Membrane discharging system for membrane type gas meter

Abstract

The invention discloses a membrane type fuel gas surface membrane blanking system. The system comprises a membrane winding roller; the drawing mechanism is wound with the film tape unwound from the film winding roller; the feeding mechanism is arranged at the tail end of the traction mechanism, and the film belt enters the feeding mechanism after being dragged by the traction mechanism; and the cutting mechanism is arranged on the feeding mechanism and is used for cutting the film belt on the feeding mechanism. According to the device, the conditions that waves are caused by uneven stress when the film belt is unwound and the stress is too concentrated when the film belt is drawn at a cutting station can be effectively reduced; in the feeding and cutting process, the film belt is kept tensioned to be flat, the cutting quality is guaranteed, meanwhile, due to high-precision positioning feeding, the cut film can be directly used without subsequent shaping treatment, the fine trimming and shaping treatment process is reduced, the cost is reduced, and meanwhile the production efficiency is improved; and a film belt with an interlayer can be powerfully and thoroughly cut, so that the frequency of maintenance is reduced.

Description

TECHNICAL FIELD

[0001] The application relates to the field of diaphragm size processing of gas meters, and particularly relates to a diaphragm under-skin cutting system of a diaphragm gas meter. BACKGROUND

[0002] The diaphragm gas meter is a metering device for metering gas use, and the working principle of the diaphragm gas meter is mainly based on the volume method, that is, cumulative metering is performed by measuring the gas volume flow. The working process is as follows: when the gas enters the gas meter, a pressure difference is generated at both ends of the gas meter inlet and outlet, the pressure difference drives the diaphragm to reciprocate in the metering chamber, and simultaneously drives the gas distribution mechanism to coordinate gas distribution. Each reciprocation of the diaphragm will discharge a certain amount of gas, and when the roller turns through a counting unit, one roller rotation metering display is realized, thereby realizing cumulative metering of the gas. In addition, the driving force of the diaphragm movement is the gas pressure difference at the inlet and outlet of the gas meter, and when the diaphragm moves to the limit position on one side, another diaphragm needs to generate the same driving force to drive the first diaphragm to return, thereby realizing continuous automatic metering.

[0003] Therefore, the diaphragm in the diaphragm gas meter is a very important part, and the manufacturing process is diaphragm cutting, vulcanization and the like.

[0004] Before cutting, the diaphragm in a roll and having certain adhesion needs to be separated and cut at a fixed length. In the current cutting process, the diaphragm roll is directly pulled, which is easy to cause excessive force to be applied at the pulling position, resulting in diaphragm deformation, and simultaneously causing the diaphragm strip unwound from the diaphragm roll to form waves, so that the diaphragm produced in the subsequent vulcanization process and the like has low quality.

[0005] The conventional cutting of the diaphragm strip with a clamping layer cannot cut the clamping layer and the butadiene rubber at the same time, and currently, the cutting or gate cutting mode is generally adopted. For the cutting mode, a cutting force receiving member needs to be arranged below the diaphragm strip. After long-term cutting, the surface of the force receiving member will form a cutting groove (the diaphragm strip will be clamped in the groove, resulting in incomplete cutting of the clamping layer to form “broken but connected”) or the sharpness of the cutting knife will decrease (which will also result in incomplete cutting). The cutting position fluctuation mode is generally adopted to avoid the formation of the cutting groove or the force receiving member is frequently replaced to cope with the cutting groove, and the cutting knife is frequently replaced to solve the sharpness problem. For the gate cutting mode, although there is no problem of the force receiving member of the cutting mode, a small gap (best without) needs to be kept between the cutting knife and the gate to smoothly cut the clamping layer, but the current gate cutting equipment has the problem that the fluctuation between the cutting knife and the gate increases after being used for a period of time, resulting in incomplete cutting of the clamping layer, and frequent maintenance is required.

[0006] The cutting of the film strip needs to pull up the film strip and cut according to a given length, and then vulcanize and shape. Since the film strip has high elasticity, if the tension of the film strip is not in place during cutting, the film strip is prone to deformation after cutting. In addition, due to the elastic property of the film strip, the size accuracy of the cut film strip is not high, and the film strip needs to be processed again in the shaping process after vulcanization. SUMMARY

[0007] In view of the above defects of the prior art, the purpose of the present application is to provide a membrane type gas meter skin film cutting system, which can effectively reduce the uneven stress of the film strip during unwinding and the excessive stress concentration of the film strip during cutting; keep the tension of the film strip flat during feeding and cutting to ensure the cutting quality, and high-precision positioning feeding makes the cut film strip not need subsequent shaping treatment and can be directly used, reducing the processing technology of fine shaping, reducing the cost and improving the production efficiency; the film strip with a sandwich can be cut open completely, reducing the maintenance frequency.

[0008] The purpose of the present application is achieved by the following technical solutions:

[0009] A membrane type gas meter skin film cutting system, comprising:

[0010] A film roll;

[0011] A traction mechanism that winds the film strip unwound from the film roll;

[0012] A feeding mechanism arranged at the end of the traction mechanism, through which the film strip is pulled by the traction mechanism;

[0013] A cutting mechanism arranged on the feeding mechanism and cutting the film strip on the feeding mechanism;

[0014] The traction mechanism comprises:

[0015] An introduction mechanism located below the film roll;

[0016] An export mechanism located below the introduction mechanism, through which the film strip unwound from the film roll passes in sequence;

[0017] An alternating extrusion and fixing mechanism arranged on one side of the introduction mechanism and the export mechanism, which alternately extrudes and fixes the film strip wound on the introduction mechanism and the export mechanism with the introduction mechanism and the export mechanism;

[0018] A pulling mechanism arranged between the introduction mechanism and the export mechanism; after the film strip is extruded and fixed with the export mechanism, the pulling mechanism pulls the film strip between the introduction mechanism and the export mechanism, so that the film roll is unwound;

[0019] The feeding mechanism comprises:

[0020] a support platform, in the shape of a strip, with a horizontal upper surface, the width of the support platform being less than the width of the film strip; a cutting area being provided in the middle of the support platform;

[0021] a quantitative transfer mechanism, provided at the head end of the support platform, the moving end of the quantitative transfer mechanism moving in a direction parallel to the length of the support platform;

[0022] a back tension control mechanism, provided at the rear end of the support platform, the moving end of the back tension control mechanism moving in a direction parallel to the length of the support platform; the cutting area being located between the quantitative transfer mechanism and the back tension control mechanism;

[0023] two tensioning mechanisms, respectively provided on the quantitative transfer mechanism and the back tension control mechanism; the tensioning mechanism on the quantitative transfer mechanism fixing the head end of the film strip in a tensioned state; the tensioning mechanism on the back tension control mechanism fixing the middle part of the film strip in a tensioned state on the support platform;

[0024] the cutting mechanism comprising:

[0025] a lifting mechanism, provided vertically downwards, above the cutting area of the support platform;

[0026] a positioning plate, provided directly below the lifting mechanism; the upper end of the positioning plate being provided with a gap for the film strip to pass through;

[0027] a pre-pressing mechanism, connected to the telescopic end of the lifting mechanism;

[0028] a pressing plate, connected to the pre-pressing mechanism, located in the gap of the positioning plate, the lower end surface of the pressing plate being in contact with the bottom surface of the gap of the positioning plate; the outer side surface of the pressing plate being parallel to the outer side surface of the positioning plate; when the telescopic end of the lifting mechanism continues to extend after the pressing plate interferes with the gap of the positioning plate, the telescopic end of the lifting mechanism can continue to extend;

[0029] a cutting plate, horizontally slidingly and clippably connected to the telescopic end of the lifting mechanism through the pre-pressing mechanism, located on the outer side of the positioning plate; the horizontal height of the lower end surface of the cutting plate being higher than the horizontal height of the lower end surface of the pressing plate after the lifting mechanism is shortened;

[0030] a force-accumulating stamping mechanism, provided on the positioning plate, interfering with the cutting plate; when the lifting mechanism is lowered, the cutting plate interferes with the force-accumulating stamping mechanism, until the telescopic end of the lifting mechanism is extended beyond a predetermined value, the force-accumulating stamping mechanism releases the cutting plate from the limiting;

[0031] a side pressing mechanism, provided on the positioning plate, applying a force to the cutting plate to press it outwards when the telescopic end of the lifting mechanism is extended.

[0032] Further, the introducing mechanism comprises,

[0033] an introducing fixed roller, located below the film roll;

[0034] The guide roller is arranged below the leading fixed roller and on the same side of the film roll roller.

[0035] The leading mechanism comprises:

[0036] The leading guide roller is arranged below the leading fixed roller.

[0037] The leading fixed roller is arranged below the leading guide roller and on the opposite side of the film roll roller; the alternate pressing and fixing mechanism is arranged on one side of the leading fixed roller and presses and fixes the film strip on the leading fixed roller.

[0038] The leading mechanism comprises:

[0039] The lever is hingedly connected at the upper portion.

[0040] The pulling roller is connected to the lower end of the lever; the pulling roller is opposite to the film strip between the leading guide roller and the leading fixed roller.

[0041] The second cylinder is arranged at the upper portion of the lever and drives the lever to rotate when the second cylinder is extended or retracted, so that the pulling roller swings.

[0042] The lever and the pulling roller are in L shape, and the second cylinder is arranged outside the end surface of the film strip.

[0043] Further, the alternate pressing and fixing mechanism comprises:

[0044] The swing lever is rotatably connected at the middle portion and arranged outside the leading fixed roller and the leading fixed roller at two ends; the hinge of the swing lever is arranged on the perpendicular line connecting the leading fixed roller and the leading fixed roller.

[0045] The two air bag pressing members are arranged at the two ends of the swing lever and press the outside of the leading fixed roller and the leading fixed roller, respectively.

[0046] The air pump with a gas distribution valve is in communication with the two air bag pressing members.

[0047] The swing arm is connected to one end of the swing lever.

[0048] The first cylinder is rotatably connected to the other end of the swing arm; the first cylinder drives the swing arm and the swing lever to rotate when the first cylinder is extended or retracted, so that the two air bag pressing members alternately press the leading fixed roller and the leading fixed roller.

[0049] The air bag pressing member comprises:

[0050] The connecting rod is connected to the swing lever at one end.

[0051] The housing is in half-pipe shape and connected to the other end of the connecting rod at the back portion; the housing is hollow inside; the housing is in communication with the gas distribution valve of the air pump.

[0052] a plurality of elastic air bags arranged on the inner side of the housing and in communication with the interior of the housing, the elastic air bags being opposite to the film tape on the leading-in fixed roller or the leading-out fixed roller and having a width greater than that of the film tape;

[0053] the elastic air bags are in the form of strips, and the axis of the elastic air bags is parallel to the axis of the corresponding leading-out fixed roller or leading-in fixed roller;

[0054] the first cylinder is provided with a rolling clamping mechanism; the rolling clamping mechanism comprises:

[0055] a rectangular frame connected to the retractable end of the first cylinder;

[0056] two rotating rollers respectively and parallel to each other and sleeved on the rectangular frame; the rocker arm is clamped and rolled with the rotating rollers through the gap between the two rotating rollers;

[0057] the end of the swing rod is provided with a sleeve with internal threads; one end of the rocker arm is provided with external threads matched with the sleeve, and the swing rod is threadedly connected with the rocker arm.

[0058] Further, the tensioning mechanism arranged on the quantitative transfer mechanism comprises:

[0059] a tensioning plate arranged on the moving end of the quantitative transfer mechanism;

[0060] at least one tensioning smooth rail arranged horizontally on the tensioning plate; the axis of the tensioning smooth rail is perpendicular to the length direction of the support table;

[0061] a lead screw provided with thread parts with opposite thread directions at both ends; the lead screw is arranged on the tensioning plate in parallel with the tensioning smooth rail;

[0062] a servo motor arranged on the tensioning plate and connected with one end of the lead screw;

[0063] two clamping mechanisms respectively connected with the horizontal smooth rail in sliding mode and threadedly connected with the two thread parts of the lead screw; the clamping mechanisms are away from or close to each other under the forward rotation or reverse rotation of the servo motor;

[0064] the servo motor is coaxially arranged on the end surface of the tensioning torsion spring and the lead screw.

[0065] Further, the clamping mechanism comprises:

[0066] a clamping jaw cylinder provided with a clamping sliding groove matched with the tensioning smooth rail and a threaded hole matched with the thread part of the lead screw;

[0067] two clamping plates respectively connected with the two moving parts of the clamping jaw cylinder; the length direction of the clamping plates is parallel to the length direction of the support table; the lower clamping surfaces of the two clamping plates are flush with the surface of the support table under the control of the clamping jaw cylinder.

[0068] The end pressure mechanism comprises two end pressure cylinders arranged vertically upward on the tensioning plate and located at the front end of the tensioning rail; an end pressure plate connected with the telescopic ends of the two end pressure cylinders; the lower surface of the end pressure plate is parallel to the upper surface of the bearing platform; two pressure receiving cylinders arranged on the tensioning plate and located directly below the end pressure plate; a pressure receiving plate connected with the two pressure receiving cylinders, the upper plate surface of the pressure receiving plate is parallel to the upper surface of the bearing platform; the width of the extrusion surface of the pressure receiving plate and the end pressure plate is greater than the width of the film strip; the bearing platform is provided with a notch in the area corresponding to the pressure receiving cylinder and the pressure receiving plate on the rear tensioning control mechanism for displacement of the pressure receiving cylinder and the pressure receiving plate;

[0069] The top pressure fixing device is located upstream of the cutting area on the bearing platform; the top pressure fixing device comprises:

[0070] A top pressure cylinder arranged vertically downward;

[0071] A top pressure plate connected with the telescopic end of the top pressure cylinder, the lower plate surface of which is parallel to the upper surface of the bearing platform; the width of the top pressure plate is greater than the width of the bearing platform.

[0072] Further, the rear tensioning control mechanism is a lead screw translation structure; the servo motor of the rear tensioning control mechanism is also connected with the lead screw through the rear tensioning torsional spring.

[0073] Further, the opposite sides of the notch of the positioning plate are provided with clamping grooves; the opposite sides of the pressure plate are provided with clamping protrusions corresponding to the clamping grooves;

[0074] The pre-pressing mechanism comprises two pre-pressing springs arranged vertically, which respectively connect the upper end surfaces of the pressure plate and the cutting plate with the telescopic ends of the lifting mechanism.

[0075] Further, the two side end surfaces of the cutting plate are provided with outward protruding ear plates; the positioning plate is provided with a strip-shaped hole opposite the ear plates;

[0076] The force storage stamping mechanism is two, arranged on the two sides of the positioning plate opposite the two ear plates; the force storage stamping mechanism comprises:

[0077] A rotating rod hinged in the middle in the strip-shaped hole; the rotating plane of the rotating rod is perpendicular to the plate surface of the positioning plate;

[0078] A force storage spring arranged on the inner side of the positioning plate, one end of which is connected with the plate surface of the positioning plate and the other end of which is connected with the tail of the rotating rod, controls the head of the rotating rod to extend out of the outer side of the positioning plate and is located directly below the ear plate; under the elongation of the lifting mechanism, the ear plate pushes the rotating rod to rotate, so that the head of the rotating rod turns into the strip-shaped hole;

[0079] The inner side of the positioning plate is provided with a support plate, and the force storage spring is connected with the positioning plate through the support plate;

[0080] The upper surface of the head of the rotating rod is provided with a force storage groove with a curved cross section, and the lower surface of the head of the rotating rod is provided with an inclined guide surface which forms an obtuse angle with the surface of the positioning plate; the lower surface and the inner side surface of the ear plate are rounded; and the upper surface and the inner side surface of the ear plate are rounded.

[0081] Further, the side pressing mechanism comprises at least two groups of side pressing assemblies which are arranged on the two sides of the cutting plate respectively; the side pressing assembly comprises:

[0082] A side pressing protrusion is arranged on the cutting plate, and the outer end surface thereof is an inclined surface which inclines downward;

[0083] An elastic side pressing head is fixedly connected with the positioning plate; the inner end surface of the elastic side pressing head faces the side pressing protrusion; the inner end surface of the elastic side pressing head is inclined, and the inclination degree thereof is the same as that of the outer end surface of the side pressing protrusion; when the lifting mechanism is reset, a gap is left between the elastic side pressing head and the side pressing protrusion; when the lifting mechanism is elongated, the inner end surface of the elastic side pressing head and the outer end surface of the side pressing protrusion slide and press;

[0084] The elastic side pressing head comprises:

[0085] A bottom sleeve is in the shape of an open barrel, and the opening thereof faces the cutting plate; the bottom sleeve is fixedly connected with the positioning plate;

[0086] A pressing spring is arranged in the bottom sleeve;

[0087] A side head is sleeved in the bottom sleeve and abuts against the pressing spring; the exposed end surface of the side head is provided with an inclined surface which matches the outer end surface of the side pressing protrusion.

[0088] Further, the lifting mechanism comprises:

[0089] A bottom plate is connected with the cutting plate and the pressing plate through the pre-pressing mechanism through the lower surface thereof;

[0090] A lifting cylinder is vertically arranged, and the telescopic end thereof is connected with the upper surface of the bottom plate;

[0091] A fixed plate is fixedly connected with the bottom of the lifting cylinder through the lower surface thereof;

[0092] A plurality of guide columns are fixedly connected with the upper surface of the bottom plate through the lower ends thereof, and the upper ends thereof are slidingly connected with the fixed plate;

[0093] The lower surface of the bottom plate is provided with at least two limiting sliding grooves which are perpendicular to the outer surface of the positioning plate; a clamping sliding block is arranged in the limiting sliding groove; and the sliding block is connected with the upper end surface of the cutting plate through a pre-pressing spring.

[0094] Due to the adoption of the above technical scheme, the present application has the following advantages:

[0095] 1. By introducing mechanism and leading-out mechanism, a certain length is reserved between the pulled-out film strip and the cutting processing station, facilitating the winding pulling of the pulling mechanism. The setting of the introducing mechanism and the leading-out mechanism provides a fixed basis for the film strip work of the alternate extrusion fixing mechanism, so that the pulling mechanism does not affect the film strip in the cutting area when pulling the unwound film strip; at the same time, the film roll reel is not unwound when the cutting area pulls and moves the film strip.

[0096] 2. By the quantitative moving mechanism, the film strip can be quantitatively transferred to the cutting station after each cutting, for quantitative cutting, to ensure that the cutting size does not deviate greatly each time, and to ensure accurate cutting amount through the rear tension control device and the tensioning mechanism.

[0097] 3. The rear tension control device can exert a longitudinal pulling force on the film piece to be cut, to ensure that the film piece is longitudinally tensioned and flattened, and the transverse direction of the film strip is tensioned by the tensioning mechanism, so that the entire film piece to be cut is tensioned and flattened in the horizontal two-dimensional direction, providing a basis for accurate cutting.

[0098] 4. The bearing platform supports the movement of the film piece, and supports the weight of the film piece in the longitudinal direction during tensioning, reducing and avoiding deformation of the film piece due to gravity.

[0099] 5. The pre-pressing mechanism can realize the single lifting mechanism to complete the pressing and fixing of the film strip required for cutting, and the smooth cutting of the cutting plate, without the need for two separate motion mechanisms to control, so the structure is simple and the cost is lower.

[0100] 6. The force of the lifting mechanism is accumulated by the force-accumulating stamping mechanism to form a high-g cutting force, ensuring that the film strip sandwich can be smoothly cut.

[0101] 7. The side pressure mechanism can minimize the gap between the cutting plate and the pressing plate during the cutting process, thereby making the cutting process more smooth.

[0102] Other advantages, objects, and features of the present application will be apparent to those skilled in the art from the following specification, in some degree of certainty, and in some degree of certainty, based on the study of the following, or can be taught from the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0103] The drawings of the present application are as follows:

[0104] Figure 1 It is a front view structural schematic diagram of the pulling mechanism in the embodiment.

[0105] Figure 2 It isFigure 1 Enlarged view of structure at B.

[0106] Figure 3 For Figure 1 Enlarged view of structure at B.

[0107] Figure 4 For Figure 1 Enlarged view of structure at B.

[0108] Figure 5 For Figure 1 Enlarged view of structure at B.

[0109] Figure 6 For Enlarged view of structure at B.

[0110] Figure 7 Figure 6 For Enlarged view of structure at B.

[0111] Figure 8 Figure 6 For Enlarged view of structure at B.

[0112] Figure 9 For

[0113] Enlarged view of structure at B. Figure 10

[0114] For Figure 11 Enlarged view of structure at B.

[0115] Figure 12 For Figure 11 Enlarged view of structure at B.

[0116] Figure 13 For Figure 11 Enlarged view of structure at B.

[0117] Figure 14 For Figure 13 Enlarged view of structure at B.

[0118] Figure 15 For Figure 11 Enlarged view of structure at B.

[0119] Figure 16 For Figure 15 Enlarged view of structure at B.

[0120] Figure 17 For Figure 11 Enlarged view of structure at B.

[0121] Figure 18 For Figure 17 Amplification structure diagram in N.

[0122] Figure 19 For Figure 11 Structure diagram in P-P profile.

[0123] In the figure: 1-1. Film roll roller; 1-2. Film belt;

[0124] 2-21. Lead-in fixed roller; 2-22. Lead-in guide roller; 2-31. Lead-out guide roller; 2-32. Lead-out fixed roller; 2-41. Swing lever; 2-411. Sleeve; 2-421. Connecting rod; 2-422. Cover; 2-423. Elastic air bag; 2-43. Air pump; 2-44. Rocking arm; 2-45. First air cylinder; 2-461. Rectangular frame; 2-462. Rotating roller; 2-51. Crowbar; 2-52. Pulling roller; 2-53. Second air cylinder;

[0125] 3-1. Bearing platform; 3-11. Cutting area; 3-2. Quantitative transfer mechanism; 3-3. Back tension control mechanism; 3-31. Back tension torsion spring; 3-4. Tensioning mechanism; 3-41. Tensioning plate; 3-42. Tensioning smooth rail; 3-43. Screw rod; 3-431. Threaded part; 3-44. Servo motor; 3-451. Clamping jaw air cylinder; 3-452. Clamping plate; 3-46. Tensioning torsion spring; 3-47. End pressure air cylinder; 3-48. End pressure plate; 3-49. Bearing pressure air cylinder; 3-50. Bearing pressure plate; 3-61. Top pressure air cylinder; 3-62. Top pressure plate.

[0126] 4-11. Bottom plate; 4-111. Limiting sliding groove; 4-112. Clamping sliding block; 4-12. Lifting air cylinder; 4-13. Fixed plate; 4-14. Guide column; 4-2. Positioning plate; 4-21. Notch; 4-211. Clamping sliding groove; 4-22. Strip-shaped hole; 4-23. Support plate; 4-31. Pre-pressing spring; 4-4. Pressing plate; 4-41. Clamping protrusion; 4-5. Cutting plate; 4-51. Ear plate; 4-52. Clamping sliding rail; 4-61. Rotating lever; 4-611. Force storage groove; 4-612. Guide surface; 4-62. Force storage spring; 4-71. Side pressure protrusion; 4-721. Bottom sleeve; 4-722. Extrusion spring; 4-723. Side head. DETAILED DESCRIPTION

[0127] The application will be further described below in conjunction with the drawings and examples.

[0128] Example:

[0129] As Figure 1 , 6 , 11, the film type gas meter film understock system, comprising:

[0130] a film roll 1-1;

[0131] a traction mechanism, which winds the film strip 1-2 unwound from the film roll 1-1;

[0132] a feeding mechanism, which is arranged at the end of the traction mechanism and into which the film strip 1-2 is fed after being wound by the traction mechanism;

[0133] a cutting mechanism, which is arranged on the feeding mechanism and cuts the film strip 1-2 located on the feeding mechanism;

[0134] The traction mechanism comprises:

[0135] an introduction mechanism, which is located below the film roll 1-1;

[0136] an export mechanism, which is located below the introduction mechanism, and through which the film strip 1-2 unwound from the film roll 1-1 passes in sequence;

[0137] an alternating pressing and fixing mechanism, which is arranged on one side of the introduction mechanism and the export mechanism, and alternately presses and fixes the film strip 1-2 wound on the introduction mechanism and the export mechanism with the introduction mechanism and the export mechanism;

[0138] a pulling mechanism, which is arranged between the introduction mechanism and the export mechanism; after the film strip 1-2 is pressed and fixed with the export mechanism, the pulling mechanism pulls the film strip 1-2 between the introduction mechanism and the export mechanism, so that the film roll 1-1 is unwound.

[0139] The feeding mechanism comprises:

[0140] a support platform 3-1, which is in the shape of a long strip and has a horizontal upper surface, the width of the support platform 3-1 being smaller than the width of the film strip 1-2; a cutting area 3-11 is arranged in the middle of the support platform 3-1;

[0141] a quantitative transfer mechanism 3-2, which is arranged at the head end of the support platform 3-1, and the moving direction of the moving end thereof is parallel to the length direction of the support platform 3-1;

[0142] a back tension control mechanism 3-3, which is arranged at the rear end of the support platform 3-1; the moving direction of the moving end thereof is parallel to the length direction of the support platform 3-1; and the cutting area 3-11 is located between the quantitative transfer mechanism 3-2 and the back tension control mechanism 3-3;

[0143] two tensioning mechanisms 3-4, which are respectively arranged on the quantitative transfer mechanism 3-2 and the back tension control mechanism 3-3; the tensioning mechanism 3-4 on the quantitative transfer mechanism 3-2 fixes and tensions the head end of the film strip 1-2; and the tensioning mechanism 3-4 on the back tension control mechanism 3-3 tensions and fixes the middle part of the film strip 1-2 on the support platform 3-1.

[0144] The cutting mechanism comprises:

[0145] Lifting mechanism, vertically downwardly arranged;

[0146] Positioning plate 4-2, arranged directly below the lifting mechanism; upper end provided with a gap 4-21 for the film tape 1-2 to pass through;

[0147] Pre-pressing mechanism, connected with the telescopic end of the lifting mechanism;

[0148] Pressing plate 4-4, connected with the pre-pressing mechanism, located within the gap 4-21 of the positioning plate 4-2, and the lower end surface is in close contact with the bottom surface of the gap 4-21 of the positioning plate 4-2; the outer side surface of the pressing plate 4-4 is parallel to the outer side surface of the positioning plate 4-2; when the telescopic end of the lifting mechanism continues to extend after the pressing plate 4-4 abuts against the gap 4-21 of the positioning plate 4-2 through the pre-pressing mechanism, the telescopic end of the lifting mechanism can continue to extend;

[0149] Cutting plate 4-5, horizontally slidingly clamped and connected with the telescopic end of the lifting mechanism through the pre-pressing mechanism, located outside the positioning plate 4-2; the horizontal height of the lower end surface of the cutting plate 4-5 is higher than that of the pressing plate 4-4 after the telescopic end of the lifting mechanism is shortened;

[0150] Energy storage stamping mechanism, arranged on the positioning plate 4-2 and interfering with the cutting plate 4-5; when the lifting mechanism is lowered, the cutting plate 4-5 interferes with the energy storage stamping mechanism, until the telescopic end of the lifting mechanism is extended beyond a predetermined value, the energy storage stamping mechanism releases the limiting of the cutting plate 4-5;

[0151] Side pressing mechanism, arranged on the positioning plate 4-2 and applying a force to the cutting plate 4-5 to extrude outwardly when the telescopic end of the lifting mechanism is extended.

[0152] By introducing the mechanism and the leading-out mechanism, a certain length is reserved between the pulled-out film tape 1-2 and the cutting processing station, facilitating the winding and pulling of the pulling mechanism. The arrangement of the introducing mechanism and the leading-out mechanism provides a fixed basis for the work of the alternating extrusion and fixing mechanism of the film tape 1-2, so that the pulling mechanism does not affect the film tape 1-2 in the cutting area when pulling and unwinding the film tape 1-2; at the same time, the film tape 1-2 in the cutting area does not drive the film roll 1-1 to unwind when the film tape 1-2 is pulled and moved.

[0153] Through the quantitative moving mechanism, the film strip 1-2 can be quantitatively moved to the cutting station after each cutting, and the cutting is quantitatively carried out, so that the cutting size will not have a large deviation each time, and the accurate cutting amount is ensured through the back tension control device and the tensioning mechanism 3-4. The back tension control device can exert a longitudinal pulling force on the film to be cut, so that the film is longitudinally tensioned and flattened, the transverse direction of the film strip 1-2 is tensioned by the tensioning mechanism 3-4, so that the entire film to be cut is subjected to force in the horizontal two-dimensional direction, so that it is tensioned and flattened, and a basis is provided for accurate cutting. The platform 3-1 serves as a platform for moving the film, and at the same time provides support for the weight of the film in the longitudinal direction during tensioning, thereby reducing and avoiding deformation of the film due to gravity.

[0154] The pre-pressing mechanism can realize the single lifting mechanism, which can realize the pressing and fixing of the film strip 1-2 required for cutting, and the smooth cutting of the cutting plate 4-5, without the need for two separate motion mechanisms to control, so that the structure is simple and the cost is lower. The force of the lifting mechanism is accumulated through the force storage stamping mechanism to form a high-g cutting force, so that the film strip 1-2 interlayer can be smoothly cut. Through the side pressing mechanism, the gap between the cutting plate 4-5 and the pressing plate 4-4 and the positioning plate 4-2 can be reduced as much as possible during the cutting process, so that the cutting process is more smooth.

[0155] As shown in Figures 1-5 the introduction mechanism includes,

[0156] The introduction fixed roller 2-21 is located below the film roll 1-1.

[0157] The introduction guide roller 2-22 is located below the introduction fixed roller 2-21 and is on the same side as the film roll 1-1. The alternating extrusion fixing mechanism is located on the back side of the guide roller and extrudes and fixes the film strip 1-2 on the introduction fixed roller 2-21.

[0158] The export mechanism includes:

[0159] The export guide roller 2-31 is located below the introduction fixed roller 2-21.

[0160] The export fixed roller 2-32 is located below the export guide roller 2-31 and is opposite to the film roll 1-1. The alternating extrusion fixing mechanism is located on one side of the export fixed roller 2-32 and extrudes and fixes the film strip 1-2 on the export fixed roller 2-32.

[0161] The running track of the film strip 1-2 is changed by the guide roller, which creates conditions for the film strip 1-2 wound on the fixed roller in a certain area, so that the alternating extrusion fixing mechanism can fix a larger area of the film strip 1-2, reducing the stress concentration of the film strip 1-2.

[0162] In the embodiment, the alternate extrusion fixing mechanism comprises:

[0163] A swing rod 2-41 is rotatably connected in the middle and has two ends respectively located outside the leading fixed roller 2-21 and the leading-out fixed roller 2-32; the hinged part of the swing rod 2-41 is located on the perpendicular line connecting the leading fixed roller 2-21 and the leading-out fixed roller 2-32;

[0164] Two air bag extrusion parts are respectively arranged at the two ends of the swing rod 2-41 and extrude the outside of the leading fixed roller 2-21 and the leading-out fixed roller 2-32 respectively;

[0165] An air pump 2-43 is in communication with the two air bag extrusion parts through a gas distribution valve;

[0166] A swing arm 2-44 is connected to one end of the swing rod 2-41;

[0167] A first air cylinder 2-45 is rollingly clamped to the other end of the swing arm; the first air cylinder 2-45 is telescopic to drive the swing arm 2-44 and the swing rod 2-41 to rotate, so that the two air bag extrusion parts alternately extrude the leading fixed roller 2-21 and the leading-out fixed roller 2-32.

[0168] Through the swing of the swing rod 2-41, the leading fixed roller 2-21 and the leading-out fixed roller 2-32 are alternately fixed on the film strip 1-2.

[0169] In the embodiment, the air bag extrusion part comprises:

[0170] A connecting rod 2-421 is connected to one end of the swing rod 2-41;

[0171] A cover 2-422 is in a half-tube shape and is connected to the other end of the connecting rod 2-421; the cover 2-422 is hollow inside and is in communication with the gas distribution valve of the air pump 2-43;

[0172] A plurality of elastic air bags 2-423 are arranged inside the cover 2-422 and are in communication with the inside of the cover 2-422; the elastic air bags 2-423 are opposite to the film strip 1-2 on the leading fixed roller 2-21 or the leading-out fixed roller 2-32 and have a width greater than that of the film strip 1-2.

[0173] Through inflation of the elastic air bags 2-423, the elastic air bags 2-423 extrude the film strip 1-2 to make the film strip 1-2 and the fixed roller adhere to each other.

[0174] In the embodiment, the elastic air bags 2-423 are in a strip shape and the axis of the elastic air bags 2-423 is parallel to the axis of the corresponding leading-out fixed roller 2-32 or leading fixed roller 2-21.

[0175] This design makes the force direction of the film belt 1-2 consistent, thereby reducing the uneven waves on the film belt 1-2.

[0176] In this embodiment, the telescopic end of the first cylinder 2-45 is provided with a rolling clamping mechanism; the rolling clamping mechanism comprises:

[0177] The rectangular frame 2-461 is connected with the telescopic end of the first cylinder 2-45;

[0178] Two rotating rollers 2-462 are respectively and parallelly sleeved on the rectangular frame 2-461; the rocker arm 2-44 is rolled and clamped with the rotating rollers 2-462 through the gap between the two rotating rollers 2-462.

[0179] The rotating rollers 2-462 ensure smooth movement of the rocking.

[0180] In this embodiment, the end of the swing rod 2-41 is provided with a sleeve 2-411 with internal threads; one end of the rocker arm 2-44 is provided with external threads matched with the sleeve 2-411, and the swing rod 2-41 is threadedly connected with the rocker arm 2-44.

[0181] The sleeve 2-411 facilitates installation.

[0182] In this embodiment, the pulling mechanism comprises:

[0183] The crowbar 2-51 is hingedly connected at the upper portion;

[0184] The pulling roller 2-52 is connected with the lower end of the crowbar; the pulling roller 2-52 is opposite to the film belt 1-2 between the leading guide roller 2-22 and the leading guide roller 2-31;

[0185] The second cylinder 2-53 is arranged at the upper portion of the crowbar 2-51, and the second cylinder 2-53 drives the crowbar 2-51 to rotate when the second cylinder 2-53 is telescopically extended or retracted, so that the pulling roller 2-52 swings.

[0186] The crowbar 2-51 and the pulling roller 2-52 form an L shape, and the second cylinder 2-53 is located outside the one side end surface of the film belt 1-2.

[0187] As shown in the drawings, Figures 6-10 In this embodiment, the tensioning mechanism 3-4 located on the quantitative transfer mechanism 3-2 comprises:

[0188] The tensioning plate 3-41 is arranged on the moving end of the quantitative transfer mechanism 3-2;

[0189] Two tensioning smooth rails 3-42 are horizontally arranged on the tensioning plate 3-41; the axis of the tensioning smooth rail 3-42 is perpendicular to the length direction of the bearing platform 3-1;

[0190] A screw rod 3-43 is provided on the tensioning flat plate 3-41 and parallel to the tensioning flat rail 3-42, and has two thread parts 3-431 with opposite thread directions at two ends;

[0191] A servo motor 3-44 is provided on the tensioning flat plate 3-41 and connected with one end of the screw rod 3-43;

[0192] Two clamping mechanisms are respectively connected with the horizontal sliding rail and threadedly connected with the two thread parts 3-431 of the screw rod 3-43, and the clamping mechanisms are away from or close to each other under the forward rotation or reverse rotation of the servo motor 3-44.

[0193] The movement of the clamping mechanisms is realized by the displacement of the screw rod 3-43, and the two thread parts 3-431 with opposite directions are arranged in the screw rod 3-43 to realize the separation and close of the two clamping mechanisms, so as to horizontally pull apart the film strip 1-2.

[0194] In the embodiment, the servo motor 3-44 is coaxially arranged on the tensioning torsion spring 3-46 and connected with the end surface of the screw rod 3-43.

[0195] Since the film strip 1-2 has elasticity, and in order to avoid that the film strip 1-2 is excessively pulled apart, the tensioning torsion spring 3-46, i.e. a common torsion spring, is designed, so that the torsion force of the servo motor 3-44 can be accumulated and transmitted to the screw rod 3-43, so that the two clamping mechanisms on the screw rod 3-43 have a certain separation force, so as to ensure that the film strip 1-2 is tensioned and will not be broken.

[0196] In the embodiment, the clamping mechanism comprises:

[0197] A clamping jaw cylinder 3-451 is provided with a clamping sliding groove matched with the tensioning flat rail 3-42 and a threaded hole matched with the thread part 3-431 of the screw rod 3-43;

[0198] Two clamping plates 3-452 are respectively connected with two moving parts of the clamping jaw cylinder 3-451, the length direction of the clamping plate 3-452 is parallel to the length direction of the bearing platform 3-1, and the lower clamping surfaces of the two clamping plates 3-452 are flush with the surface of the bearing platform 3-1 under the control of the clamping jaw cylinder 3-451.

[0199] The clamping plate 3-452 can uniformly distribute the clamping force to a larger area, realize better tensioning effect, and reduce the waves formed due to uneven tensioning force.

[0200] In the embodiment, an end pressing mechanism is further included, and the end pressing mechanism comprises:

[0201] Two end pressing cylinders 3-47 are vertically arranged on the tensioning flat plate 3-41 and located at the front end of the tensioning flat rail 3-42.

[0202] End pressure plate 3-48, connected with the telescopic end of the two end pressure cylinders 3-47; the lower surface of the end pressure plate 3-48 is parallel to the upper surface of the bearing platform 3-1.

[0203] The end pressure mechanism further comprises:

[0204] Two pressure cylinders 3-49, arranged on the tensioning plate 3-41 and located directly below the end pressure plate 3-48;

[0205] Pressure plate 3-50, connected with the two pressure cylinders 3-49; the upper surface of the pressure plate 3-50 is parallel to the upper surface of the bearing platform 3-1; the width of the extrusion surface of the pressure plate 3-50 and the end pressure plate 3-48 is greater than the width of the film strip 1-2.

[0206] The rear tensioning mechanism can not be provided with the pressure cylinders 3-49 and the pressure plate 3-50, and the film strip 1-2 can be directly pressed on the bearing platform 3-1 by the end pressure cylinders 3-47 and the end pressure plate 3-48; or the bearing platform 3-1 can be disconnected at this position to provide space for the pressure cylinders 3-49 and the pressure plate 3-50.

[0207] The end portions of the film strip 1-2 can be fixed by the pressure plate 3-50 and the end pressure plate 3-48, so that the film strip 1-2 can be tensioned in the length direction by the rear tensioning control mechanism 3-3.

[0208] In this embodiment, a top pressure fixing device is further included, which is located upstream of the cutting area 3-11 on the bearing platform 3-1; the top pressure fixing device comprises:

[0209] Top pressure cylinder 3-61, arranged vertically downward;

[0210] Top pressure plate 3-62, connected with the telescopic end of the top pressure cylinder 3-61; the lower surface of the top pressure plate 3-62 is parallel to the upper surface of the bearing platform 3-1; the width of the top pressure plate 3-62 is greater than the width of the bearing platform 3-1.

[0211] After being cut, the film strip 1-2 at the rear of the cutting area 3-11 will deform and displace under the elastic force of the film strip 1-2 when the tensioning mechanism 3-4 on the quantitative conveying mechanism 3-2 pulls and fixes the end of the film strip 1-2, which will cause uneven stress and changes in the pressing area when the tensioning mechanism 3-4 on the quantitative conveying mechanism 3-2 grabs and fixes the film strip 1-2, resulting in waves in the film strip 1-2. The top pressure plate 3-62 can limit the film strip 1-2 to a certain extent before cutting, and the tensioning mechanism 3-4 on the quantitative conveying mechanism 3-2 can be released after clamping.

[0212] In this embodiment, the rear tension control mechanism 3-3 is a screw rod 3-43 translation structure; the servo motor 3-44 of the rear tension control mechanism 3-3 is also connected with the screw rod 3-43 through the rear tension torsion spring 3-31.

[0213] The force of the rear tension is accumulated through the torsion spring of the rear tension torsion spring 3-31, so as to apply the force to the film tape 1-2 in the longitudinal direction.

[0214] As shown in the figure, Figures 11-19 In this embodiment, the opposite sides of the notch 4-21 of the positioning plate 4-2 are provided with clamping grooves 4-211; the opposite sides of the pressing plate 4-4 are provided with clamping protrusions 4-41 corresponding to the clamping grooves 4-211.

[0215] The movement of the pressing plate 4-4 can be limited through the clamping grooves 4-211 and the clamping grooves 4-211, so as to ensure that the outer side surface of the pressing plate 4-4 and the outer side surface of the positioning plate 4-2 can be in the same horizontal plane.

[0216] In this embodiment, the pre-pressing mechanism includes two pre-pressing springs 4-31 which are vertically arranged, and the two pre-pressing springs 4-31 respectively connect the upper end surfaces of the pressing plate 4-4 and the cutting plate 4-5 with the telescopic end of the lifting mechanism.

[0217] In this embodiment, the two side end surfaces of the cutting plate 4-5 are provided with outward protruding ear plates 4-51; the position of the positioning plate 4-2 opposite to the ear plates 4-51 is provided with a strip-shaped hole 4-22.

[0218] The force-accumulating punch mechanisms are two, which are respectively arranged on the two sides of the positioning plate 4-2 and opposite to the two ear plates 4-51; the force-accumulating punch mechanism includes:

[0219] The rotating rod 4-61 is hingedly connected in the middle of the strip-shaped hole 4-22; the rotating plane of the rotating rod 4-61 is perpendicular to the plate surface of the positioning plate 4-2.

[0220] The force-accumulating spring 4-62 is arranged on the inner side of the positioning plate 4-2, one end of which is connected with the plate surface of the positioning plate 4-2, and the other end of which is connected with the tail of the rotating rod 4-61, so as to control the head of the rotating rod 4-61 to protrude out of the outer side surface of the positioning plate 4-2 and be located directly below the ear plate 4-51; under the elongation of the lifting mechanism, the ear plate 4-51 pushes the rotating rod 4-61 to rotate, so that the head of the rotating rod 4-61 is rotated into the strip-shaped hole 4-22.

[0221] Through the contact between the ear plate 4-51 and the rotating rod 4-61, the force-accumulating spring 4-62 accumulates force, and the movement of the ear plate 4-51 is limited, so that the pre-pressing spring 4-31 connected with the cutting plate 4-5 is squeezed to accumulate force.

[0222] In the embodiment, the inner side surface of the positioning plate 4-2 is provided with a support plate 4-23, and the force storage spring 4-62 is connected with the positioning plate 4-2 through the support plate 4-23.

[0223] The upper surface of the head of the rotating rod 4-61 is provided with a force storage groove 4-611 with a curved cross section, and the lower surface of the head of the rotating rod 4-61 is provided with an inclined guide surface 4-612, which forms an obtuse angle with the surface of the positioning plate 4-2; the lower surface and the inner side surface of the ear plate 4-51 are chamfered; and the upper surface and the inner side surface of the ear plate 4-51 are chamfered.

[0224] The force storage groove 4-611 can make the rotating rod 4-61 need more force to rotate, so that the force storage is more sufficient, and the guide surface 4-612 of the rotating rod 4-61 can make the ear plate 4-51 reset upward smoothly after the cutting plate 4-5 is cut.

[0225] In the embodiment, the side pressing mechanism includes at least two groups of side pressing assemblies, which are respectively arranged on the two sides of the cutting plate 4-5; the side pressing assembly includes:

[0226] The side pressing protrusion 4-71 is arranged on the cutting plate 4-5, and the outer end surface is an inclined surface inclined downward;

[0227] The elastic side pressing head is fixedly connected with the positioning plate 4-2; the inner end surface of the elastic side pressing head faces the side pressing protrusion 4-71; the inner end surface of the elastic side pressing head is inclined, and the inclination degree is the same as that of the outer end surface of the side pressing protrusion 4-71; when the lifting mechanism resets, a gap is left between the elastic side pressing head and the side pressing protrusion 4-71; when the lifting mechanism extends, the inner end surface of the elastic side pressing head and the outer end surface of the side pressing protrusion 4-71 slide and press.

[0228] In the embodiment, the elastic side pressing head includes:

[0229] The bottom sleeve 4-721 is in the shape of an open barrel, the opening faces the cutting plate 4-5, and the bottom sleeve 4-721 is fixedly connected with the positioning plate 4-2;

[0230] The pressing spring 4-722 is arranged in the bottom sleeve 4-721;

[0231] The side head 4-723 is sleeved in the bottom sleeve 4-721 and abuts against the pressing spring 4-722; and the exposed end surface of the side head 4-723 is provided with an inclined surface matched with the outer end surface of the side pressing protrusion 4-71.

[0232] Through the downward movement of the cutting plate 4-5, the side pressing protrusion 4-71 and the side head 4-723 are pressed against each other, so that the cutting plate 4-5 is forced to be closer to the positioning plate 4-2, and the gap of the cutting is smaller.

[0233] In this embodiment, the side pressure assembly is four, two a group of distribution in the two sides of the cutting plate 4-5.

[0234] In this embodiment, the lifting mechanism comprises:

[0235] The bottom plate 4-11 is connected to the cutting plate 4-5 and the pressing plate 4-4 through the pre-pressing mechanism.

[0236] The lifting cylinder 4-12 is vertically arranged and connected to the upper surface of the bottom plate 4-11.

[0237] The fixed plate 4-13 is fixedly connected to the bottom of the lifting cylinder 4-12.

[0238] The plurality of guide columns 4-14 are fixedly connected to the upper surface of the bottom plate 4-11 at the lower end and slidably connected to the fixed plate 4-13 at the upper end.

[0239] In this embodiment, the lower surface of the bottom plate 4-11 is provided with at least two limiting sliding grooves 4-111 which are vertically arranged on the outer surface of the positioning plate 4-2; the limiting sliding groove 4-111 is provided with a clamping sliding block 4-112; the sliding block is connected to the upper end surface of the cutting plate 4-5 through the pre-pressing spring 4-31.

[0240] The clamping sliding block 4-112 allows the cutting plate 4-5 to move relative to the surface of the positioning plate 4-2, so that the cutting plate 4-5 can be more closely attached to the positioning plate 4-2 when the side pressure protrusion 4-71 and the side head 4-723 are pressed against each other.

[0241] The mode gas meter film blanking system works as follows: after the film roll 1-1 is installed, the film belt 1-2 is pulled to sequentially wrap the traction mechanism, the feeding mechanism, and pass through the cutting mechanism.

[0242] Start the device, the traction mechanism starts to work, specifically: control the first cylinder 2-45 to shorten, make the swing rod 2-41 rotate clockwise, until the cover 2-422 is located on the outer surface of the lead-out fixed roller 2-32, start the air pump 2-43 to make the gas enter the elastic air bag 2-423 opposite to the lead-out fixed roller 2-32, the elastic air bag 2-423 expands and deforms to press and fix the film belt 1-2 on the lead-out fixed roller 2-32. At this time, start the second cylinder 2-53 to elongate, make the lever 2-51 rotate, force the pulling roller 2-52 to rise, apply force to the film belt 1-2 between the lead-out guide roller 2-31 and the lead-in guide roller, under the action of the force, the film roll 1-1 starts to rotate and unroll. When unrolling to a certain amount, control the second cylinder 2-53 to stop elongation.

[0243] At this time, the air pump 2-43 is closed, the elastic air bag 2-423 is retracted, and is separated from the diaphragm. The first air cylinder 2-45 is controlled to extend, so that the swing rod 2-41 rotates counterclockwise. The air pump 2-43 is started again, and the film tape 1-2 introduced on the fixed roller 2-21 is fixed in the same way.

[0244] Then, the feeding mechanism works, and the film tape 1-2 is pulled out. Specifically, the film tape 1-2 is located on the pressure plate 3-50 and the top plate 3-62 of the tensioning mechanism 3-4 of the quantitative transfer mechanism 3-2. The two tensioning mechanisms 3-4 are controlled to work, and the film tape 1-2 is tightly stretched at the side end, the head end and the tail end. Then, the top pressure cylinder 3-61 is controlled to extend, and the film tape 1-2 after the cutting area 3-11 is fixed.

[0245] Then, the cutting mechanism works. Specifically, the extension end of the lifting mechanism is controlled to extend. At this time, the two pre-pressing springs 4-31 are stressed, and the pressing plate 4-4 and the cutting plate 4-5 are moved downward. With the continuous extension of the lifting mechanism, the lower end of the pressing plate 4-4 first presses the diaphragm against the notch 4-21 groove, and the diaphragm is pressed and fixed at this time. The ear plate 4-51 is limited in moving downward, and the pre-pressing spring 4-31 connected with the cutting plate 4-5 is pressed. With the continuous extension of the lifting mechanism, when the force of the pre-pressing spring 4-31 on the cutting plate 4-5 is greater than the force of the ear plate 4-51 pushing the rotating rod 4-61, the rotating rod 4-61 is rotated, and the ear plate 4-51 passes through the force storage groove 4-611, and the force of the pre-pressing spring 4-31 is released instantaneously. The cutting plate 4-5 slides downward rapidly, and at the same time, the side pressing protrusion 4-71 on the cutting plate 4-5 is pressed against the side head 4-723, so that the cutting plate 4-5 is tightly attached to the positioning plate 4-2. In this way, the cutting plate 4-5 cuts the film tape 1-2 in the state of being tightly attached to the positioning plate 4-2. The whole process can cut the force enough, and the cutting gap is small, so as to ensure that the diaphragm of the sandwiched layer can be cut smoothly and completely.

[0246] After cutting, the feeding mechanism continues to work, specifically: other devices will move away the cut film, at the same time, control the forging cylinder, the pressure cylinder 3-49 to shorten, expand the gap between the pressure plate 3-50 and the end pressure plate 3-48, to ensure that the bearing platform 3-1 can pass through the gap smoothly. Then control the quantitative transfer mechanism 3-2 to move, so that the tensioning mechanism 3-4 on it reaches the end of the cut film 1-2, control the jaw cylinder 3-451 to clamp, clamp both ends of the film 1-2, then control the top pressure cylinder 3-61 to extend, contact the film 1-2, at the same time, control the tensioning mechanism 3-4 on the back tension control mechanism 3-3 to release the control of the film 1-2.

[0247] Control the quantitative transfer mechanism 3-2 to move, pull the film 1-2 forward, after pulling into position, control the end pressure cylinder 3-47 and the pressure cylinder 3-49 to extend, clamp and fix the end face of the film 1-2. At the same time, control the servo motor 3-44 on the quantitative transfer mechanism 3-2 to work, control the two jaw cylinders 3-451 to separate, tension the film. Similarly, the back tension control mechanism also operates to tension the film 1-2 on both sides, then controls the corresponding end pressure cylinder 3-47 and pressure cylinder 3-49 to work, fixes the back of the film 1-2, then controls the servo motor 3-44 of the back tension control mechanism 3-3 to work, slightly pulls the film 1-2 backward. Finally, control the top pressure cylinder 3-61 to extend, complete the preparation for re-cutting.

[0248] After cutting, the feeding mechanism continues to feed, at the same time, control the second cylinder 2-53 to shorten, the pull roller 2-52 falls under the action of gravity, so that the unwound film naturally falls off, just be pulled away by the cutting station, and place the film for re-stacking.

[0249] Repeat the above operations to realize the cycle operation of unwinding, feeding and cutting, and realize the discharging of the film.

[0250] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced equivalently without departing from the purpose and scope of the present application, which should be covered in the scope of the claims of the present application.

Claims

1. A diaphragm gas meter sub-skin blanking system, characterized in that, The application relates to a film cutting device. The device comprises: a film roll; a traction mechanism for unwinding the film from the film roll; a feeding mechanism arranged at the end of the traction mechanism, into which the film is fed after being pulled by the traction mechanism; a cutting mechanism arranged on the feeding mechanism to cut the film on the feeding mechanism; the traction mechanism comprises: an introduction mechanism arranged below the film roll; an export mechanism arranged below the introduction mechanism, through which the film unwound from the film roll passes in sequence; an alternating extrusion fixing mechanism arranged on one side of the introduction mechanism and the export mechanism to extrude and fix the film wound on the introduction mechanism and the export mechanism alternately; a pulling mechanism arranged between the introduction mechanism and the export mechanism, which pulls the film between the introduction mechanism and the export mechanism after the film is extruded and fixed on the export mechanism, so that the film roll is unwound; the feeding mechanism comprises: a support platform in the shape of a long strip, the upper surface of which is horizontal, and the width of the support platform is smaller than that of the film; a cutting area is arranged in the middle of the support platform; a quantitative transfer mechanism arranged at the head end of the support platform, the moving direction of the moving end of which is parallel to the length direction of the support platform; a rear tension control mechanism arranged at the rear end of the support platform, the moving direction of the moving end of which is parallel to the length direction of the support platform; the cutting area is arranged between the quantitative transfer mechanism and the rear tension control mechanism; two tensioning mechanisms arranged on the quantitative transfer mechanism and the rear tension control mechanism respectively; the tensioning mechanism on the quantitative transfer mechanism fixes and tensions the head end of the film; the tensioning mechanism on the rear tension control mechanism tensions the middle part of the film and fixes the film on the support platform; the cutting mechanism comprises: a lifting mechanism arranged vertically downward and above the cutting area of the support platform; a positioning plate arranged below the lifting mechanism; the upper end of the positioning plate is provided with a gap for the film to pass through; a pre-pressing mechanism connected with the telescopic end of the lifting mechanism; a pressing plate connected with the pre-pressing mechanism and located in the gap of the positioning plate, the lower end surface of the pressing plate is attached to the bottom surface of the gap of the positioning plate; the outer side surface of the pressing plate is parallel to the outer side surface of the positioning plate; when the telescopic end of the lifting mechanism continues to extend after the pressing plate interferes with the gap of the positioning plate, the lifting mechanism can continue to extend; a cutting plate horizontally and slidingly connected with the telescopic end of the lifting mechanism through the pre-pressing mechanism and located outside the positioning plate; the horizontal height of the lower end surface of the cutting plate is higher than that of the pressing plate after the lifting mechanism is shortened; a force storage stamping mechanism arranged on the positioning plate and interfering with the cutting plate; when the lifting mechanism is lowered, the cutting plate interferes with the force storage stamping mechanism until the lifting mechanism is extended beyond a predetermined value, and the force storage stamping mechanism releases the limitation on the cutting plate; 2. The diaphragm gas meter skin film blanking system of claim 1, wherein, a side pressing mechanism arranged on the positioning plate and applying a force to the cutting plate to extrude the cutting plate to the outside of the positioning plate when the lifting mechanism is extended. the introduction mechanism comprises: an introduction fixed roller arranged below the film roll; an introduction guide roller arranged below the introduction fixed roller and on the same side of the film roll; the alternating extrusion fixing mechanism is arranged on the back side of the guide roller to extrude and fix the film on the introduction fixed roller; the export mechanism comprises: an export guide roller arranged below the introduction fixed roller. The leading-out fixed roller is located below the leading-out guide roller and is opposite to the direction of the film roll; the alternate extrusion fixed mechanism is located on one side of the leading-out fixed roller and extrudes and fixes the film strip on the leading-out fixed roller; The pulling mechanism comprises: A pry bar is hingedly connected at the upper portion; A pulling roller is connected to the lower end of the pry bar; the pulling roller is opposite to the film strip between the leading-in guide roller and the leading-out guide roller; A second air cylinder is arranged at the upper portion of the pry bar; when the second air cylinder is extended or retracted, the pry bar is rotated to swing the pulling roller; The pry bar and the pulling roller are in L shape; the second air cylinder is located outside the end surface of the film strip.

3. The diaphragm gas meter skin film blanking system of claim 1, wherein, The alternate extrusion fixed mechanism comprises: A swing lever is rotationally connected at the middle portion and is located outside the leading-in fixed roller and the leading-out fixed roller at both ends; the hinge of the swing lever is located on the perpendicular line of the connection between the leading-in fixed roller and the leading-out fixed roller; Two air bag extrusion members are arranged at both ends of the swing lever and are opposite to the outside of the leading-in fixed roller and the leading-out fixed roller, respectively; An air pump with a gas distribution valve is in communication with the two air bag extrusion members; A swing arm is connected at one end of the swing lever; A first air cylinder is rollingly clamped at the other end of the swing arm; when the first air cylinder is extended or retracted, the swing arm and the swing lever are rotated to make the two air bag extrusion members alternately extrude the leading-in fixed roller and the leading-out fixed roller; The air bag extrusion member comprises: A connecting rod is connected at one end of the swing lever; A cover is in half-pipe shape and is connected at the other end of the connecting rod; the cover is hollow inside; the inside of the cover is in communication with the gas distribution valve of the air pump; A plurality of elastic air bags are arranged inside the cover and are in communication with the inside of the cover; the elastic air bags are opposite to the film strip on the leading-in fixed roller or the leading-out fixed roller and have a width greater than that of the film strip; The elastic air bags are in strip shape; the axis of the elastic air bag is parallel to the axis of the corresponding leading-out fixed roller or leading-in fixed roller; The extended or retracted end of the first air cylinder is provided with a roll clamping mechanism; the roll clamping mechanism comprises: A rectangular frame is connected to the extended or retracted end of the first air cylinder; Two rotating rollers are parallel and arranged in parallel outside the rectangular frame; the swing arm is rollingly clamped with the rotating rollers through the gap between the two rotating rollers; The end of the swing lever is provided with a sleeve with internal threads; one end of the swing arm is provided with external threads matched with the sleeve; the swing lever and the swing arm are threadedly connected.

4. The diaphragm gas meter skiving system of claim 1, wherein, The tensioning mechanism located on the quantitative transfer mechanism comprises: A tensioning plate is arranged on the moving end of the quantitative transfer mechanism; At least one tensioning rail is horizontally arranged on the tensioning plate; the axis of the tensioning rail is perpendicular to the length direction of the bearing platform; A lead screw is provided with thread parts at both ends and has opposite thread directions; the lead screw is parallel to the tensioning rail and is arranged on the tensioning plate; A servo motor is arranged on the tensioning plate and is connected to one end of the lead screw; Two clamping mechanisms are respectively connected to the horizontal slide rail and are threadedly connected to the two thread parts of the lead screw; the clamping mechanisms are away from or close to each other under the forward rotation or reverse rotation of the servo motor; The servo motor is coaxially arranged on the tensioning spring and is connected to the end surface of the lead screw.

5. The diaphragm gas meter skin film blanking system of claim 4, wherein, The clamping mechanism comprises: A clamping cylinder is provided with a clamping slide groove matched with the tensioning rail and a threaded hole matched with the thread part of the lead screw. Two clamping plates are respectively connected with two moving parts of the clamping jaw cylinder; the length direction of the clamping plates is parallel to the length direction of the bearing platform; the lower clamping surfaces of the two clamping plates are flush with the surface of the bearing platform under the control of the clamping jaw cylinder; The end pressing mechanism comprises two end pressing cylinders which are vertically upward arranged on the tensioning plate and located at the front end of the tensioning rail; an end pressing plate is connected with the extension ends of the two end pressing cylinders; the lower surface of the end pressing plate is parallel to the upper surface of the bearing platform; two pressure receiving cylinders are arranged on the tensioning plate and located directly below the end pressing plate; a pressure receiving plate is connected with the two pressure receiving cylinders; the upper plate surface of the pressure receiving plate is parallel to the upper surface of the bearing platform; the extrusion surfaces of the pressure receiving plate and the end pressing plate have a width greater than the width of the film strip; the bearing platform is provided with a notch in the area corresponding to the pressure receiving cylinder and the pressure receiving plate on the rear tensioning control mechanism for displacement of the pressure receiving cylinder and the pressure receiving plate; The top pressing fixing device is located upstream of the cutting area on the bearing platform; the top pressing fixing device comprises: A top pressing cylinder is vertically downward arranged; A top pressing plate is connected with the extension end of the top pressing cylinder; the lower plate surface of the top pressing plate is parallel to the upper surface of the bearing platform; the width of the top pressing plate is greater than the width of the bearing platform.

6. The diaphragm gas meter skin film blanking system of claim 4, wherein, The rear tensioning control mechanism is a screw translation structure; the servo motor of the rear tensioning control mechanism is also connected with the screw rod through the rear tensioning torsion spring.

7. The diaphragm gas meter skin film blanking system of claim 1, wherein, Opposite sides of the notch of the positioning plate are provided with clamping grooves; opposite sides of the pressing plate are provided with clamping protrusions corresponding to the clamping grooves; The pre-pressing mechanism comprises two vertically arranged pre-pressing springs; the two pre-pressing springs respectively connect the upper end surfaces of the pressing plate and the cutting plate with the extension ends of the lifting mechanism.

8. The diaphragm gas meter skin film blanking system of claim 7, wherein, The two side end surfaces of the cutting plate are provided with outward protruding ear plates; the positioning plate is provided with a strip-shaped hole opposite the ear plates; The two force storage stamping mechanisms are respectively arranged on the two sides of the positioning plate and opposite the two ear plates; the force storage stamping mechanism comprises: A rotating rod is hingedly connected in the middle of the strip-shaped hole; the rotating plane of the rotating rod is perpendicular to the plate surface of the positioning plate; A force storage spring is arranged on the inner side of the positioning plate; one end of the force storage spring is connected with the plate surface of the positioning plate; the other end of the force storage spring is connected with the tail of the rotating rod; the head of the rotating rod is controlled to extend out of the outer side of the positioning plate and located directly below the ear plate; under the extension of the lifting mechanism, the ear plate pushes the rotating rod to rotate so that the head of the rotating rod turns into the strip-shaped hole; The inner side of the positioning plate is provided with a support plate; the force storage spring is connected with the positioning plate through the support plate; The upper surface of the head of the rotating rod is provided with a force storage groove with a curved cross section; the lower surface of the head of the rotating rod is provided with an inclined guide surface; the guide surface forms an obtuse angle with the plate surface of the positioning plate; the lower surface and the inner side of the ear plate are rounded; the upper surface and the inner side of the ear plate are rounded.

9. The diaphragm gas meter skin film blanking system of claim 7, wherein, The side pressing mechanism comprises at least two groups of side pressing assemblies which are respectively arranged on the two sides of the cutting plate; the side pressing assembly comprises: A side pressing protrusion is arranged on the cutting plate; the outer end surface is an inclined surface which is inclined downward; The elastic side pressure head is fixed to the positioning plate; the inner end surface of the elastic side pressure head is opposite to the side pressure convex; the inner end surface of the elastic side pressure head is inclined, and the inclination of the inner end surface of the elastic side pressure head is the same as that of the outer end surface of the side pressure convex; when the lifting mechanism is reset, a gap is left between the elastic side pressure head and the side pressure convex; when the lifting mechanism is elongated, the inner end surface of the elastic side pressure head is slidingly pressed against the outer end surface of the side pressure convex; The elastic side pressure head comprises: The bottom sleeve is in the shape of an open barrel, and the opening is opposite to the cutting plate and is fixed to the positioning plate; The pressing spring is arranged in the bottom sleeve; The side head is sleeved in the bottom sleeve and is opposite to the pressing spring; the exposed end surface of the side head is provided with an inclined surface matched with the outer end surface of the side pressure convex.

10. The diaphragm gas meter skin film blanking system of claim 7, wherein, The lifting mechanism comprises: The bottom plate is connected to the cutting plate and the pressing plate through the pre-pressing mechanism on the lower surface; The lifting cylinder is vertically arranged and is connected to the upper surface of the bottom plate on the telescopic end; The fixed plate is fixed to the bottom of the lifting cylinder on the lower surface; The guide columns are fixed to the upper surface of the bottom plate on the lower end and are slidingly connected to the fixed plate on the upper end; The lower surface of the bottom plate is provided with at least two limiting sliding grooves which are perpendicular to the outer surface of the positioning plate; the limiting sliding grooves are provided with clamping sliding blocks; the sliding blocks are connected to the upper end surface of the cutting plate through the pre-pressing spring.

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