CN111746052A - Sectional conveying and sectional heating type double-faced machine - Google Patents
Sectional conveying and sectional heating type double-faced machine Download PDFInfo
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- CN111746052A CN111746052A CN202010636677.XA CN202010636677A CN111746052A CN 111746052 A CN111746052 A CN 111746052A CN 202010636677 A CN202010636677 A CN 202010636677A CN 111746052 A CN111746052 A CN 111746052A
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- conveying
- heating
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- hot plate
- paper
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
- B31F1/20—Corrugating; Corrugating combined with laminating to other layers
Abstract
The invention relates to a sectional conveying and sectional heating double-sided machine, which comprises a front hot plate conveying part and a rear conveying part, wherein a ventilating and heating transition section is arranged between the front hot plate conveying part and the rear conveying part, a ventilating and heating passage is arranged on the ventilating and heating transition section, a heat source is arranged on the upper side and/or the lower side of the ventilating and heating passage, a roller for preventing a pattern paper printing layer from being scraped is arranged on the upper side of the ventilating and heating passage, a plurality of rollers are arranged, and a ventilating gap is formed between the rollers. The invention provides that by segmented delivery, each delivered segment can have different functions, for example: the front portion carries out quick two-sided heating, promotes the facial tissue and sees the bonding speed of hole paper, then to ventilative heating changeover portion, both can heat, continues to strengthen the facial tissue and sees the bonding of hole paper, simultaneously, can breathe freely again, stoving with higher speed for the facial tissue is pasted with the bonding paste of seeing the hole paper and is done admittedly stably, moreover, avoids having too much moisture in the paper and influences the cardboard quality, realizes cardboard quality and production efficiency two unmistakable.
Description
Technical Field
The invention relates to a double-sided machine of paperboard production equipment, in particular to a sectional conveying and heating double-sided machine which can improve the bonding speed and quality of surface paper (such as preprinted paper) and pitted paper.
Background
The development of production equipment of corrugated boards is closely related to the printing process, and the current preprinting mainly comprises three types:
1. offset preprinting: the printing quality is good, the plate making cost is low, the printing plate has low printing endurance, and solvent type printing ink which is not environment-friendly is selected.
2. Gravure preprinting: the printing quality is good, the plate-making cost is higher, the printing endurance is good, and solvent ink is selected.
3. Flexible printing and preprinting: the printing quality is good, the cost of the paperboard is low, the printing endurance is moderate, and the environment-friendly water-based ink for the carton is selected.
The three preprinting modes have advantages respectively, but the preprinting prospect of the flexo printing is wider in the long run, because the flexo printing can meet the quality requirements of customers with high-quality products, and the non-toxic and harmless carton water-based ink is used, so that the flexo printing conforms to the environmental protection trend and is beneficial to the health of consumers and front-line workers.
The preprinting is roll printing, the printed roll is used as the outermost paper on a corrugating machine, the preprinting outer paper and the pit paper coming out of the corrugating machine are adhered together through a double-faced machine, and the preprinting is suitable for large-volume color printing cartons.
However, the existing double-sided machine mainly has two paper feeding modes, one mode is that the printing layer of the pre-printed paper is downward during transmission, the printing layer is in sliding friction fit with a hot plate at the lower side of a hot plate channel of the double-sided machine, and the surface temperature of the printing layer is very high under the condition of high-speed transmission, so that a high-temperature-resistant film needs to be arranged on the surface of the printing layer of the pre-printed paper, and therefore, the cost is greatly increased; the high temperature resistant film is in sliding friction fit with the hot plate, and the high temperature resistant film can be scraped, so that the surface of the carton can generate poor wire drawing and scraping feeling.
The other is that the printing layer of the preprinting paper faces upwards during conveying, the printing layer moves synchronously with the conveying belt above the hot plate channel, so that the scratch is not easy to occur, but the derived problems are that the temperature of the upper side of the hot plate channel of the double-sided machine is not enough, so that the adhesion between the preprinting paper and the pitted paper is poor, and the drying efficiency of paste and the quality of the paperboard are influenced because the air permeability of the conveying belt is poor.
To sum up, need design a section can be suitable for the ink preprinting paper of low cost and sees the laminating of hole paper, does not influence both laminating, dry and solid efficiency, does not scrape the double facer of the ink preprinting paper printing layer of flower, assurance cardboard quality.
Disclosure of Invention
The invention aims to provide a sectional conveying and heating type double-face machine which is reasonable in structure, at least one section of the machine is heated to enable face paper and pit paper to be bonded, at least one section of the machine can be heated and is air-permeable, so that the bonding speed and quality of the face paper (which can be preprinted paper) and the pit paper are improved, and the machine is suitable for using low-cost high-quality flexible printing preprinting paper.
The purpose of the invention is realized as follows:
the utility model provides a sectional conveying and sectional heating formula double facer, includes preceding hot plate conveying portion and back conveying portion, its characterized in that: preceding hot plate conveying portion is equipped with ventilative heating changeover portion between the conveying portion and the back conveying portion, and ventilative heating changeover portion is equipped with ventilative heating channel, and the upside and/or the downside of ventilative heating channel are equipped with the heat source, and the upside of ventilative heating channel is equipped with the cylinder that prevents to scrape the glossy paper printing layer, and the cylinder is equipped with many, forms air permeable gap between cylinder and the cylinder.
The aim of the invention can also be solved by the following technical measures:
more specifically, the front hot plate conveying part and the rear conveying part are both provided with power and move synchronously at the same speed.
As a further scheme, the ventilation heating transition section comprises a support frame, the ventilation heating channel is arranged on the support frame, the rollers are rotatably arranged on the support frame, and the rollers are transversely arranged.
As a further scheme, a movable support piece and a lifting driving mechanism are further arranged on the supporting frame, the roller is rotatably arranged on the movable support piece, the movable support piece is movably arranged on the supporting frame up and down and is connected with the supporting frame through the lifting driving mechanism, and the position of the movable support piece is adjusted through the lifting driving mechanism, so that the distance between the roller and the lower side of the ventilation heating channel is adjusted.
As a further scheme, a heat source is arranged on the roller to form a heating roller. The heat source can be adjusted in temperature and switched on and off, so that the function of the roller is improved, and the requirements of more paperboard processing technologies are met. The heating drum may be a steam heating drum, an electromagnetic heating drum, or the like. The density of putting of heating cylinder is decided according to the actual production demand, in addition, in order to let behind the heating cardboard, the steam that the cardboard was passed through can be discharged faster, can suitably enlarge the clearance between the heating cylinder, perhaps, adds the air exhauster, and the preferred setting of air exhauster is in the top of heating cylinder to reach the mesh of fast drying.
As a further scheme, a heat source is arranged on the lower side of the air-permeable heating channel, and the heat source is a transition section hot plate.
As a further scheme, the front hot plate conveying part comprises a hot plate part support, a front paper feeding channel is arranged on the hot plate part support, a hot plate part conveying belt and a lower hot plate are respectively arranged on the upper side and the lower side of the front paper feeding channel, a conveying belt heating body is arranged at least close to the inlet end of the front paper feeding channel on the hot plate part conveying belt, and the hot plate part conveying belt is heated before entering the front paper feeding channel, so that a paper board entering the front paper feeding channel can be heated as soon as possible.
As a further scheme, an upper hot plate is further arranged on the upper side of the front paper feeding channel and is arranged on one side, back to the front paper feeding channel, of the hot plate conveying belt.
As a further scheme, the upper hot plate is connected with the hot plate part support through a plate pressing mechanism, and the plate pressing mechanism is used for adjusting the height position of the upper hot plate. The pressing plate mechanism belongs to the prior art, and the structure of the pressing plate mechanism is not described in detail.
As a further scheme, back conveying portion includes output section support, output conveyer belt and driven voller, and output conveyer belt and driven voller set up respectively from top to bottom on output section support, form the back paper feed passageway between output conveyer belt and the driven voller, and the driven voller is equipped with many, and each driven voller transversely arranges and respectively with output section support normal running fit. The driven roller is in rolling fit with the corrugated board, and friction is reduced.
The invention has the following beneficial effects:
(1) the sectional conveying and sectional heating type double-sided machine can have different functions through the sectional conveying, and each conveying section can have different functions, such as: the front portion carries out quick two-sided heating, promotes the facial tissue and sees the bonding speed of hole paper, then to ventilative heating changeover portion, both can heat, continues to strengthen the facial tissue and sees the bonding of hole paper, simultaneously, can breathe freely again, stoving with higher speed for the facial tissue is pasted with the bonding paste of seeing the hole paper and is done admittedly stably, moreover, avoids having too much moisture in the paper and influences the cardboard quality, realizes cardboard quality and production efficiency two unmistakable.
(2) The ventilating heating transition section in the sectional conveying and sectional heating type double-sided machine can be used for single-sided heating or double-sided heating, and the height of the roller can be adjusted, so that the process requirements of various corrugated papers are met;
(3) the rollers of the breathable heating transition section in the sectional conveying and sectional heating double-sided machine are arranged in a rolling manner, so that the surface of the facial tissue cannot be scratched, and the sectional conveying and sectional heating double-sided machine is suitable for pre-printing the facial tissue;
(4) the sectional conveying and heating type double-sided machine is particularly suitable for the requirements of bonding and processing the bottom of pre-printed paper and pitted paper with the printing layer of the pre-printed paper upward; moreover, the preprinting paper can adopt low-cost high-quality flexible preprinting paper.
Drawings
Fig. 1 is a schematic view of a simple structure of a double-sided machine according to an embodiment of the invention.
Fig. 2 is an enlarged schematic view of a portion a in fig. 1.
FIG. 3 is a schematic view of the heating principle of the front end of the front paper feeding path according to the present invention.
FIG. 4 is a schematic view of the heating principle of the gas permeable heating transition section of the present invention.
Fig. 5 is a schematic front view of a double-sided machine (a part of a section of an air-permeable heating transition section) according to the present invention.
FIG. 6 is a schematic perspective view of a double-side machine according to the present invention.
Fig. 7 is a schematic view of a partially cut-away three-dimensional structure of the double-sided machine of the invention.
Fig. 8 is an enlarged schematic view of B in fig. 7.
Fig. 9 is an enlarged schematic view of the structure at C in fig. 7.
Fig. 10 is an enlarged view of the structure at D in fig. 9.
Fig. 11 is an enlarged schematic view of E in fig. 10.
In the figure:
10 is a front hot plate conveying part, 101 is a front paper feeding channel, 102 is a hot plate conveying belt, 103 is an arc-shaped hot plate, 104 is an upper hot plate, 105 is a lower hot plate, 106 is a hot plate part support, 107 is an inlet end, 108 is a pit paper preheating arc-shaped plate, and 109 is a pressing plate mechanism;
20 is a ventilating and heating transition section, 201 is a ventilating and heating channel, 202 is a transition section hot plate, 203 is a support frame, 204 is a support block, 205 is a support beam, 1 is a heating roller, 11 is a ventilating gap, 2 is a hydraulic cylinder, 21 is a piston rod, 3 is a support rod, 31 is an upper inclined plane, 32 is a guide sleeve, 33 is a guide rod, 4 is a support arm, 41 is an installation plate, 42 is a limit screw, 43 is a cushion block, 44 is an adjusting screw, 45 is a boss, 46 is a locking screw, and 47 is a long hole;
30 is a rear conveying part, 301 is a rear paper feeding channel, and 302 is a driven roller;
40 is a paper for seeing a pit;
50 is pre-printed paper, 501 is a printing layer;
100 is a double-sided machine.
Detailed Description
The invention is further described with reference to the following figures and examples.
Referring to fig. 1, 2, 5, 6 and 7, a sectional conveying and sectional heating type double facer 100 comprises a front hot plate conveying part 10 and a rear conveying part 30, wherein an air-permeable heating transition section 20 is arranged between the front hot plate conveying part 10 and the rear conveying part 30, the air-permeable heating transition section 20 is provided with an air-permeable heating channel 201, heat sources are arranged on the upper side and the lower side of the air-permeable heating channel 201, a plurality of rollers are arranged on the upper side of the air-permeable heating channel 201, and an air-permeable gap 11 is formed between the rollers. The drum is provided with a heat source to form a heating drum 1. The heat source is a steam pipe, and the steam pipe is communicated with the interior of the roller. The steam pipe is connected with a control valve, temperature adjustment is realized by adjusting the control valve, and when the control valve is closed, the heating function of the roller is closed.
The front hot plate conveying part 10 and the rear conveying part 30 are both provided with power and move synchronously at the same speed.
As shown in fig. 9 to 11, the air-permeable heating transition section 20 includes a support frame 203, the air-permeable heating channel 201 is disposed on the support frame 203, the rollers are rotatably disposed on the support frame 203, and the rollers are transversely arranged.
The supporting frame 203 is further provided with a movable supporting piece and a lifting driving mechanism, the roller is rotatably arranged on the movable supporting piece, the movable supporting piece is movably arranged on the supporting frame 203 up and down and is connected with the supporting frame 203 through the lifting driving mechanism, and the position of the movable supporting piece is adjusted through the lifting driving mechanism, so that the distance between the roller and the lower side of the breathable heating channel 201 can be adjusted.
The movable supporting piece comprises a supporting beam 205, a supporting arm 4 and a supporting rod 3, the supporting beam 205 is arranged on the supporting frame 203, the supporting arm 4 is in running fit with the supporting beam 205, the roller is arranged at the lower end of the supporting arm 4 in a rotating mode, the supporting rod 3 is movably arranged on the supporting frame 203 up and down, the lower end of the supporting arm 4 is placed on the supporting rod 3, and the supporting rod 3 is in transmission connection with the lifting driving mechanism.
The supporting frame 203 is provided with a supporting block 204, the top surface of the supporting block 204 is provided with a lower inclined surface, the supporting rod 3 is provided with an upper inclined surface 31, and the upper inclined surface 31 is placed on the lower inclined surface of the supporting block 204; the lifting driving mechanism comprises a hydraulic cylinder 2, and a piston rod 21 of the hydraulic cylinder 2 is in transmission connection with the supporting rod 3.
The support rod 3 is provided with a guide sleeve 32 which points up and down, a guide rod 33 is arranged in the guide sleeve 32, the guide rod 33 is in up-and-down sliding fit with the guide sleeve 32, and a piston rod 21 of the hydraulic cylinder 2 is connected with the guide rod 33.
The supporting arm 4 is in a crank arm shape, and the two ends of the heating roller 1 are connected with the supporting arms 4.
And a cushion block 43 assembly is arranged between the lower end of the supporting arm 4 and the supporting rod 3.
The cushion block 43 assembly comprises a cushion block 43, an adjusting screw 44, a locking screw 46 and a mounting disc 41, the mounting disc 41 is arranged at the lower end of the supporting arm 4, a limiting screw 42 and a connecting hole are formed in the outer side surface of the mounting disc 41, the cushion block 43 is arranged on the outer side of the mounting disc 41, the lower end of the cushion block 43 is placed on the supporting rod 3 in a bearing mode, an elongated hole 47 is formed in the surface of the cushion block 43, the locking screw 46 penetrates through the elongated hole 47 to be connected with the connecting hole, a screw hole penetrating through the upper side and the lower side of the cushion block 43 is formed in the position, corresponding to the limiting screw 42.
A front limiting screw 42 and a rear limiting screw 42 are arranged below the horizontal plane of the surface of the mounting plate 41 corresponding to the central line of the mounting plate, and the connecting hole is arranged below the position between the two limiting screws 42; the front surface of the cushion block 43 is of an inverted convex structure, the screw holes are formed in the front end and the rear end of the cushion block 43 and correspond to the lower portions of the limit screws 42 respectively, a boss 45 is arranged at the bottom of the cushion block 43, and the bottom surface of the boss 45 is arc-shaped and is placed on the top surface of the supporting rod 3.
The lower side of the air-permeable heating channel 201 is provided with a heat source which is a transition section hot plate 202. The transition section platens 202 are steam platens or electromagnetic platens.
Referring to fig. 8, the front hot plate conveying portion 10 includes a hot plate portion support 106, a front paper feeding channel 101 is disposed on the hot plate portion support 106, a hot plate portion conveying belt 102 and a lower hot plate 105 are disposed on upper and lower sides of the front paper feeding channel 101, respectively, a conveying belt heating body is disposed on the hot plate portion conveying belt 102 at least near an inlet end 107 of the front paper feeding channel 101, and the hot plate portion conveying belt 102 is heated before entering the front paper feeding channel 101, so that a paper board entering the front paper feeding channel 101 can be heated as soon as possible.
The conveyor heating body is an arc-shaped hot plate 103 which is arranged outside the hot plate part conveyor 102 and is in surface contact with the hot plate part conveyor 102.
An upper hot plate 104 is further disposed on the upper side of the forward paper feeding channel 101, and the upper hot plate 104 is disposed on a side of the hot plate portion conveying belt 102 facing away from the forward paper feeding channel 101.
The upper platen 104 is connected to the platen holder 106 by a platen mechanism 109, and the platen mechanism 109 adjusts the height of the upper platen 104.
The hot plate part support 106 is provided with a plurality of roller bodies above the front paper feeding channel 101, one of the roller bodies is a power roller, and the hot plate part conveying belt 102 is wound outside the roller bodies.
The hot plate portion support 106 is provided with a pit paper preheating arc plate 108 corresponding to the lower side of the inlet end 107 of the front paper feeding passage 101.
The rear conveying part 30 comprises an output section support, an output conveying belt and driven rollers 302, the output conveying belt and the driven rollers 302 are respectively arranged on the output section support from top to bottom, a rear paper conveying channel 301 is formed between the output conveying belt and the driven rollers 302, the number of the driven rollers 302 is multiple, and the driven rollers 302 are transversely arranged and are respectively in running fit with the output section support.
The working principle is as follows: taking the pre-printed paper 50 and the pit paper 40 as an example, after the pit paper 40 is sized, the pit paper 40 is fed into the front paper feeding channel 101 from the inlet end 107 in the direction of arrow I in fig. 1 in a combined manner that the pit paper 40 is below and the pre-printed paper 50 is above (the printed layer 501 of the pre-printed paper 50 is upward). As shown in fig. 3, since the arc-shaped hot plate 103 heats the hot plate portion conveyor belt 102 near the inlet end 107 (see arrow H1), it is ensured that the hot plate portion conveyor belt 102 entering the inlet end 107 can immediately heat the pre-printed paper 50, and in addition, the pit paper preheating arc plate 108 is provided on the outer lower side of the inlet end 107, so that the pit paper 40 entering the front paper feeding passage 101 can be preheated; after the pre-printed paper 50 and the pit catching paper 40 enter the front paper feeding channel 101, the upper and lower sides thereof are respectively heated by the upper and lower hot plates 104 and 105 on both sides (see arrows H3 and H2) so that the paste between the pre-printed paper 50 and the pit catching paper 40 is steamed, and the pre-printed paper 50 and the pit catching paper 40 are primarily bonded. Then, as shown in fig. 4, the pre-printed paper 50 and the pit paper 40 after the preliminary bonding enter the ventilation heating channel 201, the upper side and the lower side of the pre-printed paper 50 and the pit paper 40 are respectively subjected to double-sided heating by the heating roller 1 and the transition section hot plate 202 (see arrows H5 and H4), the bonding effect of the pre-printed paper 50 and the pit paper 40 is further improved, simultaneously, the heating roller 1 rolls, so that the pre-printed paper 50 is only matched with the printing layer 501 of the pre-printed paper 50 in a rolling manner, the printing layer 501 is not scratched, moreover, due to the gap between the heating rollers 1, ventilation is facilitated (see arrow W), the drying speed of the paste after the steaming is improved, the pre-printed paper 50 and the pit paper 40 are bonded stably, and the corrugated board is. Finally, the corrugated cardboard enters the rear paper feeding path 301 of the rear conveying portion 30 and is then fed out to the next station along arrow O in fig. 1.
Claims (10)
1. The utility model provides a sectional conveying and sectional heating formula double facer, includes preceding hot plate conveying portion (10) and back conveying portion (30), its characterized in that: preceding hot plate conveying portion (10) and back conveying portion (30) are equipped with ventilative heating changeover portion (20) between, ventilative heating changeover portion (20) are equipped with ventilative heating channel (201), and the upside and/or the downside of ventilative heating channel (201) are equipped with the heat source, and the upside of ventilative heating channel (201) is equipped with the cylinder that prevents to scrape the glossy paper printing layer, and the cylinder is equipped with many, forms ventilative clearance (11) between cylinder and the cylinder.
2. The sectional conveying and sectional heating type double facer according to claim 1, wherein: the front hot plate conveying part (10) and the rear conveying part (30) both have power and synchronously move at the same speed.
3. The sectional conveying and sectional heating type double facer according to claim 1, wherein: the breathable heating transition section (20) comprises a support frame (203), the breathable heating channel (201) is arranged on the support frame (203), the rollers are rotatably arranged on the support frame (203), and all the rollers are transversely arranged.
4. The sectional conveying and sectional heating type double facer according to claim 3, wherein: still activity support piece and lift actuating mechanism on support frame (203), the cylinder rotates and sets up on activity support piece, and activity support piece moves about from top to bottom and sets up on support frame (203) and be connected with support frame (203) through lift actuating mechanism, adjusts activity support piece's position through lift actuating mechanism, realizes cylinder and ventilative heating passageway (201) downside distance between adjusting.
5. The sectional conveying and sectional heating type double facer according to claim 1, wherein: the roller is provided with a heat source to form a heating roller (1).
6. The sectional conveying and sectional heating type double facer according to claim 1, wherein: a heat source is arranged on the lower side of the air-permeable heating channel (201), and the heat source is a transition section hot plate (202).
7. The sectional conveying and sectional heating type double facer according to claim 1, wherein: the front hot plate conveying part (10) comprises a hot plate part support (106), a front paper conveying channel (101) is arranged on the hot plate part support (106), a hot plate part conveying belt (102) and a lower hot plate (105) are respectively arranged on the upper side and the lower side of the front paper conveying channel (101), a conveying belt heating body is arranged at least close to an inlet end (107) of the front paper conveying channel (101) of the hot plate part conveying belt (102), and the hot plate part conveying belt (102) is heated before entering the front paper conveying channel (101) so that a paper board entering the front paper conveying channel (101) can be heated as soon as possible.
8. The sectional conveying and sectional heating type double facer according to claim 7, wherein: an upper hot plate (104) is further arranged on the upper side of the front paper feeding channel (101), and the upper hot plate (104) is arranged on one side, back to the front paper feeding channel (101), of the hot plate conveying belt (102).
9. The sectional conveying and sectional heating type double facer according to claim 8, wherein: the upper hot plate (104) is connected with the hot plate part support (106) through a plate pressing mechanism (109), and the plate pressing mechanism (109) is used for adjusting the height position of the upper hot plate (104).
10. The sectional conveying and sectional heating type double facer according to claim 1, wherein: the rear conveying part (30) comprises an output section support, an output conveying belt and a driven roller (302), the output conveying belt and the driven roller (302) are respectively arranged on the output section support from top to bottom, a rear paper conveying channel (301) is formed between the output conveying belt and the driven roller (302), the driven roller (302) is provided with a plurality of rollers, and the driven rollers (302) are transversely arranged and are respectively in running fit with the output section support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010636677.XA CN111746052A (en) | 2020-07-04 | 2020-07-04 | Sectional conveying and sectional heating type double-faced machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010636677.XA CN111746052A (en) | 2020-07-04 | 2020-07-04 | Sectional conveying and sectional heating type double-faced machine |
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| Publication Number | Publication Date |
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| CN111746052A true CN111746052A (en) | 2020-10-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010636677.XA Pending CN111746052A (en) | 2020-07-04 | 2020-07-04 | Sectional conveying and sectional heating type double-faced machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115195258A (en) * | 2022-07-07 | 2022-10-18 | 东莞市茂基机械设备科技有限公司 | Heating and preheating cylinder capable of being controlled in segmented mode and heating and preheating method thereof |
-
2020
- 2020-07-04 CN CN202010636677.XA patent/CN111746052A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115195258A (en) * | 2022-07-07 | 2022-10-18 | 东莞市茂基机械设备科技有限公司 | Heating and preheating cylinder capable of being controlled in segmented mode and heating and preheating method thereof |
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