Single-drive shearing and shaping device for vacuum pipe fitting heat sealing

Abstract

The invention discloses a single-drive shearing and shaping device for vacuum pipe fitting heat sealing, comprising: a housing, a driving device driving a first gear with an inner bore cam to rotate around a central axis; the axial cam part and the first gear synchronously rotate around the central axis; the shearing surfaces of the two groups of shearing parts are oppositely arranged in an inner hole of the first gear, and the two groups of shearing parts are driven by the inner hole cam to do periodic opening and closing movement in the radial direction of the first gear and driven by the axial cam part to do periodic reciprocating movement in the axial direction of the first gear. According to the invention, radial and axial multi-step actions of the shearing and shaping device can be realized only by adopting a single driving device, and automatic melting and sealing of the vacuum sealing connecting pipe can be completed by matching with heating and vacuumizing equipment, so that the production efficiency is effectively improved, the production cost is reduced, and the stability of the product quality is ensured.

Description

Technical Field

[0001] The invention relates to the field of vacuum pipe fitting processing, in particular to a single-drive shearing and shaping device for melting and sealing vacuum pipe fittings. Background Art

[0002] In the vacuum tube and vacuum glass industries, vacuuming is done through glass sealing tubes. When the vacuum degree reaches the required level, the sealing tube is heated to a molten state, and then the glass fibers are sheared off the ends of the glass sealing tubes after drawing, and the ends of the sealing tubes are shaped. However, at present, most companies use manual shearing and shaping, which not only has poor appearance quality, but also a bad working environment for workers. Due to space limitations, a clever and compact mechanical structure can achieve the sealing of automatic sealing tubes. Summary of the invention

[0003] In order to solve the problems of the prior art, the present invention proposes a single-drive shearing and shaping device for the melting and sealing of vacuum pipe fittings. Only a single drive device is used to realize the radial and axial multi-step actions of the shearing and shaping device, and in conjunction with heating and vacuum pumping equipment, the automatic melting and sealing of the vacuum sealing tube can be completed, which effectively improves production efficiency, reduces production costs, and ensures the stability of product quality.

[0004] The main technical solutions adopted in the present invention are: A single-drive shearing and shaping device for vacuum pipe sealing, comprising: A housing for accommodating the mounting drive device, the axial cam member, the first gear and the two sets of shear members; The driving device drives the first gear with an inner hole cam to rotate around the central axis; The axial cam member rotates synchronously with the first gear around the central axis; The shearing surfaces of the two groups of shearing pieces are arranged facing each other in the inner hole of the first gear, and the two groups of shearing pieces are driven by the inner hole cam to perform periodic opening and closing motion along the radial direction of the first gear, and the two groups of shearing pieces are driven by the axial cam to perform periodic reciprocating motion along the axial direction of the first gear.

[0005] Preferably, the inner hole cam of the first gear and the axial cam surface of the axial cam member are designed according to the working sequence.

[0006] Preferably, the axial cam member has two groups of axial cam curved surfaces, and the two groups of axial cam curved surfaces are centrally symmetrically arranged about a center point of the axial cam member.

[0007] Preferably, the inner hole cam of the first gear has two sets of radial cam surfaces, and the two sets of radial cam surfaces are centrally symmetrically arranged about the center point of the first gear.

[0008] Preferably, the axial cam member is fixedly mounted on the end surface of the first gear and rotates synchronously with the first gear around the central axis.

[0009] Preferably, the shell includes a accommodating chamber shell and a cover plate mounted in cooperation with the accommodating chamber shell, an annular groove is provided at the bottom of the accommodating chamber shell, steel balls are arranged in the annular groove, and the bottom surface of the axial cam member abuts against the steel balls in the annular groove.

[0010] Preferably, it also includes an axial moving part, which is placed in abutment on the axial cam part and is located in the inner hole of the first gear. The two groups of shearing parts are movably installed in the radial axial hole of the axial moving part through radial elastic guide components, and one end of the radial elastic guide component is in abutment with the inner hole cam of the first gear. Under the driving force of the inner hole cam, the two groups of shearing parts make periodic opening and closing movements along the radial direction of the first gear through the radial elastic guide components; the bottom end surface of the axial moving part has symmetrically arranged bosses, and the bosses work in cooperation with the axial cam surface of the axial cam part. Under the driving of the axial cam part, the axial moving part drives the shearing parts to make periodic reciprocating movements along the axial direction of the first gear through the axial elastic guide component fixed on the shell.

[0011] Preferably, the radial elastic guiding assembly comprises a radial guide rod and a radial spring, wherein the radial spring is sleeved on the radial guide rod, one end of the radial guide rod abuts against the inner hole cam of the first gear, and the other end passes through the axial moving part along the radial direction of the first gear and is fixedly connected to the shearing part.

[0012] Preferably, the axial elastic guide assembly includes an axial guide rod and an axial spring. The axial guide rod is arranged axially along the first gear. One end of the axial guide rod is fixed to the cover plate of the shell, and the other end is sleeved with the lug connector of the axial moving member. The lug connector moves along the axial guide rod. The axial spring is sleeved on the axial guide rod and is located between the cover plate and the lug connector.

[0013] Preferably, the driving device includes a driving mechanism and a second gear, the driving mechanism is vertically mounted on a mounting plate on the outer periphery of the shell, the output shaft of the driving mechanism is drivingly connected to the central axis of the second gear, the second gear is meshed with the first gear through an opening on the shell, and the central axes of the second gear and the first gear are parallel to each other.

[0014] Beneficial effects: The present invention provides a single-drive shearing and shaping device for vacuum pipe sealing, which has the following advantages: It has the following advantages: (1) The present invention realizes orderly step-by-step movement of the shearing piece in both radial and axial directions through a driving device. It is not only compact in structure and consumes less energy, but also works stably and reliably. It can realize automatic shearing and shaping of vacuum tubes in a limited space, thus ensuring the stability of product quality, reducing the labor intensity of workers, and improving production and processing efficiency. (2) The present invention can be used not only for sealing the tail pipes of vacuum glass and vacuum heat collecting tubes, but also for sealing the metal tail pipes of vacuum parts in other industries. It has a wide range of applications and will surely bring huge economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of Example 1; Figure 2 This is a schematic diagram of the overall explosion structure of Example 1; Figure 3 It is a partial cross-sectional schematic diagram of Example 1; Figure 4 for Figure 3 AA cross-sectional diagram of ; Figure 5 is a schematic structural diagram of the first gear in Example 1; Figure 6 is a schematic structural diagram of the axial cam member in Example 1; Figure 7 is a top view of the axial cam member in Embodiment 1; Figure 8 for Figure 7 BB cross-section diagram; Fig. 9 is a side view of the axial cam member in Embodiment 1; Fig.10 is a set of radial displacement time series curves of shear members in Example 1; Fig.11 is another set of radial displacement time series curves of shear members in Example 1; Fig.12 is a set of axial displacement relationship curves of shear members in Example 1; Fig.13 is another set of shear member axial displacement relationship curves in Example 1; In the figure: shell 1, accommodating chamber shell 1-1, cover plate 1-2, annular groove 1-3, steel ball 1-4, mounting plate 1-5, driving device 2, driving mechanism 2-1, second gear 2-2, axial cam member 3, axial cam surface 3-1, first gear 4, inner hole cam 4-1, radial cam surface 4-2, shear member 5, axial moving member 6, lug connector 6-1, radial axial hole 6-2, boss 6-3, radial elastic guide assembly 7, radial guide rod 7-1, radial spring 7-2, axial elastic guide assembly 8, axial guide rod 8-1, axial spring 8-2, connecting screw 9, screw 10. Implementation

[0016] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. The following description of the specific implementation is merely exemplary, and it should be understood that the specific implementation described herein is only used to explain the present invention, and is by no means a limitation of the present invention and its application or usage.

[0017] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may also be a centered element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a centered element at the same time. On the contrary, when an element is referred to as being "directly on" another element, there is no intermediate element. On the contrary, when an element is referred to as being "directly" connected to another element, there is no intermediate element. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0018] In the description of the present invention, it should be understood that the terms "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "top", "bottom", "inside" and "outside" etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. Example

[0019] A single-drive shearing and shaping device for vacuum pipe sealing, such as Figure 1-Figure 4As shown, it includes: a housing 1 for accommodating and installing a driving device 2, an axial cam member 3, a first gear 4 and two groups of shearing members 5; wherein the driving device 2 drives the first gear 4 having an inner hole cam 4-1 to rotate around the central axis; the axial cam member 3 is fixedly mounted on the bottom end surface of the first gear 4, and the axial cam member 3 and the first gear 4 rotate synchronously around their central axis; the shearing surfaces of the two groups of shearing members 5 are arranged facing each other in the inner hole of the first gear 4, and the two groups of shearing members 5 are driven by the inner hole cam 4-1 to make periodic opening and closing motions along the radial direction of the first gear 4, and the two groups of shearing members 5 are driven by the axial cam member 3 to make periodic reciprocating motions along the axial direction of the first gear 4.

[0020] In this embodiment 1, it also includes an axial moving member 6, which is placed in abutment on the axial cam member 3 and is located in the inner hole of the first gear 4. Two groups of shearing members 5 are movably installed in the radial axial hole 6-2 of the axial moving member 6 through radial elastic guide components 7, and one end of the radial elastic guide component 7 is in abutment with the inner hole cam 4-1 of the first gear 4. When the inner hole cam 4-1 is driven downward, the two groups of shearing members 5 are respectively driven by the radial elastic guide components 7 to perform periodic opening and closing movements along the radial direction of the first gear 4; the bottom end surface of the axial moving member 6 has a symmetrically arranged boss 6-3, and the boss 6-3 cooperates with the axial cam surface 3-1 of the axial cam member 3 (in abutment contact). Under the drive of the axial cam member 3, the axial moving member 6 drives the shearing member 5 to perform periodic reciprocating movements along the axial direction of the first gear 4 through the axial elastic guide component 8 fixed on the housing 1.

[0021] In this embodiment 1, the radial elastic guide assembly 7 includes a radial guide rod 7-1 and a radial spring 7-2, the radial spring 7-2 is sleeved on the radial guide rod 7-1, one end of the radial guide rod 7-1 is in contact with the inner hole cam 4-1 of the first gear 4, and the other end passes through the axial moving member 6 along the radial direction of the first gear 4 and is fixedly connected with the shearing member 5 (using screws 10), so that the radial elastic guide assembly 7 moves axially with the axial moving member 6. In this embodiment 1, under the action of the radial spring 7-2, the radial guide rod 7-1 is ensured to be in close contact with the radial cam surface 4-2 of the inner hole cam 4-1.

[0022] In this embodiment 1, the axial elastic guide assembly 8 includes an axial guide rod 8-1 and an axial spring 8-2. The axial guide rod 8-1 is axially arranged along the first gear 4. One end of the axial guide rod 8-1 is fixed to the cover plate 1-2 of the housing 1 by a screw 10, and the other end is sleeved with the lug connector 6-1 of the axial moving member 6. The lug connector 6-1 moves along the axial guide rod 8-1. The axial spring 8-2 is sleeved on the axial guide rod 8-1 and is located between the cover plate 1-2 and the lug connector 6-1. In this embodiment 1, under the action of the axial spring 8-2, the axial moving member 6 is ensured to be in close contact with the axial cam member 3.

[0023] In this embodiment 1, the radial elastic guide assembly 7 and the axial elastic guide assembly 8 can be but are not limited to the above structures, and existing connecting parts that can realize radial reciprocating motion or axial reciprocating motion of the shearing piece can be used in this embodiment.

[0024] In this embodiment 1, the housing 1 includes a housing 1-1 for the accommodating chamber and a cover plate 1-2 which is mounted on the housing 1-1 for the accommodating chamber by connecting screws 9. In order to reduce the friction resistance of the axial cam member 3 during the rotation process, in this embodiment 1, an annular groove 1-3 is further provided at the bottom of the housing 1-1 for the accommodating chamber, and steel balls 1-4 are arranged in the annular groove, so that the bottom surface of the axial cam member 3 abuts against the steel balls 1-4 in the annular groove 1-4. The arrangement of the steel balls can be set by those skilled in the art according to actual needs.

[0025] In this embodiment 1, the driving device 2 includes a driving mechanism 2-1 and a second gear 2-2. The driving mechanism 2-1 is mounted on a mounting plate 1-5 on the outer periphery of the housing 1. The output shaft of the driving mechanism 2-1 is drivingly connected to the central axis of the second gear 2-2. The second gear 2-2 is meshed with the first gear 4 through an opening on the housing 1. The central axes of the second gear 2-2 and the first gear 4 are parallel to each other. In the present invention, the driving mechanism 2-1 can be, but is not limited to, a pneumatic stepper motor. Any existing driving mechanism that can drive the second gear to rotate can be used for the driving device of the present invention. In this embodiment 1, the first gear and the second gear can be, but are not limited to, cylindrical gears.

[0026] like Figure 5 As shown, in this embodiment 1, the inner hole cam 4-1 of the first gear 4 has two sets of radial cam surfaces 4-2, and the two sets of radial cam surfaces 4-2 are arranged in a central symmetric manner about the center point of the first gear 4. Figure 5 As shown, the interior of the first gear 4 is a closed hole in which two groups of cam surfaces 4-2 with the same period are connected end to end.

[0027] like Figure 6-9 As shown, in this embodiment 1, the axial cam member 3 has two sets of axial cam surfaces 3-1, and the two sets of axial cam surfaces 3-1 are centrally symmetrically arranged about the center point of the axial cam member 3. The design size of the axial cam member 3 needs to consider the size of the pressure angle, and self-locking cannot be generated.

[0028] In this embodiment 1, the inner hole cam 4-1 of the first gear 4 and the axial cam surface 3-1 of the axial cam member 3 are designed according to the working sequence. As a specific embodiment, the cam surface 4-2 of the inner hole cam 4-1 is designed according to the following Fig.10 and Fig.11 The radial displacement timing curves of the two sets of shearing members 5 are designed. The axial cam surface 3-1 of the axial cam member 3 is designed according to Fig.12 and Fig.13 The axial displacement timing curve design of the two groups of shear members 5 is shown.

[0029] Based on the above timing curve, the timing of the actions of the two shearing members 5 caused by the inner hole cam 4-1 of the first gear and the axial cam surface 3-1 of the axial cam member 3 is as follows: The first gear rotates → When the rotation angle is 0-30°, the two groups of shearing pieces 5 move radially toward the center of the circle for 7mm at the same time, and the axial position of the two groups of shearing pieces 5 remains unchanged → When the rotation angle is 30°-60°, the radial position of the two groups of shearing pieces 5 remains unchanged, and the two groups of shearing pieces 5 move forward axially by 7mm, so that the shearing pieces 5 are inserted into the tail pipe shearing position in the inner hole of the heating sleeve → When the rotation angle is 60°-75°, the two groups of shearing pieces 5 continue to move radially toward the center of the circle for 3mm, so that the two groups of shearing pieces 5 clamp tightly and shear the molten tail pipe end, and the two groups The axial position of the shearing piece 5 remains unchanged → when the rotation angle is 75°-90°, the radial position of the two groups of shearing pieces 5 remains unchanged, and at the same time, the two groups of shearing pieces 5 continue to move forward 3mm in the axial direction to shape the cut ends → when the rotation angle is 90°-180°, the two groups of shearing pieces 5 are reset radially and axially under the action of the radial elastic guide assembly and the axial elastic guide assembly 7 respectively → when the rotation angle is 180°-270°, the last working cycle is repeated → when the rotation angle is 270°-360°, the two groups of shearing pieces 5 are reset radially and axially respectively, and the next round of working cycle is carried out.

[0030] In the present embodiment 1, the working cycle angle of the first gear is 0-180° each time, but in the present invention, the working cycle of the first gear is not limited to the above working cycle. Exceeding the working cycle range does not affect the operation of this structure, and the mechanical interlocking ensures the multi-step orderly action and safety of the two shearing members in the radial and axial directions with a single drive input.

[0031] The specific working principle of this embodiment 1 is as follows: Working process: The driving mechanism 2-1 drives the second gear 2-2 to rotate clockwise, thereby driving the first gear 4 and the axial cam member 3 to rotate. The inner hole cam 4-1 of the first gear 4 drives the radial guide rod 7-1 (two groups) and the shearing member 5 (two groups) to move radially toward the center of the circle. At the same time, the axial cam member 3 drives the axial moving member 6 to move axially. The axial moving member 6 is restricted by the axial guide rod 8-1 fixed on the cover plate 1-2 and can only move axially but not rotate, thereby driving the radial guide rod 7-1 (two groups) and the shearing member 5 (two groups) to move axially at the same time, so that the shearing member 5 (two groups) can perform periodic radial and axial movements according to the process requirements, and complete the closing, clamping, shearing and shaping process.

[0032] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0033] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A single-drive shearing and shaping device for vacuum pipe sealing, characterized in that: include: A housing for accommodating the mounting drive device, the axial cam member, the first gear and the two sets of shear members; The driving device drives the first gear with an inner hole cam to rotate around the central axis; The axial cam member rotates synchronously with the first gear around the central axis; The shearing surfaces of the two groups of shearing pieces are arranged facing each other in the inner hole of the first gear, and the two groups of shearing pieces are driven by the inner hole cam to perform periodic opening and closing motion along the radial direction of the first gear, and the two groups of shearing pieces are driven by the axial cam to perform periodic reciprocating motion along the axial direction of the first gear.

2. The single-drive shearing and shaping device for vacuum pipe sealing according to claim 1, characterized in that: The inner hole cam of the first gear and the axial cam surface of the axial cam member are designed according to the working sequence.

3. The single-drive shearing and shaping device for vacuum pipe sealing according to claim 1, characterized in that: The axial cam member has two groups of axial cam curved surfaces, and the two groups of axial cam curved surfaces are centrally symmetrically arranged about the center point of the axial cam member.

4. The single-drive shearing and shaping device for vacuum pipe sealing according to claim 1 or 2, characterized in that: The inner hole cam of the first gear has two sets of radial cam curved surfaces, and the two sets of radial cam curved surfaces are centrally symmetrically arranged about the center point of the first gear.

5. The single-drive shearing and shaping device for vacuum pipe sealing according to claim 1, characterized in that: The axial cam member is fixedly mounted on the end surface of the first gear and rotates synchronously with the first gear around the central axis.

6. The single-drive shearing and shaping device for vacuum pipe sealing according to claim 1, characterized in that: The shell comprises a housing chamber shell and a cover plate mounted in cooperation with the housing chamber shell. An annular groove is provided at the bottom of the housing chamber shell. Steel balls are arranged in the annular groove. The bottom surface of the axial cam part abuts against the steel balls in the annular groove.

7. The single-drive shearing and shaping device for vacuum pipe sealing according to claim 1, characterized in that: It also includes an axial moving part, which is placed in abutment on the axial cam part and is located in the inner hole of the first gear. The two groups of shearing parts are movably installed in the radial axial hole of the axial moving part through radial elastic guide components, and one end of the radial elastic guide component is in abutment with the inner hole cam of the first gear. Under the driving of the inner hole cam, the two groups of shearing parts respectively make periodic opening and closing movements along the radial direction of the first gear through the radial elastic guide components; the bottom end surface of the axial moving part has symmetrically arranged bosses, and the bosses work in cooperation with the axial cam surface of the axial cam part. Under the driving of the axial cam part, the axial moving part drives the shearing parts to make periodic reciprocating movements along the axial direction of the first gear through the axial elastic guide component fixed on the shell.

8. The single-drive shearing and shaping device for vacuum pipe sealing according to claim 7, characterized in that: The radial elastic guide assembly includes a radial guide rod and a radial spring. The radial spring is sleeved on the radial guide rod. One end of the radial guide rod abuts against the inner hole cam of the first gear, and the other end passes through the axial moving part along the radial direction of the first gear and is fixedly connected to the shearing part.

9. The single-drive shearing and shaping device for vacuum pipe sealing according to claim 7, characterized in that: The axial elastic guide assembly includes an axial guide rod and an axial spring. The axial guide rod is arranged axially along the first gear. One end of the axial guide rod is fixed to the cover plate of the shell, and the other end is sleeved with the lug connector of the axial moving part. The lug connector moves along the axial guide rod. The axial spring is sleeved on the axial guide rod and is located between the cover plate and the lug connector.

10. The single-drive shearing and shaping device for vacuum pipe sealing according to claim 1, characterized in that: The driving device includes a driving mechanism and a second gear. The driving mechanism is vertically mounted on a mounting plate on the outer periphery of the shell. The output shaft of the driving mechanism is drivingly connected to the central axis of the second gear. The second gear is meshed with the first gear through an opening on the shell. The central axes of the second gear and the first gear are parallel to each other.

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