An apparatus for producing a lettering surface

CN224654557UActive Publication Date: 2026-08-21SHANGHAI BAIXIANG FOOD CO LTD
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Patent Information

Application Number
CN202522113112.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-09-30
Publication Date
2026-08-21
Estimated Expiration
2035-09-30

AI Technical Summary

Technical Problem

[0003]相关技术中,通过主动辊压好面片后送至字模机上,以配合在长面条上刻字,若需要更换刻字则需要更换对应形式的字模机,此种方式操作复杂,制作成本较高

Benefits of technology

[0022]本实用新型提供的刻字面生产装置,包括环形固定件、刻字版以及连接杆,环形固定件固定于位于压面路径最末端的压面辊的端部;至少两个沿第一方向和/或第二方向设置的刻字版可拆卸连接,通过更改刻字版即能够实现刻字样式的更改;通过若干个连接杆穿过沿第二方向设置的至少两个刻字版,且连接杆的端部与环形固定件固定连接,以能够实现沿第二方向设置的至少两个刻字版和压面辊的可靠稳固安装,使压面辊转动时对应的刻字版能够进行刻字,以完成刻字面的生产;若无需刻字,则将刻字版拆卸即可,能够根据用户的需求自行调整;此外,通过将刻字版直接固定于位于压面路径最末端的压面辊上,无需其他辅助部件,降低使用成本和制造成本,更换刻字操作简单便捷,灵活性较强。

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Abstract

The utility model discloses a kind of lettering surface production devices, it is related to food processing technical field, specifically includes: annular fixing, for fixed in the end of the face roller located in the face path last end;Lettering plate, at least two lettering plate detachably connected, at least two lettering plate is arranged along first direction and / or second direction arrangement, first direction is the circumferential direction of annular fixing, second direction is the axial direction of annular fixing;Connecting rod, several connecting rods are set through at least two lettering plate along second direction setting, and the end of several connecting rods is all connected to annular fixing, to be able to at least two lettering plate is fixed to the outer periphery of face roller. By at least two lettering plate through annular fixing and connecting rod realize detachable installation with face roller, to be able to flexibly change lettering plate according to user demand, meet different lettering demand, without other auxiliary components, installation is reliable and stable, easy to operate, cost is lower.
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Description

Technical Field

[0001] This utility model relates to the field of food processing technology, and more specifically, to a printing plate production device. Background Technology

[0002] Engraved noodles are a type of noodle where words are engraved on the noodles. Through techniques such as carving, etching, and laser engraving, text or patterns are formed on the surface of the noodles. Without affecting the taste and quality of the noodles, the blessings are perfectly integrated with the noodles, fulfilling both practical function and cultural and aesthetic value. They play multiple roles in different scenarios, serving as identifiers, commemorative items, and decorations.

[0003] In related technologies, the dough sheet is pressed by an active roller and then sent to a lettering machine to engrave characters on the long noodles. If the characters need to be changed, a corresponding type of lettering machine needs to be changed. This method is complicated to operate and has a high production cost.

[0004] In conclusion, simplifying the engraving process is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] In view of this, the purpose of this utility model is to provide a lettering production device that can change the lettering by replacing the lettering plate. The lettering plate can be detachably installed on the pressing roller without the need for other auxiliary mechanisms, and the cost of use is low.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] An engraving face production apparatus, comprising:

[0008] An annular fastener is used to fix the end of the pressing roller located at the very end of the pressing path;

[0009] The lettering plate, at least two of the lettering plates are detachably connected, and the at least two lettering plates are arranged along a first direction and / or a second direction, wherein the first direction is the circumferential direction of the annular fastener and the second direction is the axial direction of the annular fastener;

[0010] A plurality of connecting rods are provided, passing through at least two of the lettering plates arranged along the second direction, and the ends of the plurality of connecting rods are all connected to the annular fixing member, so as to fix at least two of the lettering plates to the outer periphery of the pressing roller.

[0011] Preferably, it further includes a segmented slot, one end of which engages with the lettering plate located at the edge along the second direction, and the other end of which engages with the annular fixing member. The connecting rod passes through the segmented slot and can be fixed with the annular fixing member.

[0012] Preferably, the segmented slot has an engaging groove on the side near the lettering plate, and the engaging groove engages with the edge of the lettering plate to limit radial movement.

[0013] Preferably, the multiple segmented slots are arranged circumferentially along the annular fixing member, and the end faces of two adjacent segmented slots are fitted together.

[0014] Preferably, the segmented slot includes at least two rings of fixing holes arranged radially thereon, one ring of the fixing holes being used for fixed connection with the end face of the pressing roller, and the other rings of the fixing holes being used for the connecting rod to pass through so as to be fixedly connected with the annular fastener.

[0015] Preferably, the segmented slot includes several rings of fixing holes arranged circumferentially, and the rings of fixing holes are used for the connecting rod to pass through so as to be fixedly connected with the annular fastener;

[0016] The segmented slot also includes several positioning blocks, which are used to cooperate with the positioning slots on the end face of the pressing roller for positioning.

[0017] The positioning block is located between two adjacent fixing holes, or the positioning block and the fixing holes are radially distributed along the segmented slot.

[0018] Preferably, the lettering plate includes a body, one side of which is configured to fit against the outer periphery of the pressing roller, and one side of the body is provided with a plurality of engraving portions, which protrude or are recessed into the body.

[0019] Preferably, each of the lettering plates has a foolproof part on at least one side along the axial direction, the foolproof part being used to prevent fooling when two adjacent lettering plates are connected along the second direction.

[0020] Preferably, the engraving part is detachably connected to the body, and the body is provided with a mounting structure corresponding to each engraving part. The mounting structure can lock the engraving part to the body or disconnect it from the body.

[0021] Preferably, several of the engraved portions are integrally formed with the body.

[0022] The lettering production device provided by this utility model includes an annular fixing member, lettering plates, and connecting rods. The annular fixing member is fixed to the end of the pressing roller located at the end of the pressing path. At least two lettering plates arranged along a first direction and / or a second direction are detachably connected, and the lettering style can be changed by changing the lettering plates. Several connecting rods pass through the at least two lettering plates arranged along the second direction, and the ends of the connecting rods are fixedly connected to the annular fixing member, so as to achieve reliable and stable installation of the at least two lettering plates and the pressing roller arranged along the second direction, so that the corresponding lettering plates can be engraved when the pressing roller rotates, thereby completing the production of the lettering surface. If engraving is not required, the lettering plates can be disassembled, and can be adjusted according to the user's needs. In addition, by directly fixing the lettering plates to the pressing roller located at the end of the pressing path, no other auxiliary parts are required, reducing the cost of use and manufacturing. The lettering replacement operation is simple and convenient, and the flexibility is high.

[0023] The advantages of this utility model are as follows: by detachably installing at least two lettering plates to the pressing roller through a ring-shaped fixing member and a connecting rod, the lettering plates can be flexibly changed according to user needs to meet different lettering requirements. No other auxiliary parts are required, the installation is reliable and stable, the operation is simple and convenient, and the cost is low. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0025] Figure 1 A schematic diagram of the engraving surface production device provided by this utility model;

[0026] Figure 2 This is a schematic diagram of the engraving plate provided by this utility model;

[0027] Figure 3 This is a structural schematic diagram of the annular fastener provided by this utility model;

[0028] Figure 4 for Figure 3 The front view;

[0029] Figure 5 This is a schematic diagram of the segmented card slot provided by this utility model;

[0030] Figure 6 This is another structural schematic diagram of the segmented card slot provided by this utility model.

[0031] Figures 1-6 In the accompanying drawings, the reference numerals include:

[0032] 1- Annular fastener; 2- Segmented slot; 3- Connecting rod; 4- Engraving plate; 5- Pressing roller; 11- Mounting hole; 21- Fixing hole; 22- Engraving groove; 41- Body; 42- Engraving part. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] The core of this utility model is to provide a lettering production device that allows for simple and convenient operation of changing lettering styles and has low operating costs.

[0035] The lettering production device provided by this utility model includes an annular fixing part 1, a lettering plate 4, and a connecting rod 3, as shown below. Figure 1 As shown.

[0036] The annular fastener 1 is used to fix the end of the pressing roller 5 located at the end of the pressing path. The end of the pressing path here refers to the last step of pressing out the shaped sheet. For example, from the initial dough flakes, to the subsequent loose sheets, to the final sheet that becomes thinner, and then to the final shaped pressing sheet. The last step corresponds to the step of shaping the pressing sheet. This is just an example and does not limit the actual pressing path.

[0037] Specifically, the connection between the annular fixing member 1 and the pressing roller 5 can be achieved by fastening components such as screws and bolts. It should be noted that the annular fixing member 1 is fixed to the end of the pressing roller 5, and the pressing roller 5 has two ends. In other words, each pressing roller 5 has an annular fixing member 1 at both ends, and there are two annular fixing members 1.

[0038] At least two lettering plates 4 can be detachably connected. Specifically, the detachable connection means that they can be used in combination or individually, and different lettering plates 4 with different lettering styles can be connected according to actual needs.

[0039] At least two lettering plates 4 are arranged along a first direction and / or a second direction, with the circumference of the annular fastener 1 as the first direction and the axial direction of the annular fastener 1 as the second direction. For example... Figure 1 The direction indicated by 'a' is the first direction, and the direction indicated by 'b' is the second direction.

[0040] like Figure 1As shown, multiple engraving plates 4 are set in the first direction and multiple engraving plates 4 are also set in the second direction, so that they can be distributed in various positions around the pressing roller 5. When engraving, all engraving plates 4 can engrave on the sheet, realize mass production of engraving, and improve production efficiency.

[0041] Alternatively, at least two lettering plates 4 are set along the first direction. In this case, continuous lettering will be formed on one side of the dough sheet, while no lettering will be formed on the other side. The part without lettering corresponds to the part on the pressing roller 5 where no lettering plate 4 is set.

[0042] Alternatively, at least two lettering plates 4 are set along the second direction. In this case, multiple columns of lettering will be formed on the sheet, and the gaps between the columns correspond to the parts of the pressing roller 5 where no lettering plates 4 are set.

[0043] Several connecting rods 3 pass through at least two lettering plates 4 arranged along the second direction to connect the at least two lettering plates 4. Then, the two ends of the connecting rods 3 are respectively connected to the annular fixing members 1 on the corresponding sides, thereby realizing the installation of at least two lettering plates 4 relative to the annular fixing members 1.

[0044] Taking one specific implementation as an example, during the specific installation, several connecting rods 3 first pass through at least two lettering plates 4 arranged along the second direction, and then the annular fixing member 1 on one side and one end of the connecting rod 3 are installed and fixed so that at least two lettering plates 4 are attached to the outer periphery of the pressing roller 5. Then, the annular fixing member 1 on the other side and the other end of the connecting rod 3 are installed.

[0045] During the actual installation, the installation order can be defined according to the actual situation. The above implementation method is only an example.

[0046] In this embodiment, the connection between the end of the connecting rod 3 and the annular fixing member 1 can be achieved by means of threaded connection or snap-fit, without limitation.

[0047] In this embodiment, multiple lettering plates 4 can be set, and these plates can be combined arbitrarily to provide a variety of flexible lettering modes suitable for different lettering needs. The lettering plates 4 are directly fixed by the pressing roller 5 at the end of the pressing path, resulting in a simple structure, low cost, and easy and convenient operation without the need for other auxiliary parts, thus improving mass production efficiency. If lettering is not required, the lettering plates 4 can be directly disassembled without affecting the normal use of the pressing roller 5.

[0048] Based on the above embodiments, please refer to Figure 1 It also includes a segmented slot 2, one end of which is engaged with a lettering plate 4 located at the edge along the second direction, and the other end of the segmented slot 2 is engaged in the annular fixing member 1. The connecting rod 3 passes through the segmented slot 2 and can be fixed with the annular fixing member 1.

[0049] The lettering plate 4 located at the edge position, specifically, if there are two lettering plates 4 set along the second direction, then both lettering plates 4 are lettering plates 4 located at the edge position; if there are three lettering plates 4 set along the second direction, then the first and third correspond to the lettering plates 4 located at the edge position; if there are four lettering plates 4 set along the second direction, then the first and fourth correspond to the lettering plates 4 located at the edge position.

[0050] By using the segmented slot design, at least two lettering plates 4 arranged along the second direction can be limited to prevent relative sliding. By using the connecting rod 3 and the two segmented slots located at both ends of the connecting rod 3, at least two lettering plates 4 can be limited to form an assembly. This assembly can then be installed with the annular fixing parts 1 on both sides.

[0051] For details, please refer to Figure 1 , Figure 3 , Figure 4 The connecting rod 3 passes through the segmented slot 2 and connects to the corresponding annular fixing member 1. The segmented slot 2 can be engaged in the annular fixing member 1 to restrict movement. The connecting rod 3 and the mounting hole 11 of the annular fixing member 1 are fixed by means of fasteners to further restrict movement. The annular fixing member 1 and the pressing roller 5 are fixed, which can ensure the reliable fixation of at least two engraving plates 4 set in the second direction relative to the pressing roller 5, and ensure the engraving effect.

[0052] Based on any of the above embodiments, please refer to Figure 1 , Figure 5 , Figure 6 The segmented slot 2 has a locking groove 22 on the side near the engraving plate 4. The locking groove 22 engages with the edge of the engraving plate 4 to limit radial movement. Figure 6 The locking groove 22 is L-shaped, which can restrict the relative movement of the lettering plate 4 in this way. Combined with the use of the connecting rod 3, it can ensure the axial and radial movement between at least two lettering plates 4, and ensure the reliable installation of the lettering plate 4 relative to the pressing roller 5.

[0053] Based on any of the above embodiments, please refer to Figure 1 Multiple segmented slots 2 are arranged circumferentially along the annular fastener 1, and the end faces of two adjacent segmented slots 2 are fitted together.

[0054] In this embodiment, the arrangement of multiple segmented slots 2 enables multiple lettering plates 4 arranged along the first and second directions to be reliably limited and fixed, so that multiple lettering plates 4 are distributed on the pressing roller 5. Each lettering plate 4 can correspond to the same or different pattern content, which can effectively improve the lettering efficiency and is suitable for mass production of lettered surfaces.

[0055] Multiple segmented slots 2 are arranged circumferentially along the annular fastener 1, and each segmented slot 2 is reliably engaged in the annular fastener 1 to ensure the reliable and stable installation of at least two lettering plates 4 arranged along the second direction.

[0056] Based on any of the above embodiments, please refer to Figure 1 , Figure 5 , Figure 6 The segmented slot 2 includes at least two rings of fixing holes 21 arranged radially therein, one ring of fixing holes 21 is used for fixed connection with the end face of the pressing roller 5, and the other rings of fixing holes 21 are used for the connecting rod 3 to pass through so as to be fixedly connected with the annular fastener 1.

[0057] Please refer to Figure 5 , Figure 6 At least two rings of fixing holes 21 are arranged radially along the segmented slot 2 to simultaneously meet the connection requirements with the pressing roller 5 and the annular fixing member 1.

[0058] Specifically, a ring of fixing holes 21 is directly fixedly connected to the fixing position on the end face of the pressing roller 5 through the fastening component. The fixing position can be a hole set on the end face with its axis parallel to the axis of the pressing roller 5, without much restriction.

[0059] The remaining ring of fixing holes 21 allows the connecting rod 3 to pass through, so that the connecting rod 3 connects the annular fixing part 1, the segmented slot 2, and the engraving plate 4 into one unit. After that, through the fixed connection of the connecting rod 3 and the annular fixing part 1, a reliable connection between the pressing roller 5 and multiple engraving plates 4 can be achieved, so as to ensure reliable and accurate engraving and ensure safe and reliable operation.

[0060] Based on any of the above embodiments, please refer to Figure 1 , Figure 5 , Figure 6 The segmented slot 2 includes several rings of fixing holes 21 arranged circumferentially, and the rings of fixing holes 21 are used for the connecting rod 3 to pass through so as to be fixedly connected with the annular fastener 1.

[0061] The segmented slot 2 also includes several positioning blocks, which are used to cooperate with the positioning slots on the end face of the pressing roller 5 for positioning.

[0062] The positioning block is located between two adjacent fixing holes 21, or the positioning block and fixing holes 21 are distributed radially along the segmented slot 2.

[0063] By setting a positioning groove on the end face of the pressing roller 5, reliable installation positioning can be achieved between the segmented slot 2 and the pressing roller 5. Combined with the snap-fit ​​of the segmented slot 2 and the annular fixing piece 1, the reliable and stable installation of the segmented slot 2 can be guaranteed, thereby ensuring the reliable installation of multiple engraving plates 4 connected by the connecting rod 3 and ensuring the reliable safety of the engraving operation.

[0064] The specific positioning blocks can be located between adjacent fixing holes 21, or the positioning blocks and fixing holes 21 can be radially distributed along the segmented slots 2, depending on the specific usage requirements. In both cases, it is necessary to ensure that the fixing holes 21 and positioning blocks do not interfere with each other, do not affect the insertion of the connecting rod 3, and ensure the structural strength of the segmented slots 2. For example, if the number of positioning slots that can be set on the end face of the pressing roller 5 and the space for setting them are limited, the positioning blocks can be set between adjacent fixing holes 21 to avoid occupying too much space, ensure a reliable connection between the pressing roller 5 and multiple engraving plates 4, so as to ensure reliable and accurate engraving and safe and reliable operation.

[0065] Based on any of the above embodiments, please refer to Figure 1 , Figure 2 The lettering plate 4 includes a body 41. One side of the body 41 is set to fit against the outer periphery of the pressing roller 5. The other side of the body 41 is provided with a number of engraving parts 42, which are protruding or recessed into the body 41.

[0066] The engraving section 42 includes symbols and / or text, such as simple blessings or pictures with auspicious meanings, without much restriction on the specifics.

[0067] One side of the body 41 is attached to the outer periphery of the pressing roller 5. When the engraving plate 4 is fixed to the pressing roller 5 by the annular fixing part 1 and the segmented slot 2, the body 41 of the engraving plate 4 can reliably fit with the outer periphery of the pressing roller 5, ensuring the reliable stability of the overall structure and the safety and reliability of the engraving.

[0068] On the other side of the main body 41, there are several engraving parts 42. The engraving parts 42 protrude or are recessed into the main body 41, but are not through-type structures, so as to avoid the situation where surface flakes enter the gaps and cause safety accidents when engraving.

[0069] In this embodiment, the engraving portion 42 is provided to protrude or be recessed in the body 41, and can be specifically processed by a mold to form an engraved surface that meets the user's needs.

[0070] Based on any of the above embodiments, please refer to Figure 1 Each lettering plate 4 has a foolproof part on at least one side along the axial direction. The foolproof part is used to prevent mistake when two adjacent lettering plates 4 are connected along the second direction. The font orientation on the lettering plates 4 should be the same. By setting the foolproof part, it can be ensured that two adjacent lettering plates 4 can be installed in the correct installation direction, ensuring the reliability and accuracy of subsequent lettering operations.

[0071] Specifically, the error prevention can be achieved by having different structures on both sides of the lettering plate 4 along the second direction. For example, if one side of the lettering plate 4 is raised and the other side is recessed, then the raised part of one of the two adjacent lettering plates 4 in the second direction is connected to the recess of the other to avoid the situation of being installed backwards.

[0072] It should be noted that the foolproof design of the two lettering plates 4 located at the edge of the multiple lettering plates 4 arranged along the second direction can be achieved by having them snapped into one side of the segmented slot 2 without modification, while the other side is provided with a raised or recessed form, depending on the application requirements. The second direction is as follows... Figure 1 The direction indicated by b.

[0073] Alternatively, the error prevention measures can be illustrated with pictures, such as indicating the front and back of the lettering to guide the user. In this case, the position of the pictures should not affect the normal production of the engraved surface, and no excessive restrictions should be imposed.

[0074] Based on any of the above embodiments, please refer to Figure 2 The engraving part 42 is detachably connected to the main body 41. The main body 41 has a mounting structure corresponding to each engraving part 42. The mounting structure can lock the engraving part 42 to the main body 41 or disconnect it from the main body 41. By making the engraving part 42 detachable, the form can be flexibly changed according to different user needs. Combined with the detachable connection between multiple engraving plates 4, the flexibility of adjusting the engraving form can be maximized.

[0075] In this embodiment, the mounting structure can lock the engraving part 42 onto the body 41. The specific locking method can be through fastening screws, bolts, stirrups, etc., and is not limited. The mounting structure needs to be inspected regularly to ensure the safety and reliability of engraving under long-term use and to avoid safety accidents.

[0076] Based on any of the above embodiments, please refer to Figure 1 , Figure 2 Several engraving parts 42 are integrally formed with the main body 41. This configuration ensures the reliable and stable operation of each engraving plate 4, preventing the engraving parts 42 from falling off and damaging the equipment or affecting the production process during engraving. It is suitable for engraving surface production on a large scale, ensuring the reliability and safety of engraving operations.

[0077] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0078] The engraving surface production device provided by this utility model has been described in detail above. Specific examples have been used to illustrate the principle and implementation of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core idea of ​​this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A lettering production device, characterized in that, include: An annular fastener (1) is used to fix the end of the pressing roller (5) located at the very end of the pressing path; The lettering plate (4) is detachably connected, and the lettering plate (4) is arranged along a first direction and / or a second direction, the first direction being the circumferential direction of the annular fastener (1) and the second direction being the axial direction of the annular fastener (1). Connecting rods (3), a plurality of the connecting rods (3) are arranged through at least two of the lettering plates (4) arranged along the second direction, and the ends of the plurality of the connecting rods (3) are all connected to the annular fixing member (1) so as to fix at least two of the lettering plates (4) to the outer periphery of the pressing roller (5).

2. The engraving surface production device according to claim 1, characterized in that, It also includes a segmented slot (2), one end of which is engaged with the engraving plate (4) located at the edge along the second direction, and the other end of which is engaged in the annular fixing member (1). The connecting rod (3) passes through the segmented slot (2) and can be fixed with the annular fixing member (1).

3. The engraving surface production device according to claim 2, characterized in that, The segmented slot (2) has a locking groove (22) on the side near the engraving plate (4), and the locking groove (22) engages with the edge of the engraving plate (4) to restrict radial movement.

4. The engraving surface production apparatus according to claim 3, characterized in that, Multiple segmented slots (2) are arranged circumferentially along the annular fastener (1), and the end faces of two adjacent segmented slots (2) are fitted together.

5. The engraving surface production apparatus according to claim 4, characterized in that, The segmented slot (2) includes at least two rings of fixing holes (21) arranged radially therein, one ring of the fixing holes (21) being used for fixed connection with the end face of the pressing roller (5), and the other rings of the fixing holes (21) being used for the connecting rod (3) to pass through so as to be fixedly connected with the annular fastener (1).

6. The engraving surface production apparatus according to claim 5, characterized in that, The segmented slot (2) includes several rings of fixing holes (21) arranged circumferentially, and the rings of fixing holes (21) are used for the connecting rod (3) to pass through so as to be fixedly connected with the annular fastener (1). The segmented slot (2) also includes several positioning blocks, which are used to cooperate with the positioning slots on the end face of the pressing roller (5) for positioning. The positioning block is located between two adjacent fixing holes (21), or the positioning block and the fixing hole (21) are radially distributed along the segmented slot (2).

7. The engraving surface production apparatus according to claim 1, characterized in that, The engraving plate (4) includes a body (41), one side of which is set to fit against the outer periphery of the pressing roller (5), and a plurality of engraving parts (42) are provided on one side of the body (41), the engraving parts (42) protruding or recessed in the body (41).

8. The engraving surface production apparatus according to claim 7, characterized in that, Each of the lettering plates (4) is provided with a foolproof part on at least one side along the axial direction, the foolproof part being used to prevent foolproofing when two adjacent lettering plates (4) are connected along the second direction.

9. The engraving surface production apparatus according to claim 8, characterized in that, The engraving part (42) is detachably connected to the body (41). The body (41) is provided with a mounting structure corresponding to each engraving part (42). The mounting structure can lock the engraving part (42) to the body (41) or disconnect it from the body (41).

10. The engraving surface production apparatus according to claim 8, characterized in that, Several of the engraved parts (42) are integrally formed with the body (41).