CN212097976U - Automatic offset press with small floor area - Google Patents

Abstract

The utility model relates to an automatic offset press with small occupied area, which comprises a main frame and an offset printing device, a drying device and a material receiving device which are sequentially passed by a tray assembled on the main frame, wherein a plane substrate is fixedly arranged in the tray; the offset printing device is used for performing positioning offset printing on the planar base materials in the trays passing through in sequence; the drying device comprises a shell, and an ascending mechanism, a descending mechanism and an exhaust mechanism which are assembled in the shell, the drying device improves the utilization rate of a longitudinal space in a mode of lifting a tray firstly and then descending the tray, and the air inlet and the exhaust mechanism of the drying device are configured, so that the air in the shell flows transversely, and the solvent volatilization speed and the drying efficiency are improved; and the air that the air inlet got into is difficult to be discharged by the feed inlet and the discharge gate of casing under the negative pressure and is used more environmental protection.

Description

Automatic offset press with small floor area

Technical Field

The utility model relates to the field of offset presses, in particular to an automatic offset press which is used for the surface of shoe materials or other plane materials and has small occupied area.

Background

Offset printing is a type of lithographic printing, which is simply a printing method in which the image on a printing plate is transferred to a printing material by means of a rubber blanket. The offset printing is carried out by single-color or multi-color multi-time overprinting, namely, when printing a printed matter, pictures and texts with different colors on a printing plate are accurately overlapped on the same printed matter; and the mesh points of various colors are not deformed, the pictures and the texts are not deformed, and the color is gorgeous and rich in stereoscopic impression. The offset printing is required to have extremely high degree of registration, and the printed glue layer needs to be dried before the next overprinting is finished in each printing.

When a common shoe material offset press in the market works at present, a shoe material to be printed is fixed on a tray according to a specified direction and position; after the offset press performs offset printing on the shoe materials on the tray, the tray runs on the horizontally extending conveying mechanism, and after required natural air drying or drying, the tray is recycled to perform the next same-color offset printing, or enter an offset printing device with other colors and graphs for overprinting in the next procedure. The drying and conveying mechanism configured in the glue layer process of the existing offset press basically extends horizontally, so that the overall equipment length of the offset press is larger (for example, a multifunctional composite press disclosed in the application No. 200910049679.2 Chinese invention patent application comprises an intaglio printing unit and strip-shaped production line equipment formed by mechanisms such as a first replaceable offset printing unit, a second replaceable offset printing unit, a third replaceable offset printing unit, a fourth replaceable offset printing unit, a replaceable relief printing unit, a replaceable screen printing unit, a first replaceable flexographic printing unit and the like which are sequentially arranged on the right side of the intaglio printing unit, the equipment has a very complicated structure, can be installed only by occupying a very large field area, the length of a monochrome offset press is usually about 50 meters, the required plant area is large, and the cost is high; and the horizontally extending conveying mechanism is in a completely open state or the feeding end and the discharging end of the horizontally extending conveying mechanism are in a straight-through state, so that the difficulty in absorbing harmful gas generated by offset printing is high, the pollution degree to the production environment and atmosphere is high, and the environment-friendly production is not facilitated.

Disclosure of Invention

The utility model provides an automatic offset press that area is little to overcome the equipment area that current conventional offset press exists big, required factory building area is big, with high costs, great to production environment and atmospheric pollution degree, the problem of unfavorable environmental protection production.

The utility model adopts the following technical scheme:

the automatic offset press with small floor area comprises a main frame, and an offset printing device, a drying device and a material receiving device which are sequentially passed by a tray assembled on the main frame, wherein a plane substrate is fixedly arranged in the tray; the offset printing device is used for performing offset printing on the plane base materials in the trays passing through in sequence; the drying device comprises a shell, a lifting mechanism, a descending mechanism and an exhaust mechanism, wherein the lifting mechanism, the descending mechanism and the exhaust mechanism are assembled in the shell; the tray output by the offset printing device sequentially enters a lifting mechanism through a feeding hole of the shell, the lifting mechanism is used for lifting the tray to the top in sequence, the tray at the top sequentially enters the descending mechanism, the descending mechanism is used for descending the tray to a discharging hole of the shell in sequence, and the discharging hole is arranged below the feeding hole; the exhaust mechanism is fixedly assembled on the shell and comprises an exhaust fan and an exhaust channel, the exhaust fan is used for exhausting air in the shell to the exhaust channel, the exhaust channel is internally provided with a deodorization mechanism, and gas in the exhaust channel is exhausted to the atmosphere through the deodorization mechanism. And a photochemical automatic monitoring system is also arranged in the exhaust channel and used for detecting whether VOCs (volatile organic compounds) in the gas passing through the deodorization mechanism reach the emission standard or not, and suspending the operation of the equipment and giving an alarm when the emission standard is not met. The receiving device comprises a receiving conveyer belt, a return conveyer belt, a lifting conveyer belt and a first lifting driving device; the tray output by the descending mechanism is transmitted back to the offset printing device through the material receiving conveying belt, the back conveying belt and the lifting conveying belt in turn according to the back conveying direction; or the tray output by the descending mechanism is sequentially conveyed to the next offset press through the material receiving conveying belt and the lifting conveying belt in the output direction; the first lifting driving device is used for lifting the lifting conveying belt to the horizontal height of the feeding hole of the shell.

In a further improvement, the offset printing device comprises a lifting table, an offset printing plate and a stopping trigger, wherein the pulling trigger is triggered to stop the tray from advancing when the tray enters the offset printing device to a specified position, the lifting table is connected in an aligned mode to lift the tray to the specified position, and the offset printing plate is used for performing offset printing operation on the primary planar substrate in an aligned mode with the tray.

In a further improvement, the top surface and/or the bottom surface of the tray are respectively provided with at least two positioning holes with conical surface structures at the hole bottoms, the bottom surface of the offset plate and/or the top surface of the lifting table are respectively and correspondingly provided with positioning columns with conical surface structures at the end parts, and the positioning columns are in one-to-one correspondence with the positioning holes and are in matched insertion connection with the positioning holes. The blocking trigger is preferably a travel switch or a laser sensor or an infrared sensor.

In a further improvement, the housing further comprises an air inlet, the air inlet is provided with a blower, the air inlet is arranged on the side wall of the housing with the lower middle part on one side of the descending mechanism, the exhaust blower is arranged on the side wall of the housing with the upper middle part on the opposite surface of the air inlet or on the top of the housing, and air is transversely blown to one side of the ascending mechanism from one side of the descending mechanism. The air inlet is provided with an electric heating heat source which is used for heating the air entering from the air inlet.

From the above description of the structure of the present invention, compared with the prior art, the present invention has the following advantages: the utility model discloses an offset press simple structure, this offset press device's tray and elevating platform, offset plate use through the cooperation of toper locating hole and reference column, can improve offset plate and plane substrate effectively and treat the regional counterpoint precision of seal, realize high accuracy overprinting, effectively improve offset press device's registration accuracy. In addition, the arrangement of the ascending mechanism and the descending mechanism of the drying device enables the offset press to more reasonably utilize the longitudinal space, and the equipment length of the offset press can be shortened to 4-5 meters, so that the equipment length of the offset press is effectively shortened, the occupied area of the equipment is reduced, the space utilization rate is effectively improved, the applicability of the field is changed, and the production cost is reduced; in addition, the air inlet and the exhaust mechanism of the drying device are configured, so that the air in the shell flows transversely, the air sucked by the air inlet can transversely pass through the surface of the offset printing layer, the volatilization speed of the solvent is improved, and the drying efficiency of the offset printing layer is improved; and the air that the air inlet got into is difficult to be discharged by the feed inlet and the discharge gate of casing under the negative pressure for the air that gets into in the casing all discharges through exhaust passage and deodorization mechanism's processing, thereby makes drying device can carry out deodorization processing to the air more comprehensively, makes the operation of offset press to the influence of surrounding environment littleer, uses more environmental protection. Finally, the material receiving device is configured, so that the operation of the offset printing machine can be selected to be transmitted back to the offset printing machine for single-color overprinting offset printing treatment or be selected to be transferred to another offset printing machine for overprinting treatment of different patterns and colors according to the actual offset printing times of the planar base material on the tray; the configuration of the material receiving device enables the offset press to have a modular assembly function, so that the offset press can be conveniently arranged and combined in order by connecting a plurality of offset presses end to form an offset printing assembly line, and the streamlined production of multiple overprints with different colors and different patterns is realized.

Drawings

Fig. 1 is a schematic front view and a partial enlarged view of an offset printing press according to a first embodiment.

Fig. 2 is a left side view of the lifting mechanism of fig. 1 and a partially enlarged view thereof.

Fig. 3 is a left side view of the first elevation driving apparatus.

Detailed Description

The following describes embodiments of the present invention with reference to the drawings.

Referring to fig. 1 to 3, the automatic offset printing machine with a small floor space according to the present embodiment includes a main frame 1, and an offset printing device 3, a drying device 4, and a receiving device 5, which are sequentially passed through by a tray 2 mounted on the main frame 1, wherein a planar substrate is fixedly mounted in the tray 2.

With continued reference to fig. 1, the offset printing device 3 is used for offset printing of the positioning of planar substrates in successive trays 2. The offset printing device 3 includes a lifting table 31, an offset printing plate 32, and a stopping trigger 33, wherein the stopping trigger is triggered to stop the advance of the tray 2 when the tray 2 enters the offset printing device 3 to a designated position, the lifting table 31 is connected in an aligned manner to lift the tray 2 to the designated position, and the offset printing plate 32 is used for performing an offset printing operation on a planar substrate in an aligned manner with the tray 2. With reference to fig. 1, at least two positioning holes 20 with conical bottom surfaces are respectively formed on the top surface and/or the bottom surface of the tray 2, positioning posts 311 with conical end surfaces are respectively correspondingly formed on the bottom surface of the offset plate 32 and/or the top surface of the lifting table 31, and the positioning posts 311 are correspondingly and fittingly inserted into the positioning holes 20 one by one. The blocking trigger 33 is preferably a travel switch or a laser sensor or an infrared sensor. This offset printing device 3's tray 2 uses through the cooperation of toper locating hole 20 and reference column 311 with elevating platform 31, offset plate 32, can improve offset plate 32 effectively and treat the regional counterpoint precision of printing with the plane substrate, realizes high accuracy overprinting, effectively improves offset printing device 3's degree of registration.

With reference to fig. 1, the drying device 4 includes a casing 41, and an ascending mechanism 6, a descending mechanism 7, and an exhausting mechanism 8 which are assembled in the casing 41, and the casing 41 is fixedly assembled to the main frame 1. The tray 2 output by the offset printing device 3 sequentially enters the ascending mechanism 6 through the feeding hole of the shell 41, the ascending mechanism 6 is used for sequentially ascending the tray 2 to the top, the tray 2 at the top sequentially enters the descending mechanism 7, the descending mechanism 7 is used for sequentially descending the tray 2 to the discharging hole of the shell 41, and the discharging hole is lower than the feeding hole.

With continued reference to fig. 1 and 2, the ascending mechanism 6 and the descending mechanism 7 of the present embodiment are vertical feeding modes driven by the synchronous belt 62, specifically: the ascending mechanism 6 and the descending mechanism 7 both comprise two supporting walls 61 which are symmetrically distributed along the vertical plane in the front and back direction, each supporting wall 61 comprises at least two synchronous belts 62 which extend vertically and a plurality of supporting rods 63 which extend horizontally, and each supporting rod 63 is fixedly connected with at least two synchronous belts 62; as shown in fig. 1, an end of the support rod 63 is fixedly connected to an outer peripheral surface of the timing belt 62. As shown in fig. 2, the cross section of the support bar 63 is L-shaped or U-shaped, and the openings of the two support bars 63 are oppositely arranged; all the timing belts 62 of the front and rear support walls 61 run synchronously along a set direction (the rotation direction of the timing belts 62 of the lifting mechanism 6 is shown by the solid arrow in fig. 2) to drive all the support rods 63 to run in a horizontally extending manner all the time, and the trays 2 are horizontally arranged on the front and rear support rods 63 in a one-to-one correspondence. The drying device 4 further includes a feeding conveyor belt 64, the feeding conveyor belt 64 is disposed at the bottom of the lifting mechanism 6, the feeding conveyor belt 64 is disposed between the two support walls 61, and the feeding conveyor belt 64 is used for sequentially conveying the trays 2 processed by the offset printing device 3 to the corresponding support rods 63. The ascending mechanism 6 is provided with a counting sensing device 65, and the counting sensing device 65 is used for counting the number of the trays 2 conveyed into the ascending mechanism 6 by the feeding conveyer belt 64; after the feeding conveyor belt 64 conveys the desired number of trays 2, the control device controls the lifting mechanism 6 to convey the trays 2 upward according to the signal of the counting sensor 65. With continued reference to fig. 1 and 2, the drying device 4 further includes a material pushing mechanism 42, the material pushing mechanism 42 includes a sliding rail 421, a sliding block 422 and a pushing rod 423, the sliding rail 421 is fixedly assembled on the inner side wall of the housing 41, the sliding block 422 is driven by a motor, a cylinder or a lead screw to perform a directional reciprocating motion along the sliding rail 421 in the left-right direction, and the sliding block 422 drives the pushing rod 423 to horizontally push the tray 2 at the top layer of the ascending mechanism 6 into the two supporting rods 63 corresponding to the top layer of the descending mechanism 7. The pushing mechanism 42 is provided with a sensor for monitoring whether the tray 2 is arranged on the top layer of the ascending mechanism 6, the control device controls whether the ascending mechanism 6 continuously lifts the tray 2 upwards according to the sensor, when the tray 2 is arranged on the top of the ascending mechanism 6, the ascending mechanism 6 stops lifting the tray 2 upwards, and the pushing mechanism 42 pushes the tray 2 into the descending mechanism 7 under the condition that the supporting rod 63 on the top of the ascending mechanism 6 is aligned with the supporting rod 63 on the top of the descending mechanism 7. The timing belt 62 on the top of each of the ascending mechanism 6 and the descending mechanism 7 is a fixed value (i.e. the distance between two adjacent upper and lower support rods 63) set as a travel stroke for each lifting or descending, and preferably, the ascending mechanism 6 and the descending mechanism 7 are operated synchronously. The ascending mechanism 6 and the descending mechanism 7 can be provided with auxiliary equipment such as a conventional travel switch and a displacement sensor on the market, so that the alignment precision of the supporting rods 63 at the tops of the ascending mechanism and the descending mechanism is improved. The arrangement of the ascending mechanism 6 and the descending mechanism 7 of the drying device 4 enables the offset press to utilize the longitudinal space more reasonably, and the equipment length of the offset press can be shortened to 4-5 meters, so that the equipment length of the offset press is effectively shortened, the occupied area of the equipment is reduced, the space utilization rate is effectively improved, the applicability of the field is changed, and the production cost is reduced.

With continued reference to fig. 1, the exhaust mechanism 8 is fixedly mounted on the housing 41, the exhaust mechanism 8 includes an exhaust fan 81 and an exhaust passage 82, the exhaust fan 81 is used for exhausting the air in the housing 41 to the exhaust passage 82, a deodorization mechanism 83 is disposed in the exhaust passage 82, the deodorization mechanism 83 is preferably a commercially available activated carbon deodorization mechanism 83, and the activated carbon deodorization mechanism 83 has a blocking effect on the exhaust passage 82, so that all the gas in the exhaust passage 82 needs to be treated by the deodorization mechanism 83 to be exhausted to the atmosphere. With continued reference to fig. 1, a photochemical automatic monitoring system 84 is further disposed in the exhaust passage 82, the photochemical automatic monitoring system 84 is used for detecting whether the Volatile Organic Compounds (VOCs) in the gas passing through the deodorization mechanism 83 meet the emission standard, and suspending the operation of the apparatus and giving an alarm if the emission standard is not met; waiting for maintenance. The housing 41 further includes an air inlet 410, and the air inlet 410 is configured with a blower for blowing air outside the housing 41 into the housing 41. The air inlet 410 is provided on the side wall of the casing 41 on the lower middle portion of one side of the descending mechanism 7, the exhaust fan 81 is provided on the side wall of the casing 41 on the upper middle portion of the opposite side of the air inlet 410 or on the top of the casing 41, and air is blown from one side of the descending mechanism 7 to one side of the ascending mechanism 6 in the lateral direction. The air inlet 410 is provided with an electric heating source for heating air introduced from the air inlet 410. The air inlet and the exhaust mechanism 8 of the drying device 4 are configured to make the air in the housing 41 flow transversely, which is beneficial to the air sucked by the air inlet 410 to pass transversely from the surface of the offset printing layer to improve the volatilization speed of the solvent, thereby improving the drying efficiency of the offset printing layer; and the air that the air inlet got into is difficult to be discharged by the feed inlet and the discharge gate of casing 41 under the negative pressure for the air that gets into in the casing 41 all passes through exhaust passage 82 and deodorizing mechanism 83's processing discharge, thereby makes drying device 4 carry out deodorizing treatment to the air more comprehensively, makes offset press's operation less to the influence of surrounding environment, uses more environmental protection.

With reference to fig. 1 and 2, the receiving device 5 includes a receiving conveyer 51, a returning conveyer 52, a lifting conveyer 53 and a first lifting driving device; the tray 2 output by the descending mechanism 7 is transmitted back to the offset printing device 3 in the back direction sequentially through the receiving conveyer belt 51, the back conveying conveyer belt 52 and the lifting conveyer belt 53; or, the tray 2 output by the descending mechanism 7 is sequentially conveyed to the next offset printing machine through the material receiving conveying belt 51 and the lifting conveying belt 53 in the output direction; the first lifting driving device is used for lifting the lifting conveyer belt 53 to the level of the feeding hole of the shell 41. The first lifting driving device and the second lifting driving device each comprise a guide rod 54, a pull rope 55 and a reversing pulley 56, the lifting conveyer belt 53 and the lifting disk 72 both perform lifting motion along the guide rod 54, one end of the pull rope 55 is fixedly connected with the lifting conveyer belt 53 and the lifting disk 72, and the other end of the pull rope 55 is fixedly connected with a power output rod of the air cylinder 57 through the reversing pulley 56; the cylinder 57 may be replaced by a motor, a cylinder, a lead screw, or other conventional driving means to pull the pull cord 55. The material receiving device 5 is configured to ensure that the operation of the offset printing machine can be selected to be transmitted back to the offset printing machine for single-color overprinting offset printing treatment or be selected to be transferred to another offset printing machine for overprinting treatment of different patterns and colors according to the actual offset printing times of the planar base material on the tray 2; the configuration of the material receiving device 5 enables the offset printing machine to have a modular assembly function, so that the offset printing machine can be conveniently used for orderly arranging and combining a plurality of offset printing machines end to form an offset printing assembly line, and the streamlined production of multiple overprinting with different colors and different patterns is realized.

The working mode of the automatic offset printing machine with small floor area of the embodiment is as follows: referring to fig. 1 to 3, firstly, the lifting conveyer belt 53 in the return direction rises to the feeding height of the offset printing device 3, the tray 2 fixed with the planar base material is manually placed on the lifting conveyer belt 53, the lifting conveyer belt 53 transfers the tray 2 into the offset printing device 3, the lifting table 31 of the offset printing device 3 rises and is in positioning connection with the tray 2, then the tray 2 is continuously lifted to the offset printing station, and after the offset printing plate 32 descends and is in positioning connection with the tray 2, the offset printing plate 32 performs primary offset printing processing on the planar base material in the tray 2; then the lifting platform 31 descends, the tray 2 resets and is actively transferred to the corresponding support bar 63 at the bottom layer of the lifting mechanism 6 by the feeding conveyer belt 64, and when the counting sensing device 65 senses that the number of the trays 2 conveyed on the support bar 63 reaches a set value, the lifting mechanism 6 performs a lifting action of one unit stroke under the control of the support bar 63 at the top of the lifting mechanism 6. After the tray 2 is lifted to the top layer by layer, after the lifting mechanism 6 is aligned with the top support rod 63 of the lowering mechanism 7, the tray 2 is pushed into the support rod 63 at the top of the lowering mechanism 7 by the pushing mechanism 42 of the lifting mechanism 6, the tray 2 is transferred downwards layer by the lowering mechanism 7, in the lifting and lowering processes of the tray 2, the air inlet blower and the air exhaust mechanism 8 in the shell 41 operate to enable air to enter the shell 41 from the air inlet, the air flows transversely and is exhausted from the air exhaust channel 82, and the solvent in the offset printing layer is taken away by the flow of the air to be dried and solidified. The trays 2 on the support rods 63 at the bottommost layer of the descending mechanism 7 are moved out one by the material receiving conveying belt 51; according to the offset printing times of the plane base material on the tray 2, if the offset printing times reaches a set value, the receiving conveyer 51 transfers the tray 2 to a lifting conveyer 53 in the output direction, and the tray 2 is transferred to the next offset printing machine by the lifting conveyer 53 to carry out the next offset printing process; if the offset printing times does not reach the set value, the receiving conveyer 51 transfers the trays 2 to the return conveyer 52, and the trays 2 on the return conveyer 52 are lifted to the feeding end of the offset printing device 3 of the offset printing machine one by one through the lifting conveyer 53 in the return direction to perform the next overprinting preparation; the flat base materials on all the trays 2 are circularly manufactured in the way, and the required offset printing operation is completed on the offset printing machine.

The above-mentioned be the utility model discloses a concrete implementation way, nevertheless the utility model discloses a design concept is not limited to this, and the ordinary use of this design is right the utility model discloses carry out immaterial change, all should belong to the act of infringement the protection scope of the utility model.

Claims (3)

1. The automatic offset press with small floor area comprises a main frame, and an offset printing device, a drying device and a material receiving device which are sequentially passed by a tray assembled on the main frame, wherein a plane substrate is fixedly arranged in the tray; the method is characterized in that:

the offset printing device is used for performing positioning offset printing on the planar base materials in the trays passing through in sequence;

the drying device comprises a shell, and a lifting mechanism, a descending mechanism and an exhaust mechanism which are assembled in the shell, wherein the shell is fixedly assembled on the main rack; the tray output by the offset printing device sequentially enters a lifting mechanism through a feeding hole of the shell, the lifting mechanism is used for lifting the tray to the top in sequence, the tray at the top sequentially enters the descending mechanism, the descending mechanism is used for descending the tray to a discharging hole of the shell in sequence, and the discharging hole is arranged below the feeding hole;

the exhaust mechanism is fixedly assembled on the shell and comprises an exhaust fan and an exhaust channel, the exhaust fan is used for exhausting air in the shell to the exhaust channel, a deodorization mechanism is arranged in the exhaust channel, gas in the exhaust channel is exhausted to the atmosphere through the deodorization mechanism, and the deodorization mechanism is an activated carbon deodorization mechanism;

the material receiving device comprises a material receiving conveying belt, a return conveying belt, a lifting conveying belt and a first lifting driving device; the tray output by the descending mechanism is transmitted back to the offset printing device through the receiving conveyer belt, the back conveying belt and the lifting conveyer belt in turn according to the back conveying direction; or the tray output by the descending mechanism is sequentially conveyed to the next offset press through the material receiving conveying belt and the lifting conveying belt in the output direction; the first lifting driving device is used for lifting the lifting conveying belt to the horizontal height of the feeding hole of the shell.

2. The small footprint automatic offset printing press according to claim 1, further comprising: the shell further comprises an air inlet, the air inlet is provided with a blower, the air inlet is formed in the side wall, on the lower portion of the middle portion of one side of the descending mechanism, of the shell, the exhaust blower is arranged on the side wall, on the upper portion of the middle portion of the opposite face of the air inlet, of the shell or on the top of the shell, and air is blown to one side of the ascending mechanism from one side of the descending mechanism in the transverse direction.

3. The small footprint automatic offset printing press according to claim 2, wherein: the air inlet is provided with an electric heating source, and the electric heating source is used for heating air entering from the air inlet.

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