Screw mouth device for forming threads of tank body

Abstract

The utility model discloses a screw mouth device for tank thread forming, which comprises a forming pressure head, a first tooth knife and a second tooth knife, a first clamping seat is rotatably arranged in the middle of the forming pressure head, a second clamping seat is rotatably arranged on one side of the first clamping seat, and the first tooth knife and the second tooth knife are respectively inserted into the first clamping seat and the second clamping seat; an opening sleeve is rotationally arranged on a lower opening of the forming pressure head, the opening sleeve of the forming pressure head is arranged on a tank body to be subjected to thread forming in a sleeving mode, an elastic pressing mechanism is arranged between the first clamping base and the second clamping base in the forming pressure head, and the first tooth knife and the second tooth knife clamp the peripheral wall of the opening of the tank body under the elastic effect of the elastic pressing mechanism. The can body is driven to rotate through the rotary carrier, so that the can body drives the first tooth knife to rotate, and the opening of the can body forms a threaded part under extrusion of the first tooth knife and the second tooth knife. According to the utility model, automatic thread forming of the tank body is realized, the working efficiency is greatly improved, and the production cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of thread processing, particularly to a screw mouth device for thread forming of a tank body. BACKGROUND

[0002] In recent years, with the increasing demand for fast-moving consumer goods, the demand for aluminum cans is also increasing. Some aluminum cans have bottle openings that are gathered and need to be connected with lids through threads. After the tank body is formed, the opening of the tank body needs to be processed by thread rolling to form threads on the opening of the tank body.

[0003] Traditional thread rolling processing of the opening of the tank body usually requires workers to manually use special thread processing tools to process the threads of the opening of the tank body. This method is not only time-consuming and labor-intensive, but also has low work efficiency, greatly increasing production costs. In order to improve production efficiency, the current thread rolling of the opening of the tank body adopts a double die design. Two rolling dies are placed on the inside and outside of the opening of the tank body. When the two rolling dies rotate, the inside and outside walls of the opening of the tank body are extruded and formed. However, the distance between the two existing rolling dies is fixed, and the positions of the two rolling dies cannot be adjusted. This design can only be applied to tank bodies with a certain thickness and caliber size for thread rolling. It cannot be adjusted according to the caliber of the opening of the tank body and the thickness of the side wall of the tank body, and the scope of application is too limited. SUMMARY

[0004] The technical problem to be solved by the utility model embodiment is to provide a screw mouth device for thread forming of a tank body, which can adaptively adjust the distance between the first tooth cutter and the second tooth cutter, has a wide range of applications, high work efficiency, and effectively reduces production costs.

[0005] To achieve the above-mentioned purpose, the utility model discloses a screw mouth device for thread forming of a tank body, which comprises a forming pressure head, a first tooth cutter and a second tooth cutter. The forming pressure head is arranged above the tank body in a lifting manner. A first clamping seat is rotatably arranged on the middle part of the forming pressure head. A second clamping seat is rotatably arranged on one side of the first clamping seat. The first tooth cutter and the second tooth cutter are respectively inserted into the first clamping seat and the second clamping seat.

[0006] The tank body is clamped on a rotating carrier. The rotating carrier drives the tank body to rotate. An opening sleeve is rotatably arranged on the lower opening of the forming pressure head. When the forming pressure head descends, the opening sleeve is arranged on the tank body to be thread formed, and the opening sleeve rotates with the tank body. An elastic pressing mechanism is arranged between the first clamping seat and the second clamping seat in the interior of the forming pressure head, so that the first tooth cutter extends into the opening of the tank body, and the first tooth cutter and the second tooth cutter clamp the peripheral wall of the opening of the tank body under the elastic action of the elastic pressing mechanism.

[0007] The can body is clamped on a rotating carrier, the rotating carrier drives the can body to rotate, a transmission mechanism is arranged between the first tooth cutter and the second tooth cutter to drive the first tooth cutter to rotate, and the transmission mechanism drives the second tooth cutter to rotate, so that the opening of the can body is formed into a threaded portion under the extrusion of the first tooth cutter and the second tooth cutter.

[0008] Further, the first clamping seat and the second clamping seat are provided with a sliding mechanism on the side of the forming pressure head.

[0009] Further, the sliding mechanism comprises a pulley, the pulley is rotationally arranged on the first clamping seat / second clamping seat, and the inner wall of the forming pressure head is provided with a sliding rail, and the surface of the sliding rail is a slope, so that the pulley and the slope of the sliding rail are in sliding cooperation.

[0010] Further, the elastic pressing mechanism comprises a pressing fixed seat, a first spring and a second spring, the pressing fixed seat is fixedly installed in the forming pressure head, and the first spring and the second spring are arranged between the pressing fixed seat and the first clamping seat / second clamping seat, so that the first tooth cutter and the second tooth cutter clamp the opening of the can body under the elastic action of the first spring and the second spring.

[0011] Further, the end side wall of the pressing fixed seat is provided with a sleeve rod, the side wall of the first clamping seat and the second clamping seat has a protruding block, and the protruding block is provided with a sleeve hole, so that one end of the first spring and the second spring is sleeved on the sleeve rod, and the other end is arranged in the sleeve hole.

[0012] Further, the transmission mechanism comprises a first linkage gear and a second linkage gear, the first linkage gear and the second linkage gear are rotationally arranged on the forming pressure head and are connected with each other, the lower part of the first tooth cutter has a main gear meshing with the first linkage gear, and the lower part of the second tooth cutter has a secondary gear meshing with the second linkage gear.

[0013] Further, the forming pressure head comprises a cylinder, a disc body and a shell, the disc body is slidingly arranged in the cylinder, the upper part of the cylinder is fixedly arranged on the shell, and the first clamping seat and the second clamping seat are rotationally arranged on the disc body.

[0014] Further, the shell is threadedly connected with a rotating shaft, the rotating shaft is rotationally connected with the disc body, and the rotating shaft drives the disc body to slide up and down along the inner wall of the cylinder through a main shaft box.

[0015] Further, the upper outer wall of the barrel is provided with an open slot, the lateral wall of the shell is fixedly provided with a slide rail, the slide rail is inserted into the open slot, and the inner side of the slide rail is a slope, so that the pulley is in sliding fit with the slope of the slide rail.

[0016] Further, the first clamping seat and the second clamping seat are rotatably provided with an insertion shaft, and the bottom of the first toothed cutter and the second toothed cutter is provided with an insertion hole in fit with the insertion shaft.

[0017] Compared with the prior art, the utility model has the beneficial effects that:

[0018] (1) the first clamping seat and the second clamping seat are provided with an elastic pressing mechanism, so that the first toothed cutter and the second toothed cutter are tightly closed by the elastic force of the elastic pressing mechanism, and the first toothed cutter and the second toothed cutter can tightly adhere to the opening peripheral wall of the tank body of different thicknesses and diameters, so that the utility model can be applied to tank body processing of various specifications. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is an overall structure sectional view of the forming pressing head;

[0020] Figure 2 It is an overall structure schematic view of the elastic pressing mechanism;

[0021] Figure 3 It is an overall structure schematic view of the transmission mechanism;

[0022] Figure 4 It is an overall structure schematic view of the first clamping seat and the second clamping seat;

[0023] Figure 5 It is an overall structure sectional view of the first clamping seat and the second clamping seat. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the utility model more clear, the utility model will be further described in detail below with reference to the drawings.

[0025] Reference Figure 1 , Figure 2As shown, a screw mouth device for thread forming of a tank body, comprising a forming punch 1, a first tooth cutter 2, a second tooth cutter 3, the forming punch 1 is arranged above the tank body in a lifting manner, a first clamping seat 4 is rotatably arranged on the middle part of the forming punch 1, a second clamping seat 5 is rotatably arranged on one side of the first clamping seat 4, a connecting seat 6 is rotatably arranged on the first clamping seat 4 and the second clamping seat 5 respectively, a plug shaft 9 is rotatably arranged on the first clamping seat 4 and the second clamping seat 5 through a bearing, and the bottom of the first tooth cutter 2 and the second tooth cutter 3 has a plug hole matched with the plug shaft 9, so that the first tooth cutter 2 and the second tooth cutter 3 are respectively inserted on the first clamping seat 4 and the second clamping seat 5, and a counterbore is formed at the center of the first tooth cutter 2 and the second tooth cutter 3, and a screw is fixedly connected with the plug shaft 9 through the counterbore, so as to ensure that the first tooth cutter 2 and the second tooth cutter 3 are connected firmly, and different sizes of the first tooth cutter 2 and the second tooth cutter 3 can be replaced according to different calibers of the tank body, so that the applicability is wider.

[0026] Referring to Figure 1 , Figure 5 As shown, specifically, the forming punch 1 comprises a cylinder body 11, a disc body 12 and a shell, the disc body 12 is slidably arranged in the cylinder body 11, the upper part of the cylinder body 11 is fixedly arranged on the shell, and the disc body 12 is fixedly arranged with a pair of fixed shafts 121, the first clamping seat 4 and the second clamping seat 5 are rotatably arranged on the fixed shafts 121 of the disc body 12 through bearings, so that the first clamping seat 4 and the second clamping seat 5 can swing around the fixed shafts 121 respectively.

[0027] In the embodiment, the forming punch 1 is clamped on a numerical control equipment, wherein a rotating shaft is threadedly connected with the center of the shell, the lower end of the rotating shaft is rotatably connected with the disc body 12, the rotating shaft is arranged in a spindle box of the numerical control equipment, and the upper end of the rotating shaft is threadedly connected with one gear in the spindle box, in addition, the spindle box is arranged on a column guide rail of the numerical control equipment in a lifting manner, a servo motor is arranged on the column guide rail for driving the spindle box to lift, the connection relationship between the spindle box, the column guide rail and the numerical control equipment is the existing technology, which will not be repeated here, so that the servo motor drives the forming punch 1 to descend, and the spindle box drives the rotating shaft to rotate to drive the disc body 12 to slide along the inner wall of the cylinder body 11.

[0028] Further, in the embodiment, a workbench is arranged below the forming punch 1, a rotating carrier is rotatably arranged on the workbench, the rotating carrier is used for clamping the tank body to be thread formed, a rotating driving device is fixedly installed on the workbench, and the rotating driving device preferably adopts a motor, so that the rotating driving device drives the rotating carrier to drive the tank body to rotate, and the rotating carrier is the existing structure, which will not be repeated here.

[0029] Referring to Figure 1As shown, the lower opening of the forming pressure head 1 is rotatably provided with an opening sleeve 10 through a bearing, and the inner hole of the opening sleeve 10 matches the shape of the can body, so that when the forming pressure head 1 is lowered, the opening sleeve 10 is sleeved on the can body to be thread formed, so that the opening of the can body can be better pressed, and the opening sleeve 10 rotates with the can body to avoid shaking of the can body during rotation, affecting the forming of the opening. At the same time, the first tooth cutter and the second tooth cutter can abut against the opening of the can body.

[0030] In combination Figure 2 , 4 As shown, more preferably, the inside of the forming pressure head 1 is provided with an elastic pressing mechanism 7 between the first clamping seat 4 and the second clamping seat 5. The second tooth cutter 3 is clamped with the first tooth cutter 2 under the elastic action of the elastic pressing mechanism 7. The elastic pressing mechanism 7 includes a pressing fixed seat 71, a first spring 72 and a second spring 73. The pressing fixed seat 71 is fixedly installed on the disc body 12 of the forming pressure head 1. The end side wall of the pressing fixed seat 71 is provided with a sleeve rod 74. The side wall of the first clamping seat 4 and the second clamping seat 5 has a protruding block 45. The protruding block 45 is provided with a sleeve hole 451, so that one end of the first spring 72 and the second spring 73 is sleeved on the sleeve rod 74, and the other end is placed in the sleeve hole 451. The first spring 72 and the second spring 73 are arranged between the pressing fixed seat 71 and the first clamping seat 4 and the second clamping seat 5 respectively, so that the first tooth cutter 2 and the second tooth cutter 3 are elastically attracted to each other by the first spring 72 and the second spring 73.

[0031] When the opening sleeve 10 presses and rotates the can body on the carrier, the spindle box linkage disc body continues to move downward, so that the opening peripheral wall of the can body is between the first tooth cutter 2 and the second tooth cutter 3. Therefore, the first tooth cutter 2 and the second tooth cutter 3 overcome the elastic tendency of the first spring 72 and the second spring 73 under the action of the opening peripheral wall of the can body, so that the first tooth cutter 2 and the second tooth cutter 3 are opened. The first tooth cutter 2 abuts against the inner wall of the opening of the can body, and the second tooth cutter 3 abuts against the outer wall of the opening of the can body. The first tooth cutter 2 and the second tooth cutter 3 are elastically clamped on the opening of the can body under the elastic action of the first spring 72 and the second spring 73, so as to ensure that the first tooth cutter 2 and the second tooth cutter 3 can tightly abut against the opening peripheral wall of the can body when facing can bodies of different thicknesses and diameters, thereby realizing self-adaptive adjustment of the first tooth cutter and the second tooth cutter. Therefore, it can be applied to can body processing of various specifications.

[0032] Referring to Figure 1 , Figure 3As shown, further, the first tooth cutter 2 and the second tooth cutter 3 are provided with a linkage transmission mechanism 8, the linkage transmission mechanism 8 comprises a first linkage gear 81 and a second linkage gear 82, the first linkage gear 81 and the second linkage gear 82 are respectively rotationally arranged on the fixed shaft 121 of the first clamping seat 4 and the second clamping seat 5, and the first linkage gear 81 and the second linkage gear 82 are meshingly connected with each other, the lower part of the first tooth cutter 2 is provided with a main gear meshing with the first linkage gear 81, and the lower part of the second tooth cutter 3 is provided with a secondary gear meshing with the second linkage gear 82, when the first tooth cutter 2 rotates under the driving of the tank body, the first linkage gear 81 rotates under the driving of the first tooth cutter 2, so that the second tooth cutter 3 rotates under the linkage of the first linkage gear 81 and the second linkage gear 82, thereby the first tooth cutter 2 and the second tooth cutter 3 cooperatively extrude the opening peripheral wall of the tank body.

[0033] Referring to Figures 1-3 As shown, more preferably, the first clamping seat 4 and the second clamping seat 5 are provided with a sliding mechanism 6 on the side facing the forming press head 1, the sliding mechanism 6 comprises a pulley 61 rotationally arranged on the first clamping seat 4 and the second clamping seat 5, and the inner wall of the forming press head 1 is provided with a sliding rail, the surface of the sliding rail is a slope, so that the pulley 61 is slidingly matched with the slope of the sliding rail.

[0034] The upper outer wall of the cylinder body 11 is provided with an opening groove 111, the sliding rail is fixedly arranged on the side wall of the shell and inserted into the opening groove 111, so that when the rotating shaft links the first tooth cutter 2 and the second tooth cutter 3 to move downward, the first clamping seat 4 and the second clamping seat 5 gradually close under the action of the slope of the sliding rail, so as to ensure that the clamping force of the first tooth cutter 2 and the second tooth cutter 3 is small when tapping the thread, which affects the thread forming quality of the opening.

[0035] Referring to Figures 1-5 As shown, in specific work, the tank body is clamped on the rotating carrier, the servo motor drives the forming press head 1 to descend to make the opening sleeve 10 cover the tank body on the rotating carrier, and the first tooth cutter 2 extends into the opening of the tank body, the second tooth cutter 3 clamps the opening of the tank body under the elastic action of the elastic pressing mechanism 8, then the rotary drive device drives the rotating carrier to rotate clockwise, thereby driving the tank body to rotate, and the first tooth cutter 2 rotates around the first clamping seat 4 under the driving of the tank body, and the first tooth cutter 2 rotates the second tooth cutter 3 through the linkage of the first linkage gear 81 and the second linkage gear 82, in the process of the first tooth cutter 2 and the second tooth cutter 3 rotating, the main shaft box links the cylinder body 11 to drive the first tooth cutter 2 and the second tooth cutter 3 to move downward, and the first clamping seat 4 and the second clamping seat 5 drive the first tooth cutter 2 and the second tooth cutter 3 to gradually close under the action of the slope of the sliding rail, thereby increasing the clamping force between the first tooth cutter 2 and the second tooth cutter 3, so that the opening peripheral wall of the tank body forms a threaded part under the extrusion of the first tooth cutter 2 and the second tooth cutter 3, thereby realizing the automatic thread forming of the tank body, and greatly improving the work efficiency.

[0036] When the thread part of the opening is formed, the rotation driving device drives the rotation carrier to rotate counterclockwise, while the first tooth cutter 2 and the second tooth cutter 3 continue to rotate by the driving of the can body, and the spindle box linkage disc body 11 drives the first tooth cutter 2 and the second tooth cutter 3 to gradually move upwards until the first tooth cutter 2 and the second tooth cutter 3 leave the opening of the can body, and then the servo motor drives the forming pressure head 1 to rise to continue thread forming on the next can body.

[0037] Of course, the above-mentioned embodiments are only for illustrating the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and to implement it, and it cannot limit the protection scope of the present application. Any modification made according to the spirit and essence of the main technical scheme of the present application should be covered within the protection scope of the present application.

Claims

1. A spout for thread forming of a can body, characterized by, The utility model provides a thread forming device for can body, including forming pressure head (1), first tooth sword (2), second tooth sword (3), forming pressure head (1) is set up in the upper of jar body liftably, the middle part of forming pressure head (1) is rotationally arranged with first clamping seat (4), one side of first clamping seat (4) is rotationally arranged with second clamping seat (5), first tooth sword (2), second tooth sword (3) are respectively inserted in first clamping seat (4), second clamping seat (5) on, The jar body is clamped on a rotating carrier, the rotating carrier drives the jar body to rotate, the lower opening of the forming pressure head (1) is rotationally arranged with an opening sleeve (10), the opening sleeve (10) is sleeved on the jar body to be thread formed when the forming pressure head (1) is lowered, and the opening sleeve rotates with the jar body, the interior of the forming pressure head (1) is provided with an elastic pressing mechanism (7) between the first clamping seat (4) and the second clamping seat (5), so that the first tooth sword (2) extends into the opening of the jar body, and the first tooth sword (2) and the second tooth sword (3) clamp the opening peripheral wall of the jar body under the elastic action of the elastic pressing mechanism (7). A transmission mechanism (8) is arranged between the first tooth sword (2) and the second tooth sword (3) to drive the first tooth sword (2) to rotate with the jar body, and the transmission mechanism (8) drives the second tooth sword (3) to rotate, so that the opening of the jar body is extruded by the first tooth sword (2) and the second tooth sword (3) to form a thread part.

2. A spout for thread forming of a can body according to claim 1, wherein The first clamping seat (4) and the second clamping seat (5) are provided with a sliding mechanism (6) on the side facing the forming pressure head (1), and the sliding mechanism (6) is in sliding cooperation with the inner wall of the forming pressure head (1).

3. A spuit for thread forming on a can body as defined in claim 2, wherein The sliding mechanism (6) includes a pulley (61) rotationally arranged on the first clamping seat (4) or the second clamping seat (5), and the inner wall of the forming pressure head (1) is provided with a sliding rail, and the surface of the sliding rail is inclined, so that the pulley (61) is in sliding cooperation with the inclined surface of the sliding rail.

4. A spout for thread forming of a can body as defined in claim 1, wherein The elastic pressing mechanism (7) includes a pressing fixed seat (71), a first spring (72), and a second spring (73), the pressing fixed seat (71) is fixedly installed in the forming pressure head (1), the first spring (72) and the second spring (73) are arranged between the pressing fixed seat (71) and the first clamping seat (4) and the second clamping seat (5), so that the first tooth sword (2) and the second tooth sword (3) clamp the opening of the jar body under the elastic action of the first spring (72) and the second spring (73).

5. A spuit for thread forming on a can body as defined in claim 4 wherein, The end side wall of the pressing fixed seat (71) is provided with a sleeve rod (74), the side wall of the first clamping seat (4) and the second clamping seat (5) has a protruding block (45), the protruding block (45) is provided with a sleeve hole (451), so that one end of the first spring (72) and the second spring (73) is sleeved on the sleeve rod (74), and the other end is arranged in the sleeve hole (451).

6. A spuit for thread forming on a can body as defined in claim 1 wherein, The transmission mechanism (8) comprises a first linkage gear (81) and a second linkage gear (82), which are rotatably arranged on the forming press head (1) and are connected with each other in meshing mode, the lower part of the first toothed tool (2) is provided with a main gear which is in meshing mode with the first linkage gear (81), and the lower part of the second toothed tool (3) is provided with a secondary gear which is in meshing mode with the second linkage gear (82).

7. A spuit for thread forming on a can body as defined in claim 3 wherein, The forming press head (1) comprises a cylinder (11), a disc (12) and a shell, the disc (12) is slidably arranged in the cylinder (11), the upper part of the cylinder (11) is fixedly arranged on the shell, and the first clamping seat (4) and the second clamping seat (5) are rotatably arranged on the disc (12).

8. A spuit for thread forming on a can body as defined in claim 7, wherein A rotating shaft is threadedly connected to the center of the shell, and the rotating shaft is rotatably connected with the disc, and the rotating shaft drives the disc to slide up and down along the inner wall of the cylinder (11) through the main shaft box linkage.

9. A spuit for thread forming on a can body as defined in claim 8 wherein, An open slot (111) is formed in the upper outer wall of the cylinder (11), a slide rail is fixedly arranged on the side wall of the shell and is inserted into the open slot (111), and the inner side surface of the slide rail is an inclined surface, so that the pulley (61) is in sliding fit with the inclined surface of the slide rail.

10. A spout for thread forming of a can body as defined in claim 1, wherein The first clamping seat (4) and the second clamping seat (5) are rotatably provided with an insertion shaft (9), and the bottom of the first toothed tool (2) and the second toothed tool (3) is provided with an insertion hole which is in plug-in fit with the insertion shaft (9).

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