A bread surface coating device
By setting the bread conveyor belt and the auxiliary material conveyor belt in the same direction and parallel to each other, and by designing the receiving hopper, combined with the linkage control components, the problems of uneven bread sprinkling and insufficient adaptability are solved, and uniform sprinkling and precise control of the bread surface are achieved.
Patent Information
- Application Number
- CN202410895226.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-05
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2044-07-05
AI Technical Summary
Existing bread-spreading equipment suffers from uneven spreading and difficulty in controlling the amount of spreading, resulting in unstable bread quality and low adaptability to different quantities of bread being processed.
The bread conveyor belt and the auxiliary material conveyor belt are arranged in the same direction and parallel. Combined with the design of the receiving hopper, the auxiliary materials are evenly distributed through a linkage control component. The receiving hopper consists of a connecting ring, a transition bag, and a discharge head. It has elastic deformation properties and, together with the separators and magnets in the control trough, ensures the accuracy and flexibility of the material distribution.
It achieves uniform topping on the bread surface, reduces waste of auxiliary materials, improves bread quality and adaptability, and ensures the accuracy and uniformity of topping.
Smart Images

Figure CN118680190B_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of food spreading devices, and particularly relates to a bread surface layer spreading device. BACKGROUND
[0002] In the process of bread production, in order to improve the taste and appearance of the bread, various auxiliary materials such as sesame and sugar powder are usually needed to be spread on the surface of the bread. However, the existing spreading equipment often has problems such as uneven spreading and difficult control of the spreading amount, which leads to unstable bread quality and affects the eating experience of consumers. Therefore, how to design a bread surface layer spreading device capable of realizing uniform spreading and adjustable spreading amount has become a technical problem to be solved at present.
[0003] At present, most of the spreading devices on the market use a single spreading port for spreading, and the position of the spreading port is fixed. The adaptability to different quantities of processed bread is low. SUMMARY
[0004] In order to improve the defect that the prior art has low adaptability to different quantities of processed bread, the present application provides a bread surface layer spreading device.
[0005] The following technical scheme is adopted:
[0006] A bread surface layer spreading device, comprising a frame body, a bread conveying belt and an auxiliary material conveying belt, the bread conveying belt and the auxiliary material conveying belt are arranged in parallel and in the same direction on the frame body, the discharge end of the auxiliary material conveying belt corresponds to the middle position of the bread conveying belt, further comprising a receiving beam, a plurality of receiving hoppers and a linkage control assembly, the receiving beam is arranged below the frame body corresponding to the position of the discharge end, the receiving beam is vertically provided with a control groove along the length direction, a plurality of receiving hoppers are arranged in a line and detachably connected in the control groove, the receiving hoppers have elastic deformation properties, and the linkage control assembly is arranged on the receiving beam for controlling the simultaneous deformation of a plurality of receiving hoppers.
[0007] By adopting the above technical scheme, the parallel and same direction arrangement of the bread conveying belt and the auxiliary material conveying belt ensures that the auxiliary material can be accurately and quickly spread on the bread. The auxiliary material conveying belt is located above the bread conveying belt, so that the auxiliary material can naturally fall to the surface of the bread to form a uniform spreading layer. The design of the receiving hopper further ensures the uniformity of the spreading, and by adjusting the diameter of the receiving hopper, different sizes or quantities of bread can be adapted, reducing the waste of auxiliary materials.
[0008] Optionally, the receiving hopper comprises a connecting ring, a transition bag and a discharge head, the transition bag is a hollow conical structure, one end of the transition bag with a large diameter is wrapped around the outer circumferential side of the connecting ring, the other end extends downward and is connected to the discharge head, and the connecting ring has elastic deformation properties.
[0009] By adopting the technical scheme, the receiving hopper has a combined structure of the connecting ring, the transition bag and the discharge head, and has deformation ability. This design allows the receiving hopper to compress or stretch when needed to adapt to different numbers of breads.
[0010] Optionally, the connecting ring comprises two connecting arc rods and two deformation arc rods, the connecting arc rods and the deformation arc rods are alternately connected end to end to form a ring structure, and the deformation arc rods have elastic deformation properties.
[0011] By adopting the technical scheme, the connecting ring is composed of the connecting arc rods and the deformation arc rods, and the deformation arc rods have elastic deformation properties, so that the diameter of the receiving hopper can be adjusted as needed.
[0012] Optionally, a plurality of first partition pieces and a plurality of second partition pieces are slidingly connected in the control groove, one first partition piece and one second partition piece form a group, and the first partition piece and the second partition piece in each group leave a passage for the auxiliary materials to pass through.
[0013] By adopting the technical scheme, the first partition piece and the second partition piece are slidingly connected in the control groove, and the degree of deformation of the receiving hopper is accurately controlled. This design allows the operator to flexibly adjust the spacing and diameter of the receiving hopper according to the number and size of the breads.
[0014] Optionally, the first partition piece and the second partition piece of adjacent groups abut, and the first partition piece is provided with a magnet for attracting the second partition piece.
[0015] By adopting the technical scheme, the magnet attraction design between the first partition piece and the second partition piece ensures the stable connection between the partition pieces and prevents leakage of the auxiliary materials during the scattering process.
[0016] Optionally, the first partition piece and the second partition piece in the same group are connected to the corresponding connecting arc rod in the same connecting ring at the bottom.
[0017] Optionally, one end of the control groove penetrates the receiving beam to form an opening for the first partition piece and the second partition piece to slide horizontally into the control groove.
[0018] By adopting the opening design at one end of the control groove, the operator can conveniently install and disassemble the first partition piece and the second partition piece, and the maintenance convenience of the equipment is improved.
[0019] Optionally, a baffle is detachably connected to the opening in the vertical direction of the length of the control groove.
[0020] Optionally, the linkage control assembly comprises a connecting frame, a plurality of connecting rods, a plurality of first supporting rods and a plurality of second supporting rods, the connecting frame is arranged along the length direction of the receiving beam, one end of the first partition plate and the second partition plate is connected to the corresponding connecting rod through a connecting rod, the receiving beam is provided with a connecting groove for sliding the connecting rod, the connecting rod is provided with a sliding groove along the length direction, two sliding blocks are slidingly connected in the sliding groove, the first supporting rod and the second supporting rod in each group correspond to the grouping of the first partition plate and the second partition plate, the middle part of the first supporting rod and the second supporting rod in each group is hingedly connected to form an X-shaped structure, the two ends of the first supporting rod in each group are rotatably connected to the sliding blocks on different connecting rods, the abutting connecting rods are provided with a linkage groove on the side close to each other, the sliding block is provided with a magnetic block which can slide in the linkage groove, and the sliding blocks are connected through the magnetic blocks.
[0021] By adopting the above technical scheme, the linkage control assembly realizes accurate synchronous control of a plurality of receiving hoppers through the cooperation of the connecting frame, the connecting rod, the first supporting rod and the second supporting rod. The arrangement of the connecting frame and the connecting rod allows the operator to conveniently adjust the positions and distances of the partition plates and the receiving hoppers, improving the flexibility and adaptability of the equipment. The X-shaped structure design of the first supporting rod and the second supporting rod realizes accurate control of the receiving hoppers through the sliding connection of the sliding blocks and the magnetic blocks in the linkage groove, further improving the accuracy and uniformity of the material spreading.
[0022] Optionally, the linkage control assembly further comprises a bidirectional screw rod, a driving member and two sliding rods, the driving member is arranged at one end of the connecting frame, the output end of the driving member is connected to the bidirectional screw rod, the bidirectional screw rod penetrates one end of the two sliding rods and is threadedly connected with the screw rod, and the other end of the sliding rod penetrates the adjacent linkage groove and is connected to the corresponding sliding block.
[0023] In summary, the present application has at least one of the following beneficial effects:
[0024] 1. By arranging the bread conveying belt and the auxiliary material conveying belt in the same direction and parallel, and designing the receiving hopper, the bread can be automatically and uniformly spread during the conveying process, so that each bread can be evenly covered with auxiliary materials, improving the overall quality and taste of the bread;
[0025] 2. The receiving hopper is composed of a connecting ring, a transition bag and a discharge head, wherein the elastic deformation property of the connecting ring makes the width adjustment of the receiving hopper more flexible, and the width of the receiving hopper can be adjusted according to the number of different breads to increase or decrease the receiving hopper;
[0026] 3. By designing the first partition plate and the second partition plate in the control groove and combining with the magnet adsorption, the separation and passage control of the auxiliary materials in the receiving hopper are realized, ensuring the accuracy of the material spreading;
[0027] 4. The linkage control assembly adopts X-shaped structure and bidirectional screw driving, and realizes synchronous control of the width of the receiving hopper through sliding connection of the sliding block and the magnetic block in the linkage groove. BRIEF DESCRIPTION OF DRAWINGS
[0028] Figure 1 is a schematic diagram of the overall structure of the embodiment;
[0029] Figure 2 is a schematic diagram of the cross-sectional structure of the embodiment;
[0030] Figure 3 is a schematic diagram of the structure of the receiving beam and the receiving hopper;
[0031] Figure 4 is a schematic diagram of the top view structure of the receiving hopper;
[0032] Figure 5 is a schematic diagram of the cross-sectional structure of the receiving beam and the receiving hopper;
[0033] Figure 6 is a schematic diagram of the top view structure of the receiving beam;
[0034] Figure 7 is a schematic diagram of the cross-sectional structure of the linkage control assembly;
[0035] Figure 8 is a schematic diagram of the enlarged structure at A.
[0036] BRIEF DESCRIPTION OF DRAWINGS 1. frame; 2. bread conveyor belt; 3. auxiliary material conveyor belt; 31. discharge end; 32. feeding end; 33. feeding hopper; 331. valve; 4. receiving hopper; 41. connecting ring; 411. connecting arc rod; 412. deformation arc rod; 42. transition bag; 43. discharge head; 5. receiving beam; 51. control groove; 511. opening; 512. groove; 513. limiting groove; 514. connecting groove; 52. first partition piece; 53. second partition piece; 531. chamfer; 532. limiting block; 533. connecting rod; 54. baffle; 541. protrusion; 6. linkage control assembly; 61. connecting frame; 62. connecting rod; 621. sliding groove; 622. linkage groove; 63. sliding block; 631. magnetic block; 64. first supporting rod; 65. second supporting rod; 66. bidirectional screw rod; 67. driving member; 68. sliding rod. DETAILED DESCRIPTION
[0037] The following will be described in detail with reference to the accompanying drawings. Figure 1 to the accompanying drawings Figure 8 The present application will be further described in detail.
[0038] Reference will be made to Figure 1 and Figure 2This application discloses a bread surface sprinkling device (hereinafter referred to as the sprinkling device), including a frame 1, a bread conveyor belt 2, and an auxiliary material conveyor belt 3. The bread conveyor belt 2 and the auxiliary material conveyor belt 3 are arranged parallel to each other and in the same direction on the frame 1. The auxiliary material conveyor belt 3 is located above the bread conveyor belt 2. The auxiliary material conveyor belt 3 includes a discharge end 31 and a loading end 32. The discharge end 31 is the end of the auxiliary material conveyor belt 3 that is conveyed in the forward direction. On the vertical projection plane, the discharge end 31 is located between the middle and the end of the bread conveyor belt 2. The loading end 32 is used to transport the auxiliary materials to the auxiliary material conveyor belt 3. After the auxiliary materials are transported to the discharge end 31 by the auxiliary material conveyor belt 3, they fall under the action of gravity; the bread is transported by the bread conveyor belt 2 to the position where the auxiliary materials fall, so that the auxiliary materials are sprinkled on the surface of the bread; the bread conveyor belt 2 continues to send the bread to the next process. The feeding end 32 is also equipped with a feeding hopper 33, and a valve 331 for controlling the amount of material to be sprinkled is provided at the outlet of the feeding hopper 33. Since the structure of the valve 331 is existing technology, it will not be described in detail here.
[0039] Reference Figure 2 and Figure 3 Furthermore, during operation of the spreading device, the auxiliary materials need to be evenly spread on the auxiliary material conveyor belt 3, while the bread is arranged in an intermittent array on the bread conveyor belt 2. When the auxiliary materials fall from above onto the bread, some of them will fall between the bread pieces, resulting in waste. Therefore, to reduce waste, the spreading device also includes several receiving hoppers 4 and receiving beams 5. The receiving beams 5 are horizontally positioned below the discharge end 31. The receiving beams 5 are connected to the frame 1. A control groove 51 is formed along the length of the receiving beams 5, and the control groove 51 vertically penetrates the receiving beams 5. Several receiving hoppers 4 are adjacent to each other and arranged in a straight line at the bottom of the control groove 51. The openings 511 of the receiving hoppers 4 face the auxiliary material conveyor belt 3, and the outlets face the bread conveyor belt 2. The number and position of the receiving hoppers 4 correspond to the bread pieces. The receiving hoppers 4 and the receiving beams 5 are detachably connected, and the receiving hoppers 4 are deformable; the diameter of the receiving hoppers 4 along the length of the control groove 51 can be compressed or stretched. Since several receiving hoppers 4 are adjacent to each other and all have the same diameter, when several receiving hoppers 4 are compressed, the control groove 51 leaves a gap to supplement the receiving hoppers 4, thereby increasing the number of receiving hoppers 4 to accommodate more bread. Conversely, the edge receiving hoppers 4 are removed and the diameter of the remaining receiving hoppers 4 is stretched so that the remaining receiving hoppers 4 can cover the bottom of the control groove 51 to prevent the auxiliary materials from leaking.
[0040] Reference Figure 3 and Figure 4Further, the receiving hopper 4 comprises a connecting ring 41, a transition bag 42 and a discharge head 43. The connecting ring 41 comprises connecting arc rods 411 and deformation arc rods 412. The connecting arc rods 411 are arranged vertically along the length direction of the control groove 51, and two connecting arc rods 411 are symmetrically arranged with the diameter of the connecting ring 41 as the reference. The deformation arc rods 412 are arranged in pairs, and the deformation arc rods 412 are arranged parallel to the length direction of the control groove 51, and the deformation arc rods 412 are symmetrically arranged with the diameter of the connecting ring 41 as the reference. One end of the deformation arc rod 412 is rotatably connected to one end of the connecting arc rod 411, and the other end is rotatably connected to one end of the adjacent connecting arc rod 411. The deformation arc rod 412 and the connecting arc rod 411 are connected end to end to form a ring-like structure. The deformation arc rod 412 has a deformation capacity, and the deformation arc rod 412 has an elastic capacity to restore the initial state. The deformation arc rod 412 is preferably made of high-strength polyethylene material or synthetic metal material with high toughness. In other embodiments, the number of connecting arc rods 411 and deformation arc rods 412 is not limited, and the connecting arc rods 411 and deformation arc rods 412 are connected end to end to form a ring-like structure. The transition bag 42 is a hollow conical structure, and the transition bag 42 is made of cloth, flexible plastic or high-strength paper material. One end of the transition bag 42 with a large diameter is wrapped around the outer circumferential side of the connecting ring 41, and the other end of the transition bag 42 with a small diameter extends towards the bread conveyor belt 2 and is connected to the discharge head 43. The hollow conical structure of the transition bag 42 and the hollow design of the discharge head 43 ensure that the auxiliary materials can smoothly and stably flow out and maintain an appropriate posture. The discharge head 43 is a hollow structure, which is generally made of metal material. The discharge head 43 is used to maintain the posture of the auxiliary materials when flowing out.
[0041] Referring to Figure 3 and Figure 5 Further, a plurality of first partition plates 52 and a plurality of second partition plates 53 are slidably connected in the control groove 51. The first partition plate 52 and the second partition plate 53 are arranged vertically along the length direction of the control groove 51. One first partition plate 52 and one second partition plate 53 form a group, and the first partition plate 52 and the second partition plate 53 in each group are arranged in parallel. The first partition plate 52 and the second partition plate 53 in each group leave a passage for the auxiliary materials to pass through. The first partition plate 52 is provided with a magnet on the side away from the second partition plate 53 in the same group, and the first partition plate 52 is attracted to the second partition plate 53 in the adjacent group by the magnet. The bottom of the first partition plate 52 and the second partition plate 53 in the same group is connected to the corresponding connecting arc rod 411 in the same connecting ring 41. The relative position between the first partition plate 52 and the second partition plate 53 affects the deformation degree of the deformation arc rod 412, and further affects the width of the connecting ring 41. The first partition plate 52 and the second partition plate 53 are both provided with a chamfer 531 at one end close to the auxiliary material conveyor belt 3, and the chamfers 531 of the two are inclined towards the gap between them. Thus, the auxiliary materials are guided to enter between the first partition plate 52 and the second partition plate 53 in the same group, and enter the receiving hopper 4.
[0042] With reference to Figure 3 and Figure 6 Further, the control groove 51 is formed with an opening 511 at one end of the control groove 51 for the first and second partition plates 52 and 53 to slide horizontally into the control groove 51. The opening 511 is provided with a baffle 54 along the length direction of the control groove 51. When the first and second partition plates 52 and 53 are inserted into the control groove 51, the baffle 54 blocks the opening 511 to form a closed control groove 51.
[0043] With reference to Figure 3 and Figure 6 Further, two grooves 512 are formed in the inner wall of the opening 511 along the length direction of the control groove 51, and the baffle 54 is provided with a protrusion 541 on both sides which can be inserted into the grooves 512 from top to bottom. The protrusion 541 is dovetail-shaped in cross section, and the grooves 512 are correspondingly shaped. The dovetail-shaped fitting can provide the baffle 54 with a certain degree of support for the side walls of the receiving beam 5, thereby enhancing the structural strength of the baffle 54 and the receiving beam 5.
[0044] With reference to Figure 6 Further, a limiting groove 513 is formed in the inner wall of the control groove 51 along the length direction, and the first and second partition plates 52 and 53 are provided with a limiting block 532 on one side which can slide in the limiting groove 513.
[0045] With reference to Figure 7 and Figure 8Furthermore, to enhance the ease of operation of the first partitions 52 and the second partitions 53, the material spreading device also includes a linkage control assembly 6. The linkage control assembly 6 includes a connecting frame 61, several connecting rods 62, several first support rods 64, and several second support rods 65. The connecting frame 61 is located on one side of the supporting beam 5 and extends along the length of the supporting beam 5. One end of each of the first partitions 52 and the second partition 53 is connected to a connecting rod 62 via a connecting rod. A connecting groove 514 is formed through the outer wall of the supporting beam 5 to allow the connecting rod to slide. The connecting rods 62 are vertically arranged and slidably connected to the connecting frame 61. A sliding groove 621 is formed along the length of the connecting rod 62, and the sliding groove 621 has a convex cross-section. Two sliders 63 are slidably connected in the sliding groove 621, the shape of which corresponds to the shape of the cross-section of the sliding groove 621. The two sliders 63 move towards or away from each other. A first support rod 64 and a second support rod 65 form a group, corresponding to the grouping of the first separator 52 and the second separator 53. The first support rod 64 and the second support rod 65 in each group are hinged at the middle to form an X-shaped structure. The two ends of the first support rod 64 in each group are rotatably connected to sliders 63 on different connecting rods 62. The connecting rods 62 that abut each other have a linkage groove 622 on their abutting side. The sliders 63 are provided with magnetic blocks 631 that can slide in the linkage groove 622. The corresponding sliders 63 are connected through the magnetic blocks 631, so that they move synchronously.
[0046] Reference Figure 7 and Figure 8 The linkage control component 6 also includes a bidirectional screw 66, a drive element 67, and two slide rods 68. The drive element 67 is located at one end of the connecting frame 61. The drive element 67 is a motor, which can be operated manually in other embodiments. The output end of the drive element 67 is connected to the bidirectional screw 66, which passes through one end of the two slide rods 68 and is threadedly connected to the screw. The other end of the slide rod 68 passes through the adjacent linkage groove 622 and is connected to the corresponding slider 63.
[0047] The implementation principle of a bread surface coating device according to an embodiment of this application is as follows:
[0048] Depending on the type and quantity of bread to be topped, the positions of the first separator 52 and the second separator 53 are adjusted via the linkage control component 6. The slider 63 slides within the groove 621 of the connecting rod 62, causing the X-shaped structure of the first support rod 64 and the second support rod 65 to open and close, thereby moving the first separator 52 and the second separator 53. This movement of the separators alters the deformation of the receiving hopper 4. This allows space to be created in the control groove 51 for installing more receiving hoppers 4, or for filling the space within the control groove 51 after removing the receiving hoppers 4.
[0049] The above are all preferred embodiments of the present application, and do not limit the protection scope of the present application, so that: all equivalent changes made according to the structure, shape, principle of the present application should be covered in the protection scope of the present application.
Claims
1. A bread topping applicator characterized by: The utility model relates to a bread auxiliary material conveying device, including frame (1), bread conveying belt (2) and auxiliary material conveying belt (3), bread conveying belt (2) and auxiliary material conveying belt (3) are in parallel and same direction and are set up on frame (1), the discharge end (31) of auxiliary material conveying belt (3) corresponds the middle position of bread conveying belt (2), characterized by: still include the receiving beam (5), a plurality of receiving hopper (4) and linkage control component (6), the receiving beam (5) is set up below frame (1) corresponding the position of discharge end (31), the control groove (51) is vertically opened in the length direction through the receiving beam (5), a plurality of receiving hopper (4) are in a straight line and detachably connected in control groove (51), receiving hopper (4) has the elastic deformation nature, linkage control component (6) is set up on the receiving beam (5) for controlling a plurality of receiving hopper (4) deformation simultaneously, The receiving hopper (4) includes a connecting ring (41), a transition bag (42), and a discharge head (43). The transition bag (42) is a hollow conical structure, with one end of the large diameter wrapped around the outer periphery of the connecting ring (41), and the other end extending downward and connected to the discharge head (43). The connecting ring (41) has elastic deformation properties.
2. A bread topping applicator according to claim 1, wherein: The connecting ring (41) includes two connecting arc rods (411) and two deformation arc rods (412). The connecting arc rods (411) and the deformation arc rods (412) are alternately connected end to end to form a ring structure. The deformation arc rods (412) have elastic deformation properties.
3. A bread topping applicator according to claim 2, wherein: The control groove (51) has a plurality of first separation pieces (52) and a plurality of second separation pieces (53) slidingly connected therein. One first separation piece (52) and one second separation piece (53) form a group. The first separation piece (52) and the second separation piece (53) in each group have a passage for auxiliary materials to pass through.
4. A bread topping applicator according to claim 3, wherein: The first separation piece (52) and the second separation piece (53) of adjacent groups abut each other, and the first separation piece (52) is provided with a magnet that attracts the second separation piece (53).
5. A bread topping applicator according to claim 4, wherein: The first separation piece (52) and the second separation piece (53) in the same group are connected at the bottom to the corresponding connecting arc rod (411) in the same connecting ring (41).
6. A bread topping applicator according to claim 5, wherein: One end of the control groove (51) penetrates the receiving beam (5) to form an opening (511) for the first separation piece (52) and the second separation piece (53) to slide horizontally into the control groove (51).
7. A bread topping applicator according to claim 6, wherein: A baffle (54) is detachably connected at the opening (511) perpendicular to the length direction of the control groove (51).
8. A bread topping applicator according to claim 7, wherein: The linkage control assembly (6) comprises a connecting frame (61), a plurality of connecting rods (62), a plurality of first supporting rods (64) and a plurality of second supporting rods (65), the connecting frame (61) is arranged along the length direction of the receiving beam (5), one end of the first partition plate (52) and the second partition plate (53) is connected to the corresponding connecting rod (62) through a connecting rod, the receiving beam (5) is provided with a connecting groove (514) for sliding the connecting rod, the connecting rod (62) is provided with a sliding groove (621) along the length direction, two sliding blocks (63) are slidingly connected in the sliding groove (621), the first supporting rod (64) and the second supporting rod (65) are grouped and correspond to the grouping of the first partition plate (52) and the second partition plate (53), the middle part of the first supporting rod (64) and the second supporting rod (65) in each group is hingedly connected to form an X-shaped structure, the two ends of the first supporting rod (64) in each group are rotatably connected to the sliding blocks (63) on different connecting rods (62), the abutting connecting rods (62) are provided with a linkage groove (622) on the side close to each other, the sliding block (63) is provided with a magnetic block (631) which can slide in the linkage groove (622), and the sliding blocks (63) are connected through the magnetic blocks (631).
9. A bread topping applicator according to claim 8, wherein: The linkage control assembly (6) further comprises a bidirectional screw rod (66), a driving member (67) and two sliding rods (68), the driving member (67) is arranged at one end of the connecting frame (61), the output end of the driving member (67) is connected to the bidirectional screw rod (66), the bidirectional screw rod (66) penetrates one end of the two sliding rods (68), and the bidirectional screw rod (66) is threadedly connected with the screw rod, the other end of the sliding rod (68) penetrates the adjacent linkage groove (622) and is connected to the corresponding sliding block (63).
Citation Information
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