A combined cross-cutting method for oblique-jointed silicon steel sheets and its modular cross-cutting system

Abstract

The present invention discloses a combined cross-cutting method for bevel-jointed silicon steel sheets and a modular cross-cutting system thereof. The modular cross-cutting system is used to produce bevel-jointed silicon steel sheets; the method includes cross-cutting various types of bevel-jointed silicon steel sheets through a cross-cutting mechanism; the method mainly utilizes a free combination of a self-locking double-head punching module and a rotary single-blade punching module to process the material, thereby realizing cross-cutting of various types of said bevel-jointed silicon steel sheets. After cross-cutting, the various types of bevel-jointed silicon steel sheets are collected and sorted using an automatic sorting and collating mechanism. The present invention processes the material through a free combination of a self-locking double-head punching module and a rotary single-blade punching module, thereby realizing cross-cutting of various types of said bevel-jointed silicon steel sheets.

Description

Technical Field

[0001] The invention relates to the technical field of cross-cutting of silicon steel sheets with oblique seams, in particular to a combined cross-cutting method for silicon steel sheets with oblique seams and a modular cross-cutting system thereof. Background Art

[0002] At present, most of the lamination production of large transformer cores is carried out using bevel-jointed silicon steel sheets. Due to the complex structure of bevel-jointed silicon steel sheets and the fact that there are multiple structural types of silicon steel sheets used to assemble the same core, a separate dedicated production line needs to be designed for each type of silicon steel sheet. The equipment specifications and functional models vary, which is not conducive to the systematic management of the equipment. Since the functions of the production lines vary, the transfer of production line functions cannot be achieved. For silicon steel sheet types with increased supply demand, additional equipment needs to be purchased to increase production capacity, making it difficult to achieve rational scheduling and management of production demand. Summary of the Invention

[0003] Purpose of the invention: In order to overcome the deficiencies in the prior art, the present invention provides a combined cross-cutting method for bevel-jointed silicon steel sheets and a modular cross-cutting system thereof, which processes the material through the free combination of a self-locking double-head punching module and a rotary single-blade punching module, thereby realizing cross-cutting processing of various types of bevel-jointed silicon steel sheets.

[0004] Technical Solution: To achieve the above-mentioned purpose, the present invention provides a combined cross-cutting method for bevel-jointed silicon steel sheets and a modular cross-cutting system thereof, wherein the modular cross-cutting system is used to produce bevel-jointed silicon steel sheets; the cross-cutting mechanism is used to perform cross-cutting of type I, II, and III bevel-jointed silicon steel sheets; the material is processed mainly by freely combining a self-locking double-head punching module and a rotary single-blade punching module, thereby realizing cross-cutting of various types of bevel-jointed silicon steel sheets;

[0005] S1. For cross-cutting of Type I bevel-jointed silicon steel sheets: Station A utilizes a self-locking double-head punching module, and station B utilizes a rotary single-blade punching module. Stations A and B perform simultaneous punching. The self-locking double-head punching module alternately locks one of the two punches between adjacent punching gaps, while the rotary single-blade punching module reciprocates the punching tool within the adjacent punching gaps to a specified punching angle. The self-locking double-head punching module locks the punch closer to the punching tool during each punching.

[0006] S2. Type II bevel seam silicon steel sheet cross-cutting: Stations A and B both use self-locking double-head punching modules, with both punches locked during each punching operation.

[0007] S3. Type III bevel seam silicon steel sheet cross-cutting: Both stations A and B utilize a rotary single-blade punching module, with simultaneous punching. The punching tool of the rotary single-blade punching module maintains the same punching angle for each punching.

[0008] After the cross-cutting processing, the type I, II and III oblique seam silicon steel sheets are all collected and sorted by an automatic sorting and sorting mechanism.

[0009] Furthermore, the I, II and III type oblique seam silicon steel sheets are spliced together to form an iron core.

[0010] Furthermore, multiple guide rollers are telescopically adjusted to form a guide roller group with the same inclination as the end cutting edge of the bevel seam silicon steel sheet. The end cutting edge of the bevel seam silicon steel sheet is fitted against the guide roller group and slides, so that the bevel seam silicon steel sheets with the same inclination cutting edge move to the same side, thereby realizing automatic classification and sorting of the sheets.

[0011] Furthermore, it includes a cross-cutting mechanism, which includes a base, and the upper end surface of the base is provided with a lower mold assembly corresponding to the A and B stations; the cross-cutting mechanism also includes an upper template, and the upper template is provided with a stamping module corresponding to the A and B stations; a feed roller is provided in front of the A and B stations, and a discharging roller is provided behind the A and B stations, and the tail end of the discharging roller is provided with the automatic sorting and sorting mechanism.

[0012] Furthermore, the stamping module includes a self-locking double-head stamping module and a rotary single-blade stamping module. The stamping modules each include a mounting plate fixedly connected to the upper template, and a plurality of stamping guide columns slidingly engaged with the lower mold assembly. The stamping guide columns are adjustable relative to the mounting plate; and also include a clamping assembly, which is elastically connected relative to the mounting plate.

[0013] Furthermore, the self-locking double-head stamping module includes a punch, which is elastically connected to the bottom surface of the mounting plate, and a guide rod that slides with the mounting plate is provided on the punch, and a self-locking structure is provided on the upper end of the guide rod; the self-locking structure includes a sleeve that slides with the end of the guide rod, a notch is provided on one side of the sleeve, and an embedding groove corresponding to the notch is provided on the guide rod, and a card block is provided through the notch and embedded in the embedding groove, and the card block is driven by a power system to be telescopically arranged with the embedding groove.

[0014] Furthermore, the rotary single-blade punching module includes a punching tool, which is driven to rotate back and forth by a power system, and the punching tool is rotationally limited by the clamping assembly.

[0015] Furthermore, the lower die assembly includes a reference block that is slidably engaged with the stamping guide column and an adjustable support limit block, and the reference block is aligned with the clamping assembly in the upper and lower directions.

[0016] Furthermore, the automatic sorting and arranging mechanism includes a deflection roller group arranged at the tail end of the discharge roller, and auxiliary guide plates located on both sides of the discharge roller, and the bottom ends of the auxiliary guide plates on both sides are provided with an adjustable film collection frame.

[0017] Furthermore, the adjustable film receiving rack includes a plurality of support plates arranged in parallel with each other, and the plurality of support plates are arranged parallel to the auxiliary guide plate, and the plurality of support plates are vertically fixedly connected to the baffle plate, and the adjustable film receiving rack is telescopically arranged in a direction perpendicular to the surface of the auxiliary guide plate.

[0018] Beneficial effects: The combined cross-cutting method for bevel-jointed silicon steel sheets and the modular cross-cutting system thereof of the present invention have at least the following advantages:

[0019] (1) The combined cross-cutting method can meet the cross-cutting production of various types of silicon steel sheets and meet the supply demand for all types of silicon steel sheets for a certain iron core production.

[0020] (2) The modular punching structure can quickly realize the transformation of production line functions by replacing modules, respond to product supply and demand, effectively improve production capacity, and maximize the utilization of productivity.

[0021] (3) The same model of equipment can produce various types of products, which is convenient for repair, maintenance and management. It can also achieve multiple uses of one machine and reduce equipment maintenance and procurement costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Attachment Figure 1 This is a block diagram of the combined cross-cutting method for oblique-jointed silicon steel sheets of this scheme;

[0023] Attachment Figure 2 It is the overall structural diagram of the modular cross-cutting system;

[0024] Attachment Figure 3 This is a schematic diagram of the front section of the processing surface structure of the type I oblique seam silicon steel sheet;

[0025] Attachment Figure 4 This is a schematic diagram of the rear section of the processing surface structure of the type I oblique seam silicon steel sheet;

[0026] Attachment Figure 5 It is a structural diagram of the self-locking double-head stamping module;

[0027] Attachment Figure 6 It is a structural diagram of the self-locking structure;

[0028] Attachment Figure 7 It is a structural diagram of a rotary single-blade punching module;

[0029] Attachment Figure 8This is a structural diagram of the A and B stations for processing type I oblique seam silicon steel sheets;

[0030] Attachment Figure 9 Schematic diagram of the structure of the lower mold assembly;

[0031] Attachment Figure 10 A schematic diagram of the structure for adjusting the film collection rack;

[0032] Attachment Figure 11 This is a structural diagram of an embodiment of an iron core formed by splicing type I, II, and III oblique-jointed silicon steel sheets. DETAILED DESCRIPTION

[0033] The present invention will be further described below with reference to the accompanying drawings.

[0034] As attached Figure 1-11 The method for combined cross-cutting of bevel-jointed silicon steel sheets and its modular cross-cutting system are described. The modular cross-cutting system is used to produce bevel-jointed silicon steel sheets 3. The method includes cross-cutting of types I, II, and III bevel-jointed silicon steel sheets by a cross-cutting mechanism 4. The method mainly utilizes a self-locking double-head punching module 1 and a rotary single-blade punching module 2 to freely combine and process the material 3-1, thereby realizing cross-cutting of various types of bevel-jointed silicon steel sheets 3.

[0035] The modular cross-cutting system includes a cross-cutting mechanism 4, which includes a base 4-1. The upper end surface of the base 4-1 is provided with a lower die assembly 6 corresponding to the A and B stations; the cross-cutting mechanism 4 also includes an upper template 4-2, and the upper template 4-2 is provided with a stamping module 7 corresponding to the A and B stations; a feed roller 4-3 is provided in front of the A and B stations, and a discharge roller 4-4 is provided behind the A and B stations. The tail end of the discharge roller 4-4 is provided with the automatic sorting and sorting mechanism 5;

[0036] The material is fed in through the feed roller, and passes through the A and B stations to complete the cross-cutting operation. The produced oblique seam silicon steel sheets are sent to the automatic sorting and collating mechanism by the discharge roller, and the automatic sorting and collating mechanism automatically realizes the sorting and collating of the silicon steel sheets.

[0037] The punching module 7 includes a self-locking double-head punching module 1 and a rotary single-blade punching module 2. The punching module 7 includes a mounting plate 7-1 fixedly connected to the upper mold plate 4-2, and a plurality of punching guide columns 7-2 slidingly matched with the lower mold assembly 6; and also includes a clamping assembly 7-3, which is elastically connected to the mounting plate 7-1.

[0038] Setting up the stamping guide column can avoid the deviation of the stamping direction, and the clamping component can clamp the material to avoid the position deviation of the material, ultimately ensuring the stamping accuracy.

[0039] The self-locking double-head punching module 1 includes a punch 10, each of which is elastically connected to the bottom surface of the mounting plate 7-1. The punch 10 is provided with a guide rod 10-1 that slides with the mounting plate 7-1, and a self-locking structure 12 is provided on the upper end of the guide rod 10-1; the self-locking structure 12 includes a sleeve 12-1 that slides with the end of the guide rod 10-1, a notch 12-3 is formed on one side of the sleeve 12-1, and an embedding groove 12-2 corresponding to the notch 12-3 is provided on the guide rod 10-1, and a clamping block 12-4 is provided through the notch 12-3 and is embedded in the embedding groove 12-2. The clamping block 12-4 is driven by a power system to be telescopically arranged with the embedding groove 12-2;

[0040] As a preferred embodiment, the clamping block can be driven by a cylinder to cooperate with the embedding groove. After the clamping block is embedded in the embedding groove, the punch can be locked relative to the mounting plate. The locked punch can be used for punching operations, while the unlocked punch has the same effect as the clamping component.

[0041] The rotary single-blade punching module 2 includes a punching tool 11, which is driven to rotate back and forth by a power system, and the punching tool 11 is rotationally limited by the clamping assembly 7-3.

[0042] The lower die assembly 6 includes a reference block 6-1 that slides with the stamping guide column 7-2 and an adjustable support limit block 6-2. The reference block 6-1 is aligned with the clamping assembly 7-3 up and down; the stamping guide column 7-2 is adjustable relative to the mounting plate 7-1, and the mounting plate 7-1 is provided with an adjustment slot 7-4 for sliding adjustment of the stamping guide column 7-2.

[0043] Among them, the reference block serves as a reference for punching to ensure neat cutting seams; when replacing the punching module, due to the structural differences between the self-locking double-head punching module and the rotary single-blade punching module, it is necessary to adjust the spacing between the two reference blocks of the lower die assembly to ensure that normal punching operations can be completed. The punching guide column 7-2 is adjustable relative to the mounting plate 7-1, which can facilitate the installation of the module relative to the lower die assembly when replacing the punching module.

[0044] In addition, when corresponding to the self-locking double-head punching module, the adjustable support limit block plays the role of alternately supporting the bottom of the material. Specifically, when punching, the adjustment support limit block on the locking punch side is away from the reference block, and the adjustment support limit block on the unlocked punch side extends to the bottom of the unlocked punch to play a supporting role to avoid damage to the material; and when corresponding to the rotary single-blade punching module, the adjustable support limit block is used together with the reference block to limit the punching direction of the punching tool.

[0045] As a preferred embodiment, the said type I, II, and III oblique seam silicon steel sheets are spliced together to form an iron core, that is, the various types of oblique seam silicon steel sheets produced just meet the lamination manufacturing requirements for transformer iron cores, and can realize the systematic equipment and unified silicon steel sheet production, for example, for the production of silicon steel sheets with oblique seams spliced in the shape of a Japanese character;

[0046] As attached Figure 11 As shown, type II oblique seam silicon steel sheets can correspond to the silicon steel sheets required for the center column of the iron core, type I oblique seam silicon steel sheets correspond to the silicon steel sheets required for the long sides spliced with both ends of the center column of the iron core, and type III oblique seam silicon steel sheets correspond to the silicon steel sheets required for the short sides spliced around the long sides.

[0047] S1. Cross-cutting of Type I Bevel-Jointed Silicon Steel Sheets: Station A utilizes a self-locking double-head punching module 1, and station B utilizes a rotary single-blade punching module 2. Stations A and B perform simultaneous punching. The self-locking double-head punching module 1 alternately locks one of the two punches 10 between adjacent punching gaps, while the rotary single-blade punching module 2 reciprocates the punching tool within the adjacent punching gaps to a specified punching angle. The self-locking double-head punching module 1 locks the punching tool 11 toward the nearer punch 10 during each punching operation.

[0048] As attached Figure 3 As shown, the concave interface between the middle of the type I bevel seam silicon steel sheet and the end of the type II bevel seam silicon steel sheet is punched by a self-locking double-head punching module, and the bevel edge between the end of the type I bevel seam silicon steel sheet and the type III bevel seam silicon steel sheet is punched by a rotary single-knife punching module, wherein the punch is arranged according to the structural shape of the concave interface in the middle of the type I bevel seam silicon steel sheet, two punches are symmetrically arranged, and one of the punches is locked during each punching process, that is, only one of the punches is used for punching each time, and the two punches are used alternately, and at the same time, the punching tool of the rotary single-knife punching module is rotated and adjusted to a position that meets the punching angle of the bevel edge for punching, and punching is performed once with the length of a single type I bevel seam silicon steel sheet as the feed amount, and type I bevel seam silicon steel sheets can be continuously produced by this reciprocating process;

[0049] S2. II type bevel seam silicon steel sheet cross-cutting processing: A, B stations are equipped with a self-locking double-head punching module 1, A, B stations punching synchronously; the two punches 10 of the self-locking double-head punching module 1 are locked each time punching;

[0050] As attached Figure 11As shown, Type II bevel joint silicon steel sheets are different from Type I bevel joint silicon steel sheets. The cutting edges at both ends are angled cutting structures. However, since the cutting edges correspond to the shape of the concave interface structure in the middle of Type I bevel joint silicon steel sheets, the double punches can be locked at the same time through the self-locking double-head punching module to achieve synchronous punching of the double punches. The length of two Type II bevel joint silicon steel sheets is used as the feed amount for punching once, and Type II bevel joint silicon steel sheets can be continuously produced by this reciprocating process.

[0051] S3.Ⅲ type bevel seam silicon steel sheet cross-cutting processing: A, B stations are using a rotary single-knife punching module 2, A, B stations synchronous punching; the rotary single-knife punching module 2 punching tool 11 each punching maintains the same punching angle;

[0052] Similarly, according to the attached Figure 11 The shown type III bevel joint silicon steel sheet structure omits the punching of the middle concave interface compared to the type I bevel joint silicon steel sheet, and can be punched using two rotary single-blade punching modules. By locking the punching tool angle and setting the bevel edge angles at both ends of the type III bevel joint silicon steel sheet, punching is performed once with the length of the two type III bevel joint silicon steel sheets as the feed amount, and type III bevel joint silicon steel sheets can be continuously produced by this reciprocating process.

[0053] The processing method described above can save materials to a great extent, but the processed silicon steel sheets have alternating directions. Therefore, the automatic sorting and collating mechanism 5 is required to collect and sort the type I, II, and III bevel seam silicon steel sheets after cross-cutting.

[0054] The silicon steel sheet cross-cutting processing method of this scheme can meet the cross-cutting production of all types of silicon steel sheets required for iron core production, realize systematic management and production, and the products can be sold in sets to the greatest extent possible, effectively guaranteeing production efficiency. In addition, the production flexibility is high, and the production line production target can be quickly changed by simply replacing the module. When the demand for a certain type of silicon steel sheet increases, the production line can be quickly scheduled to maximize the utilization of productivity.

[0055] The automatic sorting and arranging mechanism 5 includes a deflecting roller group 8 arranged at the tail end of the discharging roller 4-4, and auxiliary guide plates 5-1 located on both sides of the discharging roller 4-4, and the bottom ends of the auxiliary guide plates 5-1 on both sides are provided with an adjustment sheet receiving frame 9; a plurality of guide rollers 8-1 are telescopically adjusted to form a deflecting roller group 8 with the same inclination as the end cutting edge of the bevel seam silicon steel sheet, and the end cutting edge of the bevel seam silicon steel sheet is fitted on the deflecting roller group 8 and slides, so that the bevel seam silicon steel sheets with the same inclination cutting edge move to the same side, thereby realizing automatic sorting and arranging of sheets, facilitating subsequent sorting and packaging, and further improving production efficiency.

[0056] The adjustable film receiving frame 9 includes a plurality of support plates 9-1 arranged in parallel with each other, and the plurality of support plates 9-1 are arranged parallel to the auxiliary guide plate 5-1. The plurality of support plates 9-1 are vertically fixedly connected to the baffle 9-2. The adjustable film receiving frame 9 is arranged to be telescopic in a direction perpendicular to the surface of the auxiliary guide plate 5-1.

[0057] The relative height of the film collection rack can be automatically adjusted according to the film collection stacking height to ensure neat film collection. By setting up multiple support plates, when one of the support plates is collecting films, the packer can pack the material stacks on the remaining support plates, which is extremely convenient and safe.

[0058] The above description is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the above principles of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A combined cross-cutting method for oblique seam silicon steel sheets, characterized in that: The production of bevel-jointed silicon steel sheets (3) is carried out through a modular cross-cutting system; the cross-cutting process of type I, II, and III bevel-jointed silicon steel sheets is carried out through a cross-cutting mechanism (4); the material (3-1) is processed by freely combining a self-locking double-head punching module (1) and a rotary single-blade punching module (2), thereby realizing cross-cutting of various types of the bevel-jointed silicon steel sheets (3); S1. Type I oblique seam silicon steel sheet cross-cutting processing: A station adopts a self-locking double-head punching module (1), and B station adopts a rotary single-blade punching module (2), and A and B stations punch synchronously; the self-locking double-head punching module (1) alternately locks any one of the two punches (10) in adjacent punching gaps, and the rotary single-blade punching module (2) reciprocates the punching tool (11) in the adjacent punching gaps to a specified punching angle; the self-locking double-head punching module (1) locks the punching tool (11) toward the punch (10) on the closer side each time punching; S2. II type oblique seam silicon steel sheet cross-cutting processing: A and B stations both use a self-locking double-head punching module (1), and A and B stations punch synchronously; the two punches (10) of the self-locking double-head punching module (1) are locked each time punching; S3. Type III oblique seam silicon steel sheet cross-cutting processing: A and B stations both use a rotary single-blade punching module (2), and A and B stations punch synchronously; the punching tool (11) of the rotary single-blade punching module (2) maintains the same punching angle each time punching; After the cross-cutting processing, the type I, II and III oblique seam silicon steel sheets are all collected and sorted by an automatic sorting and sorting mechanism (5).

2. The combined cross-cutting method for bevel-jointed silicon steel sheets according to claim 1, characterized in that: The I, II and III type oblique seam silicon steel sheets are spliced and stacked to form an iron core.

3. The combined cross-cutting method for bevel-jointed silicon steel sheets according to claim 1, characterized in that: A plurality of guide rollers (8-1) are telescopically adjusted to form a deflection roller group (8) having the same inclination as the end cutting edge of the bevel-jointed silicon steel sheet. The end cutting edge of the bevel-jointed silicon steel sheet is fitted on the deflection roller group (8) and slides, so that the bevel-jointed silicon steel sheets with the same inclination cutting edge move to the same side, thereby realizing automatic classification and collection.

4. The modular cross-cutting system in the combined cross-cutting method for bevel-jointed silicon steel sheets according to any one of claims 1 to 3, characterized in that: The invention comprises a cross-cutting mechanism (4), wherein the cross-cutting mechanism (4) comprises a base (4-1), and the upper end surface of the base (4-1) is provided with a lower die assembly (6) corresponding to the A and B stations; the cross-cutting mechanism (4) also comprises an upper template (4-2), and the upper template (4-2) is provided with a punching module (7) corresponding to the A and B stations; a feed roller (4-3) is provided in front of the A and B stations, and a discharge roller (4-4) is provided behind the A and B stations, and the tail end of the discharge roller (4-4) is provided with the automatic sorting and sorting mechanism (5).

5. The modular cross-cutting system in the combined cross-cutting method for bevel-jointed silicon steel sheets according to claim 4, characterized in that: The punching module (7) includes a self-locking double-head punching module (1) and a rotary single-blade punching module (2). The punching module (7) includes a mounting plate (7-1) fixedly connected to the upper mold plate (4-2), and a plurality of punching guide columns (7-2) slidingly matched with the lower mold assembly (6). The punching guide columns (7-2) are adjustable relative to the mounting plate (7-1); and also includes a clamping assembly (7-3), which is elastically connected relative to the mounting plate (7-1).

6. The modular cross-cutting system in the combined cross-cutting method for bevel-jointed silicon steel sheets according to claim 5, characterized in that: The self-locking double-head punching module (1) includes a punch (10), and the punches (10) are elastically connected to the bottom surface of the mounting plate (7-1). The punch (10) is provided with a guide rod (10-1) that is slidably matched with the mounting plate (7-1), and the upper end of the guide rod (10-1) is provided with a self-locking structure (12); the self-locking structure (12) includes a sleeve (12-1) that is slidably matched with the end of the guide rod (10-1), a notch (12-3) is provided on one side of the sleeve (12-1), and an embedding groove (12-2) corresponding to the notch (12-3) is provided on the guide rod (10-1), and a clamping block (12-4) is provided through the notch (12-3) and is embedded in the embedding groove (12-2), and the clamping block (12-4) is driven by a power system to be telescopically arranged with the embedding groove (12-2).

7. The modular cross-cutting system in the combined cross-cutting method for bevel-jointed silicon steel sheets according to claim 6, characterized in that: The rotary single-blade punching module (2) comprises a punching tool (11), the punching tool (11) is driven to rotate back and forth by a power system, and the punching tool (11) is rotationally limited by the pressing assembly (7-3).

8. The modular cross-cutting system in the combined cross-cutting method for bevel-jointed silicon steel sheets according to claim 7, characterized in that: The lower die assembly (6) comprises a reference block (6-1) that is slidably matched with the punching guide column (7-2) and an adjustable support limit block (6-2); the reference block (6-1) and the pressing assembly (7-3) are aligned vertically.

9. The modular cross-cutting system in the combined cross-cutting method for bevel-jointed silicon steel sheets according to claim 4, characterized in that: The automatic sorting and arranging mechanism (5) comprises a deflecting roller group (8) arranged at the tail end of the discharge roller (4-4), and auxiliary guide plates (5-1) located on both sides of the discharge roller (4-4), and the bottom ends of the auxiliary guide plates (5-1) on both sides are provided with an adjusting film receiving frame (9).

10. The modular cross-cutting system in the combined cross-cutting method for bevel-jointed silicon steel sheets according to claim 9, characterized in that: The adjustable film receiving frame (9) comprises a plurality of support plates (9-1) arranged in parallel with each other, the plurality of support plates (9-1) are all arranged in parallel with the auxiliary guide plate (5-1), the plurality of support plates (9-1) are all vertically fixedly connected to the baffle plate (9-2), and the adjustable film receiving frame (9) is telescopically arranged in a direction perpendicular to the plate surface of the auxiliary guide plate (5-1).

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