Positioning mechanism of thermos cup welding bottom device

Abstract

This utility model relates to the field of thermos cup manufacturing technology, and in particular to a positioning mechanism for a thermos cup bottom welding device, comprising: a base frame on which a support frame is fixedly mounted; a centering mechanism for positioning the thermos cup workpiece, comprising: a first gear and a second gear meshing therewith, the second gear having several arc-shaped slots evenly distributed around its circumference; a fixing ring having several sliding grooves evenly distributed around its circumference; several positioning components circumferentially distributed between the fixing ring and the second gear, each positioning component comprising: a sliding block slidingly engaging with the sliding groove, on which a positioning block is fixedly mounted, at least two rollers rotatably mounted, the sliding block having a connecting groove; and an adjusting rod disposed within the connecting groove with one end extending outside the connecting groove and tangentially engaging with the inside of the groove.

Description

Technical Field

[0001] This utility model relates to the field of thermos cup production technology, and in particular to a positioning mechanism for a thermos cup bottom welding device. Background Technology

[0002] In the welding process of thermos cups, the circumferential welding between the bottom plate and the cup body requires extremely high positioning accuracy. Traditional bottom welding devices usually use a precision-machined funnel structure to achieve coaxial positioning of the cup body and the bottom plate. However, during the welding process, cup body tolerance or vibration can easily lead to positioning deviation, causing problems such as weld breakage and mold jamming, and even damaging the mold, affecting production efficiency and yield.

[0003] To address this issue, this utility model proposes a positioning mechanism for a thermos cup welding bottom device. Utility Model Content

[0004] The purpose of this invention is to at least solve one of the aforementioned technical defects.

[0005] Therefore, one objective of this utility model is to provide a positioning mechanism for a thermos cup bottom welding device, so as to solve the problems mentioned in the background art and overcome the shortcomings of the existing technology.

[0006] To achieve the above objectives, one embodiment of this utility model provides a positioning mechanism for a thermos cup bottom welding device, comprising: a base frame on which a support frame is fixedly mounted; a centering mechanism for positioning the thermos cup workpiece, comprising: a first gear and a second gear meshing therewith, the second gear having a plurality of arc-shaped slots evenly distributed circumferentially; a fixing ring having a plurality of sliding grooves evenly distributed circumferentially; a plurality of positioning components circumferentially distributed between the fixing ring and the second gear, each positioning component comprising: a sliding block slidingly engaging with the sliding groove, a positioning block fixedly mounted thereon, at least two rollers rotatably mounted on the positioning block, the sliding block having a connecting groove; an adjusting rod disposed within the connecting groove with one end extending outside the connecting groove and tangentially engaging with the inside of the groove, the bottom of the adjusting rod being fixedly provided with a connecting block slidingly engaging with the connecting groove; and a pressing mechanism for pressing the thermos cup body and the bottom plate together.

[0007] Preferably, in any of the above embodiments, the support frame includes a top plate, a vertical pole is fixedly installed at the bottom of the top plate, the vertical pole is fixedly connected to the base frame, a horizontal plate is fixedly installed on the vertical pole, a through hole is opened on the horizontal plate, and the bottom of the horizontal plate is fixedly connected to the base frame through a support rod.

[0008] Preferably, in any of the above embodiments, the centering mechanism further includes: a support ring, the top of which is fixedly connected to the bottom of the horizontal plate, the inside of which is connected to a through hole; a material platform, the bottom of which is provided with a shaft, the shaft being rotatably engaged with the base frame and extending downward through the base frame; a funnel, fixedly connected to the horizontal plate and passing through the through hole and positioned above the material platform, for guiding the workpiece; and a rotating rod, rotatably configured with the support frame and the base frame, the rotating rod being fixedly connected to the first gear, and a handwheel being fixedly installed on the top of the rotating rod.

[0009] Preferably, in any of the above embodiments, a first support plate is provided at a distance from the top of the fixing ring; a second support plate is provided at a distance from the bottom of the support ring, and the second support plate is fixedly connected to the first support plate; the material platform is located at the center of the fixing ring.

[0010] Preferably, one end of the connecting block is fixedly connected to a spring, and the other end of the spring is connected to the side wall of the connecting groove.

[0011] Preferably, the pressing mechanism comprises: an electric push rod, fixedly mounted on the top plate with its output shaft passing through the top plate; a sliding plate, which is slidably engaged with the upright rod, the top of which is fixedly connected to the output shaft of the electric push rod via an intermediate rod; and a pressing block, the main body of which is conical, used to press cups of different sizes.

[0012] Preferably, in any of the above embodiments, a positioning ring is fixedly installed at the bottom of the sliding plate; a cylindrical rod is fixedly connected to the clamping block, and the cylindrical rod and the positioning ring are in rotational engagement.

[0013] Preferably, any of the above solutions further includes: a rotating mechanism for driving the thermos cup body and the bottom plate to rotate, including a motor, a first pulley, a second pulley and a synchronous belt, wherein the first pulley is fixedly connected to the output shaft of the motor, the second pulley is fixedly connected to the shaft at the bottom of the material platform, and the teeth of the synchronous belt mesh with the tooth grooves of the first pulley and the second pulley.

[0014] Compared with the prior art, the advantages and beneficial effects of this utility model are as follows: Several rollers of the centering mechanism contact the material platform and the outer circle of the cup body. The material platform is designed with the outer circle of the cup body diameter as the outer circle. The material platform rotates actively, driving several cylinders to rotate. Several rollers position the cup body to be round and concentric with the base. The centering size is the same as the outer diameter of the base. The centering size can be adjusted. With the help of springs, the positioning deviation problem during welding is avoided, the risk of weld breakage is avoided, and production efficiency and yield are guaranteed.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a perspective view of an embodiment of the present utility model; Figure 2 This is a schematic diagram of the base frame connection according to an embodiment of the present utility model; Figure 3 This is a schematic diagram of the clamping mechanism according to an embodiment of the present utility model; Figure 4 This is an exploded view of the support ring according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the first gear connection according to an embodiment of the present utility model; Figure 6 This is a schematic diagram of the explosion of the second gear according to an embodiment of the present invention; Figure 7 This is a schematic cross-sectional view of the sliding block according to an embodiment of the present utility model; Figure 8 This is a schematic diagram of the connection of the rotating mechanism according to an embodiment of the present utility model.

[0017] In the diagram: 1. Base frame, 11. Support frame, 1101. Top plate, 1102. Upright pole, 1103. Horizontal plate, 2. Centering mechanism, 21. First gear, 22. Second gear, 23. Fixing ring, 2301. First support plate, 24. Positioning assembly, 2401. Sliding block, 2402. Positioning block, 2403. Roller, 2404. Adjusting rod, 2405. Connecting block, 2406. Spring, 25. Support ring, 2501. Second support plate, 26. Material platform, 2601. Shaft, 27. Funnel, 28. Rotating rod, 2801. Handwheel, 3. Pressing mechanism, 31. Electric push rod, 32. Slide plate, 3201. Positioning ring, 33. Pressing block, 3301. Cylindrical rod, 4. Rotating mechanism, 41. Motor, 42. First pulley, 43. Second pulley, 44. Synchronous belt. Detailed Implementation

[0018] like Figures 1 to 8 As shown, a positioning mechanism for a thermos cup bottom welding device includes a base frame 1, a centering mechanism 2, a pressing mechanism 3, and a rotating mechanism 4.

[0019] Furthermore, a support frame 11 is fixedly provided on the base frame 1; The support frame 11 includes a top plate 1101, and a vertical pole 1102 is fixedly installed at the bottom of the top plate 1101. The vertical pole 1102 is fixedly connected to the base frame 1. A horizontal plate 1103 is fixedly installed on the vertical pole 1102. A through hole is opened on the horizontal plate 1103. The bottom of the horizontal plate 1103 is fixedly connected to the base frame 1 through a support rod.

[0020] Furthermore, the centering mechanism 2 is used to position the thermos cup workpiece, including: The first gear 21 and the second gear 22 meshing with it, the second gear 22 has a number of arc-shaped slots, which are evenly distributed around the circumference of the second gear 22. The fixing ring 23 has several sliding grooves that are evenly distributed around its circumference. Several positioning components 24 are circumferentially distributed between the fixed ring 23 and the second gear 22. Each set of positioning components 24 includes: The sliding block 2401 is slidably engaged with the sliding groove, and a positioning block 2402 is fixedly installed on it. At least two rollers 2403 are rotatably installed on the positioning block 2402, and a connecting groove is provided on the sliding block 2401. An adjusting rod 2404 is provided in the connecting groove and one end of it extends to the outside of the connecting groove and is tangentially fitted with the inside of the groove. A connecting block 2405 that is slidably fitted with the connecting groove is fixed at the bottom of the adjusting rod 2404. Also includes: The top of the support ring 25 is fixedly connected to the bottom of the horizontal plate 1103, and the interior of the support ring is connected to the through hole; The material platform 26 has a shaft 2601 at its bottom. The shaft 2601 is rotatably engaged with the base frame 1 and extends downward through the base frame 1. The material platform 26 is configured to have the same diameter as the cup body. The bottom of the material platform 26 has a groove for placing the bottom sheet. The roller 2403 is in rolling contact with both the cup body and the material platform under the drive of the sliding block 2401. The funnel 27 is fixedly connected to the horizontal plate 1103 and passes through the through hole and is placed above the material table 26. It is used to guide the workpiece. The funnel 27 and the horizontal plate 1103 are fixedly fitted and do not rotate. It plays the role of placing the arc bottom piece and automatically falling onto the material table 26, saving the large bearing of the upper mechanism and the complicated installation of the funnel. The rotating rod 28 is rotatably connected to the support frame and the base frame 1. The rotating rod 28 is fixedly connected to the first gear 21. A handwheel 2801 is fixedly installed on the top of the rotating rod 28. The top of the fixing ring 23 is provided with a first support plate 2301 at intervals; The bottom of the support ring 25 is provided with a second support plate 2501, which is fixedly connected to the first support plate 2301. The arrangement of the first support plate 2301 and the second support plate 2501 creates a gap between the fixed ring 23 and the support ring 25. This gap ensures that the gap between the cup body and the bottom plate is not blocked, and is used for laser welding to weld the cup body and the bottom plate. The material platform 26 is located at the center of the fixed ring 23; One end of the connecting block 2405 is fixedly connected to a spring 2406, and the other end of the spring 2406 is connected to the side wall of the connecting groove. One end of the connecting block 2405 is fixedly provided with a cylindrical protrusion, and the spring 2406 is sleeved on the protrusion. Its initial size is half of the spring 2406, which is used to limit the position. The spring 2406 allows the combination of sliding block 2401, positioning block 2402 and roller 2403 to slide relative to connecting block 2405. Through the elastic deformation of spring 2406 and the sliding stroke of sliding block 2401, roller 2403 can automatically adapt to slight differences in the outer diameter of the cup (such as cup tolerance or ovality), avoiding positioning deviation or cup deformation caused by rigid clamping. Secondly, equipment vibration or slight cup displacement during welding can be absorbed by spring 2406, keeping roller 2403 always in contact with the cup, ensuring that the positioning center does not drift.

[0021] Furthermore, the clamping mechanism 3 is used to clamp the thermos cup body to the bottom plate, including: An electric push rod 31 is fixedly installed on the top plate 1101 and its output shaft passes through the top plate 1101; The sliding plate 32 is in sliding engagement with the upright 1102, and the top of the sliding plate 32 is fixedly connected to the output shaft of the electric push rod 31 through the intermediate rod; The clamping block 33 has a conical body and is used to clamp cups of different sizes. A positioning ring 3201 is fixedly installed on the bottom of the sliding plate 32; A cylindrical rod 3301 is fixedly connected to the clamping block 33, and the cylindrical rod 3301 is rotatably engaged with the positioning ring 3201.

[0022] Furthermore, the rotating mechanism 4 is used to drive the thermos cup body and the bottom plate to rotate, including a motor 41, a first pulley 42, a second pulley 43 and a synchronous belt 44. The first pulley 42 is fixedly connected to the output shaft of the motor 41, the second pulley 43 is fixedly connected to the shaft 2601 at the bottom of the material platform 26, and the tooth profile of the synchronous belt 44 meshes with the tooth grooves of the first pulley 42 and the second pulley 43. The size of the first pulley 42 is smaller than that of the second pulley 43 to achieve a transmission speed reduction effect.

[0023] The working principle of a positioning mechanism for a thermos cup bottom welding device is as follows: Workers or industrial robots sequentially place the thermos cup bottom sheet and the thermos cup body into the funnel 27. The funnel 27 guides the bottom sheet to fall onto the material platform 26 and the cup body to fall onto the bottom sheet. The operator holds and rotates the handwheel 2801, which drives the rotating rod 28 to rotate. The rotating rod 28 drives the first gear 21 to rotate, which in turn drives the second gear 22 to rotate. The rotation of the second gear 22 drives the adjusting rod 2404, which is engaged with its upper groove, to move. The adjusting rod 2404 is subjected to a radial driving force by the limiting of the sliding block 2401 and the sliding groove, which in turn drives the sliding block 2401 to move. The sliding block 2401 drives the positioning block 2402 and the roller 2403 to move towards the cup body, so that the roller 2403 contacts the cup body, thereby achieving centering of the cup body and ensuring that the axis of the workpiece is aligned with the axis of the material table 26 when the workpiece is rotated. Subsequently, the electric push rod 31 drives the slide plate 32 to move downward, and the slide plate 32 drives the pressing block 33 to move, thereby realizing the pressing step of the cup body and the bottom plate. During welding, the workpiece needs to be rotated to achieve circumferential welding between the base plate and the cup body. At this time, the motor 41 drives the first pulley 42, which drives the second pulley 43 to rotate via the synchronous belt 44. This, in turn, drives the shaft 2601 connected to the second pulley 43 to rotate, thereby driving the material table 26 to rotate. The material table 26 drives the workpiece to rotate. During this process, the workpiece drives the clamping block 33 to rotate under the cooperation of the cylindrical rod 3301 and the positioning ring 3201.

Claims

1. A positioning mechanism of a thermos cup welding bottom device, characterized in that: include: The base frame, on which a support frame is fixedly mounted; A centering mechanism, used to position the thermos cup workpiece, includes: The first gear and the second gear meshing with it, wherein the second gear has several arc-shaped slots that are evenly distributed around the circumference of the second gear; A fixed ring has several sliding grooves evenly distributed around its circumference. Several positioning components are circumferentially distributed between the fixed ring and the second gear. A single set of positioning components includes: A sliding block is slidably engaged with the sliding groove, and a positioning block is fixedly installed on it. At least two rollers are rotatably installed on the positioning block, and a connecting groove is provided on the sliding block. An adjusting rod is provided in the connecting groove and one end of it extends out of the connecting groove and is tangentially fitted with the inside of the groove. A connecting block that is slidably fitted with the connecting groove is fixed at the bottom of the adjusting rod. The clamping mechanism is used to press the body of the thermos cup against the base plate.

2. The positioning mechanism of a thermos cup welding bottom device according to claim 1, characterized in that: The support frame includes a top plate, on the bottom of which a vertical pole is fixedly installed. The vertical pole is fixedly connected to the base frame. A horizontal plate is fixedly installed on the vertical pole. A through hole is provided on the horizontal plate. The bottom of the horizontal plate is fixedly connected to the base frame through a support rod.

3. The positioning mechanism of the thermos cup welding bottom device according to claim 1, characterized in that: The centering mechanism also includes: A support ring, the top of which is fixedly connected to the bottom of the horizontal plate, the interior of which is connected to a through hole; The material platform has a shaft at its bottom, which is rotatably engaged with the base frame and extends downward through the base frame. The funnel, fixedly connected to the horizontal plate and passing through the through hole, is placed above the material platform to guide the workpiece; A rotating rod is rotatably connected to the support frame and the base frame. The rotating rod is fixedly connected to the first gear, and a handwheel is fixedly installed on the top of the rotating rod.

4. The positioning mechanism of a mug welding bottom device according to claim 3, characterized in that: The top of the fixing ring is provided with a first support plate at intervals; The bottom of the support ring is provided with a second support plate at intervals, and the second support plate is fixedly connected to the first support plate. The material platform is located at the center of the fixed ring shaft.

5. The positioning mechanism of a mug welding bottom device according to claim 1, characterized in that: One end of the connecting block is fixedly connected to a spring, and the other end of the spring is connected to the side wall of the connecting groove.

6. The positioning mechanism of a mug welding bottom device according to claim 2, characterized in that: The clamping mechanism includes: An electric actuator is fixedly mounted on the top plate, with its output shaft passing through the top plate. The sliding plate is in sliding engagement with the upright, and the top of the sliding plate is fixedly connected to the output shaft of the electric push rod via a middle rod; The clamping block, with a conical body, is used to clamp cups of different sizes.

7. The positioning mechanism of a mug welding bottom device according to claim 6, characterized in that: A positioning ring is fixedly installed on the bottom of the skateboard; A cylindrical rod is fixedly connected to the clamping block, and the cylindrical rod is rotatably engaged with the positioning ring.

8. The positioning mechanism of a mug welding bottom device according to claim 1, characterized in that: Also includes: A rotating mechanism for driving the thermos cup body and the bottom plate to rotate includes a motor, a first pulley, a second pulley and a synchronous belt. The first pulley is fixedly connected to the output shaft of the motor, the second pulley is fixedly connected to the shaft at the bottom of the material platform, and the teeth of the synchronous belt mesh with the tooth grooves of the first pulley and the second pulley.

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