Logo injection mold in-mold sprue cutting device

Abstract

This invention discloses an in-mold gate cutting device for logo injection molds, relating to the field of injection molding, and solves the problem of deformation and whitening at the shearing opening of symmetrical logo injection molds. The in-mold gate cutting device for logo injection molds includes a support frame, with a force-applying component mounted at the top of the support frame. This force-applying component cuts the logo injection mold. A positioning component is mounted on one side of the force-applying component, and the positioning component is aligned with a positioning template. The force-applying component includes a drive motor, a first clamping plate, and a second clamping plate. The drive motor drives the first and second clamping plates to move relative to each other in the horizontal direction through a transmission structure. The positioning component includes a first positioning template, a second positioning template, and a logo body. The first and second positioning templates are aligned to cut the logo body. In this invention, the force-applying component and the positioning component work together to apply force from both sides of the logo body, preventing the product from deflecting or shifting at the moment of cutting. After cutting, the product automatically falls from the opening.

Description

Technical Field

[0001] This invention relates to the field of injection molding, specifically to a gate cutting device for an in-mold of a logo injection mold. Background Technology

[0002] In injection molding, the treatment of the gate is a critical factor affecting product quality for logo parts with high aesthetic requirements. Traditional methods mainly include manual shearing and mold-opening pull-out. Manual shearing is not only inefficient, but also prone to errors due to the difficulty in maintaining consistent operator technique, force, and position. This can easily lead to shearing deviations, uneven cuts, and even defects such as burrs and whitening, resulting in product scrap. Furthermore, manually using sharp tools for trimming poses a risk of workplace injury. While mold-opening pull-out is automated, it relies on the relative movement of the mold opening to forcibly break the gate. This method generates significant internal stress in the logo product, causing deformation, and the cut is often uneven, affecting the product's aesthetics and symmetry, failing to meet the quality requirements of high-end products.

[0003] Prior art document 1: Chinese patent CN215434822U discloses an injection molding gate cutting device, relating to the field of injection molding technology. It solves the technical problems of high labor intensity and low efficiency associated with manual shearing to separate the gate from the air guide plate in existing technologies. The device includes a base, a positioning component, and a cutting component. The positioning component includes a fixed support limiting part, a gate limiting part, and a movable limiting part disposed on the base. The fixed support limiting part has a support surface for placing the air guide plate assembly. When the air guide plate assembly is placed on the support surface, the gate of the air guide plate assembly is located within the gate limiting part. The movable limiting part can move above the air guide plate assembly to cooperate with the fixed support limiting part to limit the position of the air guide plate assembly. The cutting component is disposed on the base and can reciprocate along the length direction of the air guide plate assembly to cut the gate. This invention is used to achieve automatic separation of the gate and the air guide plate, reducing labor intensity and improving production efficiency.

[0004] However, this injection gate cutting device still has the following drawbacks:

[0005] 1. The positioning of the product and gate is inaccurate, and it cannot be determined whether the product has been cut after cutting.

[0006] 2. Unilateral cutting is insufficient to meet the quality requirements of highly symmetrical products: The cutting component of this device moves back and forth along the length of the air guide plate, which is essentially a unilateral or single-point cutting. For ordinary air guide plates, this cutting method can meet basic separation requirements; however, for injection-molded logo parts that require high symmetry and flat cross-sections, applying force on one side can easily cause the product to deflect or shift at the moment of cutting, resulting in tilted, uneven cuts, and even burrs and whitening. Summary of the Invention

[0007] The purpose of this invention is to provide an in-mold gate cutting device for LOGO injection molds to solve the problems mentioned in the background art.

[0008] The technical solution of the present invention is: a LOGO injection mold in-mold gate cutting device, including a device support frame, a force application component installed at the top of the device support frame, and the force application component cuts the LOGO injection mold, and a positioning component installed on one side of the force application component, and the positioning component is aligned with the positioning template;

[0009] The force-applying component includes a drive motor, a first clamping plate, and a second clamping plate, and the drive motor drives the first clamping plate and the second clamping plate to move relative to each other in the horizontal direction through a transmission structure;

[0010] The positioning component includes a first positioning template, a second positioning template, and a logo body, wherein the first positioning template and the second positioning template are aligned to cut off the logo body.

[0011] Furthermore, the output end of the drive motor is connected to a transmission component, and the central shaft of the transmission component is connected to the output end of the transmission component.

[0012] The transmission component is T-shaped;

[0013] The transmission component has arc-shaped limiting grooves on both sides.

[0014] Furthermore, a first L-connector is installed on one side of the bottom end of the transmission component, and the first L-connector is fixedly connected to the first clamping plate; a second L-connector is installed on the other side of the bottom end of the transmission component, and the second L-connector is fixedly connected to the second clamping plate.

[0015] Furthermore, both the first L-connector and the second L-connector are L-shaped and symmetrically distributed;

[0016] The top ends of the first L connector and the second L connector are provided with protruding rods, and the two sets of rods slide in the arc-shaped limiting grooves on both sides of the transmission component.

[0017] Furthermore, parallel limiting rods are connected through both sides of the first L-connector and the second L-connector, and there are two sets of parallel limiting rods. The two ends of the parallel limiting rods are fixedly connected to the equipment support frame.

[0018] Furthermore, the first clamping plate and the first positioning template are fixedly connected, and the second clamping plate and the second positioning template are fixedly connected;

[0019] The second positioning template has a limiting groove embedded on the side near the first positioning template, and the limiting groove is a through-hole shape. The two ends of the limiting groove are provided with LOGO support members, and there are two sets of LOGO support members. The side of the LOGO support member near the LOGO body is provided with an injection gate, and the LOGO support member is connected to the two ends of the LOGO body through the injection gate.

[0020] Furthermore, the first positioning template has second positioning rods installed at both ends on the side near the second positioning template, and the second positioning template has second positioning grooves installed at both ends on the side near the first positioning template, with the second positioning rods inserted through the second positioning grooves.

[0021] Furthermore, the first positioning template is equipped with first positioning rods on both sides of the side closest to the second positioning template, and the end of the first positioning rod away from the first positioning template is provided with a circular block with a larger diameter. One end of the first positioning rod passes through the covering plate, and the first positioning rod is provided with two sets of holes passing through both sides of the covering plate. The circular block at one end of the first positioning rod is larger than the through holes on both sides of the covering plate.

[0022] Furthermore, the second positioning template has first positioning grooves embedded on both sides of the side closest to the first positioning template, and the first positioning rod and the first positioning groove are engaged and connected.

[0023] Furthermore, the first positioning template has cutting blades on both sides of the middle part, and the cutting blades are aligned with the injection gate. The side of the cutting blades near the injection gate is sharp.

[0024] The cover plate has square through slots on both sides, and the cutting blades are provided in two sets and are closely attached to the two sides inside the square through slots.

[0025] This invention provides an improved in-mold gate cutting device for logo injection molds, which has the following improvements and advantages compared with the prior art:

[0026] Firstly, the precise separation of the logo body and the logo support is achieved through the cooperation of the force application component and the positioning component. By setting up a special cutting structure for the injection gate, the connection between the gate and the logo support is actively cut off after the mold is opened. After cutting, it automatically falls from the opening at the bottom of the limiting groove. Compared with manual gate cutting, the advantage of this structure is that the sharp point of the cutting blade and the weakest point of the injection gate are accurately positioned through the precise positioning rod, so that the cutting position is accurate and the connection between the logo and the gate support can be precisely cut off. Moreover, the motor shearing force is stable and high-speed, avoiding the stress and deformation caused by insufficient force or misalignment of the force application point leading to the breakage of the gate. It is especially suitable for injection-molded logo parts that require high precision, aesthetics and symmetry.

[0027] Secondly, the positioning is achieved through the second positioning rods at both ends and the first positioning rods on both sides, and the symmetrical cutting blades apply balanced shearing force synchronously, ensuring the controllability of the pressure plates on both sides and the consistency of the cross-section during the cutting process. The single-sided reciprocating cutting structure in the comparison document obviously cannot achieve such precise control of symmetry, and it is difficult to meet the stringent requirements of aesthetics and symmetry for high-end logo parts. This structure avoids the product from deflecting or shifting at the moment of cutting due to unilateral force application, resulting in tilted or uneven cuts, or even burrs and whitening. It reduces labor costs and the product scrap rate due to human error, and the benefits are significant in the long run. It also avoids workers using sharp knives for manual trimming, eliminating the risk of workplace injury. Attached Figure Description

[0028] The present invention will be further explained below with reference to the accompanying drawings and embodiments:

[0029] Figure 1 This is a schematic diagram of the first three-dimensional appearance structure of the present invention;

[0030] Figure 2 This is a schematic diagram of the second three-dimensional appearance structure of the present invention;

[0031] Figure 3 This is a schematic diagram of the third three-dimensional appearance structure of the present invention;

[0032] Figure 4 This is an exploded view of the force-applying component of the present invention;

[0033] Figure 5 This is a first exploded view of the positioning component of the present invention;

[0034] Figure 6 This is a second exploded view of the positioning component of the present invention;

[0035] Figure 7 For the present invention Figure 6 Enlarged structural diagram at point A in the middle;

[0036] Figure 8 This is a third exploded view of the positioning component of the present invention;

[0037] Figure 9 This is a fourth exploded view of the positioning component of the present invention.

[0038] Explanation of reference numerals in the attached drawings: 1. Equipment support frame; 2. Force application component; 201. Drive motor; 202. First clamping plate; 203. Second clamping plate; 204. Parallel limiting rod; 205. Transmission component; 206. First L-connector; 207. Second L-connector; 3. Positioning component; 301. First positioning template; 302. Second positioning template; 303. Covering pressure plate; 304. First positioning rod; 305. LOGO support component; 306. Second positioning rod; 307. Cutting blade; 308. First positioning groove; 309. Second positioning groove; 310. Injection gate; 311. LOGO body; 312. Limiting groove. Detailed Implementation

[0039] The following will be combined with the appendix Figures 1 to 9 This invention will be described in detail, and the technical solutions in the embodiments of this invention will be clearly and completely described. Obviously, the described embodiments are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0040] The present invention provides an improved in-mold gate cutting device for LOGO injection mold, including a device support frame 1, a force application component 2 installed at the top of the device support frame 1, the force application component 2 cutting the LOGO injection mold, and a positioning component 3 installed on one side of the force application component 2, the positioning component 3 being aligned with a positioning template.

[0041] The force application component 2 includes a drive motor 201, a first clamping plate 202 and a second clamping plate 203, and the drive motor 201 drives the first clamping plate 202 and the second clamping plate 203 to move relative to each other in the horizontal direction through a transmission structure.

[0042] The output end of the drive motor 201 is connected to the transmission component 205, and the central shaft of the transmission component 205 is connected to the output end of the transmission component 205.

[0043] Transmission component 205 is T-shaped;

[0044] The transmission component 205 has arc-shaped limiting grooves on both sides;

[0045] A first L-connector 206 is installed on one side of the bottom end of the transmission component 205, and the first L-connector 206 is fixedly connected to the first clamping plate 202. A second L-connector 207 is installed on the other side of the bottom end of the transmission component 205, and the second L-connector 207 is fixedly connected to the second clamping plate 203.

[0046] Both the first L-shaped connector 206 and the second L-shaped connector 207 are L-shaped and symmetrically distributed.

[0047] The top of the first L connector 206 and the second L connector 207 are both provided with protruding rods, and the two sets of rods slide in the arc-shaped limiting grooves on both sides of the transmission component 205 respectively.

[0048] Parallel limiting rods 204 are connected through both sides of the first L-connector 206 and the second L-connector 207. There are two sets of parallel limiting rods 204. The two ends of the parallel limiting rods 204 are fixedly connected to the equipment support frame 1. The first clamping plate 202 and the second clamping plate 203 are driven to move horizontally along the direction of the parallel limiting rods 204 through the transmission motor 201, so as to facilitate the opening and closing of the first positioning template 301 and the second positioning template 302.

[0049] The positioning component 3 includes a first positioning template 301, a second positioning template 302, and a logo body 311. The first positioning template 301 and the second positioning template 302 are aligned and cut off the logo body 311.

[0050] The first clamping plate 202 and the first positioning template 301 are fixedly connected, and the second clamping plate 203 and the second positioning template 302 are fixedly connected.

[0051] The second positioning template 302 has a limiting groove 312 embedded on the side near the first positioning template 301. The limiting groove 312 is a through-hole shape. The two ends of the limiting groove 312 are provided with LOGO support members 305. There are two sets of LOGO support members 305. The side of the LOGO support member 305 near the LOGO body 311 is provided with an injection gate 310. The LOGO support member 305 is connected to the two ends of the LOGO body 311 through the injection gate 310. In order to ensure the consistency of the LOGO, it is necessary to inject material from both sides of the LOGO body 311 at the same time. In order to achieve symmetry, two sets of LOGO support members 305 are required to support symmetrically.

[0052] The first positioning template 301 has two ends of second positioning rods 306 installed on the side of the first positioning template 301 near the second positioning template 302, and the second positioning template 302 has two ends of second positioning grooves 309 installed on the side of the second positioning template 302 near the first positioning template 301, and the second positioning rods 306 are inserted through the second positioning grooves 309.

[0053] First positioning rods 304 are installed on both sides of the first positioning template 301 near the second positioning template 302. The end of the first positioning rod 304 away from the first positioning template 301 is provided with a circular block with a larger diameter. One end of the first positioning rod 304 passes through the covering plate 303. The first positioning rod 304 is provided with two sets of holes passing through both sides of the covering plate 303. The circular block at one end of the first positioning rod 304 is larger than the through holes on both sides of the covering plate 303. When used, they are aligned so that the covering plate 303 presses on the surface of the LOGO support 305 to prevent the LOGO support 305 from moving.

[0054] Positioning is achieved through the second positioning rods 306 at both ends and the first positioning rods 304 on both sides. A balanced shearing force is applied synchronously, ensuring controllability of the pressure plates on both sides and consistency of the cut surface during the cutting process. The single-sided reciprocating cutting structure in the comparison document clearly cannot achieve this precise control of symmetry, making it difficult to meet the stringent requirements of aesthetics and symmetry for high-end logo parts. This structure avoids the product deflection or displacement caused by unilateral force application, resulting in tilted, uneven cuts, or even burrs and whitening. It reduces labor costs and product scrap rates due to human error, offering significant long-term benefits. Furthermore, it eliminates the need for workers to manually trim with sharp tools, thus reducing the risk of workplace injuries.

[0055] The second positioning template 302 has first positioning grooves 308 embedded on both sides of the side closest to the first positioning template 301, and the first positioning rod 304 is engaged with the first positioning grooves 308.

[0056] The first positioning template 301 has cutting blades 307 on both sides of the middle part, and the cutting blades 307 are aligned with the injection gate 310. The side of the cutting blades 307 near the injection gate 310 is sharp. The symmetrically distributed cutting blades 307 can cut the gates at both ends of the LOGO body 311 at the same time, and the applied force is the same, which improves the consistency of the cross section.

[0057] By setting up a special cutting structure for the injection gate 310, the connection between the gate and the LOGO support 305 is actively cut off after the mold is opened. Compared with manual gate cutting, the advantage of this structure is that the sharp part of the cutting blade 307 and the weakest point of the injection gate 310 are accurately positioned by the precise positioning rod, so that the cutting position is accurate and the connection between the LOGO and the gate support can be precisely cut off. Moreover, the motor shearing force is stable and high-speed, avoiding the stress and deformation caused by insufficient force and misalignment of the force application point, which would result in the breakage of the gate due to tensile deformation. It is especially suitable for injection-molded LOGO parts that require high precision, aesthetics and symmetry.

[0058] Square through slots are provided on both sides of the cover plate 303, and two sets of cutting blades 307 are provided, which are closely attached to the two sides inside the square through slots to facilitate alignment with the injection gate 310.

[0059] The force application component 2 and the positioning component 3 work together to achieve precise separation of the LOGO body 311 and the LOGO support component 305.

[0060] Working principle: First, the force application component 2 and the positioning component 3 work together to achieve precise separation of the LOGO body 311 and the LOGO support 305. By setting a special cutting structure for the injection gate 310, the connection between the gate and the LOGO support 305 is actively cut off after the mold is opened. Compared with manual gate cutting, the advantage of this structure is that the sharp part of the cutting blade 307 and the weakest point of the injection gate 310 are accurately positioned by the precise positioning rod, so that the cutting position is accurate and the connection between the LOGO and the gate support can be precisely cut off. Moreover, the motor shearing force is stable and high-speed, avoiding the stress and deformation caused by insufficient force and misalignment of the force application point, which would result in the breakage of the gate. It is especially suitable for injection-molded LOGO parts that require high precision, aesthetics and symmetry.

[0061] Then, positioning is achieved through the second positioning rods 306 at both ends and the first positioning rods 304 on both sides, and the symmetrical cutting blades 307 apply balanced shearing force synchronously to ensure the controllability of the pressure plates on both sides and the consistency of the cross-section during the cutting process. The single-sided reciprocating cutting structure in the comparison document obviously cannot achieve such precise control of symmetry, and it is difficult to meet the stringent requirements of aesthetics and symmetry for high-end logo parts. This structure avoids the product from deflecting or shifting at the moment of cutting due to unilateral force application, resulting in tilted or uneven cuts, or even burrs and whitening. It reduces labor costs and product scrap rate due to human error, and the long-term benefits are significant. It also avoids workers using sharp knives for manual trimming, eliminating the risk of workplace injury.

[0062] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A gate cutting device for an in-mold of a logo injection mold, comprising a support frame (1), characterized in that: The top of the equipment support frame (1) is equipped with a force application component (2), and the force application component (2) cuts the LOGO injection mold. A positioning component (3) is installed on one side of the force application component (2), and the positioning component (3) is aligned with the positioning template. The force application component (2) includes a drive motor (201), a first clamping plate (202), and a second clamping plate (203), and the drive motor (201) drives the first clamping plate (202) and the second clamping plate (203) to move relative to each other in the horizontal direction through the transmission structure; The positioning component (3) includes a first positioning template (301), a second positioning template (302), and a logo body (311). The first positioning template (301) and the second positioning template (302) are aligned and cut off the logo body (311).

2. The in-mold gate cutting device for a LOGO injection mold according to claim 1, characterized in that: The output end of the drive motor (201) is connected to a transmission component (205), and the central shaft of the transmission component (205) is connected to the output end of the transmission component (205). The transmission component (205) is T-shaped; The transmission component (205) has arc-shaped limiting grooves on both sides.

3. The in-mold gate cutting device for a logo injection mold according to claim 2, characterized in that: A first L-connector (206) is installed on one side of the bottom end of the transmission component (205), and the first L-connector (206) and the first clamping plate (202) are fixedly connected. A second L-connector (207) is installed on the other side of the bottom end of the transmission component (205), and the second L-connector (207) and the second clamping plate (203) are fixedly connected.

4. The in-mold gate cutting device for a LOGO injection mold according to claim 3, characterized in that: The first L-shaped connector (206) and the second L-shaped connector (207) are both L-shaped and symmetrically distributed. The top ends of the first L connector (206) and the second L connector (207) are provided with protruding rods, and the two sets of rods slide in the arc-shaped limiting grooves on both sides of the transmission component (205).

5. The in-mold gate cutting device for a logo injection mold according to claim 4, characterized in that: Parallel limiting rods (204) are connected through both sides of the first L connector (206) and the second L connector (207), and there are two sets of parallel limiting rods (204). The two ends of the parallel limiting rods (204) are fixedly connected to the equipment support frame (1).

6. The in-mold gate cutting device for a LOGO injection mold according to claim 1, characterized in that: The first clamping plate (202) and the first positioning template (301) are fixedly connected, and the second clamping plate (203) and the second positioning template (302) are fixedly connected; The second positioning template (302) is inlaid with a limiting groove (312) on the side near the first positioning template (301), and the limiting groove (312) is in a through-hole shape. The two ends of the limiting groove (312) are provided with LOGO support members (305), and there are two sets of LOGO support members (305). The side of the LOGO support member (305) near the LOGO body (311) is provided with an injection gate (310), and the LOGO support member (305) is connected to the two ends of the LOGO body (311) through the injection gate (310).

7. The in-mold gate cutting device for a LOGO injection mold according to claim 6, characterized in that: The first positioning template (301) has a second positioning rod (306) installed at both ends on the side of the second positioning template (302) near the second positioning template (302), and the second positioning groove (309) is installed at both ends on the side of the second positioning template (301) near the first positioning template (301), and the second positioning rod (306) is inserted through the second positioning groove (309).

8. The in-mold gate cutting device for a LOGO injection mold according to claim 7, characterized in that: The first positioning template (301) is equipped with first positioning rods (304) on both sides of the side close to the second positioning template (302). The first positioning rod (304) is provided with a large diameter circular block at the end away from the first positioning template (301). One end of the first positioning rod (304) passes through the covering plate (303). The first positioning rod (304) is provided with two sets of holes passing through both sides of the covering plate (303). The circular block at one end of the first positioning rod (304) is larger than the through holes on both sides of the covering plate (303).

9. The in-mold gate cutting device for a LOGO injection mold according to claim 8, characterized in that: The second positioning template (302) has first positioning grooves (308) embedded on both sides of the side close to the first positioning template (301), and the first positioning rod (304) and the first positioning groove (308) are engaged and connected.

10. A gate cutting device for an in-mold of a logo injection mold according to claim 9, characterized in that: The first positioning template (301) has cutting blades (307) on both sides of the middle part, and the cutting blades (307) are aligned with the injection gate (310). The side of the cutting blades (307) near the injection gate (310) is sharp. The cover plate (303) has square through slots on both sides, and the cutting blade (307) has two sets and is closely attached to both sides inside the square through slots.

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