Die date stamp

Abstract

The utility model discloses a die date stamp which comprises a main body which is of a through hole structure and comprises an upper connecting body and a lower connecting body which are detachably connected. The core is rotationally connected into the main body; the nut is in threaded connection with the lower end part of the core; the core is sleeved with the spring, and the two ends of the spring abut against the portion between the top face of the nut and a protruding part formed in the main body; wherein a supporting step and a rotation stopping body with a rotation stopping groove are arranged in the lower connecting body, the nut is clamped in the rotation stopping groove in a matched mode, and the bottom of the nut is in constant contact with the supporting step through the pre-tightening force of the spring. Compared with the prior art, the core is rapidly replaced through the split structure, adjustment is convenient, assembly and disassembly are convenient, and the replacement time is saved; the core achieves the anti-falling design through the nut, and meanwhile, the core is prevented from jumping up and down; the pre-tightening force of the spring enables the nut and the supporting step to keep constant contact pressure, axial limiting of the nut is formed, the polygonal nut and the rotation stopping groove form shape fit, and circumferential limiting of the nut is formed.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, specifically to a mold date stamp. Background Technology

[0002] When producing products using injection molds, blow molds, and other molds, it is sometimes necessary to imprint dates on the product surface to trace production dates, determine repair and scrap dates, etc. Because products are formed inside the mold, the date engraving portion of the date stamp needs to face the inner cavity of the mold, and the date stamp needs to be installed inside the mold. Date stamps typically consist of a fixed part with month numbers and a rotating part with year numbers and a pointer. The rotating part can rotate relative to the fixed part to indicate different dates. However, if the date stamp rotates for an extended period, it may slip, causing instability in the locked date. This leads to uncontrollable imprinting quality in mass production, affecting production efficiency.

[0003] In summary, there is an urgent need to develop a mold date stamp that can quickly change and accurately locate year and month information. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a mold date stamp that enables rapid replacement and precise positioning of year and month information.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A mold date stamp, comprising:

[0007] The main body has a through-hole structure and includes a detachable upper connector and a lower connector;

[0008] The core is rotatably connected to the inside of the main body;

[0009] The nut is threaded onto the lower end of the core.

[0010] A spring is fitted around the outside of the core, with its two ends abutting against the protrusion formed between the top surface of the nut and the inside of the main body.

[0011] The lower connecting body has a supporting step and an anti-rotation body with an anti-rotation groove inside. The nut is adapted to be snapped into the anti-rotation groove, and the bottom of the nut is kept in constant contact with the supporting step by the spring preload.

[0012] Furthermore, the protrusion is an annular hanging platform located on the inner side of the upper connector body, and the annular hanging platform is located in the upper middle part of the inner wall of the upper connector body.

[0013] Furthermore, the core has a T-shaped structure, with its upper radially extending flange hooked onto an annular mounting platform, and its lower rod body having an external thread section.

[0014] Furthermore, the support step is located axially below the anti-rotation body, and the two form a stepped structure to limit the nut's position. The bearing surface of the support step is in surface contact with the bottom surface of the nut.

[0015] Furthermore, the anti-rotation groove of the anti-rotation body is adapted to the outer periphery of the nut, and the nut is a polygonal prism structure, whose side wall and the inner wall of the anti-rotation groove form an anti-rotation fit.

[0016] Furthermore, the top surface of the upper connector is provided with a month engraving containing month numbers distributed in a ring.

[0017] Furthermore, the top surface of the core is provided with year engraving and arrow engraving.

[0018] Furthermore, the bottom end face of the lower connecting body is provided with an internal threaded hole, and a headless screw is connected in the internal threaded hole to fix the main body inside the mold.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. The upper and lower connectors are connected by threads or snaps. After separation, the internal core can be exposed for replacement. The split structure enables quick core replacement, easy adjustment, convenient assembly and disassembly, and saves replacement time.

[0021] 2. The flange of the core is attached to the annular mounting platform, and the threaded section of the lower rod body forms an adjustable connection with the nut. The nut enables the core to achieve an anti-drop design and prevents the core from jumping up and down.

[0022] 3. The spring preload keeps the nut and the support step in constant contact pressure, thus limiting the nut axially. The polygonal nut and the anti-rotation groove form a shape fit, thus limiting the nut circumferentially. Attached Figure Description

[0023] Figure 1 The image shown is a 3D structural diagram of the date stamp.

[0024] Figure 2 The diagram shown is a cross-sectional view of the date stamp.

[0025] Figure 3 The diagram shown is an exploded cross-sectional view of the assembly structure of the date stamp.

[0026] Figure 4 The diagram shown is a top-down view of the date chapter.

[0027] Figure 5 The diagram shown is an assembly structure diagram of the date stamp and mold;

[0028] Figure 6The diagram shows the disassembled assembly structure of the date stamp and mold.

[0029] In the diagram: 1. Main body; 2. Core; 3. Nut; 4. Spring; 5. Headless screw; 6. Mold; 11. Upper connector; 12. Lower connector; 111. Annular hanging platform; 121. Support step; 122. Anti-rotation body; 123. Internal threaded hole. Detailed Implementation

[0030] 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.

[0031] See Figure 1-6 As shown, this utility model provides a technical solution: a mold date stamp, comprising: a main body 1, which has a through-hole structure and includes a detachably connected upper connecting body 11 and a lower connecting body 12; a core 2, rotatably connected inside the main body 1; a nut 3, threadedly connected to the lower end of the core 2; and a spring 4, sleeved on the outside of the core 2, with both ends of the spring 4 abutting between the top surface of the nut 3 and a protrusion formed inside the main body 1; wherein, the lower connecting body 12 has a supporting step 121 and an anti-rotation body 122 with an anti-rotation groove inside, the nut 3 is adapted to be snapped into the anti-rotation groove, and the bottom of the nut 3 is kept in constant contact with the supporting step 121 by the pre-tightening force of the spring 4. The upper connecting body 11 and the lower connecting body 12 are connected by threads or snaps, and the core 2 can be exposed for replacement after separation. The split structure enables quick core replacement, convenient adjustment, easy assembly and disassembly, and saves replacement time.

[0032] See Figure 2-3 As shown, the protrusion is an annular mounting platform 111 located on the inner side of the upper connecting body 11, situated in the upper-middle part of the inner wall of the upper connecting body 11. The core 2 has a T-shaped structure, with its upper radially extending flange hooking onto the annular mounting platform 111, and its lower rod having an external thread section. Through the hooking design between the flange of the T-shaped core 2 and the annular mounting platform 111, the core can be quickly assembled and disassembled without tools. The annular mounting platform 111, located in the upper-middle part of the inner wall of the upper connecting body 11, limits the axial installation position of the core 2. Combined with the preload of the spring 4, the axial movement of the core 2 is ≤0.02mm, ensuring the vertical alignment accuracy of the engraved numbers. The nut 3 provides an anti-fall-off design for the core 2, preventing it from jumping up and down.

[0033] See Figure 2-3As shown, the support step 121 is located axially below the anti-rotation body 122. The two form a stepped structure to limit and support the nut 3. The bearing surface of the support step 121 and the bottom surface of the nut 3 form a surface contact. The anti-rotation groove of the anti-rotation body 122 is adapted to the outer periphery of the nut 3. The nut 3 is a polygonal prism structure, preferably hexagonal or octagonal, and its sidewalls form an anti-rotation fit with the inner wall of the anti-rotation groove. The preload of the spring 4 keeps the nut 3 and the support step 121 in constant contact pressure, thus limiting the nut 3 axially. The polygonal nut 3 and the anti-rotation groove form a shape fit, thus limiting the nut 3 circumferentially.

[0034] See Figure 4 As shown, the top surface of the upper connecting body 11 is provided with a month engraving containing month numbers distributed in a ring; the top surface of the core 2 is provided with a year engraving and an arrow engraving. In this embodiment, the number 25 on the top surface of the core 2 is the year engraving, which represents 2025; the position pointed to by the arrow on the top surface of the core 2 represents the current production month.

[0035] See Figure 3 , Figure 5-6 As shown, the bottom end face of the lower connecting body 12 is provided with an internal threaded hole 123, and a headless screw 5 is connected in the internal threaded hole 123. The main body 1 is fixed to the inside of the mold by the headless screw 5. By precisely matching the headless screw 5 with the threaded hole of the mold 6, the perpendicularity error between the main body 1 and the mold 6 is ≤0.01mm, ensuring the accurate imprinting position of the date stamp. Compared with the traditional welding or overall embedding method, the flatness control accuracy is improved, and the date stamp can be replaced without disassembling the mold body.

[0036] Mold date stamp assembly process: Insert the core 2 into the upper connecting body 11 and hang it on the annular mounting platform 111 of the upper connecting body 11 through the flange. Slide the spring 4 into the core 2 rod body and screw the nut 3 into the external thread section of the core 2. Connect the lower connecting body 12 and the upper connecting body 11 together by means of threads or snaps. Snap the nut 3 into the anti-rotation groove of the anti-rotation body to complete the entire date stamp assembly. Then fix the date stamp body inside the mold 6 with the headless screw 5.

Claims

1. A mold date stamp, characterized in that, include: The main body (1) has a through hole structure and includes an upper connector (11) and a lower connector (12) that can be detachably connected. Core (2) is rotatably connected to the inside of the main body (1); Nut (3) is threaded to the lower end of core (2); Spring (4) is sleeved on the outside of core (2), and the two ends of spring (4) abut against the protrusion formed between the top surface of nut (3) and the inside of body (1); The lower connecting body (12) is provided with a support step (121) and an anti-rotation body (122) with an anti-rotation groove. The nut (3) is adapted to be snapped into the anti-rotation groove, and the bottom of the nut (3) is pre-tightened by the spring (4) to keep it in constant contact with the support step (121).

2. The mold date stamp according to claim 1, characterized in that, The protrusion is an annular hanging platform (111) located on the inner side of the upper connecting body (11), and the annular hanging platform (111) is located in the upper middle part of the inner wall of the upper connecting body (11).

3. The mold date stamp according to claim 2, characterized in that, The core (2) has a T-shaped structure, with its upper radially extending flange hooked onto an annular mounting platform (111), and its lower rod body having an external thread section.

4. The mold date stamp according to claim 1, characterized in that, The support step (121) is located axially below the anti-rotation body (122). The two form a stepped structure to limit the support of the nut (3). The bearing surface of the support step (121) is in surface contact with the bottom surface of the nut (3).

5. The mold date stamp according to claim 4, characterized in that, The anti-rotation groove of the anti-rotation body (122) is adapted to the outer periphery of the nut (3). The nut (3) is a polygonal column structure, and its side wall and the inner wall of the anti-rotation groove form an anti-rotation fit.

6. The mold date stamp according to claim 1, characterized in that, The top surface of the upper connector (11) is provided with a month engraving containing month numbers distributed in a ring.

7. The mold date stamp according to claim 1, characterized in that, The top surface of the core (2) is provided with year engraving and arrow engraving.

8. The mold date stamp according to claim 1, characterized in that, The bottom end face of the lower connector (12) is provided with an internal threaded hole (123), and a headless screw (5) is connected in the internal threaded hole (123). The main body (1) is fixed inside the mold by the headless screw (5).

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