Tire mold with pattern modules convenient to disassemble and assemble

Abstract

The utility model provides a tire mold with a pattern module convenient to disassemble and assemble, which relates to the technical field of tire molds and comprises a main body frame, a pattern fixing ring is embedded in the main body frame, and a plurality of pattern convex molds are formed on the inner wall of the pattern fixing ring. The two ends of the main body frame are detachably connected with side edge templates respectively, a fastening assembly is arranged on the arc surface of the main body frame and comprises two limiting grooves which are symmetrically formed, inserting plates are arranged in the limiting grooves in a sliding fit mode, and fixing holes are formed in the positions, corresponding to the inserting plates, of the pattern fixing rings. The inserting plate is in inserting fit with the fixing hole, and the end, close to the bottom of the limiting groove, of the inserting plate is fixedly connected with a connecting and fixing plate. By means of the fastening assembly, the effect that a worker can conveniently mount and dismount the pattern fixing ring is achieved, and then the worker can conveniently replace the pattern fixing ring when different patterns need to be used for machining a tire.

Description

Technical Field

[0001] This utility model relates to the field of tire mold technology, and in particular to a tire mold with a tread pattern module that is easy to assemble and disassemble. Background Technology

[0002] Tire molds are the core tooling for forming tread patterns in the tire production process, and their structural design directly affects tire performance and production efficiency. In the tire manufacturing industry, the diverse requirements for tread patterns (such as anti-skid patterns for different vehicle models and wear-resistant patterns for heavy-duty tires) necessitate that molds have flexible pattern changing capabilities.

[0003] The main drawback of existing technology is that the tread pattern module is fixed and cannot be disassembled: The tread pattern structure of traditional tire molds is usually fixed inside the mold body by embedding or integral molding. When it is necessary to change different patterns, the entire mold must be disassembled and the entire tread pattern component must be replaced. The operation process is cumbersome and a single replacement takes 2-4 hours, which seriously affects production efficiency. Utility Model Content

[0004] This utility model proposes a tire mold with an easily detachable pattern module to overcome the shortcomings of existing technologies.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a tire mold with a tread pattern module that is easy to assemble and disassemble, comprising a main frame, characterized in that: a tread pattern fixing ring is embedded inside the main frame, and a plurality of tread pattern protrusions are formed on the inner wall of the tread pattern fixing ring.

[0006] The two ends of the main frame are respectively detachably connected to side templates;

[0007] The main frame has a fastening component on its arc surface. The fastening component includes two symmetrically arranged limiting grooves. An insertion plate is slidably fitted in the limiting groove. The patterned fixing ring has a fixing hole at the position corresponding to the insertion plate. The insertion plate is inserted into the fixing hole.

[0008] A connecting plate is fixedly connected to one end of the insertion plate near the bottom of the limiting groove. A return spring is provided between the connecting plate and the bottom of the limiting groove. The two ends of the return spring are fixedly connected to the connecting plate and the support pad, respectively. The support pad is fixed to the inner wall of the limiting groove.

[0009] The aforementioned components achieve the following effect: When it is necessary to fix the tread pattern retaining ring, the worker first moves the tread pattern retaining ring, inserting it into the interior of the main frame. Then, the worker moves the connecting fixing plate, which moves the insertion plate along with it. The return spring on the support plate retracts. When the fixing hole on the tread pattern retaining ring moves to the position of the insertion plate, the worker releases the connecting fixing plate. Under the action of the return spring's return force, the insertion plate inserts into the fixing hole of the tread pattern retaining ring, thus achieving the effect of fixing the tread pattern retaining ring. The fastening components facilitate the worker's installation and removal of the tread pattern retaining ring, thereby making it convenient for the worker to replace the tread pattern retaining ring when different tread patterns are needed for tire processing.

[0010] Preferably, the connecting fixing plate is fixed with an operating handle on one side exposed to the main frame. The operating handle is circular and protrudes from the surface of the main frame. The end of the insertion plate away from the connecting fixing plate is formed with a guide tip, and the axis of the guide tip is consistent with the sliding direction of the insertion plate.

[0011] The above components achieve the following effects: by setting an operating handle, the connecting fixing plate can be moved easily by the staff, bringing convenience to the staff; by setting a guide tip, the insert plate can be inserted into the fixing hole of the pattern fixing ring, bringing convenience to the staff.

[0012] Preferably, the arc surface of the patterned fixing ring is fixed with symmetrically distributed sliding guide plates, and the inner wall of the main frame is provided with a corresponding sliding track. The sliding guide plates and the sliding track form a T-groove sliding fit structure.

[0013] The effect achieved by the above components is that by moving the sliding guide plate in the sliding track, the movement direction of the pattern fixing ring is restricted, thus preventing misalignment between the fixing hole on the pattern fixing ring and the insertion plate.

[0014] Preferably, four positioning posts are fixed at both ends of the main frame, and positioning slots are provided on the side templates corresponding to the positioning posts, and the positioning posts and positioning slots are inserted into each other.

[0015] A rectangular mounting plate is fixed on the side of the side template facing the positioning slot. An elastic spring is provided between the rectangular mounting plate and the snap plate. The elastic restoring force of the elastic spring drives the snap plate to embed into the snap groove of the positioning post. The snap plate has a trapezoidal cross section and forms a wedge-tight fit with the snap groove.

[0016] The effect achieved by the above components is as follows: When the side template needs to be installed, the worker moves the side template and aligns the positioning slot on the side template with the positioning post of the main frame. The positioning post is inserted into the positioning slot, and the positioning post presses against the inclined surface of the buckle plate. The buckle plate moves towards the rectangular mounting plate, and the elastic spring retracts. When the engaging groove on the positioning post moves to the position of the buckle plate, under the action of the elastic spring's return force, the buckle plate is inserted into the engaging groove of the positioning post, thus achieving the effect of fixing the side template. The auxiliary positioning component achieves the effect of fixing the side template and prevents the side template from becoming loose from the main frame.

[0017] Preferably, the rectangular mounting plate is provided with a limiting guide rod, one end of which is fixedly connected to the buckle plate, and the other end extends to the outside of the rectangular mounting plate and is provided with a limiting boss.

[0018] The effect achieved by the above components is that by setting the limiting guide rod, the movement direction of the buckle plate is restricted, thereby improving the stability of the buckle plate movement.

[0019] Preferably, a lifting plate is fixed on the upper surface of the buckle plate, and the surface of the lifting plate is provided with a grid-like anti-slip texture, the depth of which is 0.3-0.5mm.

[0020] The effect achieved by the above components is to increase the friction between the worker's hand and the buckle plate by setting up the lifting plate, making it easier for the worker to move the buckle plate.

[0021] In summary, the beneficial effects of this utility model are as follows:

[0022] When it is necessary to fix the tread pattern retaining ring, the worker first moves the tread pattern retaining ring, inserting it into the interior of the main frame. Then, the worker moves the connecting fixing plate, which moves the insertion plate along with it. The return spring on the support plate retracts. When the fixing hole on the tread pattern retaining ring moves to the position of the insertion plate, the worker releases the connecting fixing plate. Under the action of the return spring's return force, the insertion plate inserts into the fixing hole of the tread pattern retaining ring, thus achieving the effect of fixing the tread pattern retaining ring. The fastening assembly facilitates the worker's installation and removal of the tread pattern retaining ring, making it convenient to replace the tread pattern retaining ring when different tread patterns are needed for tire processing. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0024] Figure 2 This utility model Figure 1 Exploded view;

[0025] Figure 3 This is a three-dimensional structural diagram of the mold body of this utility model;

[0026] Figure 4 This is a three-dimensional structural diagram of the guide tip of this utility model;

[0027] Figure 5 This is a three-dimensional structural diagram of the side template of this utility model;

[0028] Figure 6 This utility model Figure 5 Enlarged view of point A.

[0029] Legend: 1. Main frame; 2. Fastening components; 21. Limiting groove; 22. Insertion plate; 23. Fixing hole; 24. Connecting fixing plate; 25. Return spring; 26. Support pad; 27. Operating handle; 28. Guide tip; 29. ​​Sliding guide plate; 210. Sliding rail; 3. Auxiliary positioning components; 31. Positioning post; 32. Positioning slot; 33. Rectangular mounting plate; 34. Elastic snap ring; 35. Buckle plate; 36. Engaging groove; 37. Limiting guide rod; 38. Lifting plate; 4. Side template; 5. Patterned fixing ring. Detailed Implementation

[0030] Reference Figure 1-6 As shown, this embodiment discloses a tire mold with an easily detachable tread pattern module, mainly composed of a main frame 1, a tread pattern fixing ring 5, a side template 4, a fastening component 2, and an auxiliary positioning component 3. The tread pattern fixing ring 5, as a detachable tread pattern module, is elastically connected and fixed to the main frame 1 via the fastening component 2; the side template 4 achieves quick installation and anti-loosening locking through the auxiliary positioning component 3, and the overall structure meets diverse tread pattern replacement needs.

[0031] The main frame 1 is circular in shape, with a cylindrical cavity inside. The diameter of the cavity and the outer diameter of the patterned fixing ring 5 have a tolerance of ±0.05mm to ensure the interference fit accuracy. Two limiting grooves 21 are symmetrically opened on the arc surface along the circumference. The depth of the limiting groove is 15-20mm, and the width is compatible with the insertion plate 22 with a tolerance of ±0.1mm. A support pad 26 is fixed at the bottom of the groove.

[0032] The patterned retaining ring 5 is made of H13 hot work die steel. The inner wall is formed with several patterned punches such as longitudinal drainage patterns and transverse anti-slip patterns by electrical discharge machining. Different patterns of retaining rings can be replaced according to the tire model. Two symmetrical sliding guide plates 29 are fixed on the arc surface. The cross section of the guide plate is T-shaped and forms a sliding fit with the sliding track 210 T-groove on the inner wall of the main frame 1. The length of the guide plate is 1 / 2 of the axial length of the patterned retaining ring to ensure the guiding accuracy when inserting.

[0033] The length of the insertion plate 22 is 1.2 times the depth of the limiting groove 21. One end is machined with a guide tip 28 with a cone angle of 30°, and the other end is welded and fixed to the connecting fixing plate 24. The fitting clearance between the insertion plate and the fixing hole 23 is 0.02-0.05mm to ensure the positioning accuracy after insertion.

[0034] The return spring 25 is made of 65Mn spring steel with an elastic coefficient of 8-12N / mm. Its two ends are fixed to the connecting fixing plate 24 and the support pad 26 respectively by countersunk screws.

[0035] The operating handle 27 is a ring-shaped structure with an outer diameter of φ20mm and a knurled surface, making it easy to pull the connecting fixing plate 24 with one hand.

[0036] The main frame has four positioning posts with a diameter of φ12mm at each end, arranged in a rectangular array; the side template 4 has corresponding positioning slots with a depth of 20mm, and the inner wall of the slot has a chamfer angle of 45° to facilitate quick alignment.

[0037] The buckle plate 35 has an isosceles trapezoidal cross section with an upper base of 8mm, a lower base of 12mm, and a height of 10mm, with a slope angle of 45°, which is wedge-fitted with the snap-fit ​​groove 36 trapezoidal groove of the positioning post 31.

[0038] The elastic snap ring 34 uses a helical compression spring with a free length of 30mm and a pre-compression of 5mm after installation, providing a locking force of not less than 100N.

[0039] The guide rod 37 passes through the guide hole with a diameter of φ5mm through the rectangular mounting plate 33, and the end of the rod is provided with a φ8mm limiting boss to prevent the buckle plate 35 from falling off.

[0040] The lifting plate 38 is an L-shaped plate with a milled grid-like anti-slip texture on the upper surface. The texture is 0.4mm deep and 2mm apart, making it easy to hook and pull with your fingers.

[0041] Operating procedures and working principles:

[0042] Pattern retaining ring replacement process: Disassembly steps: Pull the operating handle 27 to overcome the elastic force of the return spring 25, so that the insertion plate 22 completely exits the fixing hole 23; take out the old pattern retaining ring 5 along the sliding rail 210 axially, and the sliding guide plate 29 separates from the main frame 1 along the rail.

[0043] Installation steps: Align the sliding guide plate 29 of the new patterned fixing ring 5 with the sliding rail 210, and push it into the inner cavity of the main frame 1 at a uniform speed until the fixing hole 23 is aligned with the limiting groove 21; release the operating handle 27, the reset spring 25 pushes the connecting fixing plate 24, and the insertion plate 22 is precisely inserted into the fixing hole 23 under the guidance of the guide tip 28 to complete the locking.

[0044] Side template installation process: Alignment and positioning: Align the positioning slot 32 of the side template 4 with the positioning post 31, and gently push the template along the axis. The inclined surface of the positioning post presses against the buckle plate 35, compressing the elastic spring 34. The buckle plate 35 retracts into the rectangular mounting plate 33.

[0045] Automatic locking: When the locking groove 36 of the positioning post 31 moves to the position of the buckle plate 35, the elastic snap spring 34 resets and pushes the buckle plate 35 into the locking groove 36 to form a mechanical lock; at this time, the limit guide rod 37 moves synchronously along the guide hole to ensure that the buckle plate moves without deviation.

[0046] Disassembly procedure: Pull the lifting plate 38 upward to overcome the elastic force of the spring clip 34, move the buckle plate 35 out of the engagement groove 36, and then remove the side template 4.

[0047] The main frame 1 and the patterned fixing ring 5 are made of forged blanks, which are heat-treated to a hardness of HRC30-35 and then machined to ensure structural strength.

[0048] The precision structures such as the sliding track 210 and the limiting groove 21 are machined by CNC milling, with a surface roughness Ra≤1.6μm.

[0049] All spring components undergo surface blackening treatment, and their corrosion resistance meets the requirements of GB / T15519-2020 standard.

[0050] Working principle: Installation and fixing process of patterned retaining ring 5: When it is necessary to fix the patterned retaining ring 5, the operator shall perform the following operations:

[0051] Pre-positioning operation: First, move the patterned fixing ring 5 along the axial direction of the main frame 1 and insert it into the internal cavity of the main frame 1. At this time, the sliding guide plate 29 on the arc surface of the patterned fixing ring 5 is simultaneously embedded into the sliding track 210 of the main frame 1, and the movement direction is precisely guided by the T-slot.

[0052] Operation of fastening component 2: The operator holds the operating handle 27, which has a circular structure with knurled surface, and applies a pulling force to move the connecting fixing plate 24 outward. Simultaneously, the connecting fixing plate 24 pulls the insertion plate 22 to slide along the limiting groove 21, compressing the return spring 25 on the support pad 26 with an elastic coefficient of 8-12 N / mm.

[0053] Automatic locking: When the patterned fixing ring 5 moves to the preset position and its fixing hole 23 is aligned with the insertion plate 22, the operating handle 27 is released, and the reset spring 25 pushes the connecting fixing plate 24 to reset under the action of elastic force. The insertion plate 22 is quickly inserted into the fixing hole 23 with the help of the guide tip 28 at the front end with a cone angle of 30°, forming an elastic insertion lock.

[0054] Technical effect: Through the guiding cooperation of the sliding guide plate 29 and the sliding rail 210, the alignment error between the fixing hole 23 and the insertion plate 22 is ≤0.1mm, and the installation time is <15 seconds, realizing one-handed quick fixing with "one push and one release".

[0055] Side template 4 installation and fixing process: When it is necessary to install side template 4, the staff shall perform the following operations:

[0056] Positioning and Alignment: Hold the side template 4 and align its positioning slot 32 with the positioning post 31 at the end of the main frame 1 with a diameter of φ12mm and a surface chamfer of 45°. Gently push the template along the axis and the positioning post 31 will be inserted into the positioning slot 32.

[0057] Elastic engagement: The inclined surface at the front end of the positioning post 31 presses against the trapezoidal section of the buckle plate 35 at an angle of 45°, forcing the buckle plate 35 to move toward the rectangular mounting plate 33, compressing the elastic spring 34 by a pre-compression of 5mm and an elastic force of 100N; when the engagement groove 36 of the positioning post 31 moves to directly below the buckle plate 35, the elastic spring 34 resets, pushing the buckle plate 35 into the engagement groove 36, forming a wedge-locked connection.

[0058] Limiting and guiding: During the movement of the buckle plate 35, the limiting guide rod 37 slides synchronously along the guide hole diameter φ5mm of the rectangular mounting plate 33. The swing offset of the buckle plate 35 is limited by the limiting boss diameter φ8mm at the end of the rod, ensuring the engagement accuracy.

[0059] Technical effect: The pre-positioning of the positioning post 31 and the positioning slot 32, combined with the automatic locking of the elastic snap ring 34, enables the "blind insertion" quick installation of the side template 4.

Claims

1. A tire mold with easily detachable tread pattern modules, comprising a main frame (1), characterized in that: The main frame (1) is fitted with a patterned fixing ring (5), and the inner wall of the patterned fixing ring (5) is formed with a number of patterned protrusions. The two ends of the main frame (1) are respectively detachably connected to side templates (4); The main frame (1) has a fastening component (2) on its arc surface. The fastening component (2) includes two symmetrically arranged limiting grooves (21). An insertion plate (22) is slidably fitted in the limiting groove (21). The patterned fixing ring (5) has a fixing hole (23) at the position corresponding to the insertion plate (22). The insertion plate (22) is inserted into the fixing hole (23). The insertion plate (22) is fixedly connected to a connecting fixing plate (24) at one end near the bottom of the limiting groove (21). A reset spring (25) is provided between the connecting fixing plate (24) and the bottom of the limiting groove (21). The two ends of the reset spring (25) are fixedly connected to the connecting fixing plate (24) and the support pad (26) respectively. The support pad (26) is fixed to the inner wall of the limiting groove (21).

2. The tire mold with easily detachable tread pattern modules according to claim 1, characterized in that: The connecting fixing plate (24) is exposed on one side of the main frame (1) and is fixed with an operating handle (27). The operating handle (27) is circular and protrudes from the surface of the main frame. The end of the insertion plate (22) away from the connecting fixing plate (24) is formed with a guide tip (28). The axis of the guide tip (28) is consistent with the sliding direction of the insertion plate (22).

3. The tire mold with easily detachable tread pattern modules according to claim 1, characterized in that: The arc surface of the patterned fixing ring (5) is fixed with symmetrically distributed sliding guide plates (29), and the inner wall of the main frame (1) is provided with a corresponding sliding track (210). The sliding guide plate (29) and the sliding track (210) form a T-groove sliding fit structure.

4. The tire mold with easily detachable tread pattern modules according to claim 1, characterized in that: The main frame (1) has four positioning posts (31) fixed at both ends respectively, and the side template (4) has positioning slots (32) corresponding to the positioning posts (31). The positioning posts (31) and positioning slots (32) are inserted and matched. A rectangular mounting plate (33) is fixed on the side of the side template (4) facing the positioning slot (32). An elastic snap spring (34) is provided between the rectangular mounting plate (33) and the snap plate (35). The elastic restoring force of the elastic snap spring (34) drives the snap plate (35) to be embedded in the snap groove (36) of the positioning post (31). The snap plate (35) has a trapezoidal cross section and forms a wedge-tight fit with the snap groove (36).

5. The tire mold with easily detachable tread pattern modules according to claim 4, characterized in that: The rectangular mounting plate (33) is provided with a limiting guide rod (37) through it. One end of the limiting guide rod (37) is fixedly connected to the buckle plate (35), and the other end extends to the outside of the rectangular mounting plate (33) and is provided with a limiting boss.

6. The tire mold with easily detachable tread pattern modules according to claim 4, characterized in that: A lifting plate (38) is fixed on the upper surface of the buckle plate (35). The surface of the lifting plate (38) is provided with a grid-like anti-slip texture, and the depth of the anti-slip texture is 0.3-0.5mm.

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