High-efficiency letter grain leather stamping and shaping production method

Abstract

The invention discloses a high-efficiency letter grain leather stamping and shaping production method which comprises the following steps: S1, processing equipment preparation, S2, letter grain and metal iron sheet stamping separation, S3, letter grain and metal iron sheet splicing synthesis, S4, letter grain and metal gasket stamping separation, and S5, letter grain and leather stamping and shaping installation. According to the high-efficiency letter grain leather stamping and shaping production method, compared with an existing letter grain stamping process, during actual operation, the letter grains do not need to be manually placed one by one, unified stamping and separating work of the letter grains can be completed in the step S4, the multiple letter grains are subjected to unified stamping and separating to enter a letter tray, and the production efficiency is improved. Compared with the prior art, the device has the use effect of unified stamping and separation, and the letter grains do not need to be manually put one by one, so that the shaping processing efficiency between the letter grains and the leather can be greatly improved, the operation steps are simple, the use is convenient, and the mounting efficiency of the letter grains and the leather is higher.

Description

Technical Field

[0001] The invention discloses a high-efficiency letter-grain leather stamping and shaping production method, belonging to the technical field of leather bag production. Background Art

[0002] Leather is a denatured, non-perishable animal skin obtained through physical and chemical processes such as depilation and tanning. Leather is made of natural protein fibers tightly woven in three dimensions. Its surface has a special grain layer with natural grain and luster, and feels comfortable. The leather industry covers the main industries such as leather making, shoe making, leather clothing, leather goods, fur and its products, as well as supporting industries such as leather chemicals, leather hardware, leather machinery, and auxiliary materials. It has a high degree of correlation between upstream and downstream, relies on market pull, has evergreen products, and integrates the characteristics of earning foreign exchange, enriching the people, and providing employment. In the existing leather bag manufacturing process, it is generally necessary to stamp metal letter particles on the leather, and the letter particles are impact-processed to form letter logos on the leather bags. The existing letter particle impact work is generally to place the letter particles one by one manually into the lower mold, and then place the leather bags between the upper mold and the lower mold. After the upper mold is pressed down and impacted, the column of the letter particles will be deformed and stuck on the leather bags, thereby completing the impact installation of the letter particles. This processing method greatly reduces the overall stamping efficiency of the letter particles, has low production efficiency, and the cumbersome operation will greatly affect the stamping production speed between the letter particles and the leather. Summary of the invention

[0003] The purpose of the present invention is to solve the above-mentioned shortcomings and provide a high-efficiency letter grain leather stamping and shaping production method.

[0004] A high-efficiency letter grain leather stamping and shaping production method, the method comprising the following steps: S1, processing equipment preparation; a. Prepare stamping parts and dies for separating and synthesizing letter particles and metal iron sheets; b. Then prepare the stamping parts, separation mold and letter tray for impact separation of letter particles and supporting iron sheets; c. Finally, prepare the stamping parts and shaping dies for stamping the letter grains and leather; S2, the letter particles are separated from the metal sheet by punching; a. Install the upper die base of the mold prepared in step S1, a on the stamping part, and install the lower die base directly below the lower die base; b. The staff manually places the square iron sheet frame carrying the metal letter particles on the lower die cavity of the mold in step S1, a. After the placement is completed, the stamping part in step S1, a can drive the upper die seat to descend; c. Step S1, the letter stamping parts on the lower surface of the lower die seat of the mold in step a can act on the letter grains on the square iron sheet frame, so that the letter grains on the iron sheet frame are separated from the iron sheet frame by the downward stamping action. At this time, the separated letter grains can stay in the letter grooves of the lower die seat of the mold assembly in step S1, a, thereby completing the stamping separation work of the letter grains and the iron sheet frame; S3, letter particles and metal iron sheets are plugged together; a. After steps S2 and S3 are completed, the stamping part drives the upper die seat to reset. At this time, the staff puts the metal gasket with a slot into the metal pin of the letter grain. The stamping part drives the upper die seat assembly to descend again, so that the letter stamping part of the upper die seat drives the metal gasket with a slot to press down a distance, so that the metal pin of the letter grain is inserted into the slot of the metal gasket. At this time, the stamping and plugging synthesis of the letter grain and the metal gasket can be completed, and the letter grain is re-stamped and inserted into the metal gasket. After that, the staff removes the synthesized letter grain and metal gasket; S4, the letter particles are separated from the metal gasket by punching; a. Fix the separation die prepared in step S1, b below the stamping part; b. Place a metal support gasket of suitable dimensions into the upper die base, and place the letter tray in step S1, b into the tray slot of the lower die base; c. At this time, through step S1, the stamping part in b can press down the upper die seat through its lower pressing head, so that the upper die seat is driven to press down by the lower pressing head of the stamping part; d. During the continuous downward pressing process, the pressure head of the stamping part causes the letter particles to be separated from the metal support gasket due to the pressure, thereby performing stamping and separation work on the letter particles on the metal support gasket; e. The separated letter particles can fall from the punching groove onto the letter tray, thereby completing the unified separation of the letter particles; f. The staff removes the letter tray; S5, stamping and shaping of letter grains and leather; a. Place the letter tray with letter particles obtained in step S4, f, into the shaping mold prepared in step S1, c; b. In step S5, the leather to be shaped is placed on the letter grains in step a; c. Place a leather gasket for positioning in the upper die seat of the shaping die; d. The staff manually drives the stamping parts in step S1, c to work. When the stamping parts are working, the upper mold of the shaping mold presses downward. At this time, the metal pins on the metal letter particles can penetrate the leather and be inserted into the clamping holes of the leather gasket. During the continuous downward impact process, the metal pins of the letter particles are deformed by force, so that a number of metal letter particles are fixed on the stamped leather through the deformed metal pins, thereby completing the stamping and installation of the metal letter particles and the leather products; Preferably, the stamping part in step S1,a is a cylinder-driven stamping part structure.

[0005] Preferably, the stamping part in step S1,b is a stamping part structure having a stamping head.

[0006] Preferably, the letter tray in step S1,c is a handheld tray structure, a handheld handle is provided on the outer wall of the letter tray, and letter limiting grooves adapted to the letter particles are provided on the letter tray.

[0007] Preferably, in step S2, the punching force of the c punching part when performing separation punching on the square iron sheet frame is 5-20% of the theoretical punching force.

[0008] Preferably, the calculation formula for the theoretical punching pressure is: P=KLtτ, wherein P is the theoretical punching pressure, in N; L is the peripheral length of the square iron sheet frame separation, in mm; t is the thickness of the square iron sheet frame, in mm; τ is the tensile strength of the material, in MPa; K is the coefficient, and the value is 1.3.

[0009] Preferably, in step S4,c, the speed range of the low-speed downward movement of the punch head of the stamping part is 5mm / s to 10mm / s, and the speed range of the low-speed upward movement of the punch head of the stamping part is 10mm / s to 15mm / s.

[0010] Compared with the prior art, the present invention has the following beneficial effects: The method is a high-efficiency production method for stamping and shaping letter grain leather. Compared with the existing letter grain stamping process, in actual operation, there is no need to manually place the letter grains one by one. In step S4, the unified stamping and separation of the letter grains can be completed, so that a plurality of letter grains are uniformly stamped and separated and enter the letter tray, which has the use effect of unified stamping and separation, and there is no need to manually place the letter grains one by one, thereby greatly improving the shaping processing efficiency between the letter grains and the leather; At the same time, the letter grain leather stamping and shaping production method of the present invention only needs to complete steps S4 and S5 when the customer is shaping and installing the letter grains and leather. That is, when the orderer is shaping the letter grains and leather, he only needs to uniformly stamp and separate the letter grains from the metal gasket onto the letter tray, and then the stamping parts can be used to directly complete the stamping and shaping work between the leather and the letter grains. In this way, a number of letter grains can be uniformly positioned and installed on the leather in a single stamping process. The operation steps are simple and easy to use. The installation efficiency of the letter grains and leather is higher, the steps are simpler, and the traditional cumbersome steps are avoided. The processing and forming efficiency between the letter grains and the leather can be effectively improved by saving operation steps and time, and the use effect of high-efficiency positioning processing is achieved. DETAILED DESCRIPTION

[0011] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0012] A high-efficiency letter grain leather stamping and shaping production method, the method comprising the following steps: S1, processing equipment preparation; a. Prepare stamping parts and dies for separating and synthesizing letter particles and metal iron sheets; b. Then prepare the stamping parts, separation mold and letter tray for impact separation of letter particles and supporting iron sheets; c. Finally, prepare the stamping parts and shaping dies for stamping the letter grains and leather; S2, the letter particles are separated from the metal sheet by punching; a. Install the upper die base of the mold prepared in step S1, a on the stamping part, and install the lower die base directly below the lower die base; b. The staff manually places the square iron sheet frame carrying the metal letter particles on the lower die cavity of the mold in step S1, a. After the placement is completed, the stamping part in step S1, a can drive the upper die seat to descend; c. Step S1, the letter stamping parts on the lower surface of the lower die seat of the mold in step a can act on the letter grains on the square iron sheet frame, so that the letter grains on the iron sheet frame are separated from the iron sheet frame by the downward stamping action. At this time, the separated letter grains can stay in the letter grooves of the lower die seat of the mold assembly in step S1, a, thereby completing the stamping separation work of the letter grains and the iron sheet frame; S3, letter particles and metal iron sheets are plugged together; a. After steps S2 and S3 are completed, the stamping part drives the upper die seat to reset. At this time, the staff puts the metal gasket with a slot into the metal pin of the letter grain. The stamping part drives the upper die seat assembly to descend again, so that the letter stamping part of the upper die seat drives the metal gasket with a slot to press down a distance, so that the metal pin of the letter grain is inserted into the slot of the metal gasket. At this time, the stamping and plugging synthesis of the letter grain and the metal gasket can be completed, and the letter grain is re-stamped and inserted into the metal gasket. After that, the staff removes the synthesized letter grain and metal gasket; S4, the letter particles are separated from the metal gasket by punching; a. Fix the separation die prepared in step S1, b below the stamping part; b. Place a metal support gasket of suitable dimensions into the upper die base, and place the letter tray in step S1, b into the tray slot of the lower die base; c. At this time, through step S1, the stamping part in b can press down the upper die seat through its lower pressing head, so that the upper die seat is driven to press down by the lower pressing head of the stamping part; d. During the continuous downward pressing process, the pressure head of the stamping part causes the letter particles to be separated from the metal support gasket due to the pressure, thereby performing stamping and separation work on the letter particles on the metal support gasket; e. The separated letter particles can fall from the punching groove onto the letter tray, thereby completing the unified separation of the letter particles; f. The staff removes the letter tray; S5, stamping and shaping of letter grains and leather; a. Place the letter tray with letter particles obtained in step S4, f, into the shaping mold prepared in step S1, c; b. In step S5, the leather to be shaped is placed on the letter grains in step a; c. Place a leather gasket for positioning in the upper die seat of the shaping die; The staff manually drives the stamping parts in step S1, c to work. When the stamping parts are working, the upper mold of the molding die punches downward. At this time, the metal pins on the metal letter particles can penetrate the leather and be inserted into the snap-in holes of the leather gasket. During the continuous downward impact process, the metal pins of the letter particles are deformed by the force, so that several metal letter particles are fixed on the stamped and shaped leather through the deformed metal pins, thereby completing the stamping and installation work of the metal letter particles and leather products.

[0013] In this embodiment, the stamping part in step S1, a is a cylinder-driven stamping part structure.

[0014] In this embodiment, the stamping part in step S1,b is a stamping part structure having a stamping head.

[0015] In this embodiment, the letter tray in step S1,c is a handheld tray structure, a handheld handle is provided on the outer wall of the letter tray, and letter limiting grooves adapted to the letter particles are provided on the letter tray.

[0016] In this embodiment, in step S2, the punching force of the c punching part when performing separation punching on the square iron sheet frame is 5-20% of the theoretical punching force.

[0017] In this embodiment, the calculation formula for the theoretical punching pressure is: P=KLtτ, wherein P is the theoretical punching pressure, in N; L is the peripheral length of the square iron sheet frame, in mm; t is the thickness of the square iron sheet frame, in mm; τ is the tensile strength of the material, in MPa; K is the coefficient, and its value is 1.3.

[0018] In this embodiment, in step S4,c, the speed range of the low-speed downward movement of the punch head of the stamping part is 5mm / s to 10mm / s, and the speed range of the low-speed upward movement of the punch head of the stamping part is 10mm / s to 15mm / s.

[0019] The method is a high-efficiency production method for stamping and shaping letter grain leather. Compared with the existing letter grain stamping process, in actual operation, there is no need to manually place the letter grains one by one. In step S4, the unified stamping and separation of the letter grains can be completed, so that a plurality of letter grains are uniformly stamped and separated and enter the letter tray, which has the use effect of unified stamping and separation, and there is no need to manually place the letter grains one by one, thereby greatly improving the shaping processing efficiency between the letter grains and the leather; At the same time, the letter grain leather stamping and shaping production method of the present invention only needs to complete steps S4 and S5 when the customer is shaping and installing the letter grains and leather. That is, when the orderer is shaping the letter grains and leather, he only needs to uniformly stamp and separate the letter grains from the metal gasket onto the letter tray, and then the stamping parts can be used to directly complete the stamping and shaping work between the leather and the letter grains. In this way, a number of letter grains can be uniformly positioned and installed on the leather in a single stamping process. The operation steps are simple and easy to use. The installation efficiency of the letter grains and leather is higher, the steps are simpler, and the traditional cumbersome steps are avoided. The processing and forming efficiency between the letter grains and the leather can be effectively improved by saving operation steps and time, and the use effect of high-efficiency positioning processing is achieved.

[0020] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency letter grain leather stamping and shaping production method, characterized in that: The method comprises the following steps: S1, processing equipment preparation; a. Prepare stamping parts and dies for separating and synthesizing letter particles and metal iron sheets; b. Then prepare the stamping parts, separation dies and letter trays for impact separation of the letter particles and the supporting iron sheets; c. Finally, prepare the stamping parts and shaping dies for stamping the letter grains and leather; S2, the letter particles are separated from the metal sheet by punching; a. Install the upper die base of the mold prepared in step S1, a on the stamping part, and install the lower die base directly below the lower die base; b. The staff manually places the square iron sheet frame carrying the metal letter particles on the lower die cavity of the mold in step S1, a. After the placement is completed, the stamping part in step S1, a can drive the upper die seat to descend; c. Step S1, the letter stamping parts on the lower surface of the lower die seat of the mold in step a can act on the letter grains on the square iron sheet frame, so that the letter grains on the iron sheet frame are separated from the iron sheet frame by the downward stamping action. At this time, the separated letter grains can stay in the letter grooves of the lower die seat of the mold assembly in step S1, a, thereby completing the stamping separation work of the letter grains and the iron sheet frame; S3, letter particles and metal iron sheets are plugged together; a. After steps S2 and S3 are completed, the stamping part drives the upper die seat to reset. At this time, the staff puts the metal gasket with a slot into the metal pin of the letter grain. The stamping part drives the upper die seat assembly to descend again, so that the letter stamping part of the upper die seat drives the metal gasket with a slot to press down a distance, so that the metal pin of the letter grain is inserted into the slot of the metal gasket. At this time, the stamping and plugging synthesis of the letter grain and the metal gasket can be completed, and the letter grain is re-stamped and inserted into the metal gasket. After that, the staff removes the synthesized letter grain and metal gasket; S4, the letter particles are separated from the metal gasket by punching; a. Fix the separation die prepared in step S1, b below the stamping part; b. Place a metal support gasket of suitable dimensions into the upper die base, and place the letter tray in step S1, b into the tray slot of the lower die base; c. At this time, through step S1, the stamping part in b can press down the upper die seat through its lower pressing head, so that the upper die seat is driven to press down by the lower pressing head of the stamping part; d. During the continuous downward pressing process, the pressure head of the stamping part causes the letter particles to be separated from the metal support gasket due to the pressure, thereby performing stamping and separation work on the letter particles on the metal support gasket; e. The separated letter particles can fall from the punching groove onto the letter tray, thereby completing the unified separation of the letter particles; f. The staff removes the letter tray; S5, stamping and shaping of letter grains and leather; a. Place the letter tray with letter particles obtained in step S4, f, into the shaping mold prepared in step S1, c; b. In step S5, the leather to be shaped is placed on the letter grains in step a; c. Place a leather gasket for positioning in the upper die seat of the shaping die; d. The staff manually drives the stamping parts in step S1, c to work. When the stamping parts are working, the upper mold of the molding die presses downward. At this time, the metal pins on the metal letter particles can penetrate the leather and be inserted into the snap-in holes of the leather gasket. During the continuous downward impact process, the metal pins of the letter particles are deformed by the force, so that several metal letter particles are fixed on the stamped and shaped leather through the deformed metal pins, thereby completing the stamping and installation of the metal letter particles and leather products.

2. A high-efficiency letter grain leather stamping and shaping production method according to claim 1, characterized in that: In step S1, the stamping part described in a is a cylinder-driven stamping part structure.

3. The high-efficiency letter grain leather stamping and shaping production method according to claim 1 is characterized in that: In step S1, b, the stamping part is a stamping part structure having a stamping head.

4. The high-efficiency letter grain leather stamping and shaping production method according to claim 1, characterized in that: In step S1, c, the letter tray is a handheld tray structure, a handheld handle is provided on the outer wall of the letter tray, and letter limiting grooves adapted to the letter particles are provided on the letter tray.

5. The high-efficiency letter grain leather stamping and shaping production method according to claim 1 is characterized in that: In the step S2, the punching force of the c punching part when performing separation punching on the square iron sheet frame is 5-20% of the theoretical punching force.

6. A high-efficiency letter grain leather stamping and shaping production method according to claim 5, characterized in that: The calculation formula of the theoretical punching pressure is: P=KLtτ, wherein P is the theoretical punching pressure, in N; L is the peripheral length of the square iron sheet frame separation, in mm; t is the thickness of the square iron sheet frame, in mm; τ is the tensile strength of the material, in MPa; K is the coefficient, and the value is 1.

3.

7. The high-efficiency letter grain leather stamping and shaping production method according to claim 1 is characterized by: In the step S4, c, the speed range of the low-speed downward movement of the punch head of the punching part is 5 mm / s to 10 mm / s, and the speed range of the low-speed upward movement of the punch head of the punching part is 10 mm / s to 15 mm / s.