring 82 for the rod head 72 to be inserted is movably arranged inside the bearing outer ring 81, and a plurality of circumferentially evenly distributed balls 83 are arranged on the outer edge of the bearing inner ring 82, and the balls 83 are fitted with the inner wall of the bearing outer ring 81, and the bearing outer ring 81 is also provided with an oil filling groove 84 surrounding the outer periphery of the bearing inner ring 82, and a plurality of oil filling grooves 84 are arranged in the oil filling groove 84 for rolling with the balls 83. A self-lubricating component 85 is provided for automatically lubricating the bearing. Multiple self-lubricating components 85 correspond to multiple balls 83 respectively. The swing of the rod body 71 can drive the rod head 72 to swing. The swing of the rod head 72 can drive the bearing outer ring 81 and the eccentric slider 5 on the bearing outer ring 81 to slide through the bearing inner ring 82. Compared with the traditional method of directly driving the eccentric slider 5 to slide through the knurled push rod 7, the setting of the joint bearing 8 can effectively reduce the wear of the knurled push rod 7, and the bearing inner ring 82 can drive the ball 83 to roll when it swings in the bearing outer ring 81. When the ball 83 rolls, the self-lubricating component 85 can automatically lubricate the ball 83, increase the smoothness of the rolling of the ball 83, and prevent the knurled push rod 7 from getting stuck.

[0022] In order to achieve the lubrication effect of the self-lubricating component 85 on the ball 83, a sponge 851 fixedly installed on the bearing outer ring 81 is provided. The inner wall of the bearing outer ring 81 is provided with a groove 852 for the sponge 851 to be installed. The inner wall of the groove 852 is provided with a flow channel 853 connected to the oil filling groove 84. The swing of the rod body 71 can drive the bearing inner ring 82 to swing through the rod head 72, thereby driving the ball 83 to roll. When the ball 83 rolls onto the sponge 851, it can squeeze the sponge 851. Lubricating oil is added to the inside of the sponge 851. After the sponge 851 is squeezed, the lubricating oil can flow out and flow to the inner wall of the bearing outer ring 81 and the ball 83. When the ball 83 rolls along the inner wall of the bearing outer ring 81, the lubricating oil can greatly reduce the friction between the two, prevent the bearing inner ring 82 from getting stuck in the bearing outer ring 81, and make the swing of the rod head 72 smoother, which is conducive to the radial movement of the eccentric slider 5.

[0023] Embodiment 2:

[0024] As the lubricating oil is squeezed out, the lubricating oil in the sponge 851 will gradually decrease. If the lubricating oil is not continuously added to the sponge 851, the lubricating effect of the sponge 851 on the ball 83 will be affected. In order to solve this technical problem, an oil replenishing mechanism 854 is provided inside the flow channel 853. The oil replenishing mechanism 854 includes a bracket 8541 fixedly mounted on the inner wall of the oil filling groove 84, a sliding rod 8542 is slidably mounted inside the bracket 8541, and a sealing plate 8543 for blocking the flow channel 853 is fixedly mounted at one end of the sliding rod 8542. A large amount of lubricating oil is added to the oil filling groove 84. After opening the sealing plate 8543, the flow channel 853 will be connected to the oil filling groove 84, and the lubricating oil in the oil filling groove 84 can enter the groove 852 along the flow channel 853 and be absorbed by the sponge 851. Therefore, the replenishment of the lubricating oil in the sponge 851 can be controlled by controlling the opening and closing of the sealing plate 8543.

[0025] When the equipment is not in use, there is no need to add lubricating oil to the sponge 851, which requires the sealing plate 8543 to close automatically. Therefore, a first spring 8544 is also sleeved on the outside of the sliding rod 8542, and the two ends of the first spring 8544 are respectively fixedly mounted on the bracket 8541 and the sealing plate 8543. The sealing plate 8543 can enter the flow channel 853 through the elastic force of the first spring 8544 to achieve a closing action. The setting of the first spring 8544 can prevent the sealing plate 8543 from opening automatically, thereby avoiding waste of lubricating oil.

[0026] When the equipment is in use, it is necessary to add lubricating oil to the sponge 851, which requires controlling the sealing plate 8543 to open. Therefore, a linkage mechanism 855 for controlling the opening and closing of the sealing plate 8543 is also provided inside the oil filling groove 84, wherein a bending rod 8551 is fixedly installed at the end of the sliding rod 8542, and an insertion rod 8552 is fixedly installed at the upper end of the bending rod 8551, and the insertion rod 8552 is parallel to the sliding rod 8542. A slot 8553 for the insertion rod 8552 to slide is opened inside the outer ring 81 of the bearing, and an air bag 8553 is also installed inside the slot 8553. 554, the lower end of the insertion rod 8552 abuts against the airbag 8554, the inner wall of the bearing outer ring 81 is also provided with a through slot 8555 connected to the slot 8553, and an extrusion rod 8556 is rotatably installed inside the through slot 8555, one end of the extrusion rod 8556 abuts against the airbag 8554, and the other end of the extrusion rod 8556 extends to the outside of the through slot 8555. When the equipment is started, the knurled push rod 7 swings to drive the ball 83 to roll in the bearing outer ring 81. When the ball 83 rolls to the extrusion rod 8556, as the ball 83 continues to roll, the extrusion rod 8556 can be continuously extruded. One end of the pressure rod 8556 is pushed upward, and the other end of the extrusion rod 8556 is continuously pressed downward. The extrusion rod 8556 squeezes the airbag 8554 to deform, and the slot 8553 is pushed outward through the airbag 8554. The slot 8553 drives the slide bar 8542 to move synchronously through the bending rod 8551. At this time, the first spring 8544 is deformed, and the slide bar 8542 can drive the sealing plate 8543 to move out of the flow channel 853, thereby realizing the opening action of the sealing plate 8543, and then the lubricating oil in the oil filling groove 84 can flow into the sponge 851 along the flow channel 853 to realize the Lubrication is automatically replenished by , when the knurled push rod 7 swings in the direction, the ball 83 rolls in the direction, the ball 83 is removed from the squeezing rod 8556, and the sealing plate 8543 can be slid and reset by the elastic force of the first spring 8544, and the flow channel 853 continues to be blocked, and when the ball 83 rolls to the squeezing rod 8556 next time, the sealing plate 8543 can be opened again, and so on and so forth, can achieve that the sealing plate 8543 can be controlled to automatically open every time the ball 83 rolls through an action cycle to add lubricating oil to the sponge 851 once, thereby achieving the self-lubricating effect of the joint bearing 8.

[0027] In order to accelerate the absorption of lubricating oil by the sponge 851 , a flow groove 8511 is opened inside the sponge 851 , which can increase the contact area between the sponge 851 and the lubricating oil, and is beneficial to the absorption of lubricating oil by the sponge 851 .

[0028] When the lubricating oil in the oil filling groove 84 is used up, new lubricating oil needs to be added to the oil filling groove 84. Therefore, an oil hole 86 is provided on the top side of the bearing outer ring 81, and a circular hole matching the oil hole 86 is provided on the knurling wheel 2. The lubricating oil can be added through the circular hole and the oil hole 86.

[0029] The control method of the present invention is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by technicians in this field. The provision of power is also common knowledge in this field. The present invention is mainly used to protect mechanical devices, so the present invention will no longer explain the control method and circuit connection in detail.

[0030] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A knurling machine top rod assembly with a self-lubricating function, comprising a knurling outer die (1) and a knurling wheel (2) arranged inside the knurling outer die (1), characterized in that: A membrane shell (3) is fixedly arranged on the outside of the knurled outer mold (1), a transmission sleeve (4) is rotatably arranged inside the membrane shell (3), an eccentric slider (5) is slidably installed inside the transmission sleeve (4), and a hollow tube (6) is fixedly connected to the lower end of the transmission sleeve (4), a knurled push rod (7) for driving the eccentric slider (5) to move radially is inserted into the inside of the hollow tube (6), and a joint bearing (8) used in conjunction with the knurled push rod (7) is installed inside the eccentric slider (5); The knurled push rod (7) comprises a rod body (71) movably inserted into the hollow tube (6), the upper end of the rod body (71) extending to the inside of the eccentric slider (5) and fixedly mounted with a spherical crown-shaped rod head (72), the joint bearing (8) comprising a bearing outer ring (81) fixedly mounted inside the eccentric slider (5), a bearing inner ring (82) for inserting the rod head (72) being movably arranged inside the bearing outer ring (81), a plurality of circumferentially evenly distributed balls (83) being arranged on the outer edge of the bearing inner ring (82), the balls (83) being fitted with the inner wall of the bearing outer ring (81), and an oil filling groove (84) surrounding the outer periphery of the bearing inner ring (82) being provided inside the bearing outer ring (81), a plurality of self-lubricating components (85) for automatically lubricating the balls (83) as they roll being arranged in the oil filling groove (84).

2. The knurling machine top rod assembly with self-lubricating function according to claim 1, characterized in that: The self-lubricating component (85) comprises a sponge (851) fixedly mounted on the bearing outer ring (81); the inner wall of the bearing outer ring (81) is provided with a groove (852) for mounting the sponge (851); the inner wall of the groove (852) is provided with a flow channel (853) connected to the oil filling groove (84); and an oil replenishing mechanism (854) is arranged inside the flow channel (853).

3. The knurling machine top rod assembly with self-lubricating function according to claim 2, characterized in that: The oil replenishing mechanism (854) comprises a bracket (8541) fixedly mounted on the inner wall of the oil filling groove (84), a sliding rod (8542) being slidably mounted inside the bracket (8541), and a sealing plate (8543) for sealing the flow channel (853) being fixedly mounted at one end of the sliding rod (8542).

4. The knurling machine top rod assembly with self-lubricating function according to claim 3, characterized in that: A first spring (8544) is also sleeved on the outside of the sliding rod (8542), and two ends of the first spring (8544) are respectively fixedly mounted on the bracket (8541) and the sealing plate (8543).

5. The knurling machine top rod assembly with self-lubricating function according to claim 1, characterized in that: The oil filling groove (84) is also provided with a linkage mechanism (855) for controlling the opening and closing of the sealing plate (8543). The linkage mechanism (855) includes a bending rod (8551) fixedly mounted on the end of the sliding rod (8542). An insertion rod (8552) is fixedly mounted on the upper end of the bending rod (8551). The insertion rod (8552) is parallel to the sliding rod (8542). A slot (8553) for the insertion rod (8552) to slide is provided inside the bearing outer ring (81). An airbag (8554) is also installed inside the slot (8553). The lower end of the insertion rod (8552) abuts against the airbag (8554).

6. The knurling machine top rod assembly with self-lubricating function according to claim 5, characterized in that: The inner wall of the bearing outer ring (81) is further provided with a through slot (8555) connected to the slot (8553); an extrusion rod (8556) is rotatably mounted inside the through slot (8555); one end of the extrusion rod (8556) abuts against the airbag (8554), and the other end of the extrusion rod (8556) extends to the outside of the through slot (8555).

7. The knurling machine top rod assembly with self-lubricating function according to claim 3, characterized in that: The sponge (851) is provided with a circulation groove (8511) inside.

8. The knurling machine top rod assembly with self-lubricating function according to claim 1, characterized in that: An oil hole (86) is provided on one side of the top of the bearing outer ring (81).

9. The knurling machine top rod assembly with self-lubricating function according to claim 1, characterized in that: A transmission gear (9) is fixedly mounted on the lower end of the hollow tube (6), a connector (10) is mounted on the lower end of the rod body (71), a second spring (11) is fixedly mounted on one side of the eccentric slider (5), and an end of the second spring (11) is fixedly mounted on the inner wall of the transmission sleeve (4).

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