Diaphragm traction structure for gas meter diaphragm vulcanization

Abstract

The utility model discloses a diaphragm traction structure for vulcanizing a diaphragm of a gas meter, which comprises a leading-in mechanism, a traction mechanism and a traction mechanism, the leading-out mechanism is located below the leading-in mechanism, and the film belt is unfolded from the film roll and sequentially passes through the leading-in mechanism and the leading-out mechanism; the alternate extruding and fixing mechanism is arranged on one side of the leading-in mechanism and the leading-out mechanism and is used for alternately extruding and fixing the film belt wound on the leading-in mechanism and the leading-out mechanism with the leading-in mechanism and the leading-out mechanism; the drawing mechanism is arranged between the leading-in mechanism and the leading-out mechanism; and after the film belt and the leading-out mechanism are extruded and fixed, the drawing mechanism lifts the film belt between the leading-in mechanism and the leading-out mechanism, so that the film roll is unwound. The film unwinding device is simple in structure, and the conditions that waves are caused by uneven stress when the film is unwound and stress is too concentrated when the film belt is drawn at a cutting station can be effectively reduced.

Description

Technical Field

[0001] The utility model relates to the field of gas meter diaphragm production, in particular to a diaphragm traction structure for gas meter diaphragm vulcanization. Background Art

[0002] The diaphragm gas meter is a metering device used to measure gas usage. The working principle of the diaphragm gas meter is mainly based on the volumetric method, that is, cumulative metering is performed by measuring the gas volume flow rate. Its working process is as follows: When the gas enters the gas meter, a pressure difference will be generated at both ends of the gas meter inlet and outlet. This pressure difference pushes the diaphragm to reciprocate in the metering chamber, and at the same time drives the gas distribution mechanism to coordinate gas distribution. Each reciprocating movement of the diaphragm will discharge a certain amount of gas. When the roller rotates through a counting unit, a roller rotation metering display is realized, thereby realizing the cumulative metering of gas. In addition, the driving force of the diaphragm movement depends on the gas pressure difference at the inlet and outlet of the gas meter. When the diaphragm moves to the extreme position on one side, another diaphragm is required to generate the same driving force to drive the first diaphragm back to achieve continuous automatic metering.

[0003] Therefore, the diaphragm in the diaphragm gas meter is a very important component, and its production process includes diaphragm cutting, vulcanization and other processes. Before cutting, the rolled diaphragm with a certain viscosity needs to be separated and cut at a fixed length. At present, the diaphragm roll is directly pulled during the cutting process, which easily causes excessive force to be applied at the pulling point, resulting in deformation of the diaphragm, and at the same time, the film strip unwound from the film roll forms waves, which makes the quality of the diaphragm produced by subsequent vulcanization and other processes low. Utility Model Content

[0004] In view of the above-mentioned defects of the prior art, the purpose of the utility model is to provide a diaphragm traction structure for gas meter diaphragm vulcanization, which has a simple structure and can effectively reduce the waves caused by uneven force when the diaphragm is unwound and the excessive stress concentration when the film strip is pulled out at the cutting station.

[0005] The purpose of the utility model is achieved through such technical solution:

[0006] A diaphragm traction structure for vulcanization of a gas meter diaphragm, comprising:

[0007] An introduction mechanism is located below the film roll;

[0008] The export mechanism is located below the introduction mechanism, and the film strip is unwound from the film roll and passes through the introduction mechanism and the export mechanism in sequence;

[0009] An alternating extrusion fixing mechanism is arranged on one side of the introduction mechanism and the output mechanism, and alternately extrudes and fixes the film tape rolled on the introduction mechanism and the output mechanism to the introduction mechanism and the output mechanism;

[0010] The pulling mechanism is arranged between the introducing mechanism and the exporting mechanism; after the film strip is squeezed and fixed with the exporting mechanism, the pulling mechanism pulls the film strip between the introducing mechanism and the exporting mechanism to unwind the film roll.

[0011] Furthermore, the introduction mechanism comprises:

[0012] Introduce a fixed roller, located below the film roll;

[0013] The introduction guide roller is located below the introduction fixed roller and on the same side as the film roll; the alternating extrusion and fixing mechanism is located on the back side of the guide roller to extrude and fix the film strip on the introduction fixed roller.

[0014] Furthermore, the export mechanism includes:

[0015] The lead-out guide roller is located below the lead-in fixed roller;

[0016] The lead-out fixed roller is located below the lead-out guide roller and opposite to the film roll direction; the alternating extrusion and fixing mechanism is located on one side of the lead-out fixed roller to extrude and fix the film strip on the lead-out fixed roller.

[0017] Furthermore, the alternating extrusion and fixing mechanism comprises:

[0018] A swing rod, the middle of which is rotatably connected, and the two ends are respectively located on the outside of the introduction fixed roller and the outlet fixed roller; the hinged part of the swing rod is located on the mid-vertical line of the connection between the introduction fixed roller and the outlet fixed roller;

[0019] Two airbag extrusion parts are respectively arranged at two ends of the swing rod, and the extrusion parts are respectively facing the outer sides of the introduction fixed roller and the outlet fixed roller;

[0020] An air pump with a gas distribution valve, the gas distribution valve being connected to two air bag extrusion members;

[0021] A rocker arm, one end of which is connected to one end of the rocker rod;

[0022] The first cylinder has an end that is rollingly engaged with the other end of the swing arm; the first cylinder telescopes to drive the swing arm and the swing rod to rotate, so that the two airbag extrusion parts alternately squeeze the introduction and extraction of the fixed roller.

[0023] Furthermore, the airbag extrusion component comprises:

[0024] A connecting rod, one end of which is connected to the swing rod;

[0025] The cover is in a semi-tubular shape, and the back is connected to the other end of the connecting rod; the inside of the cover is hollow, and the inside of the cover is connected to the gas distribution valve of the air pump;

[0026] A plurality of elastic air bags are arranged on the inner side of the cover shell and communicated with the inside of the cover shell. The elastic air bags are directly opposite to the film strip introduced into or led out of the fixed roller, and the width of the elastic air bags is greater than the width of the film strip.

[0027] Furthermore, the elastic airbag is in a strip shape, and the axis of the elastic airbag is parallel to the axis of the corresponding outlet fixed roller or the inlet fixed roller.

[0028] Furthermore, the telescopic end of the first cylinder is provided with a rolling card embedding mechanism; the rolling card embedding mechanism comprises:

[0029] A rectangular frame connected to the telescopic end of the first cylinder;

[0030] Two rotating rollers are respectively and parallelly arranged on the rectangular frame; the rocker arm passes through the gap between the two rotating rollers and is rotatably engaged with the rotating rollers.

[0031] Furthermore, a sleeve with an internal thread is provided at the end of the swing rod; an external thread matching the sleeve is provided at one end of the rocker arm, and the swing rod is threadedly connected to the rocker arm.

[0032] Furthermore, the pulling mechanism comprises:

[0033] Pry bar, hinged at the top;

[0034] A pulling roller is connected to the lower end of the tilting rod; the pulling roller is directly opposite to the film strip between the introduction guide roller and the output guide roller;

[0035] The second cylinder is arranged on the upper part of the pry bar, and drives the pry bar to rotate when the second cylinder is extended or retracted, so that the pulling roller swings.

[0036] Furthermore, the pry bar and the pulling roller form an L shape, and the second cylinder is located on the outside of one end surface of the film strip.

[0037] Due to the adoption of the above technical solution, the utility model has the following advantages:

[0038] 1. Through the introduction mechanism and the export mechanism, a certain length is retained between the pulled-out film tape and the cutting processing station, which is convenient for the pulling mechanism to reel in and pull out.

[0039] 2. The setting of the introduction mechanism and the export mechanism provides a fixed basis for the film tape of the alternating extrusion fixing mechanism, so that when the pulling mechanism pulls and unwinds the film tape, it will not affect the film tape in the cutting area; at the same time, when the cutting area pulls and moves the film tape, it will not cause the film roll to unwind.

[0040] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and will be apparent to those skilled in the art based on the following examination and study, or may be taught from the practice of the present invention to some extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The accompanying drawings of the present utility model are as follows:

[0042] Figure 1 It is a side structural schematic diagram of the diaphragm traction structure for vulcanization of the gas meter diaphragm in the embodiment.

[0043] Figure 2 for Figure 1 Enlarged structural diagram at A in the middle.

[0044] Figure 3 for Figure 1 Enlarged structural diagram at B in the middle.

[0045] Figure 4 for Figure 1 Schematic diagram of the structure at the CC section.

[0046] Figure 5 for Figure 1 Schematic diagram of the structure of the DD section.

[0047] In the figure: 1. film roll; 21. introduction fixed roller; 22. introduction guide roller; 31. lead-out guide roller; 32. lead-out fixed roller; 41. rocker rod; 411. sleeve; 421. connecting rod; 422. cover; 423. elastic airbag; 43. air pump; 44. rocker arm; 45. first cylinder; 461. rectangular frame; 462. rotating roller; 51. pry bar; 52. pulling roller; 53. second cylinder; 6. film strip. DETAILED DESCRIPTION

[0048] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0049] Example:

[0050] like Figures 1 to 5 As shown, a diaphragm traction structure for vulcanization of a gas meter diaphragm comprises:

[0051] An introduction mechanism is located below the film roll 1;

[0052] The lead-out mechanism is located below the lead-in mechanism, and the film strip 6 is unrolled from the film roll 1 and passes through the lead-in mechanism and the lead-out mechanism in sequence;

[0053] An alternating extrusion fixing mechanism is arranged on one side of the introduction mechanism and the output mechanism, and alternately extrudes and fixes the film strip 6 rolled on the introduction mechanism and the output mechanism with the introduction mechanism and the output mechanism;

[0054] The pulling mechanism is arranged between the introduction mechanism and the output mechanism; after the film strip 6 is squeezed and fixed with the output mechanism, the pulling mechanism pulls the film strip 6 between the introduction mechanism and the output mechanism, so that the film roll 1 is unwound.

[0055] Through the introduction mechanism and the lead-out mechanism, a certain length is kept between the pulled film strip 6 and the cutting processing station, which is convenient for the drawing mechanism to reel and draw. The setting of the introduction mechanism and the lead-out mechanism provides a fixed basis for the film strip 6 of the alternate squeezing fixing mechanism to work, so that when the drawing mechanism draws and unwinds the film strip 6, it will not affect the film strip 6 in the cutting area; at the same time, when the cutting area draws and moves the film strip 6, it will not drive the film roll 1 to unwind.

[0056] In this embodiment, the introduction mechanism includes:

[0057] Introducing a fixed roller 21, located below the film roll 1;

[0058] The introduction guide roller 22 is located below the introduction fixed roller 21 and on the same side as the film roll 1 ; the alternating extrusion and fixing mechanism is located on the back side of the guide roller to extrude and fix the film strip 6 on the introduction fixed roller 21 .

[0059] The export mechanism comprises:

[0060] The outlet guide roller 31 is located below the inlet fixed roller 21;

[0061] The lead-out fixed roller 32 is located below the lead-out guide roller 31 and opposite to the film roll 1 . The alternating extrusion and fixing mechanism is located on one side of the lead-out fixed roller 32 to extrude and fix the film strip 6 on the lead-out fixed roller 32 .

[0062] By changing the running trajectory of the film tape 6 through the guiding roller, conditions are created for the film tape 6 of a certain area to be wound around the fixing roller, so that the alternating extrusion fixing mechanism can fix a larger area of ​​the film tape 6 and reduce the stress concentration of the film tape 6.

[0063] In this embodiment, the alternating extrusion and fixing mechanism includes:

[0064] The swing rod 41 is rotatably connected in the middle, and its two ends are respectively located on the outside of the introduction fixed roller 21 and the outlet fixed roller 32; the hinged part of the swing rod 41 is located on the mid-vertical line of the connection between the introduction fixed roller 21 and the outlet fixed roller 32;

[0065] Two airbag extrusion parts are respectively arranged at the two ends of the swing rod 41, and the extrusion parts are respectively facing the outer sides of the introduction fixed roller 21 and the outlet fixed roller 32;

[0066] The air pump 43, the gas distribution valve is connected to the two air bag extrusion parts;

[0067] A rocker arm 44, one end of which is connected to one end of the rocker rod 41;

[0068] The first cylinder 45 has an end that is rollingly engaged with the other end of the swing arm; the first cylinder 45 telescopes and drives the swing arm 44 and the swing rod 41 to rotate, so that the two airbag extrusion parts alternately squeeze the introduction fixed roller 21 and the output fixed roller 32.

[0069] By swinging the rocker 41 , the film strip 6 on the introduction fixing roller 21 and the discharge fixing roller 32 is alternately fixed.

[0070] In this embodiment, the airbag extrusion member includes:

[0071] A connecting rod 421, one end of which is connected to the swing rod 41;

[0072] The cover 422 is semi-tubular, and its back is connected to the other end of the connecting rod 421; the cover 422 is hollow inside, and the inside of the cover 422 is connected to the gas distribution valve of the air pump 43;

[0073] A plurality of elastic airbags 423 are arranged on the inner side of the cover shell 422 and are connected to the inside of the cover shell 422 . The elastic airbags 423 are directly opposite to the film strip 6 introduced onto the fixed roller 21 or the exiting fixed roller 32 , and their width is greater than that of the film strip 6 .

[0074] By inflating the elastic airbag 423, the elastic airbag 423 squeezes the film strip 6, so that the film strip 6 and the fixed roller are attached to each other.

[0075] In this embodiment, the elastic airbag 423 is in a strip shape, and the axis of the elastic airbag 423 is parallel to the axis of the corresponding outlet fixed roller 32 or the inlet fixed roller 21 .

[0076] This design allows the force direction of the membrane strip 6 to remain consistent, thereby reducing the occurrence of waves caused by uneven force on the membrane strip 6.

[0077] In this embodiment, a rolling and locking mechanism is provided at the telescopic end of the first cylinder 45; the rolling and locking mechanism comprises:

[0078] A rectangular frame 461 is connected to the telescopic end of the first cylinder 45;

[0079] The two rollers 462 are respectively and parallelly arranged on the rectangular frame 461 ; the rocker arm 44 passes through the gap between the two rollers 462 and is rollingly engaged with the rollers 462 .

[0080] The smooth movement of the swing is ensured by the roller 462.

[0081] In this embodiment, a sleeve 411 with an internal thread is provided at the end of the swing rod 41 ; an external thread matching the sleeve 411 is provided at one end of the rocker arm 44 , and the swing rod 41 is threadedly connected to the rocker arm 44 .

[0082] The sleeve 411 facilitates installation.

[0083] In this embodiment, the pulling mechanism includes:

[0084] A pry bar 51, hinged at the upper part;

[0085] A pulling roller 52 is connected to the lower end of the tilting rod; the pulling roller 52 is directly opposite to the film strip 6 between the introduction guide roller 22 and the output guide roller 31;

[0086] The second cylinder 53 is disposed on the upper portion of the pry bar 51 , and drives the pry bar 51 to rotate when it is extended or retracted, so that the pulling roller 52 swings.

[0087] The pry bar 51 and the pulling roller 52 form an L shape, and the second cylinder 53 is located outside the end surface of one side of the film strip 6.

[0088] The diaphragm traction structure for vulcanization of the gas meter diaphragm in this embodiment works as follows: first, the diaphragm roll 1 is manually pulled out, and then the diaphragm roll 1 is pulled out according to the diaphragm traction structure. Figure 1 As shown, after winding, the end of the film roll 1 is placed in the cutting station.

[0089] At this time, the first air cylinder 45 is controlled to shorten, so that the swing rod 41 rotates clockwise, until the cover 422 is located on the outer surface of the outlet fixed roller 32, and the air pump 43 is started to allow gas to enter the elastic airbag 423 facing the outlet fixed roller 32, and the elastic airbag 423 expands and deforms to squeeze and fix the film strip 6 on the outlet fixed roller 32. At this time, the second air cylinder 53 is started to extend, so that the pry bar 51 rotates, forcing the pulling roller 52 to rise, and exerting force on the film strip 6 located between the outlet guide roller 31 and the inlet guide roller. Under the action of this force, the film roll 1 begins to rotate and unwind. After unwinding to a certain amount, the second air cylinder 53 is controlled to stop extending.

[0090] At this time, the air pump 43 is turned off, the elastic airbag 423 retracts and separates from the film, and then the first air cylinder 45 is controlled to extend, so that the swing rod 41 rotates counterclockwise, and the air pump 43 is started again, and similarly, the film strip 6 introduced onto the fixed roller 21 is fixed. Then the cutting station pulls the film for cutting, and at the same time, the second air cylinder 53 is controlled to shorten, and the pulling roller 52 falls under the action of gravity, so that the unwound film falls naturally and is just taken away by the cutting station, preventing the film from piling up again.

[0091] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution, which should be included in the scope of the claims of the utility model.

Claims

1. A diaphragm traction structure for vulcanization of gas meter diaphragm, characterized in that: include: An introduction mechanism is located below the film roll; The export mechanism is located below the introduction mechanism, and the film strip is unwound from the film roll and passes through the introduction mechanism and the export mechanism in sequence; An alternating extrusion fixing mechanism is arranged on one side of the introduction mechanism and the output mechanism, and alternately extrudes and fixes the film tape rolled on the introduction mechanism and the output mechanism to the introduction mechanism and the output mechanism; The pulling mechanism is arranged between the introducing mechanism and the exporting mechanism; after the film strip is squeezed and fixed with the exporting mechanism, the pulling mechanism pulls the film strip between the introducing mechanism and the exporting mechanism to unwind the film roll.

2. The diaphragm traction structure for vulcanization of gas meter diaphragm according to claim 1, characterized in that: The introduction mechanism comprises: Introduce a fixed roller, located below the film roll; The introduction guide roller is located below the introduction fixed roller and on the same side as the film roll; the alternating extrusion and fixing mechanism is located on the back side of the guide roller to extrude and fix the film strip on the introduction fixed roller.

3. The diaphragm traction structure for vulcanization of gas meter diaphragm according to claim 2, characterized in that: The export mechanism comprises: The lead-out guide roller is located below the lead-in fixed roller; The lead-out fixed roller is located below the lead-out guide roller and opposite to the film roll direction; the alternating extrusion and fixing mechanism is located on one side of the lead-out fixed roller to extrude and fix the film strip on the lead-out fixed roller.

4. The diaphragm pulling structure for vulcanization of the gas meter diaphragm according to claim 3, characterized in that: The alternating extrusion and fixing mechanism comprises: A swing rod, the middle of which is rotatably connected, and the two ends are respectively located on the outside of the introduction fixed roller and the outlet fixed roller; the hinged part of the swing rod is located on the mid-vertical line of the connection between the introduction fixed roller and the outlet fixed roller; Two airbag extrusion parts are respectively arranged at two ends of the swing rod, and the extrusion parts are respectively facing the outer sides of the introduction fixed roller and the outlet fixed roller; An air pump with a gas distribution valve, the gas distribution valve being connected to two air bag extrusion members; A rocker arm, one end of which is connected to one end of the rocker rod; The first cylinder has an end that is rollingly engaged with the other end of the swing arm; the first cylinder telescopes to drive the swing arm and the swing rod to rotate, so that the two airbag extrusion parts alternately squeeze the introduction and extraction of the fixed roller.

5. The diaphragm pulling structure for vulcanization of the gas meter diaphragm according to claim 4, characterized in that: The airbag extrusion comprises: A connecting rod, one end of which is connected to the swing rod; The cover is in a semi-tubular shape, and the back is connected to the other end of the connecting rod; the inside of the cover is hollow, and the inside of the cover is connected to the gas distribution valve of the air pump; A plurality of elastic air bags are arranged on the inner side of the cover shell and communicated with the inside of the cover shell. The elastic air bags are directly opposite to the film strip introduced into or led out of the fixed roller, and the width of the elastic air bags is greater than the width of the film strip.

6. The diaphragm pulling structure for vulcanization of the gas meter diaphragm according to claim 5, characterized in that: The elastic airbag is in a strip shape, and the axis of the elastic airbag is parallel to the axis of the corresponding outlet fixed roller or the inlet fixed roller.

7. The diaphragm pulling structure for vulcanization of the gas meter diaphragm according to claim 4, characterized in that: The telescopic end of the first cylinder is provided with a rolling and locking mechanism; the rolling and locking mechanism comprises: A rectangular frame connected to the telescopic end of the first cylinder; Two rotating rollers are respectively and parallelly arranged on the rectangular frame; the rocker arm passes through the gap between the two rotating rollers and is rotatably engaged with the rotating rollers.

8. The diaphragm pulling structure for vulcanization of the gas meter diaphragm according to claim 7, characterized in that: The end of the swing rod is provided with a sleeve with an internal thread; one end of the rocker arm is provided with an external thread matching the sleeve, and the swing rod is threadedly connected to the rocker arm.

9. The diaphragm pulling structure for vulcanization of the gas meter diaphragm according to claim 3, characterized in that: The pulling mechanism comprises: Pry bar, hinged at the top; A pulling roller is connected to the lower end of the tilting rod; the pulling roller is directly opposite to the film strip between the introduction guide roller and the output guide roller; The second cylinder is arranged on the upper part of the pry bar, and drives the pry bar to rotate when the second cylinder is extended or retracted, so that the pulling roller swings.

10. The diaphragm pulling structure for vulcanization of the gas meter diaphragm according to claim 9, characterized in that: The pry bar and the pulling roller form an L shape, and the second cylinder is located outside the end surface of one side of the film strip.

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